/*
   * (C) Copyright 2008 - 2009
   * Windriver, <www.windriver.com>
   * Tom Rix <Tom.Rix@windriver.com>
   *
   * Copyright 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de>
   *
   * Copyright 2014 Linaro, Ltd.
   * Rob Herring <robh@kernel.org>
   *

   * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
   * Copyright 2017 NXP
   *

   * SPDX-License-Identifier:	GPL-2.0+
   */

  #include <config.h>

  #include <common.h>
  #include <errno.h>

  #include <stdlib.h>

  #include <fastboot.h>

  #include <malloc.h>
  #include <linux/usb/ch9.h>
  #include <linux/usb/gadget.h>
  #include <linux/usb/composite.h>
  #include <linux/compiler.h>
  #include <version.h>
  #include <g_dnl.h>

  #include "../lib/avb/fsl/utils.h"

  #ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
  #include <fb_mmc.h>
  #endif

  
  #ifdef CONFIG_IMX_TRUSTY_OS

  #define ATAP_UUID_SIZE 32
  #define ATAP_UUID_STR_SIZE ((ATAP_UUID_SIZE*2) + 1)

  extern int armv7_init_nonsec(void);
  extern void trusty_os_init(void);
  #include <trusty/libtipc.h>
  #endif

  #ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
  #include <fb_nand.h>
  #endif

  #ifdef CONFIG_FSL_FASTBOOT
  #include <asm/mach-imx/sys_proto.h>
  #include <fsl_fastboot.h>
  #include <mmc.h>
  #include <android_image.h>
  #include <asm/bootm.h>
  #include <nand.h>
  #include <part.h>
  #include <sparse_format.h>
  #include <image-sparse.h>
  #include <image.h>
  #include <asm/mach-imx/boot_mode.h>
  #include <asm/arch/sys_proto.h>
  #include <asm/setup.h>
  #include <environment.h>
  #ifdef CONFIG_ANDROID_RECOVERY
  #include <recovery.h>
  #endif

  #endif

  
  #ifdef CONFIG_BCB_SUPPORT
  #include "bcb.h"
  #endif
  
  #ifdef CONFIG_AVB_SUPPORT

  #include <dt_table.h>

  #include <fsl_avb.h>
  #endif

  #ifdef CONFIG_ANDROID_THINGS_SUPPORT
  #include <asm-generic/gpio.h>
  #include <asm/mach-imx/gpio.h>

  #include "../lib/avb/fsl/fsl_avbkey.h"
  #include "../arch/arm/include/asm/mach-imx/hab.h"

  #endif

  #ifdef CONFIG_FASTBOOT_LOCK
  #include "fastboot_lock_unlock.h"
  #endif

  #if defined(CONFIG_IMX_TRUSTY_OS) && defined(CONFIG_DUAL_BOOTLOADER)
  #include "u-boot/sha256.h"
  #endif
  
  #define FASTBOOT_VERSION		"0.4"

  #if defined(CONFIG_ANDROID_THINGS_SUPPORT) && defined(CONFIG_ARCH_IMX8M)
  #define FASTBOOT_COMMON_VAR_NUM 14
  #else
  #define FASTBOOT_COMMON_VAR_NUM 13

  #endif

  #define FASTBOOT_VAR_YES    "yes"
  #define FASTBOOT_VAR_NO     "no"

  #define FASTBOOT_INTERFACE_CLASS	0xff
  #define FASTBOOT_INTERFACE_SUB_CLASS	0x42
  #define FASTBOOT_INTERFACE_PROTOCOL	0x03
  
  #define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0  (0x0200)
  #define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1  (0x0040)
  #define TX_ENDPOINT_MAXIMUM_PACKET_SIZE      (0x0040)

  #define EP_BUFFER_SIZE			4096

  
  #ifdef CONFIG_FSL_FASTBOOT
  
  #define ANDROID_GPT_OFFSET         0
  #define ANDROID_GPT_SIZE           0x100000
  #define ANDROID_GPT_END	           0x4400
  
  #ifdef CONFIG_FLASH_MCUFIRMWARE_SUPPORT
  struct fastboot_device_info fastboot_firmwareinfo;
  #endif
  
  #if defined (CONFIG_ARCH_IMX8) || defined (CONFIG_ARCH_IMX8M)
  #define DST_DECOMPRESS_LEN 1024*1024*32
  #endif
  
  #endif

  #ifdef CONFIG_ANDROID_THINGS_SUPPORT
  #define FDT_PART_NAME "oem_bootloader"
  #else
  #define FDT_PART_NAME "dtbo"
  #endif

  #define MEK_8QM_EMMC 0

  /*
   * EP_BUFFER_SIZE must always be an integral multiple of maxpacket size
   * (64 or 512 or 1024), else we break on certain controllers like DWC3
   * that expect bulk OUT requests to be divisible by maxpacket size.
   */

  /* Offset (in u32's) of start and end fields in the zImage header. */
  #define ZIMAGE_START_ADDR	10
  #define ZIMAGE_END_ADDR	11

  /* common variables of fastboot getvar command */
  char *fastboot_common_var[FASTBOOT_COMMON_VAR_NUM] = {
  	"version",
  	"version-bootloader",
  	"version-baseband",
  	"product",
  	"secure",
  	"max-download-size",
  	"erase-block-size",
  	"logical-block-size",
  	"unlocked",
  	"off-mode-charge",
  	"battery-voltage",
  	"variant",

  	"battery-soc-ok",
  #if defined(CONFIG_ANDROID_THINGS_SUPPORT) && defined(CONFIG_ARCH_IMX8M)
  	"baseboard_id"
  #endif

  };

  /* at-vboot-state variable list */
  #ifdef CONFIG_AVB_ATX
  #define AT_VBOOT_STATE_VAR_NUM 6
  extern struct imx_sec_config_fuse_t const imx_sec_config_fuse;
  extern int fuse_read(u32 bank, u32 word, u32 *val);
  
  char *fastboot_at_vboot_state_var[AT_VBOOT_STATE_VAR_NUM] = {
  	"bootloader-locked",
  	"bootloader-min-versions",
  	"avb-perm-attr-set",
  	"avb-locked",
  	"avb-unlock-disabled",
  	"avb-min-versions"
  };
  #endif

  /* Boot metric variables */
  boot_metric metrics = {
  	.bll_1 = 0,
  	.ble_1 = 0,
  	.kl    = 0,
  	.kd    = 0,
  	.avb   = 0,
  	.odt   = 0,
  	.sw    = 0
  };
  
  typedef struct usb_req usb_req;
  struct usb_req {
  	struct usb_request *in_req;
  	usb_req *next;
  };

  struct f_fastboot {
  	struct usb_function usb_function;

  	/* IN/OUT EP's and corresponding requests */

  	struct usb_ep *in_ep, *out_ep;
  	struct usb_request *in_req, *out_req;

  	usb_req *front, *rear;

  };

  static char fb_ext_prop_name[] = "DeviceInterfaceGUID";
  static char fb_ext_prop_data[] = "{4866319A-F4D6-4374-93B9-DC2DEB361BA9}";
  
  static struct usb_os_desc_ext_prop fb_ext_prop = {
  	.type = 1,		/* NUL-terminated Unicode String (REG_SZ) */
  	.name = fb_ext_prop_name,
  	.data = fb_ext_prop_data,
  };
  
  /* 16 bytes of "Compatible ID" and "Subcompatible ID" */
  static char fb_cid[16] = {'W', 'I', 'N', 'U', 'S', 'B'};
  static struct usb_os_desc fb_os_desc = {
  	.ext_compat_id = fb_cid,
  };
  
  static struct usb_os_desc_table fb_os_desc_table = {
  	.os_desc = &fb_os_desc,
  };

  static inline struct f_fastboot *func_to_fastboot(struct usb_function *f)
  {
  	return container_of(f, struct f_fastboot, usb_function);
  }
  
  static struct f_fastboot *fastboot_func;
  static unsigned int download_size;
  static unsigned int download_bytes;
  
  static struct usb_endpoint_descriptor fs_ep_in = {
  	.bLength            = USB_DT_ENDPOINT_SIZE,
  	.bDescriptorType    = USB_DT_ENDPOINT,
  	.bEndpointAddress   = USB_DIR_IN,
  	.bmAttributes       = USB_ENDPOINT_XFER_BULK,

  	.wMaxPacketSize     = cpu_to_le16(64),

  };
  
  static struct usb_endpoint_descriptor fs_ep_out = {
  	.bLength		= USB_DT_ENDPOINT_SIZE,
  	.bDescriptorType	= USB_DT_ENDPOINT,
  	.bEndpointAddress	= USB_DIR_OUT,
  	.bmAttributes		= USB_ENDPOINT_XFER_BULK,

  	.wMaxPacketSize		= cpu_to_le16(64),
  };
  
  static struct usb_endpoint_descriptor hs_ep_in = {
  	.bLength		= USB_DT_ENDPOINT_SIZE,
  	.bDescriptorType	= USB_DT_ENDPOINT,
  	.bEndpointAddress	= USB_DIR_IN,
  	.bmAttributes		= USB_ENDPOINT_XFER_BULK,
  	.wMaxPacketSize		= cpu_to_le16(512),

  };
  
  static struct usb_endpoint_descriptor hs_ep_out = {
  	.bLength		= USB_DT_ENDPOINT_SIZE,
  	.bDescriptorType	= USB_DT_ENDPOINT,
  	.bEndpointAddress	= USB_DIR_OUT,
  	.bmAttributes		= USB_ENDPOINT_XFER_BULK,

  	.wMaxPacketSize		= cpu_to_le16(512),

  };
  
  static struct usb_interface_descriptor interface_desc = {
  	.bLength		= USB_DT_INTERFACE_SIZE,
  	.bDescriptorType	= USB_DT_INTERFACE,
  	.bInterfaceNumber	= 0x00,
  	.bAlternateSetting	= 0x00,
  	.bNumEndpoints		= 0x02,
  	.bInterfaceClass	= FASTBOOT_INTERFACE_CLASS,
  	.bInterfaceSubClass	= FASTBOOT_INTERFACE_SUB_CLASS,
  	.bInterfaceProtocol	= FASTBOOT_INTERFACE_PROTOCOL,
  };

  static struct usb_descriptor_header *fb_fs_function[] = {

  	(struct usb_descriptor_header *)&interface_desc,
  	(struct usb_descriptor_header *)&fs_ep_in,

  	(struct usb_descriptor_header *)&fs_ep_out,
  };
  
  static struct usb_descriptor_header *fb_hs_function[] = {
  	(struct usb_descriptor_header *)&interface_desc,
  	(struct usb_descriptor_header *)&hs_ep_in,

  	(struct usb_descriptor_header *)&hs_ep_out,
  	NULL,
  };

  static struct usb_endpoint_descriptor *
  fb_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
  	    struct usb_endpoint_descriptor *hs)
  {
  	if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
  		return hs;
  	return fs;
  }

  /*
   * static strings, in UTF-8
   */
  static const char fastboot_name[] = "Android Fastboot";
  
  static struct usb_string fastboot_string_defs[] = {
  	[0].s = fastboot_name,
  	{  }			/* end of list */
  };
  
  static struct usb_gadget_strings stringtab_fastboot = {
  	.language	= 0x0409,	/* en-us */
  	.strings	= fastboot_string_defs,
  };
  
  static struct usb_gadget_strings *fastboot_strings[] = {
  	&stringtab_fastboot,
  	NULL,
  };

  static void rx_handler_command(struct usb_ep *ep, struct usb_request *req);
  static int strcmp_l1(const char *s1, const char *s2);
  
  
  static char *fb_response_str;
  
  #ifdef CONFIG_FSL_FASTBOOT

  #ifndef TRUSTY_OS_MMC_BLKS
  #define TRUSTY_OS_MMC_BLKS 0x7FF
  #endif
  #ifndef TEE_HWPARTITION_ID
  #define TEE_HWPARTITION_ID 2
  #endif

  #define FASTBOOT_PARTITION_ALL "all"

  #define ANDROID_MBR_OFFSET	    0
  #define ANDROID_MBR_SIZE	    0x200

  #define ANDROID_BOOTLOADER_SIZE	    0x400000

  
  #define MMC_SATA_BLOCK_SIZE 512
  #define FASTBOOT_FBPARTS_ENV_MAX_LEN 1024
  /* To support the Android-style naming of flash */
  #define MAX_PTN		    32
  struct fastboot_ptentry g_ptable[MAX_PTN];
  unsigned int g_pcount;

  struct fastboot_device_info fastboot_devinfo = {0xff, 0xff};

  
  
  enum {
  	PTN_GPT_INDEX = 0,

  	PTN_TEE_INDEX,

  #ifdef CONFIG_FLASH_MCUFIRMWARE_SUPPORT
  	PTN_M4_OS_INDEX,
  #endif

  	PTN_ALL_INDEX,

  	PTN_BOOTLOADER_INDEX,
  };
  static unsigned int download_bytes_unpadded;
  
  static struct cmd_fastboot_interface interface = {
  	.rx_handler            = NULL,
  	.reset_handler         = NULL,
  	.product_name          = NULL,
  	.serial_no             = NULL,
  	.nand_block_size       = 0,
  	.transfer_buffer       = (unsigned char *)0xffffffff,
  	.transfer_buffer_size  = 0,
  };
  
  int read_from_partition_multi(const char* partition,
  		int64_t offset, size_t num_bytes, void* buffer, size_t* out_num_read)
  {
  	struct fastboot_ptentry *pte;
  	unsigned char *bdata;
  	unsigned char *out_buf = (unsigned char *)buffer;
  	unsigned char *dst, *dst64 = NULL;
  	unsigned long blksz;
  	unsigned long s, cnt;
  	size_t num_read = 0;
  	lbaint_t part_start, part_end, bs, be, bm, blk_num;
  	margin_pos_t margin;
  	struct blk_desc *fs_dev_desc = NULL;
  	int dev_no;
  	int ret;
  
  	assert(buffer != NULL && out_num_read != NULL);
  
  	dev_no = mmc_get_env_dev();
  	if ((fs_dev_desc = blk_get_dev("mmc", dev_no)) == NULL) {
  		printf("mmc device not found
  ");
  		return -1;
  	}
  
  	pte = fastboot_flash_find_ptn(partition);
  	if (!pte) {
  		printf("no %s partition
  ", partition);

  		fastboot_flash_dump_ptn();

  		return -1;
  	}
  
  	blksz = fs_dev_desc->blksz;
  	part_start = pte->start;
  	part_end = pte->start + pte->length - 1;
  
  	if (get_margin_pos((uint64_t)part_start, (uint64_t)part_end, blksz,
  				&margin, offset, num_bytes, true))
  		return -1;
  
  	bs = (lbaint_t)margin.blk_start;
  	be = (lbaint_t)margin.blk_end;
  	s = margin.start;
  	bm = margin.multi;
  
  	/* alloc a blksz mem */
  	bdata = (unsigned char *)memalign(ALIGN_BYTES, blksz);
  	if (bdata == NULL) {
  		printf("Failed to allocate memory!
  ");
  		return -1;
  	}
  
  	/* support multi blk read */
  	while (bs <= be) {
  		if (!s && bm > 1) {
  			dst = out_buf;
  			dst64 = PTR_ALIGN(out_buf, 64); /* for mmc blk read alignment */
  			if (dst64 != dst) {
  				dst = dst64;
  				bm--;
  			}
  			blk_num = bm;
  			cnt = bm * blksz;
  			bm = 0; /* no more multi blk */
  		} else {
  			blk_num = 1;
  			cnt = blksz - s;
  			if (num_read + cnt > num_bytes)
  				cnt = num_bytes - num_read;
  			dst = bdata;
  		}
  		if (blk_dread(fs_dev_desc, bs, blk_num, dst) != blk_num) {
  			ret = -1;
  			goto fail;
  		}
  
  		if (dst == bdata)
  			memcpy(out_buf, bdata + s, cnt);
  		else if (dst == dst64)
  			memcpy(out_buf, dst, cnt); /* internal copy */
  
  		s = 0;
  		bs += blk_num;
  		num_read += cnt;
  		out_buf += cnt;
  	}
  	*out_num_read = num_read;
  	ret = 0;
  
  fail:
  	free(bdata);
  	return ret;
  }
  
  static void save_env(struct fastboot_ptentry *ptn,
  		     char *var, char *val)
  {
  	env_set(var, val);
  	env_save();
  }
  
  /* When save = 0, just parse.  The input is unchanged
     When save = 1, parse and do the save.  The input is changed */
  static int parse_env(void *ptn, char *err_string, int save, int debug)
  {
  	int ret = 1;
  	unsigned int sets = 0;
  	unsigned int comment_start = 0;
  	char *var = NULL;
  	char *var_end = NULL;
  	char *val = NULL;
  	char *val_end = NULL;
  	unsigned int i;
  
  	char *buff = (char *)interface.transfer_buffer;
  	unsigned int size = download_bytes_unpadded;
  
  	/* The input does not have to be null terminated.
  	   This will cause a problem in the corner case
  	   where the last line does not have a new line.
  	   Put a null after the end of the input.
  
  	   WARNING : Input buffer is assumed to be bigger
  	   than the size of the input */
  	if (save)
  		buff[size] = 0;
  
  	for (i = 0; i < size; i++) {
  
  		if (NULL == var) {
  
  			/*
  			 * Check for comments, comment ok only on
  			 * mostly empty lines
  			 */
  			if (buff[i] == '#')
  				comment_start = 1;
  
  			if (comment_start) {
  				if  ((buff[i] == '\r') ||
  				     (buff[i] == '
  ')) {
  					comment_start = 0;
  				}
  			} else {
  				if (!((buff[i] == ' ') ||
  				      (buff[i] == '\t') ||
  				      (buff[i] == '\r') ||
  				      (buff[i] == '
  '))) {
  					/*
  					 * Normal whitespace before the
  					 * variable
  					 */
  					var = &buff[i];
  				}
  			}
  
  		} else if (((NULL == var_end) || (NULL == val)) &&
  			   ((buff[i] == '\r') || (buff[i] == '
  '))) {
  
  			/* This is the case when a variable
  			   is unset. */
  
  			if (save) {
  				/* Set the var end to null so the
  				   normal string routines will work
  
  				   WARNING : This changes the input */
  				buff[i] = '\0';
  
  				save_env(ptn, var, val);
  
  				if (debug)
  					printf("Unsetting %s
  ", var);
  			}
  
  			/* Clear the variable so state is parse is back
  			   to initial. */
  			var = NULL;
  			var_end = NULL;
  			sets++;
  		} else if (NULL == var_end) {
  			if ((buff[i] == ' ') ||
  			    (buff[i] == '\t'))
  				var_end = &buff[i];
  		} else if (NULL == val) {
  			if (!((buff[i] == ' ') ||
  			      (buff[i] == '\t')))
  				val = &buff[i];
  		} else if (NULL == val_end) {
  			if ((buff[i] == '\r') ||
  			    (buff[i] == '
  ')) {
  				/* look for escaped cr or ln */
  				if ('\\' == buff[i - 1]) {
  					/* check for dos */
  					if ((buff[i] == '\r') &&
  					    (buff[i+1] == '
  '))
  						buff[i + 1] = ' ';
  					buff[i - 1] = buff[i] = ' ';
  				} else {
  					val_end = &buff[i];
  				}
  			}
  		} else {
  			sprintf(err_string, "Internal Error");
  
  			if (debug)
  				printf("Internal error at %s %d
  ",
  				       __FILE__, __LINE__);
  			return 1;
  		}
  		/* Check if a var / val pair is ready */
  		if (NULL != val_end) {
  			if (save) {
  				/* Set the end's with nulls so
  				   normal string routines will
  				   work.
  
  				   WARNING : This changes the input */
  				*var_end = '\0';
  				*val_end = '\0';
  
  				save_env(ptn, var, val);
  
  				if (debug)
  					printf("Setting %s %s
  ", var, val);
  			}
  
  			/* Clear the variable so state is parse is back
  			   to initial. */
  			var = NULL;
  			var_end = NULL;
  			val = NULL;
  			val_end = NULL;
  
  			sets++;
  		}
  	}
  
  	/* Corner case
  	   Check for the case that no newline at end of the input */
  	if ((NULL != var) &&
  	    (NULL == val_end)) {
  		if (save) {
  			/* case of val / val pair */
  			if (var_end)
  				*var_end = '\0';
  			/* else case handled by setting 0 past
  			   the end of buffer.
  			   Similar for val_end being null */
  			save_env(ptn, var, val);
  
  			if (debug) {
  				if (var_end)
  					printf("Trailing Setting %s %s
  ", var, val);
  				else
  					printf("Trailing Unsetting %s
  ", var);
  			}
  		}
  		sets++;
  	}
  	/* Did we set anything ? */
  	if (0 == sets)
  		sprintf(err_string, "No variables set");
  	else
  		ret = 0;
  
  	return ret;
  }
  
  static int saveenv_to_ptn(struct fastboot_ptentry *ptn, char *err_string)
  {
  	int ret = 1;
  	int save = 0;
  	int debug = 0;
  
  	/* err_string is only 32 bytes
  	   Initialize with a generic error message. */
  	sprintf(err_string, "%s", "Unknown Error");
  
  	/* Parse the input twice.
  	   Only save to the enviroment if the entire input if correct */
  	save = 0;
  	if (0 == parse_env(ptn, err_string, save, debug)) {
  		save = 1;
  		ret = parse_env(ptn, err_string, save, debug);
  	}
  	return ret;
  }
  
  static int get_block_size(void);
  #ifdef CONFIG_FLASH_MCUFIRMWARE_SUPPORT
  static void process_flash_sf(const char *cmdbuf)
  {
  	int blksz = 0;
  	blksz = get_block_size();
  
  	if (download_bytes) {
  		struct fastboot_ptentry *ptn;
  		ptn = fastboot_flash_find_ptn(cmdbuf);
  		if (ptn == 0) {
  			fastboot_fail("partition does not exist");

  			fastboot_flash_dump_ptn();

  		} else if ((download_bytes > ptn->length * blksz)) {
  			fastboot_fail("image too large for partition");
  		/* TODO : Improve check for yaffs write */
  		} else {
  			int ret;
  			char sf_command[128];
  			/* Normal case */
  			/* Probe device */
  			sprintf(sf_command, "sf probe");
  			ret = run_command(sf_command, 0);
  			if (ret){
  				fastboot_fail("Probe sf failed");
  				return;
  			}
  			/* Erase */
  			sprintf(sf_command, "sf erase 0x%x 0x%x", ptn->start * blksz, /*start*/
  			ptn->length * blksz /*size*/);
  			ret = run_command(sf_command, 0);
  			if (ret) {
  				fastboot_fail("Erasing sf failed");
  				return;
  			}
  			/* Write image */
  			sprintf(sf_command, "sf write 0x%x 0x%x 0x%x",
  					(unsigned int)(ulong)interface.transfer_buffer, /* source */
  					ptn->start * blksz, /* start */
  					download_bytes /*size*/);
  			printf("sf write '%s'
  ", ptn->name);
  			ret = run_command(sf_command, 0);
  			if (ret){
  				fastboot_fail("Writing sf failed");
  				return;
  			}
  			printf("sf write finished '%s'
  ", ptn->name);
  			fastboot_okay("");
  		}
  	} else {
  		fastboot_fail("no image downloaded");
  	}
  }
  
  #ifdef CONFIG_ARCH_IMX8M
  /* Check if the mcu image is built for running from TCM */
  static bool is_tcm_image(unsigned char *image_addr)
  {
  	u32 stack;
  
  	stack = *(u32 *)image_addr;
  
  	if ((stack != (u32)ANDROID_MCU_FIRMWARE_HEADER_STACK)) {
  		printf("Please flash mcu firmware images for running from TCM
  ");
  		return false;
  	} else
  		return true;
  }
  
  static int do_bootmcu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  {
  	int ret;
  	size_t out_num_read;
  	void *m4_base_addr = (void *)M4_BOOTROM_BASE_ADDR;
  	char command[32];
  
  	ret = read_from_partition_multi(FASTBOOT_MCU_FIRMWARE_PARTITION,
  			0, ANDROID_MCU_FIRMWARE_SIZE, (void *)m4_base_addr, &out_num_read);
  	if ((ret != 0) || (out_num_read != ANDROID_MCU_FIRMWARE_SIZE)) {
  		printf("Read M4 images failed!
  ");
  		return 1;
  	} else {
  		printf("run command: 'bootaux 0x%x'
  ",(unsigned int)(ulong)m4_base_addr);
  
  		sprintf(command, "bootaux 0x%x", (unsigned int)(ulong)m4_base_addr);
  		ret = run_command(command, 0);
  		if (ret) {
  			printf("run 'bootaux' command failed!
  ");
  			return 1;
  		}
  	}
  	return 0;
  }
  
  U_BOOT_CMD(
  	bootmcu, 1, 0, do_bootmcu,
  	"boot mcu images
  ",
  	"boot mcu images from 'm4_os' partition, only support images run from TCM"
  );
  #endif
  #endif /* CONFIG_FLASH_MCUFIRMWARE_SUPPORT */

  static ulong bootloader_mmc_offset(void)
  {
  	if (is_imx8m() || (is_imx8() && is_soc_rev(CHIP_REV_A)))
  		return 0x8400;

  	else if (is_imx8qm()) {

  		if (MEK_8QM_EMMC == fastboot_devinfo.dev_id)

  		/* target device is eMMC boot0 partition, bootloader offset is 0x0 */
  			return 0x0;
  		else
  		/* target device is SD card, bootloader offset is 0x8000 */
  			return 0x8000;
  	}

  	else if (is_imx8())
  		return 0x8000;
  	else
  		return 0x400;
  }

  #if defined(CONFIG_FASTBOOT_STORAGE_MMC) || defined(CONFIG_FASTBOOT_STORAGE_SATA)

  static int is_raw_partition(struct fastboot_ptentry *ptn)
  {
  #ifdef CONFIG_ANDROID_AB_SUPPORT
  	if (ptn && (!strncmp(ptn->name, FASTBOOT_PARTITION_BOOTLOADER,
  			strlen(FASTBOOT_PARTITION_BOOTLOADER)) ||
  			!strncmp(ptn->name, FASTBOOT_PARTITION_GPT,
  			strlen(FASTBOOT_PARTITION_GPT)) ||
  			!strncmp(ptn->name, FASTBOOT_PARTITION_BOOT_A,
  			strlen(FASTBOOT_PARTITION_BOOT_A)) ||
  			!strncmp(ptn->name, FASTBOOT_PARTITION_BOOT_B,
  			strlen(FASTBOOT_PARTITION_BOOT_B)) ||
  #ifdef CONFIG_FASTBOOT_LOCK
  			!strncmp(ptn->name, FASTBOOT_PARTITION_FBMISC,
  			strlen(FASTBOOT_PARTITION_FBMISC)) ||
  #endif
  			!strncmp(ptn->name, FASTBOOT_PARTITION_MISC,
  			strlen(FASTBOOT_PARTITION_MISC)))) {
  #else
  	 if (ptn && (!strncmp(ptn->name, FASTBOOT_PARTITION_BOOTLOADER,
  		strlen(FASTBOOT_PARTITION_BOOTLOADER)) ||
  		!strncmp(ptn->name, FASTBOOT_PARTITION_BOOT,
  		strlen(FASTBOOT_PARTITION_BOOT)) ||
  #ifdef CONFIG_FASTBOOT_LOCK
  		!strncmp(ptn->name, FASTBOOT_PARTITION_FBMISC,
  		strlen(FASTBOOT_PARTITION_FBMISC)) ||
  #endif
  		!strncmp(ptn->name, FASTBOOT_PARTITION_MISC,
  		strlen(FASTBOOT_PARTITION_MISC)))) {
  #endif
  		printf("support sparse flash partition for %s
  ", ptn->name);
  		return 1;
  	 } else
  		return 0;
  }
  
  static lbaint_t mmc_sparse_write(struct sparse_storage *info,
  		lbaint_t blk, lbaint_t blkcnt, const void *buffer)
  {
  #define SPARSE_FILL_BUF_SIZE (2 * 1024 * 1024)

  	struct blk_desc *dev_desc = (struct blk_desc *)info->priv;
  	ulong ret = 0;
  	void *data;
  	int fill_buf_num_blks, cnt;
  
  	if ((unsigned long)buffer & (CONFIG_SYS_CACHELINE_SIZE - 1)) {
  
  		fill_buf_num_blks = SPARSE_FILL_BUF_SIZE / info->blksz;
  
  		data = memalign(CONFIG_SYS_CACHELINE_SIZE, fill_buf_num_blks * info->blksz);
  
  		while (blkcnt) {
  
  			if (blkcnt > fill_buf_num_blks)
  				cnt = fill_buf_num_blks;
  			else
  				cnt = blkcnt;
  
  			memcpy(data, buffer, cnt * info->blksz);
  
  			ret += blk_dwrite(dev_desc, blk, cnt, data);
  
  			blk += cnt;
  			blkcnt -= cnt;
  			buffer = (void *)((unsigned long)buffer + cnt * info->blksz);
  
  		}
  
  		free(data);
  	} else {
  		ret = blk_dwrite(dev_desc, blk, blkcnt, buffer);
  	}
  
  	return ret;
  }
  
  static lbaint_t mmc_sparse_reserve(struct sparse_storage *info,
  		lbaint_t blk, lbaint_t blkcnt)
  {
  	return blkcnt;
  }
  
  /*judge wether the gpt image and bootloader image are overlay*/
  bool bootloader_gpt_overlay(void)
  {
  	return (g_ptable[PTN_GPT_INDEX].partition_id  == g_ptable[PTN_BOOTLOADER_INDEX].partition_id  &&

  		bootloader_mmc_offset() < ANDROID_GPT_END);

  }
  
  int write_backup_gpt(void)
  {
  	int mmc_no = 0;
  	struct mmc *mmc;
  	struct blk_desc *dev_desc;
  
  	mmc_no = fastboot_devinfo.dev_id;
  	mmc = find_mmc_device(mmc_no);
  	if (mmc == NULL) {
  		printf("invalid mmc device
  ");
  		return -1;
  	}
  	dev_desc = blk_get_dev("mmc", mmc_no);

  	if (dev_desc == NULL) {
  		printf("Can't get Block device MMC %d
  ",
  			mmc_no);
  		return -ENODEV;
  	}

  
  	/* write backup get partition */
  	if (write_backup_gpt_partitions(dev_desc, interface.transfer_buffer)) {
  		printf("writing GPT image fail
  ");
  		return -1;
  	}
  
  	printf("flash backup gpt image successfully
  ");
  	return 0;
  }

  static int get_fastboot_target_dev(char *mmc_dev, struct fastboot_ptentry *ptn)
  {
  	int dev = 0;
  	struct mmc *target_mmc;
  
  	/* Support flash bootloader to mmc 'target_ubootdev' devices, if the
  	* 'target_ubootdev' env is not set just flash bootloader to current
  	* mmc device.
  	*/
  	if ((!strncmp(ptn->name, FASTBOOT_PARTITION_BOOTLOADER,
  					sizeof(FASTBOOT_PARTITION_BOOTLOADER))) &&
  					(env_get("target_ubootdev"))) {
  		dev = simple_strtoul(env_get("target_ubootdev"), NULL, 10);

  
  		/* if target_ubootdev is set, it must be that users want to change
  		 * fastboot device, then fastboot environment need to be updated */
  		fastboot_setup();

  		target_mmc = find_mmc_device(dev);
  		if ((target_mmc == NULL) || mmc_init(target_mmc)) {
  			printf("MMC card init failed!
  ");
  			return -1;
  		} else {
  			printf("Flash target is mmc%d
  ", dev);
  			if (target_mmc->part_config != MMCPART_NOAVAILABLE)
  				sprintf(mmc_dev, "mmc dev %x %x", dev, /*slot no*/
  						FASTBOOT_MMC_BOOT_PARTITION_ID/*part no*/);
  			else
  				sprintf(mmc_dev, "mmc dev %x", dev);
  			}
  	} else if (ptn->partition_id != FASTBOOT_MMC_NONE_PARTITION_ID)
  		sprintf(mmc_dev, "mmc dev %x %x",
  				fastboot_devinfo.dev_id, /*slot no*/
  				ptn->partition_id /*part no*/);
  	else
  		sprintf(mmc_dev, "mmc dev %x",
  				fastboot_devinfo.dev_id /*slot no*/);
  	return 0;
  }

  static void process_flash_mmc(const char *cmdbuf)
  {
  	if (download_bytes) {
  		struct fastboot_ptentry *ptn;

  
  		/* Next is the partition name */
  		ptn = fastboot_flash_find_ptn(cmdbuf);
  		if (ptn == NULL) {
  			fastboot_fail("partition does not exist");

  			fastboot_flash_dump_ptn();

  		} else if ((download_bytes >
  			   ptn->length * MMC_SATA_BLOCK_SIZE) &&
  				!(ptn->flags & FASTBOOT_PTENTRY_FLAGS_WRITE_ENV)) {
  			printf("Image too large for the partition
  ");
  			fastboot_fail("image too large for partition");
  		} else if (ptn->flags & FASTBOOT_PTENTRY_FLAGS_WRITE_ENV) {
  			/* Since the response can only be 64 bytes,
  			   there is no point in having a large error message. */
  			char err_string[32];
  			if (saveenv_to_ptn(ptn, &err_string[0])) {
  				printf("savenv '%s' failed : %s
  ", ptn->name, err_string);
  				fastboot_fail(err_string);
  			} else {
  				printf("partition '%s' saveenv-ed
  ", ptn->name);
  				fastboot_okay("");
  			}
  		} else {
  			unsigned int temp;

  			char blk_dev[128];
  			char blk_write[128];
  			int blkret;

  
  			printf("writing to partition '%s'
  ", ptn->name);

  			/* Get target flash device. */

  			if (get_fastboot_target_dev(blk_dev, ptn) != 0)

  				return;

  
  			if (!is_raw_partition(ptn) &&
  				is_sparse_image(interface.transfer_buffer)) {

  				int dev_no = 0;

  				struct mmc *mmc;
  				struct blk_desc *dev_desc;
  				disk_partition_t info;
  				struct sparse_storage sparse;

  				dev_no = fastboot_devinfo.dev_id;

  				printf("sparse flash target is %s:%d
  ",
  				       fastboot_devinfo.type == DEV_SATA ? "sata" : "mmc",
  				       dev_no);
  				if (fastboot_devinfo.type == DEV_MMC) {
  					mmc = find_mmc_device(dev_no);
  					if (mmc && mmc_init(mmc))
  						printf("MMC card init failed!
  ");
  				}

  				dev_desc = blk_get_dev(fastboot_devinfo.type == DEV_SATA ? "sata" : "mmc", dev_no);

  				if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {

  					printf("** Block device %s %d not supported
  ",
  					       fastboot_devinfo.type == DEV_SATA ? "sata" : "mmc",
  					       dev_no);

  					return;
  				}

  				if( strncmp(ptn->name, FASTBOOT_PARTITION_ALL,
  					    strlen(FASTBOOT_PARTITION_ALL)) == 0) {
  					info.blksz = dev_desc->blksz;
  					info.size = dev_desc->lba;
  					info.start = 0;
  				} else {

  					if (part_get_info(dev_desc,
  							  ptn->partition_index, &info)) {
  						printf("Bad partition index:%d for partition:%s
  ",
  						ptn->partition_index, ptn->name);
  						return;
  					}
  				}

  				printf("writing to partition '%s' for sparse, buffer size %d
  ",
  						ptn->name, download_bytes);
  
  				sparse.blksz = info.blksz;
  				sparse.start = info.start;
  				sparse.size = info.size;
  				sparse.write = mmc_sparse_write;
  				sparse.reserve = mmc_sparse_reserve;
  				printf("Flashing sparse image at offset " LBAFU "
  ",
  				       sparse.start);
  
  				sparse.priv = dev_desc;
  				write_sparse_image(&sparse, ptn->name, interface.transfer_buffer,
  						   download_bytes);
  
  			} else {
  				/* Will flash images in below case:
  				 * 1. Is not gpt partition.
  				 * 2. Is gpt partition but no overlay detected.
  				 * */
  				if (strncmp(ptn->name, "gpt", 3) || !bootloader_gpt_overlay()) {
  					/* block count */
  					if (strncmp(ptn->name, "gpt", 3) == 0) {
  						temp = (ANDROID_GPT_END +
  								MMC_SATA_BLOCK_SIZE - 1) /
  								MMC_SATA_BLOCK_SIZE;
  					} else {
  						temp = (download_bytes +
  								MMC_SATA_BLOCK_SIZE - 1) /
  								MMC_SATA_BLOCK_SIZE;
  					}

  					sprintf(blk_write, "%s write 0x%x 0x%x 0x%x",
  						fastboot_devinfo.type == DEV_SATA ? "sata" : "mmc",
  						(unsigned int)(uintptr_t)interface.transfer_buffer, /*source*/
  						ptn->start, /*dest*/
  						temp /*length*/);

  
  					printf("Initializing '%s'
  ", ptn->name);

  					blkret = run_command(blk_dev, 0);
  					if (blkret)
  						fastboot_fail("Init of BLK device failed");

  					else
  						fastboot_okay("");
  
  					printf("Writing '%s'
  ", ptn->name);

  					if (run_command(blk_write, 0)) {

  						printf("Writing '%s' FAILED!
  ", ptn->name);
  						fastboot_fail("Write partition failed");
  					} else {
  						printf("Writing '%s' DONE!
  ", ptn->name);
  						fastboot_okay("");
  					}
  				}
  				/* Write backup gpt image */
  				if (strncmp(ptn->name, "gpt", 3) == 0) {
  					if (write_backup_gpt())
  						fastboot_fail("write backup GPT image fail");
  					else
  						fastboot_okay("");
  
  					/* will force scan the device,
  					 * so dev_desc can be re-inited
  					 * with the latest data */

  					run_command(blk_dev, 0);

  				}
  			}
  		}
  	} else {
  		fastboot_fail("no image downloaded");
  	}
  }
  
  #endif
  
  #if defined(CONFIG_FASTBOOT_STORAGE_MMC)
  static void process_erase_mmc(const char *cmdbuf, char *response)
  {
  	int mmc_no = 0;
  	lbaint_t blks, blks_start, blks_size, grp_size;
  	struct mmc *mmc;
  	struct blk_desc *dev_desc;
  	struct fastboot_ptentry *ptn;
  	disk_partition_t info;
  
  	ptn = fastboot_flash_find_ptn(cmdbuf);
  	if ((ptn == NULL) || (ptn->flags & FASTBOOT_PTENTRY_FLAGS_UNERASEABLE)) {
  		sprintf(response, "FAILpartition does not exist or uneraseable");

  		fastboot_flash_dump_ptn();

  		return;
  	}
  
  	mmc_no = fastboot_devinfo.dev_id;
  	printf("erase target is MMC:%d
  ", mmc_no);
  
  	mmc = find_mmc_device(mmc_no);
  	if ((mmc == NULL) || mmc_init(mmc)) {
  		printf("MMC card init failed!
  ");
  		return;
  	}
  
  	dev_desc = blk_get_dev("mmc", mmc_no);
  	if (NULL == dev_desc) {
  		printf("Block device MMC %d not supported
  ",
  			mmc_no);
  		sprintf(response, "FAILnot valid MMC card");
  		return;
  	}
  
  	if (part_get_info(dev_desc,
  				ptn->partition_index, &info)) {
  		printf("Bad partition index:%d for partition:%s
  ",
  		ptn->partition_index, ptn->name);
  		sprintf(response, "FAILerasing of MMC card");
  		return;
  	}
  
  	/* Align blocks to erase group size to avoid erasing other partitions */
  	grp_size = mmc->erase_grp_size;
  	blks_start = (info.start + grp_size - 1) & ~(grp_size - 1);
  	if (info.size >= grp_size)
  		blks_size = (info.size - (blks_start - info.start)) &
  				(~(grp_size - 1));
  	else
  		blks_size = 0;
  
  	printf("Erasing blocks " LBAFU " to " LBAFU " due to alignment
  ",
  	       blks_start, blks_start + blks_size);
  
  	blks = blk_derase(dev_desc, blks_start, blks_size);
  	if (blks != blks_size) {
  		printf("failed erasing from device %d", dev_desc->devnum);
  		sprintf(response, "FAILerasing of MMC card");
  		return;
  	}
  
  	printf("........ erased " LBAFU " bytes from '%s'
  ",
  	       blks_size * info.blksz, cmdbuf);
  	sprintf(response, "OKAY");
  
      return;
  }
  #endif
  
  #if defined(CONFIG_FASTBOOT_STORAGE_SATA)
  static void process_erase_sata(const char *cmdbuf, char *response)
  {
      return;
  }
  #endif
  
  static void rx_process_erase(const char *cmdbuf, char *response)
  {
  	switch (fastboot_devinfo.type) {
  #if defined(CONFIG_FASTBOOT_STORAGE_SATA)
  	case DEV_SATA:
  		process_erase_sata(cmdbuf, response);
  		break;
  #endif
  #if defined(CONFIG_FASTBOOT_STORAGE_MMC)
  	case DEV_MMC:
  		process_erase_mmc(cmdbuf, response);
  		break;
  #endif
  	default:
  		printf("Not support flash command for current device %d
  ",
  			fastboot_devinfo.type);
  		sprintf(response,
  			   "FAILfailed to flash device");
  		break;
  	}
  }
  
  static void rx_process_flash(const char *cmdbuf)
  {
  /* Check if we need to flash mcu firmware */
  #ifdef CONFIG_FLASH_MCUFIRMWARE_SUPPORT
  	if (!strncmp(cmdbuf, FASTBOOT_MCU_FIRMWARE_PARTITION,
  				sizeof(FASTBOOT_MCU_FIRMWARE_PARTITION))) {
  		switch (fastboot_firmwareinfo.type) {
  		case DEV_SF:
  			process_flash_sf(cmdbuf);
  			break;
  #ifdef CONFIG_ARCH_IMX8M
  		case DEV_MMC:
  			if (is_tcm_image(interface.transfer_buffer))
  				process_flash_mmc(cmdbuf);
  			break;
  #endif
  		default:
  			printf("Don't support flash firmware
  ");
  		}
  		return;
  	}
  #endif
  	/* Normal case */
  	switch (fastboot_devinfo.type) {
  #if defined(CONFIG_FASTBOOT_STORAGE_SATA)
  	case DEV_SATA:

  		process_flash_mmc(cmdbuf);

  		break;
  #endif
  #if defined(CONFIG_FASTBOOT_STORAGE_MMC)
  	case DEV_MMC:
  		process_flash_mmc(cmdbuf);
  		break;
  #endif
  	default:
  		printf("Not support flash command for current device %d
  ",
  			fastboot_devinfo.type);
  		fastboot_fail("failed to flash device");
  		break;
  	}
  }
  
  
  static void parameters_setup(void)
  {
  	interface.nand_block_size = 0;
  	interface.transfer_buffer =

  				(unsigned char *)env_get_ulong("fastboot_buffer", 16, CONFIG_FASTBOOT_BUF_ADDR);

  	interface.transfer_buffer_size =
  				CONFIG_FASTBOOT_BUF_SIZE;
  }

  static int _fastboot_setup_dev(int *switched)

  {
  	char *fastboot_env;

  	struct fastboot_device_info devinfo;;

  	fastboot_env = env_get("fastboot_dev");
  
  	if (fastboot_env) {
  		if (!strcmp(fastboot_env, "sata")) {

  			devinfo.type = DEV_SATA;
  			devinfo.dev_id = 0;

  #if defined(CONFIG_FASTBOOT_STORAGE_MMC)
  		} else if (!strncmp(fastboot_env, "mmc", 3)) {

  			devinfo.type = DEV_MMC;

  			if(env_get("target_ubootdev"))
  				devinfo.dev_id = simple_strtoul(env_get("target_ubootdev"), NULL, 10);
  			else
  				devinfo.dev_id = mmc_get_env_dev();

  #endif

  		} else {
  			return 1;

  		}
  	} else {
  		return 1;
  	}
  #ifdef CONFIG_FLASH_MCUFIRMWARE_SUPPORT
  	/* For imx7ulp, flash m4 images directly to spi nor-flash, M4 will
  	 * run automatically after powered on. For imx8mq, flash m4 images to
  	 * physical partition 'm4_os', m4 will be kicked off by A core. */
  	fastboot_firmwareinfo.type = ANDROID_MCU_FRIMWARE_DEV_TYPE;
  #endif

  	if (switched) {
  		if (devinfo.type != fastboot_devinfo.type || devinfo.dev_id != fastboot_devinfo.dev_id)
  			*switched = 1;
  		else
  			*switched = 0;
  	}
  
  	fastboot_devinfo.type	 = devinfo.type;
  	fastboot_devinfo.dev_id = devinfo.dev_id;

  	return 0;
  }
  
  #if defined(CONFIG_FASTBOOT_STORAGE_SATA) \
  	|| defined(CONFIG_FASTBOOT_STORAGE_MMC)
  /**
     @mmc_dos_partition_index: the partition index in mbr.
     @mmc_partition_index: the boot partition or user partition index,
     not related to the partition table.
   */
  static int _fastboot_parts_add_ptable_entry(int ptable_index,
  				      int mmc_dos_partition_index,
  				      int mmc_partition_index,
  				      const char *name,
  				      const char *fstype,
  				      struct blk_desc *dev_desc,
  				      struct fastboot_ptentry *ptable)
  {
  	disk_partition_t info;
  
  	if (part_get_info(dev_desc,
  			       mmc_dos_partition_index, &info)) {
  		debug("Bad partition index:%d for partition:%s
  ",
  		       mmc_dos_partition_index, name);
  		return -1;
  	}
  	ptable[ptable_index].start = info.start;
  	ptable[ptable_index].length = info.size;
  	ptable[ptable_index].partition_id = mmc_partition_index;
  	ptable[ptable_index].partition_index = mmc_dos_partition_index;
  	strncpy(ptable[ptable_index].name, (const char *)info.name,
  			sizeof(ptable[ptable_index].name) - 1);
  
  #ifdef CONFIG_PARTITION_UUIDS
  	strcpy(ptable[ptable_index].uuid, (const char *)info.uuid);
  #endif
  #ifdef CONFIG_ANDROID_AB_SUPPORT
  	if (!strcmp((const char *)info.name, FASTBOOT_PARTITION_SYSTEM_A) ||

  	    !strcmp((const char *)info.name, FASTBOOT_PARTITION_SYSTEM_B) ||
  	    !strcmp((const char *)info.name, FASTBOOT_PARTITION_OEM_A) ||
  	    !strcmp((const char *)info.name, FASTBOOT_PARTITION_VENDOR_A) ||
  	    !strcmp((const char *)info.name, FASTBOOT_PARTITION_OEM_B) ||
  	    !strcmp((const char *)info.name, FASTBOOT_PARTITION_VENDOR_B) ||
  	    !strcmp((const char *)info.name, FASTBOOT_PARTITION_DATA))

  #else
  	if (!strcmp((const char *)info.name, FASTBOOT_PARTITION_SYSTEM) ||

  	    !strcmp((const char *)info.name, FASTBOOT_PARTITION_DATA) ||
  	    !strcmp((const char *)info.name, FASTBOOT_PARTITION_DEVICE) ||
  	    !strcmp((const char *)info.name, FASTBOOT_PARTITION_CACHE))

  #endif
  		strcpy(ptable[ptable_index].fstype, "ext4");
  	else
  		strcpy(ptable[ptable_index].fstype, "raw");
  	return 0;
  }
  
  static int _fastboot_parts_load_from_ptable(void)
  {
  	int i;
  #ifdef CONFIG_CMD_SATA
  	int sata_device_no;
  #endif
  
  	/* mmc boot partition: -1 means no partition, 0 user part., 1 boot part.
  	 * default is no partition, for emmc default user part, except emmc*/
  	int boot_partition = FASTBOOT_MMC_NONE_PARTITION_ID;
      int user_partition = FASTBOOT_MMC_NONE_PARTITION_ID;
  
  	struct mmc *mmc;
  	struct blk_desc *dev_desc;
  	struct fastboot_ptentry ptable[MAX_PTN];
  
  	/* sata case in env */
  	if (fastboot_devinfo.type == DEV_SATA) {
  #ifdef CONFIG_CMD_SATA
  		puts("flash target is SATA
  ");
  		if (sata_initialize())
  			return -1;
  		sata_device_no = CONFIG_FASTBOOT_SATA_NO;
  		if (sata_device_no >= CONFIG_SYS_SATA_MAX_DEVICE) {
  			printf("Unknown SATA(%d) device for fastboot
  ",
  				sata_device_no);
  			return -1;
  		}
  		dev_desc = sata_get_dev(sata_device_no);
  #else /*! CONFIG_CMD_SATA*/
  		puts("SATA isn't buildin
  ");
  		return -1;
  #endif /*! CONFIG_CMD_SATA*/
  	} else if (fastboot_devinfo.type == DEV_MMC) {
  		int mmc_no = 0;
  		mmc_no = fastboot_devinfo.dev_id;
  
  		printf("flash target is MMC:%d
  ", mmc_no);
  		mmc = find_mmc_device(mmc_no);

  		if (mmc == NULL) {
  			printf("invalid mmc device %d
  ", mmc_no);
  			return -1;
  		}

  		/* Force to init mmc */
  		mmc->has_init = 0;

  		if (mmc_init(mmc))

  			printf("MMC card init failed!
  ");
  
  		dev_desc = blk_get_dev("mmc", mmc_no);
  		if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
  			printf("** Block device MMC %d not supported
  ",
  				mmc_no);
  			return -1;
  		}
  
  		/* multiple boot paritions for eMMC 4.3 later */
  		if (mmc->part_config != MMCPART_NOAVAILABLE) {
  			boot_partition = FASTBOOT_MMC_BOOT_PARTITION_ID;
  			user_partition = FASTBOOT_MMC_USER_PARTITION_ID;
  		}
  	} else {
  		printf("Can't setup partition table on this device %d
  ",
  			fastboot_devinfo.type);
  		return -1;
  	}
  
  	memset((char *)ptable, 0,
  		    sizeof(struct fastboot_ptentry) * (MAX_PTN));
  	/* GPT */
  	strcpy(ptable[PTN_GPT_INDEX].name, FASTBOOT_PARTITION_GPT);
  	ptable[PTN_GPT_INDEX].start = ANDROID_GPT_OFFSET / dev_desc->blksz;
  	ptable[PTN_GPT_INDEX].length = ANDROID_GPT_SIZE  / dev_desc->blksz;
  	ptable[PTN_GPT_INDEX].partition_id = user_partition;
  	ptable[PTN_GPT_INDEX].flags = FASTBOOT_PTENTRY_FLAGS_UNERASEABLE;
  	strcpy(ptable[PTN_GPT_INDEX].fstype, "raw");

  #ifndef CONFIG_ARM64

  	/* Trusty OS */
  	strcpy(ptable[PTN_TEE_INDEX].name, FASTBOOT_PARTITION_TEE);
  	ptable[PTN_TEE_INDEX].start = 0;
  	ptable[PTN_TEE_INDEX].length = TRUSTY_OS_MMC_BLKS;
  	ptable[PTN_TEE_INDEX].partition_id = TEE_HWPARTITION_ID;
  	strcpy(ptable[PTN_TEE_INDEX].fstype, "raw");

  #endif

  	/* Add m4_os partition if we support mcu firmware image flash */
  #ifdef CONFIG_FLASH_MCUFIRMWARE_SUPPORT
  	strcpy(ptable[PTN_M4_OS_INDEX].name, FASTBOOT_MCU_FIRMWARE_PARTITION);
  	ptable[PTN_M4_OS_INDEX].start = ANDROID_MCU_FIRMWARE_START / dev_desc->blksz;
  	ptable[PTN_M4_OS_INDEX].length = ANDROID_MCU_FIRMWARE_SIZE / dev_desc->blksz;
  	ptable[PTN_M4_OS_INDEX].flags = FASTBOOT_PTENTRY_FLAGS_UNERASEABLE;
  	ptable[PTN_M4_OS_INDEX].partition_id = user_partition;
  	strcpy(ptable[PTN_M4_OS_INDEX].fstype, "raw");
  #endif

  	strcpy(ptable[PTN_ALL_INDEX].name, FASTBOOT_PARTITION_ALL);
  	ptable[PTN_ALL_INDEX].start = 0;
  	ptable[PTN_ALL_INDEX].length = dev_desc->lba;
  	ptable[PTN_ALL_INDEX].partition_id = user_partition;
  	strcpy(ptable[PTN_ALL_INDEX].fstype, "device");

  	/* Bootloader */
  	strcpy(ptable[PTN_BOOTLOADER_INDEX].name, FASTBOOT_PARTITION_BOOTLOADER);
  	ptable[PTN_BOOTLOADER_INDEX].start =

  				bootloader_mmc_offset() / dev_desc->blksz;

  	ptable[PTN_BOOTLOADER_INDEX].length =
  				 ANDROID_BOOTLOADER_SIZE / dev_desc->blksz;
  	ptable[PTN_BOOTLOADER_INDEX].partition_id = boot_partition;
  	ptable[PTN_BOOTLOADER_INDEX].flags = FASTBOOT_PTENTRY_FLAGS_UNERASEABLE;
  	strcpy(ptable[PTN_BOOTLOADER_INDEX].fstype, "raw");
  
  	int tbl_idx;
  	int part_idx = 1;
  	int ret;
  	for (tbl_idx = PTN_BOOTLOADER_INDEX + 1; tbl_idx < MAX_PTN; tbl_idx++) {
  		ret = _fastboot_parts_add_ptable_entry(tbl_idx,
  				part_idx++,
  				user_partition,
  				NULL,
  				NULL,
  				dev_desc, ptable);
  		if (ret)
  			break;
  	}
  	for (i = 0; i < tbl_idx; i++)
  		fastboot_flash_add_ptn(&ptable[i]);
  
  	return 0;
  }
  #endif /*CONFIG_FASTBOOT_STORAGE_SATA || CONFIG_FASTBOOT_STORAGE_MMC*/
  
  static void _fastboot_load_partitions(void)
  {
  	g_pcount = 0;
  #if defined(CONFIG_FASTBOOT_STORAGE_SATA) \
  	|| defined(CONFIG_FASTBOOT_STORAGE_MMC)
  	_fastboot_parts_load_from_ptable();
  #endif
  }
  
  /*
   * Android style flash utilties */
  void fastboot_flash_add_ptn(struct fastboot_ptentry *ptn)
  {
  	if (g_pcount < MAX_PTN) {
  		memcpy(g_ptable + g_pcount, ptn, sizeof(struct fastboot_ptentry));
  		g_pcount++;
  	}
  }
  
  void fastboot_flash_dump_ptn(void)
  {
  	unsigned int n;
  	for (n = 0; n < g_pcount; n++) {
  		struct fastboot_ptentry *ptn = g_ptable + n;
  		printf("idx %d, ptn %d name='%s' start=%d len=%d
  ",
  			n, ptn->partition_index, ptn->name, ptn->start, ptn->length);
  	}
  }
  
  
  struct fastboot_ptentry *fastboot_flash_find_ptn(const char *name)
  {
  	unsigned int n;
  
  	for (n = 0; n < g_pcount; n++) {
  		/* Make sure a substring is not accepted */
  		if (strlen(name) == strlen(g_ptable[n].name)) {
  			if (0 == strcmp(g_ptable[n].name, name))
  				return g_ptable + n;
  		}
  	}

  	return 0;
  }
  
  int fastboot_flash_find_index(const char *name)
  {
  	struct fastboot_ptentry *ptentry = fastboot_flash_find_ptn(name);
  	if (ptentry == NULL) {
  		printf("cannot get the partion info for %s
  ",name);

  		fastboot_flash_dump_ptn();

  		return -1;
  	}
  	return ptentry->partition_index;
  }
  
  struct fastboot_ptentry *fastboot_flash_get_ptn(unsigned int n)
  {
  	if (n < g_pcount)
  		return g_ptable + n;
  	else
  		return 0;
  }
  
  unsigned int fastboot_flash_get_ptn_count(void)
  {
  	return g_pcount;
  }
  
  #ifdef CONFIG_FSL_FASTBOOT
  void board_fastboot_setup(void)
  {
  #if defined(CONFIG_FASTBOOT_STORAGE_MMC)
  	static char boot_dev_part[32];
  	u32 dev_no;
  #endif
  	switch (get_boot_device()) {
  #if defined(CONFIG_FASTBOOT_STORAGE_MMC)
  	case SD1_BOOT:
  	case SD2_BOOT:
  	case SD3_BOOT:
  	case SD4_BOOT:
  	case MMC1_BOOT:
  	case MMC2_BOOT:
  	case MMC3_BOOT:
  	case MMC4_BOOT:
  		dev_no = mmc_get_env_dev();
  		sprintf(boot_dev_part,"mmc%d",dev_no);
  		if (!env_get("fastboot_dev"))
  			env_set("fastboot_dev", boot_dev_part);
  		sprintf(boot_dev_part, "boota mmc%d", dev_no);
  		if (!env_get("bootcmd"))
  			env_set("bootcmd", boot_dev_part);
  		break;

  	case USB_BOOT:
  		printf("Detect USB boot. Will enter fastboot mode!
  ");
  		if (!env_get("bootcmd"))
  			env_set("bootcmd", "fastboot 0");

  		break;

  #endif /*CONFIG_FASTBOOT_STORAGE_MMC*/
  	default:

  		if (!env_get("bootcmd"))
  			printf("unsupported boot devices
  ");

  		break;
  	}
  
  	/* add soc type into bootargs */
  	if (is_mx6dqp()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx6qp");
  	} else if (is_mx6dq()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx6q");
  	} else if (is_mx6sdl()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx6dl");
  	} else if (is_mx6sx()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx6sx");
  	} else if (is_mx6sl()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx6sl");
  	} else if (is_mx6ul()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx6ul");
  	} else if (is_mx7()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx7d");
  	} else if (is_mx7ulp()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx7ulp");
  	} else if (is_imx8qm()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx8qm");
  	} else if (is_imx8qxp()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx8qxp");
  	} else if (is_imx8mq()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx8mq");
  	} else if (is_imx8mm()) {
  		if (!env_get("soc_type"))
  			env_set("soc_type", "imx8mm");
  	}
  }
  
  #ifdef CONFIG_ANDROID_RECOVERY
  void board_recovery_setup(void)
  {
  /* boot from current mmc with avb verify */
  #ifdef CONFIG_AVB_SUPPORT
  	if (!env_get("bootcmd_android_recovery"))
  		env_set("bootcmd_android_recovery", "boota recovery");
  #else
  #if defined(CONFIG_FASTBOOT_STORAGE_MMC)
  	static char boot_dev_part[32];
  	u32 dev_no;
  #endif
  	int bootdev = get_boot_device();
  	switch (bootdev) {
  #if defined(CONFIG_FASTBOOT_STORAGE_MMC)
  	case SD1_BOOT:
  	case SD2_BOOT:
  	case SD3_BOOT:
  	case SD4_BOOT:
  	case MMC1_BOOT:
  	case MMC2_BOOT:
  	case MMC3_BOOT:
  	case MMC4_BOOT:
  		dev_no = mmc_get_env_dev();
  		sprintf(boot_dev_part,"boota mmc%d recovery",dev_no);
  		if (!env_get("bootcmd_android_recovery"))
  			env_set("bootcmd_android_recovery", boot_dev_part);
  		break;
  #endif /*CONFIG_FASTBOOT_STORAGE_MMC*/
  	default:
  		printf("Unsupported bootup device for recovery: dev: %d
  ",
  			bootdev);
  		return;
  	}
  #endif /* CONFIG_AVB_SUPPORT */
  	printf("setup env for recovery..
  ");

  	env_set("bootcmd", env_get("bootcmd_android_recovery"));

  }
  #endif /*CONFIG_ANDROID_RECOVERY*/
  #endif /*CONFIG_FSL_FASTBOOT*/
  
  #if defined(CONFIG_AVB_SUPPORT) && defined(CONFIG_MMC)
  static AvbABOps fsl_avb_ab_ops = {
  	.read_ab_metadata = fsl_read_ab_metadata,
  	.write_ab_metadata = fsl_write_ab_metadata,
  	.ops = NULL
  };
  #ifdef CONFIG_AVB_ATX
  static AvbAtxOps fsl_avb_atx_ops = {
  	.ops = NULL,
  	.read_permanent_attributes = fsl_read_permanent_attributes,

  	.read_permanent_attributes_hash = fsl_read_permanent_attributes_hash,

  #ifdef CONFIG_IMX_TRUSTY_OS

  	.set_key_version = fsl_write_rollback_index_rpmb,

  #else

  	.set_key_version = fsl_set_key_version,

  #endif

  	.get_random = fsl_get_random

  };
  #endif
  static AvbOps fsl_avb_ops = {
  	.ab_ops = &fsl_avb_ab_ops,
  #ifdef CONFIG_AVB_ATX
  	.atx_ops = &fsl_avb_atx_ops,
  #endif
  	.read_from_partition = fsl_read_from_partition_multi,
  	.write_to_partition = fsl_write_to_partition,
  #ifdef CONFIG_AVB_ATX
  	.validate_vbmeta_public_key = avb_atx_validate_vbmeta_public_key,
  #else
  	.validate_vbmeta_public_key = fsl_validate_vbmeta_public_key_rpmb,
  #endif
  	.read_rollback_index = fsl_read_rollback_index_rpmb,
  	.write_rollback_index = fsl_write_rollback_index_rpmb,
  	.read_is_device_unlocked = fsl_read_is_device_unlocked,
  	.get_unique_guid_for_partition = fsl_get_unique_guid_for_partition,
  	.get_size_of_partition = fsl_get_size_of_partition
  };
  #endif

  #ifdef CONFIG_IMX_TRUSTY_OS

  #ifdef CONFIG_ARM64
  void tee_setup(void)
  {
  	trusty_ipc_init();
  }
  
  #else
  extern bool tos_flashed;

  void tee_setup(void)
  {
  	/* load tee from boot1 of eMMC. */
  	int mmcc = mmc_get_env_dev();
  	struct blk_desc *dev_desc = NULL;
  
  	struct mmc *mmc;
  	mmc = find_mmc_device(mmcc);
  	if (!mmc) {
  	            printf("boota: cannot find '%d' mmc device
  ", mmcc);
  		            goto fail;
  	}
  
  	dev_desc = blk_get_dev("mmc", mmcc);
  	if (NULL == dev_desc) {
  	            printf("** Block device MMC %d not supported
  ", mmcc);
  		            goto fail;
  	}
  
  	/* below was i.MX mmc operation code */
  	if (mmc_init(mmc)) {
  	            printf("mmc%d init failed
  ", mmcc);
  		            goto fail;
  	}
  
  	struct fastboot_ptentry *tee_pte;
  	char *tee_ptn = FASTBOOT_PARTITION_TEE;
  	tee_pte = fastboot_flash_find_ptn(tee_ptn);
  	mmc_switch_part(mmc, TEE_HWPARTITION_ID);
  	if (!tee_pte) {
  		printf("boota: cannot find tee partition!
  ");

  		fastboot_flash_dump_ptn();

  	}
  
  	if (blk_dread(dev_desc, tee_pte->start,
  		    tee_pte->length, (void *)TRUSTY_OS_ENTRY) < 0) {
  		printf("Failed to load tee.");
  	}
  	mmc_switch_part(mmc, FASTBOOT_MMC_USER_PARTITION_ID);

  	tos_flashed = false;
  	if(!valid_tos()) {
  		printf("TOS not flashed! Will enter TOS recovery mode. Everything will be wiped!
  ");
  		fastboot_wipe_all();
  		run_command("fastboot 0", 0);
  		goto fail;
  	}

  #ifdef NON_SECURE_FASTBOOT
  	armv7_init_nonsec();
  	trusty_os_init();
  	trusty_ipc_init();
  #endif
  
  fail:
  	return;
  
  }

  #endif /* CONFIG_ARM64 */
  #endif /* CONFIG_IMX_TRUSTY_OS */

  void fastboot_setup(void)
  {

  	int sw, ret;

  #ifdef CONFIG_USB_GADGET
  	struct tag_serialnr serialnr;
  	char serial[17];
  
  	get_board_serial(&serialnr);
  	sprintf(serial, "%08x%08x", serialnr.high, serialnr.low);
  	g_dnl_set_serialnumber(serial);
  #endif
  	/*execute board relevant initilizations for preparing fastboot */
  	board_fastboot_setup();
  
  	/*get the fastboot dev*/

  	ret = _fastboot_setup_dev(&sw);

  
  	/*load partitions information for the fastboot dev*/

  	if (!ret && sw)
  		_fastboot_load_partitions();

  
  	parameters_setup();
  #ifdef CONFIG_AVB_SUPPORT
  	fsl_avb_ab_ops.ops = &fsl_avb_ops;
  #ifdef CONFIG_AVB_ATX
  	fsl_avb_atx_ops.ops = &fsl_avb_ops;
  #endif
  #endif
  }
  
  /* Write the bcb with fastboot bootloader commands */
  static void enable_fastboot_command(void)
  {

  #ifdef CONFIG_BCB_SUPPORT

  	char fastboot_command[32] = {0};
  	strncpy(fastboot_command, FASTBOOT_BCB_CMD, 31);
  	bcb_write_command(fastboot_command);

  #endif

  }
  
  /* Get the Boot mode from BCB cmd or Key pressed */
  static FbBootMode fastboot_get_bootmode(void)
  {

  	int boot_mode = BOOTMODE_NORMAL;

  #ifdef CONFIG_ANDROID_RECOVERY
  	if(is_recovery_key_pressing()) {
  		boot_mode = BOOTMODE_RECOVERY_KEY_PRESSED;
  		return boot_mode;
  	}
  #endif

  #ifdef CONFIG_BCB_SUPPORT
  	int ret = 0;
  	char command[32];

  	ret = bcb_read_command(command);
  	if (ret < 0) {
  		printf("read command failed
  ");
  		return boot_mode;
  	}
  	if (!strcmp(command, FASTBOOT_BCB_CMD)) {
  		boot_mode = BOOTMODE_FASTBOOT_BCB_CMD;
  	}
  #ifdef CONFIG_ANDROID_RECOVERY
  	else if (!strcmp(command, RECOVERY_BCB_CMD)) {
  		boot_mode = BOOTMODE_RECOVERY_BCB_CMD;
  	}
  #endif
  
  	/* Clean the mode once its read out,
  	   no matter what in the mode string */
  	memset(command, 0, 32);
  	bcb_write_command(command);

  #endif

  	return boot_mode;
  }
  
  #ifdef CONFIG_SYSTEM_RAMDISK_SUPPORT
  /* Setup booargs for taking the system parition as ramdisk */
  static void fastboot_setup_system_boot_args(const char *slot, bool append_root)
  {
  	const char *system_part_name = NULL;
  	if(slot == NULL)
  		return;
  	if(!strncmp(slot, "_a", strlen("_a")) || !strncmp(slot, "boot_a", strlen("boot_a"))) {
  		system_part_name = FASTBOOT_PARTITION_SYSTEM_A;
  	}
  	else if(!strncmp(slot, "_b", strlen("_b")) || !strncmp(slot, "boot_b", strlen("boot_b"))) {
  		system_part_name = FASTBOOT_PARTITION_SYSTEM_B;
  	} else {
  		printf("slot invalid!
  ");
  		return;
  	}
  	struct fastboot_ptentry *ptentry = fastboot_flash_find_ptn(system_part_name);
  	if(ptentry != NULL) {
  		char bootargs_3rd[ANDR_BOOT_ARGS_SIZE];
  #if defined(CONFIG_FASTBOOT_STORAGE_MMC)
  		if (append_root) {
  			u32 dev_no = mmc_map_to_kernel_blk(mmc_get_env_dev());
  			sprintf(bootargs_3rd, "skip_initramfs root=/dev/mmcblk%dp%d",
  					dev_no,
  					ptentry->partition_index);
  		} else {
  			sprintf(bootargs_3rd, "skip_initramfs");
  		}
  		strcat(bootargs_3rd, " rootwait");
  		env_set("bootargs_3rd", bootargs_3rd);
  #endif

  	} else {
  		printf("Can't find partition: %s
  ", system_part_name);
  		fastboot_flash_dump_ptn();

  	}
  }
  #endif
  /* export to lib_arm/board.c */
  void fastboot_run_bootmode(void)
  {
  	FbBootMode boot_mode = fastboot_get_bootmode();
  	switch(boot_mode){
  	case BOOTMODE_FASTBOOT_BCB_CMD:
  		/* Make the boot into fastboot mode*/
  		puts("Fastboot: Got bootloader commands!
  ");
  		run_command("fastboot 0", 0);
  		break;
  #ifdef CONFIG_ANDROID_RECOVERY
  	case BOOTMODE_RECOVERY_BCB_CMD:
  	case BOOTMODE_RECOVERY_KEY_PRESSED:
  		/* Make the boot into recovery mode */
  		puts("Fastboot: Got Recovery key pressing or recovery commands!
  ");
  		board_recovery_setup();
  		break;
  #endif
  	default:
  		/* skip special mode boot*/
  		puts("Fastboot: Normal
  ");
  		break;
  	}
  }
  
  #ifdef CONFIG_CMD_BOOTA
    /* Section for Android bootimage format support
     * Refer:
     * http://android.git.kernel.org/?p=platform/system/core.git;a=blob;
     * f=mkbootimg/bootimg.h
     */
  
  void
  bootimg_print_image_hdr(struct andr_img_hdr *hdr)
  {
  #ifdef DEBUG
  	int i;
  	printf("   Image magic:   %s
  ", hdr->magic);
  
  	printf("   kernel_size:   0x%x
  ", hdr->kernel_size);
  	printf("   kernel_addr:   0x%x
  ", hdr->kernel_addr);
  
  	printf("   rdisk_size:   0x%x
  ", hdr->ramdisk_size);
  	printf("   rdisk_addr:   0x%x
  ", hdr->ramdisk_addr);
  
  	printf("   second_size:   0x%x
  ", hdr->second_size);
  	printf("   second_addr:   0x%x
  ", hdr->second_addr);
  
  	printf("   tags_addr:   0x%x
  ", hdr->tags_addr);
  	printf("   page_size:   0x%x
  ", hdr->page_size);
  
  	printf("   name:      %s
  ", hdr->name);
  	printf("   cmdline:   %s
  ", hdr->cmdline);
  
  	for (i = 0; i < 8; i++)
  		printf("   id[%d]:   0x%x
  ", i, hdr->id[i]);
  #endif
  }

  #if !defined(CONFIG_AVB_SUPPORT) || !defined(CONFIG_MMC)

  static struct andr_img_hdr boothdr __aligned(ARCH_DMA_MINALIGN);

  #endif

  #ifdef CONFIG_IMX_TRUSTY_OS

  #ifdef CONFIG_DUAL_BOOTLOADER
  static int sha256_concatenation(uint8_t *hash_buf, uint8_t *vbh, uint8_t *image_hash)
  {
  	if ((hash_buf == NULL) || (vbh == NULL) || (image_hash == NULL)) {
  		printf("sha256_concatenation: null buffer found!
  ");
  		return -1;
  	}
  
  	memcpy(hash_buf, vbh, AVB_SHA256_DIGEST_SIZE);
  	memcpy(hash_buf + AVB_SHA256_DIGEST_SIZE,
  	       image_hash, AVB_SHA256_DIGEST_SIZE);
  	sha256_csum_wd((unsigned char *)hash_buf, 2 * AVB_SHA256_DIGEST_SIZE,
  		       (unsigned char *)vbh, CHUNKSZ_SHA256);
  
  	return 0;
  }
  
  /* Since we use fit format to organize the atf, tee, u-boot and u-boot dtb,
   * so calculate the hash of fit is enough.
   */
  static int vbh_bootloader(uint8_t *image_hash)
  {
  	char* slot_suffixes[2] = {"_a", "_b"};
  	char partition_name[20];
  	AvbABData ab_data;
  	uint8_t *image_buf = NULL;
  	uint32_t image_size;
  	size_t image_num_read;
  	int target_slot;
  	int ret = 0;
  
  	/* Load A/B metadata and decide which slot we are going to load */
  	if (fsl_avb_ab_ops.read_ab_metadata(&fsl_avb_ab_ops, &ab_data) !=
  					    AVB_IO_RESULT_OK) {
  		ret = -1;
  		goto fail ;
  	}
  	target_slot = get_curr_slot(&ab_data);
  	sprintf(partition_name, "bootloader%s", slot_suffixes[target_slot]);
  
  	/* Read image header to find the image size */
  	image_buf = (uint8_t *)malloc(MMC_SATA_BLOCK_SIZE);
  	if (fsl_avb_ops.read_from_partition(&fsl_avb_ops, partition_name,
  					    0, MMC_SATA_BLOCK_SIZE,
  					    image_buf, &image_num_read)) {
  		printf("bootloader image load error!
  ");
  		ret = -1;
  		goto fail;
  	}
  	image_size = fdt_totalsize((struct image_header *)image_buf);
  	image_size = (image_size + 3) & ~3;
  	free(image_buf);
  
  	/* Load full fit image */
  	image_buf = (uint8_t *)malloc(image_size);
  	if (fsl_avb_ops.read_from_partition(&fsl_avb_ops, partition_name,
  					    0, image_size,
  					    image_buf, &image_num_read)) {
  		printf("bootloader image load error!
  ");
  		ret = -1;
  		goto fail;
  	}
  	/* Calculate hash */
  	sha256_csum_wd((unsigned char *)image_buf, image_size,
  		       (unsigned char *)image_hash, CHUNKSZ_SHA256);
  
  fail:
  	if (image_buf != NULL)
  		free(image_buf);
  	return ret;
  }
  
  int vbh_calculate(uint8_t *vbh, AvbSlotVerifyData *avb_out_data)
  {
  	uint8_t image_hash[AVB_SHA256_DIGEST_SIZE];
  	uint8_t hash_buf[2 * AVB_SHA256_DIGEST_SIZE];
  	uint8_t* image_buf = NULL;
  	uint32_t image_size;
  	size_t image_num_read;
  	int ret = 0;
  
  	if (vbh == NULL)
  		return -1;
  
  	/* Initial VBH (VBH0) should be 32 bytes 0 */
  	memset(vbh, 0, AVB_SHA256_DIGEST_SIZE);
  	/* Load and calculate the sha256 hash of spl.bin */
  	image_size = (ANDROID_SPL_SIZE + MMC_SATA_BLOCK_SIZE -1) /
  		      MMC_SATA_BLOCK_SIZE;
  	image_buf = (uint8_t *)malloc(image_size);
  	if (fsl_avb_ops.read_from_partition(&fsl_avb_ops,
  					    FASTBOOT_PARTITION_BOOTLOADER,
  					    0, image_size,
  					    image_buf, &image_num_read)) {
  		printf("spl image load error!
  ");
  		ret = -1;
  		goto fail;
  	}
  	sha256_csum_wd((unsigned char *)image_buf, image_size,
  		       (unsigned char *)image_hash, CHUNKSZ_SHA256);
  	/* Calculate VBH1 */
  	if (sha256_concatenation(hash_buf, vbh, image_hash)) {
  		ret = -1;
  		goto fail;
  	}
  	free(image_buf);
  
  	/* Load and calculate hash of bootloader.img */
  	if (vbh_bootloader(image_hash)) {
  		ret = -1;
  		goto fail;
  	}
  	/* Calculate VBH2 */
  	if (sha256_concatenation(hash_buf, vbh, image_hash)) {
  		ret = -1;
  		goto fail;
  	}
  
  	/* Calculate the hash of vbmeta.img */
  	avb_slot_verify_data_calculate_vbmeta_digest(avb_out_data,
  						     AVB_DIGEST_TYPE_SHA256,
  						     image_hash);
  	/* Calculate VBH3 */
  	if (sha256_concatenation(hash_buf, vbh, image_hash)) {
  		ret = -1;
  		goto fail;
  	}
  
  fail:
  	if (image_buf != NULL)
  		free(image_buf);
  	return ret;
  }
  
  #endif
  int trusty_setbootparameter(struct andr_img_hdr *hdr, AvbABFlowResult avb_result,
  			    AvbSlotVerifyData *avb_out_data) {
  #ifdef CONFIG_DUAL_BOOTLOADER
  	uint8_t vbh[AVB_SHA256_DIGEST_SIZE];
  #endif
  	int ret = 0;

  	u32 os_ver = hdr->os_version >> 11;
  	u32 os_ver_km = (((os_ver >> 14) & 0x7F) * 100 + ((os_ver >> 7) & 0x7F)) * 100
  	    + (os_ver & 0x7F);
  	u32 os_lvl = hdr->os_version & ((1U << 11) - 1);
  	u32 os_lvl_km = ((os_lvl >> 4) + 2000) * 100 + (os_lvl & 0x0F);
  	keymaster_verified_boot_t vbstatus;
  	FbLockState lock_status = fastboot_get_lock_stat();
  
  	uint8_t permanent_attributes_hash[AVB_SHA256_DIGEST_SIZE];

  #ifdef CONFIG_AVB_ATX

  	if (fsl_read_permanent_attributes_hash(&fsl_avb_atx_ops, permanent_attributes_hash)) {
  		printf("ERROR - failed to read permanent attributes hash for keymaster
  ");
  		memset(permanent_attributes_hash, 0, AVB_SHA256_DIGEST_SIZE);
  	}

  #endif

  
  	bool lock = (lock_status == FASTBOOT_LOCK)? true: false;
  	if (avb_result == AVB_AB_FLOW_RESULT_OK)
  		vbstatus = KM_VERIFIED_BOOT_VERIFIED;
  	else
  		vbstatus = KM_VERIFIED_BOOT_FAILED;

  	/* Calculate VBH */
  #ifdef CONFIG_DUAL_BOOTLOADER
  	if (vbh_calculate(vbh, avb_out_data)) {
  		ret = -1;
  		goto fail;
  	}
  
  	trusty_set_boot_params(os_ver_km, os_lvl_km, vbstatus, lock,
  			       permanent_attributes_hash, AVB_SHA256_DIGEST_SIZE,
  			       vbh, AVB_SHA256_DIGEST_SIZE);
  #else

  	trusty_set_boot_params(os_ver_km, os_lvl_km, vbstatus, lock,

  			       permanent_attributes_hash, AVB_SHA256_DIGEST_SIZE,
  			       NULL, 0);
  #endif
  
  fail:
  	return ret;

  }
  #endif

  #if defined(CONFIG_AVB_SUPPORT) && defined(CONFIG_MMC)

  /* we can use avb to verify Trusty if we want */
  const char *requested_partitions_boot[] = {"boot", FDT_PART_NAME, NULL};
  const char *requested_partitions_recovery[] = {"recovery", FDT_PART_NAME, NULL};

  static bool is_load_fdt_from_part(void)
  {

  #if defined(CONFIG_ANDROID_THINGS_SUPPORT)

  	if (fastboot_flash_find_ptn("oem_bootloader_a") &&
  		fastboot_flash_find_ptn("oem_bootloader_b")) {

  #elif defined(CONFIG_ANDROID_AB_SUPPORT)

  	if (fastboot_flash_find_ptn("dtbo_a") &&
  		fastboot_flash_find_ptn("dtbo_b")) {

  #else
  	/* for legacy platfrom (imx6/7), we don't support A/B slot. */
  	if (fastboot_flash_find_ptn("dtbo")) {

  #endif
  		return true;
  	} else {
  		return false;
  	}
  }

  static int find_partition_data_by_name(char* part_name,
  		AvbSlotVerifyData* avb_out_data, AvbPartitionData** avb_loadpart)
  {
  	int num = 0;
  	AvbPartitionData* loadpart = NULL;
  
  	for (num = 0; num < avb_out_data->num_loaded_partitions; num++) {
  		loadpart = &(avb_out_data->loaded_partitions[num]);
  		if (!(strncmp(loadpart->partition_name,
  			part_name, strlen(part_name)))) {
  			*avb_loadpart = loadpart;
  			break;
  		}
  	}
  	if (num == avb_out_data->num_loaded_partitions) {
  		printf("Error! Can't find %s partition from avb partition data!
  ",
  				part_name);
  		return -1;
  	}
  	else
  		return 0;
  }

  
  int do_boota(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) {
  
  	ulong addr = 0;
  	struct andr_img_hdr *hdr = NULL;
  	void *boot_buf = NULL;
  	ulong image_size;
  	u32 avb_metric;
  	bool check_image_arm64 =  false;
  	bool is_recovery_mode = false;

  	AvbABFlowResult avb_result;

  	AvbSlotVerifyData *avb_out_data = NULL;
  	AvbPartitionData *avb_loadpart = NULL;

  
  	/* get bootmode, default to boot "boot" */
  	if (argc > 1) {
  		is_recovery_mode =
  			(strncmp(argv[1], "recovery", sizeof("recovery")) != 0) ? false: true;

  		if (is_recovery_mode)
  			printf("Will boot from recovery!
  ");

  	}

  	/* check lock state */
  	FbLockState lock_status = fastboot_get_lock_stat();
  	if (lock_status == FASTBOOT_LOCK_ERROR) {

  #ifdef CONFIG_AVB_ATX
  		printf("In boota get fastboot lock status error, enter fastboot mode.
  ");
  		goto fail;
  #else

  		printf("In boota get fastboot lock status error. Set lock status
  ");
  		fastboot_set_lock_stat(FASTBOOT_LOCK);
  		lock_status = FASTBOOT_LOCK;

  #endif

  	}
  	bool allow_fail = (lock_status == FASTBOOT_UNLOCK ? true : false);
  	avb_metric = get_timer(0);

  	/* we don't need to verify fdt partition if we don't have it. */
  	if (!is_load_fdt_from_part()) {
  		requested_partitions_boot[1] = NULL;
  		requested_partitions_recovery[1] = NULL;
  	}

  #ifndef CONFIG_ANDROID_AB_SUPPORT
  	else if (is_recovery_mode){
  		requested_partitions_recovery[1] = NULL;
  	}
  #endif

  	/* if in lock state, do avb verify */
  #ifndef CONFIG_DUAL_BOOTLOADER

  	/* For imx6 on Android, we don't have a/b slot and we want to verify
  	 * boot/recovery with AVB. For imx8 and Android Things we don't have
  	 * recovery and support a/b slot for boot */
  #ifdef CONFIG_ANDROID_AB_SUPPORT
  	/* we can use avb to verify Trusty if we want */

  	avb_result = avb_ab_flow_fast(&fsl_avb_ab_ops, requested_partitions_boot, allow_fail,

  			AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE, &avb_out_data);

  #else

  	if (!is_recovery_mode) {

  		avb_result = avb_single_flow(&fsl_avb_ab_ops, requested_partitions_boot, allow_fail,

  				AVB_HASHTREE_ERROR_MODE_RESTART, &avb_out_data);
  	} else {

  		avb_result = avb_single_flow(&fsl_avb_ab_ops, requested_partitions_recovery, allow_fail,

  				AVB_HASHTREE_ERROR_MODE_RESTART, &avb_out_data);
  	}

  #endif
  #else /* !CONFIG_DUAL_BOOTLOADER */
  	/* We will only verify single one slot which has been selected in SPL */

  	avb_result = avb_flow_dual_uboot(&fsl_avb_ab_ops, requested_partitions_boot, allow_fail,

  			AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE, &avb_out_data);
  
  	/* Goto fail early if current slot is not bootable. */
  	if (avb_result == AVB_AB_FLOW_RESULT_ERROR_NO_BOOTABLE_SLOTS) {
  		printf("boota: slot verify fail!
  ");
  		goto fail;
  	}
  #endif /* !CONFIG_DUAL_BOOTLOADER */

  	/* get the duration of avb */
  	metrics.avb = get_timer(avb_metric);
  
  	if ((avb_result == AVB_AB_FLOW_RESULT_OK) ||
  			(avb_result == AVB_AB_FLOW_RESULT_OK_WITH_VERIFICATION_ERROR)) {
  		assert(avb_out_data != NULL);

  		/* We may have more than one partition loaded by AVB, find the boot
  		 * partition first.
  		 */
  #ifdef CONFIG_ANDROID_AB_SUPPORT
  		if (find_partition_data_by_name("boot", avb_out_data, &avb_loadpart))
  			goto fail;
  #else
  		if (!is_recovery_mode) {
  			if (find_partition_data_by_name("boot", avb_out_data, &avb_loadpart))
  				goto fail;
  		} else {
  			if (find_partition_data_by_name("recovery", avb_out_data, &avb_loadpart))
  				goto fail;
  		}
  #endif

  		assert(avb_loadpart != NULL);
  		/* we should use avb_part_data->data as boot image */
  		/* boot image is already read by avb */
  		hdr = (struct andr_img_hdr *)avb_loadpart->data;
  		if (android_image_check_header(hdr)) {
  			printf("boota: bad boot image magic
  ");
  			goto fail;
  		}
  		if (avb_result == AVB_AB_FLOW_RESULT_OK)
  			printf(" verify OK, boot '%s%s'
  ",
  					avb_loadpart->partition_name, avb_out_data->ab_suffix);
  		else {
  			printf(" verify FAIL, state: UNLOCK
  ");
  			printf(" boot '%s%s' still
  ",
  					avb_loadpart->partition_name, avb_out_data->ab_suffix);
  		}

  		char bootargs_sec[ANDR_BOOT_EXTRA_ARGS_SIZE];

  		if (lock_status == FASTBOOT_LOCK) {

  			snprintf(bootargs_sec, sizeof(bootargs_sec),

  					"androidboot.verifiedbootstate=green androidboot.slot_suffix=%s %s",
  					avb_out_data->ab_suffix, avb_out_data->cmdline);
  		} else {

  			snprintf(bootargs_sec, sizeof(bootargs_sec),

  					"androidboot.verifiedbootstate=orange androidboot.slot_suffix=%s %s",
  					avb_out_data->ab_suffix, avb_out_data->cmdline);
  		}
  		env_set("bootargs_sec", bootargs_sec);
  #ifdef CONFIG_SYSTEM_RAMDISK_SUPPORT
  		if(!is_recovery_mode) {
  			if(avb_out_data->cmdline != NULL && strstr(avb_out_data->cmdline, "root="))
  				fastboot_setup_system_boot_args(avb_out_data->ab_suffix, false);
  			else
  				fastboot_setup_system_boot_args(avb_out_data->ab_suffix, true);
  		}
  #endif /* CONFIG_SYSTEM_RAMDISK_SUPPORT */
  		image_size = avb_loadpart->data_size;
  #if defined (CONFIG_ARCH_IMX8) || defined (CONFIG_ARCH_IMX8M)
  		/* If we are using uncompressed kernel image, copy it directly to
  		 * hdr->kernel_addr, if we are using compressed lz4 kernel image,
  		 * we need to decompress the kernel image first. */
  		if (image_arm64((void *)((ulong)hdr + hdr->page_size))) {
  			memcpy((void *)(long)hdr->kernel_addr,
  					(void *)((ulong)hdr + hdr->page_size), hdr->kernel_size);
  		} else {
  #ifdef CONFIG_LZ4

  			size_t lz4_len = DST_DECOMPRESS_LEN;

  			if (ulz4fn((void *)((ulong)hdr + hdr->page_size),
  						hdr->kernel_size, (void *)(ulong)hdr->kernel_addr, &lz4_len) != 0) {
  				printf("Decompress kernel fail!
  ");
  				goto fail;
  			}
  #else /* CONFIG_LZ4 */
  			printf("please enable CONFIG_LZ4 if we're using compressed lz4 kernel image!
  ");
  			goto fail;
  #endif /* CONFIG_LZ4 */
  		}
  #else /* CONFIG_ARCH_IMX8 || CONFIG_ARCH_IMX8M */
  		/* copy kernel image and boot header to hdr->kernel_addr - hdr->page_size */
  		memcpy((void *)(ulong)(hdr->kernel_addr - hdr->page_size), (void *)hdr,
  				hdr->page_size + ALIGN(hdr->kernel_size, hdr->page_size));
  #endif /* CONFIG_ARCH_IMX8 || CONFIG_ARCH_IMX8M */

  	} else {
  		/* Fall into fastboot mode if get unacceptable error from avb
  		 * or verify fail in lock state.
  		 */
  		if (lock_status == FASTBOOT_LOCK)
  			printf(" verify FAIL, state: LOCK
  ");

  		goto fail;

  	}

  
  	flush_cache((ulong)load_addr, image_size);
  	check_image_arm64  = image_arm64((void *)(ulong)hdr->kernel_addr);
  #ifdef CONFIG_SYSTEM_RAMDISK_SUPPORT
  	if (is_recovery_mode)
  		memcpy((void *)(ulong)hdr->ramdisk_addr, (void *)(ulong)hdr + hdr->page_size
  				+ ALIGN(hdr->kernel_size, hdr->page_size), hdr->ramdisk_size);
  #else
  	memcpy((void *)(ulong)hdr->ramdisk_addr, (void *)(ulong)hdr + hdr->page_size
  			+ ALIGN(hdr->kernel_size, hdr->page_size), hdr->ramdisk_size);
  #endif
  #ifdef CONFIG_OF_LIBFDT

  	/* load the dtb file */

  	u32 fdt_size = 0;
  	struct dt_table_header *dt_img = NULL;

  	if (is_load_fdt_from_part()) {

  #ifdef CONFIG_ANDROID_THINGS_SUPPORT

  		if (find_partition_data_by_name("oem_bootloader",
  					avb_out_data, &avb_loadpart)) {
  			goto fail;

  		} else
  			dt_img = (struct dt_table_header *)avb_loadpart->data;
  #elif defined(CONFIG_ANDROID_AB_SUPPORT)

  		if (find_partition_data_by_name("dtbo",
  					avb_out_data, &avb_loadpart)) {
  			goto fail;

  		} else
  			dt_img = (struct dt_table_header *)avb_loadpart->data;
  #else
  		if (is_recovery_mode) {
  			if (hdr->header_version != 1) {
  				printf("boota: boot image header version error!
  ");
  				goto fail;
  			}
  
  			dt_img = (struct dt_table_header *)((void *)(ulong)hdr +
  						hdr->page_size +
  						ALIGN(hdr->kernel_size, hdr->page_size) +
  						ALIGN(hdr->ramdisk_size, hdr->page_size) +
  						ALIGN(hdr->second_size, hdr->page_size));
  		} else if (find_partition_data_by_name("dtbo",
  						avb_out_data, &avb_loadpart)) {
  			goto fail;
  		} else
  			dt_img = (struct dt_table_header *)avb_loadpart->data;

  #endif

  		if (be32_to_cpu(dt_img->magic) != DT_TABLE_MAGIC) {
  			printf("boota: bad dt table magic %08x
  ",
  					be32_to_cpu(dt_img->magic));
  			goto fail;
  		} else if (!be32_to_cpu(dt_img->dt_entry_count)) {
  			printf("boota: no dt entries
  ");
  			goto fail;
  		}

  		struct dt_table_entry *dt_entry;
  		dt_entry = (struct dt_table_entry *)((ulong)dt_img +
  				be32_to_cpu(dt_img->dt_entries_offset));
  		fdt_size = be32_to_cpu(dt_entry->dt_size);
  		memcpy((void *)(ulong)hdr->second_addr, (void *)((ulong)dt_img +
  				be32_to_cpu(dt_entry->dt_offset)), fdt_size);
  	} else {
  		if (hdr->second_size && hdr->second_addr) {
  			memcpy((void *)(ulong)hdr->second_addr,
  				(void *)(ulong)hdr + hdr->page_size
  				+ ALIGN(hdr->kernel_size, hdr->page_size)
  				+ ALIGN(hdr->ramdisk_size, hdr->page_size),
  				hdr->second_size);
  		}

  	}

  #endif /*CONFIG_OF_LIBFDT*/

  	if (check_image_arm64) {
  		android_image_get_kernel(hdr, 0, NULL, NULL);
  		addr = hdr->kernel_addr;
  	} else {
  		addr = (ulong)(hdr->kernel_addr - hdr->page_size);
  	}
  	printf("kernel   @ %08x (%d)
  ", hdr->kernel_addr, hdr->kernel_size);
  	printf("ramdisk  @ %08x (%d)
  ", hdr->ramdisk_addr, hdr->ramdisk_size);
  #ifdef CONFIG_OF_LIBFDT

  	if (is_load_fdt_from_part()) {
  		if (fdt_size)
  			printf("fdt      @ %08x (%d)
  ", hdr->second_addr, fdt_size);
  	} else {
  		if (hdr->second_size)
  			printf("fdt      @ %08x (%d)
  ", hdr->second_addr, hdr->second_size);
  	}

  #endif /*CONFIG_OF_LIBFDT*/
  
  	char boot_addr_start[12];
  	char ramdisk_addr[25];
  	char fdt_addr[12];
  
  	char *boot_args[] = { NULL, boot_addr_start, ramdisk_addr, fdt_addr};
  	if (check_image_arm64)
  		boot_args[0] = "booti";
  	else
  		boot_args[0] = "bootm";
  
  	sprintf(boot_addr_start, "0x%lx", addr);
  	sprintf(ramdisk_addr, "0x%x:0x%x", hdr->ramdisk_addr, hdr->ramdisk_size);
  	sprintf(fdt_addr, "0x%x", hdr->second_addr);
  
  /* no need to pass ramdisk addr for normal boot mode when enable CONFIG_SYSTEM_RAMDISK_SUPPORT*/
  #ifdef CONFIG_SYSTEM_RAMDISK_SUPPORT
  	if (!is_recovery_mode)
  		boot_args[2] = NULL;
  #endif

  #ifdef CONFIG_IMX_TRUSTY_OS

  	/* Trusty keymaster needs some parameters before it work */

  	if (trusty_setbootparameter(hdr, avb_result, avb_out_data))
  		goto fail;

  	/* lock the boot status and rollback_idx preventing Linux modify it */
  	trusty_lock_boot_state();

  	/* put ql-tipc to release resource for Linux */
  	trusty_ipc_shutdown();
  #endif

  
  	if (avb_out_data != NULL)
  		avb_slot_verify_data_free(avb_out_data);
  	if (boot_buf != NULL)
  		free(boot_buf);

  	if (check_image_arm64) {
  #ifdef CONFIG_CMD_BOOTI
  		do_booti(NULL, 0, 4, boot_args);
  #else
  		debug("please enable CONFIG_CMD_BOOTI when kernel are Image");
  #endif
  	} else {
  		do_bootm(NULL, 0, 4, boot_args);
  	}
  
  	/* This only happens if image is somehow faulty so we start over */
  	do_reset(NULL, 0, 0, NULL);
  
  	return 1;
  
  fail:
  	/* avb has no recovery */
  	if (avb_out_data != NULL)
  		avb_slot_verify_data_free(avb_out_data);

  
  	return run_command("fastboot 0", 0);
  }
  
  U_BOOT_CMD(
  	boota,	2,	1,	do_boota,
  	"boota   - boot android bootimg 
  ",
  	"boot from current mmc with avb verify
  "
  );
  #else /* CONFIG_AVB_SUPPORT */
  /* boota <addr> [ mmc0 | mmc1 [ <partition> ] ] */
  int do_boota(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  {
  	ulong addr = 0;
  	char *ptn = "boot";
  	int mmcc = -1;
  	struct andr_img_hdr *hdr = &boothdr;
  	ulong image_size;
  	bool check_image_arm64 =  false;
  	int i = 0;
  
  	for (i = 0; i < argc; i++)
  		printf("%s ", argv[i]);
  	printf("
  ");
  
  	if (argc < 2)
  		return -1;
  
  	mmcc = simple_strtoul(argv[1]+3, NULL, 10);
  
  	if (argc > 2)
  		ptn = argv[2];
  
  	if (mmcc != -1) {
  #ifdef CONFIG_MMC
  		struct fastboot_ptentry *pte;
  		struct mmc *mmc;
  		disk_partition_t info;
  		struct blk_desc *dev_desc = NULL;
  		unsigned bootimg_sectors;
  
  		memset((void *)&info, 0 , sizeof(disk_partition_t));
  		/* i.MX use MBR as partition table, so this will have
  		   to find the start block and length for the
  		   partition name and register the fastboot pte we
  		   define the partition number of each partition in
  		   config file
  		 */
  		mmc = find_mmc_device(mmcc);
  		if (!mmc) {
  			printf("boota: cannot find '%d' mmc device
  ", mmcc);
  			goto fail;
  		}
  		dev_desc = blk_get_dev("mmc", mmcc);
  		if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
  			printf("** Block device MMC %d not supported
  ", mmcc);
  			goto fail;
  		}
  
  		/* below was i.MX mmc operation code */
  		if (mmc_init(mmc)) {
  			printf("mmc%d init failed
  ", mmcc);
  			goto fail;
  		}
  
  		pte = fastboot_flash_find_ptn(ptn);
  		if (!pte) {
  			printf("boota: cannot find '%s' partition
  ", ptn);

  			fastboot_flash_dump_ptn();

  			goto fail;
  		}
  
  		if (blk_dread(dev_desc, pte->start,
  					      1, (void *)hdr) < 0) {
  			printf("boota: mmc failed to read bootimg header
  ");
  			goto fail;
  		}
  
  		if (android_image_check_header(hdr)) {
  			printf("boota: bad boot image magic
  ");
  			goto fail;
  		}
  
  		image_size = android_image_get_end(hdr) - (ulong)hdr;
  		bootimg_sectors = image_size/512;
  
  		if (blk_dread(dev_desc,	pte->start,
  					bootimg_sectors,
  					(void *)(hdr->kernel_addr - hdr->page_size)) < 0) {
  			printf("boota: mmc failed to read bootimage
  ");
  			goto fail;
  		}
  		check_image_arm64  = image_arm64((void *)hdr->kernel_addr);
  #ifdef CONFIG_FASTBOOT_LOCK
  		int verifyresult = -1;
  #endif
  
  #ifdef CONFIG_FASTBOOT_LOCK
  		int lock_status = fastboot_get_lock_stat();
  		if (lock_status == FASTBOOT_LOCK_ERROR) {
  			printf("In boota get fastboot lock status error. Set lock status
  ");
  			fastboot_set_lock_stat(FASTBOOT_LOCK);
  		}
  		display_lock(fastboot_get_lock_stat(), verifyresult);
  #endif
  		/* load the ramdisk file */
  		memcpy((void *)hdr->ramdisk_addr, (void *)hdr->kernel_addr
  			+ ALIGN(hdr->kernel_size, hdr->page_size), hdr->ramdisk_size);
  
  #ifdef CONFIG_OF_LIBFDT

  		u32 fdt_size = 0;

  		/* load the dtb file */

  		if (hdr->second_addr) {
  			u32 zimage_size = ((u32 *)hdrload->kernel_addr)[ZIMAGE_END_ADDR]
  					- ((u32 *)hdrload->kernel_addr)[ZIMAGE_START_ADDR];
  			fdt_size = hdrload->kernel_size - zimage_size;
  			memcpy((void *)(ulong)hdrload->second_addr,
  					(void*)(ulong)hdrload->kernel_addr + zimage_size, fdt_size);

  		}
  #endif /*CONFIG_OF_LIBFDT*/
  
  #else /*! CONFIG_MMC*/
  		return -1;
  #endif /*! CONFIG_MMC*/
  	} else {
  		printf("boota: parameters is invalid. only support mmcX device
  ");
  		return -1;
  	}
  
  	printf("kernel   @ %08x (%d)
  ", hdr->kernel_addr, hdr->kernel_size);
  	printf("ramdisk  @ %08x (%d)
  ", hdr->ramdisk_addr, hdr->ramdisk_size);
  #ifdef CONFIG_OF_LIBFDT

  	if (fdt_size)
  		printf("fdt      @ %08x (%d)
  ", hdr->second_addr, fdt_size);

  #endif /*CONFIG_OF_LIBFDT*/
  
  
  	char boot_addr_start[12];
  	char ramdisk_addr[25];
  	char fdt_addr[12];
  	char *boot_args[] = { NULL, boot_addr_start, ramdisk_addr, fdt_addr};
  	if (check_image_arm64 ) {
  		addr = hdr->kernel_addr;
  		boot_args[0] = "booti";
  	} else {
  		addr = hdr->kernel_addr - hdr->page_size;
  		boot_args[0] = "bootm";
  	}
  
  	sprintf(boot_addr_start, "0x%lx", addr);
  	sprintf(ramdisk_addr, "0x%x:0x%x", hdr->ramdisk_addr, hdr->ramdisk_size);
  	sprintf(fdt_addr, "0x%x", hdr->second_addr);
  	if (check_image_arm64) {
  		android_image_get_kernel(hdr, 0, NULL, NULL);
  #ifdef CONFIG_CMD_BOOTI
  		do_booti(NULL, 0, 4, boot_args);
  #else
  		debug("please enable CONFIG_CMD_BOOTI when kernel are Image");
  #endif
  	} else {
  		do_bootm(NULL, 0, 4, boot_args);
  	}
  	/* This only happens if image is somehow faulty so we start over */
  	do_reset(NULL, 0, 0, NULL);

  	return 1;

  fail:
  #if defined(CONFIG_FSL_FASTBOOT)
  	return run_command("fastboot 0", 0);
  #else /*! CONFIG_FSL_FASTBOOT*/
  	return -1;
  #endif /*! CONFIG_FSL_FASTBOOT*/
  }
  
  U_BOOT_CMD(
  	boota,	3,	1,	do_boota,
  	"boota   - boot android bootimg from memory
  ",
  	"[<addr> | mmc0 | mmc1 | mmc2 | mmcX] [<partition>]
      "
  	"- boot application image stored in memory or mmc
  "
  	"\t'addr' should be the address of boot image "
  	"which is zImage+ramdisk.img
  "
  	"\t'mmcX' is the mmc device you store your boot.img, "
  	"which will read the boot.img from 1M offset('/boot' partition)
  "
  	"\t 'partition' (optional) is the partition id of your device, "
  	"if no partition give, will going to 'boot' partition
  "
  );
  #endif /* CONFIG_AVB_SUPPORT */
  #endif	/* CONFIG_CMD_BOOTA */
  #endif

  
  void fastboot_fail(const char *reason)

  {

  	strncpy(fb_response_str, "FAIL\0", 5);
  	strncat(fb_response_str, reason, FASTBOOT_RESPONSE_LEN - 4 - 1);

  }

  void fastboot_okay(const char *reason)

  {

  	strncpy(fb_response_str, "OKAY\0", 5);
  	strncat(fb_response_str, reason, FASTBOOT_RESPONSE_LEN - 4 - 1);

  }

  static void fastboot_fifo_complete(struct usb_ep *ep, struct usb_request *req)
  {
  	int status = req->status;
  	usb_req *request;
  
  	if (!status) {
  		if (fastboot_func->front != NULL) {
  			request = fastboot_func->front;
  			fastboot_func->front = fastboot_func->front->next;
  			usb_ep_free_request(ep, request->in_req);
  			free(request);
  		} else {
  			printf("fail free request
  ");
  		}
  		return;
  	}
  }

  static void fastboot_complete(struct usb_ep *ep, struct usb_request *req)
  {
  	int status = req->status;
  	if (!status)
  		return;
  	printf("status: %d ep '%s' trans: %d
  ", status, ep->name, req->actual);
  }
  
  static int fastboot_bind(struct usb_configuration *c, struct usb_function *f)
  {
  	int id;
  	struct usb_gadget *gadget = c->cdev->gadget;
  	struct f_fastboot *f_fb = func_to_fastboot(f);

  	const char *s;

  
  	/* DYNAMIC interface numbers assignments */
  	id = usb_interface_id(c, f);
  	if (id < 0)
  		return id;
  	interface_desc.bInterfaceNumber = id;

  	/* Enable OS and Extended Properties Feature Descriptor */
  	c->cdev->use_os_string = 1;
  	f->os_desc_table = &fb_os_desc_table;
  	f->os_desc_n = 1;
  	f->os_desc_table->if_id = id;
  	INIT_LIST_HEAD(&fb_os_desc.ext_prop);
  	fb_ext_prop.name_len = strlen(fb_ext_prop.name) * 2 + 2;

  	fb_os_desc.ext_prop_len = 10 + fb_ext_prop.name_len;

  	fb_os_desc.ext_prop_count = 1;

  	fb_ext_prop.data_len = strlen(fb_ext_prop.data) * 2 + 2;
  	fb_os_desc.ext_prop_len += fb_ext_prop.data_len + 4;

  	list_add_tail(&fb_ext_prop.entry, &fb_os_desc.ext_prop);

  	id = usb_string_id(c->cdev);
  	if (id < 0)
  		return id;
  	fastboot_string_defs[0].id = id;
  	interface_desc.iInterface = id;
  
  	f_fb->in_ep = usb_ep_autoconfig(gadget, &fs_ep_in);
  	if (!f_fb->in_ep)
  		return -ENODEV;
  	f_fb->in_ep->driver_data = c->cdev;
  
  	f_fb->out_ep = usb_ep_autoconfig(gadget, &fs_ep_out);
  	if (!f_fb->out_ep)
  		return -ENODEV;
  	f_fb->out_ep->driver_data = c->cdev;

  	f->descriptors = fb_fs_function;
  
  	if (gadget_is_dualspeed(gadget)) {
  		/* Assume endpoint addresses are the same for both speeds */
  		hs_ep_in.bEndpointAddress = fs_ep_in.bEndpointAddress;
  		hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress;
  		/* copy HS descriptors */
  		f->hs_descriptors = fb_hs_function;
  	}

  	s = env_get("serial#");

  	if (s)
  		g_dnl_set_serialnumber((char *)s);

  	return 0;
  }
  
  static void fastboot_unbind(struct usb_configuration *c, struct usb_function *f)
  {

  	f->os_desc_table = NULL;
  	list_del(&fb_os_desc.ext_prop);

  	memset(fastboot_func, 0, sizeof(*fastboot_func));
  }
  
  static void fastboot_disable(struct usb_function *f)
  {

  	usb_req *req;

  	struct f_fastboot *f_fb = func_to_fastboot(f);
  
  	usb_ep_disable(f_fb->out_ep);
  	usb_ep_disable(f_fb->in_ep);
  
  	if (f_fb->out_req) {
  		free(f_fb->out_req->buf);
  		usb_ep_free_request(f_fb->out_ep, f_fb->out_req);
  		f_fb->out_req = NULL;
  	}
  	if (f_fb->in_req) {
  		free(f_fb->in_req->buf);
  		usb_ep_free_request(f_fb->in_ep, f_fb->in_req);

  
  		/* disable usb request FIFO */
  		while(f_fb->front != NULL) {
  			req = f_fb->front;
  			f_fb->front = f_fb->front->next;
  			free(req->in_req->buf);
  			usb_ep_free_request(f_fb->in_ep, req->in_req);
  			free(req);
  		}
  
  		f_fb->rear = NULL;

  		f_fb->in_req = NULL;
  	}
  }
  
  static struct usb_request *fastboot_start_ep(struct usb_ep *ep)
  {
  	struct usb_request *req;
  
  	req = usb_ep_alloc_request(ep, 0);
  	if (!req)
  		return NULL;
  
  	req->length = EP_BUFFER_SIZE;
  	req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, EP_BUFFER_SIZE);
  	if (!req->buf) {
  		usb_ep_free_request(ep, req);
  		return NULL;
  	}
  
  	memset(req->buf, 0, req->length);
  	return req;
  }
  
  static int fastboot_set_alt(struct usb_function *f,
  			    unsigned interface, unsigned alt)
  {
  	int ret;
  	struct usb_composite_dev *cdev = f->config->cdev;
  	struct usb_gadget *gadget = cdev->gadget;
  	struct f_fastboot *f_fb = func_to_fastboot(f);

  	const struct usb_endpoint_descriptor *d;

  
  	debug("%s: func: %s intf: %d alt: %d
  ",
  	      __func__, f->name, interface, alt);

  	d = fb_ep_desc(gadget, &fs_ep_out, &hs_ep_out);
  	ret = usb_ep_enable(f_fb->out_ep, d);

  	if (ret) {
  		puts("failed to enable out ep
  ");
  		return ret;
  	}
  
  	f_fb->out_req = fastboot_start_ep(f_fb->out_ep);
  	if (!f_fb->out_req) {
  		puts("failed to alloc out req
  ");
  		ret = -EINVAL;
  		goto err;
  	}
  	f_fb->out_req->complete = rx_handler_command;

  	d = fb_ep_desc(gadget, &fs_ep_in, &hs_ep_in);
  	ret = usb_ep_enable(f_fb->in_ep, d);

  	if (ret) {
  		puts("failed to enable in ep
  ");
  		goto err;
  	}
  
  	f_fb->in_req = fastboot_start_ep(f_fb->in_ep);
  	if (!f_fb->in_req) {
  		puts("failed alloc req in
  ");
  		ret = -EINVAL;
  		goto err;
  	}

  #ifdef CONFIG_ANDROID_THINGS_SUPPORT
  	/*
  	 * fastboot host end implement to get data in one bulk package so need
  	 * large buffer for the "fastboot upload" and "fastboot get_staged".
  	 */
  	if (f_fb->in_req->buf)
  		free(f_fb->in_req->buf);
  	f_fb->in_req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, EP_BUFFER_SIZE * 32);
  #endif

  	f_fb->in_req->complete = fastboot_complete;

  	f_fb->front = f_fb->rear = NULL;

  	ret = usb_ep_queue(f_fb->out_ep, f_fb->out_req, 0);
  	if (ret)
  		goto err;
  
  	return 0;
  err:
  	fastboot_disable(f);
  	return ret;
  }
  
  static int fastboot_add(struct usb_configuration *c)
  {
  	struct f_fastboot *f_fb = fastboot_func;
  	int status;
  
  	debug("%s: cdev: 0x%p
  ", __func__, c->cdev);
  
  	if (!f_fb) {
  		f_fb = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_fb));
  		if (!f_fb)
  			return -ENOMEM;
  
  		fastboot_func = f_fb;
  		memset(f_fb, 0, sizeof(*f_fb));
  	}
  
  	f_fb->usb_function.name = "f_fastboot";

  	f_fb->usb_function.bind = fastboot_bind;
  	f_fb->usb_function.unbind = fastboot_unbind;
  	f_fb->usb_function.set_alt = fastboot_set_alt;
  	f_fb->usb_function.disable = fastboot_disable;
  	f_fb->usb_function.strings = fastboot_strings;
  
  	status = usb_add_function(c, &f_fb->usb_function);
  	if (status) {
  		free(f_fb);

  		fastboot_func = NULL;

  	}
  
  	return status;
  }
  DECLARE_GADGET_BIND_CALLBACK(usb_dnl_fastboot, fastboot_add);

  static int fastboot_tx_write_more(const char *buffer)
  {
  	int ret = 0;
  
  	/* alloc usb request FIFO node */
  	usb_req *req = (usb_req *)malloc(sizeof(usb_req));
  	if (!req) {
  		printf("failed alloc usb req!
  ");
  		return -ENOMEM;
  	}
  
  	/* usb request node FIFO enquene */
  	if ((fastboot_func->front == NULL) && (fastboot_func->rear == NULL)) {
  		fastboot_func->front = fastboot_func->rear = req;
  		req->next = NULL;
  	} else {
  		fastboot_func->rear->next = req;
  		fastboot_func->rear = req;
  		req->next = NULL;
  	}
  
  	/* alloc in request for current node */
  	req->in_req = fastboot_start_ep(fastboot_func->in_ep);
  	if (!req->in_req) {
  		printf("failed alloc req in
  ");
  		fastboot_disable(&(fastboot_func->usb_function));
  		return  -EINVAL;
  	}
  	req->in_req->complete = fastboot_fifo_complete;
  
  	memcpy(req->in_req->buf, buffer, strlen(buffer));
  	req->in_req->length = strlen(buffer);
  
  	ret = usb_ep_queue(fastboot_func->in_ep, req->in_req, 0);
  	if (ret) {
  		printf("Error %d on queue
  ", ret);
  		return -EINVAL;
  	}
  
  	ret = 0;
  	return ret;
  }

  static int fastboot_tx_write(const char *buffer, unsigned int buffer_size)

  {
  	struct usb_request *in_req = fastboot_func->in_req;
  	int ret;
  
  	memcpy(in_req->buf, buffer, buffer_size);
  	in_req->length = buffer_size;

  	usb_ep_dequeue(fastboot_func->in_ep, in_req);
  
  	ret = usb_ep_queue(fastboot_func->in_ep, in_req, 0);
  	if (ret)
  		printf("Error %d on queue
  ", ret);
  	return 0;
  }
  
  static int fastboot_tx_write_str(const char *buffer)
  {
  	return fastboot_tx_write(buffer, strlen(buffer));
  }
  
  static void compl_do_reset(struct usb_ep *ep, struct usb_request *req)
  {
  	do_reset(NULL, 0, 0, NULL);
  }
  
  int __weak fb_set_reboot_flag(void)
  {
  	return -ENOSYS;
  }
  
  static void cb_reboot(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmd = req->buf;
  	if (!strcmp_l1("reboot-bootloader", cmd)) {
  		if (fb_set_reboot_flag()) {
  			fastboot_tx_write_str("FAILCannot set reboot flag");
  			return;
  		}
  	}
  	fastboot_func->in_req->complete = compl_do_reset;
  	fastboot_tx_write_str("OKAY");
  }
  
  static int strcmp_l1(const char *s1, const char *s2)
  {
  	if (!s1 || !s2)
  		return -1;
  	return strncmp(s1, s2, strlen(s1));
  }
  
  #ifdef CONFIG_FSL_FASTBOOT
  static bool is_slotvar(char *cmd)
  {
  	assert(cmd != NULL);
  	if (!strcmp_l1("has-slot:", cmd) ||
  		!strcmp_l1("slot-successful:", cmd) ||
  		!strcmp_l1("slot-count", cmd) ||
  		!strcmp_l1("slot-suffixes", cmd) ||
  		!strcmp_l1("current-slot", cmd) ||
  		!strcmp_l1("slot-unbootable:", cmd) ||
  		!strcmp_l1("slot-retry-count:", cmd))
  			return true;
  	return false;
  }
  
  static char *get_serial(void)
  {
  #ifdef CONFIG_SERIAL_TAG
  	struct tag_serialnr serialnr;
  	static char serial[32];
  	get_board_serial(&serialnr);
  	sprintf(serial, "%08x%08x", serialnr.high,      serialnr.low);
  	return serial;
  #else
  	return NULL;
  #endif
  }
  
  #if !defined(PRODUCT_NAME)
  #define PRODUCT_NAME "NXP i.MX"
  #endif
  
  #if !defined(VARIANT_NAME)
  #define VARIANT_NAME "NXP i.MX"
  #endif
  
  static int get_block_size(void) {

  	int dev_no = 0;

  	struct blk_desc *dev_desc;

  
  	dev_no = fastboot_devinfo.dev_id;
  	dev_desc = blk_get_dev(fastboot_devinfo.type == DEV_SATA ? "sata" : "mmc", dev_no);

  	if (NULL == dev_desc) {

  		printf("** Block device %s %d not supported
  ",
  		       fastboot_devinfo.type == DEV_SATA ? "sata" : "mmc",
  		       dev_no);

  		return 0;
  	}
  	return dev_desc->blksz;
  }
  
  static bool is_exist(char (*partition_base_name)[16], char *buffer, int count)
  {
  	int n;
  
  	for (n = 0; n < count; n++) {
  		if (!strcmp(partition_base_name[n],buffer))
  			return true;
  	}
  	return false;
  }
  /*get partition base name from gpt without "_a/_b"*/
  static int get_partition_base_name(char (*partition_base_name)[16])
  {
  	int n = 0;
  	int count = 0;
  	char *ptr1, *ptr2;

  	char buffer[20];

  
  	for (n = 0; n < g_pcount; n++) {
  		strcpy(buffer,g_ptable[n].name);
  		ptr1 = strstr(buffer, "_a");
  		ptr2 = strstr(buffer, "_b");
  		if (ptr1 != NULL) {
  			*ptr1 = '\0';
  			if (!is_exist(partition_base_name,buffer,count)) {
  				strcpy(partition_base_name[count++],buffer);
  			}
  		} else if (ptr2 != NULL) {
  			*ptr2 = '\0';
  			if (!is_exist(partition_base_name,buffer,count)) {
  				strcpy(partition_base_name[count++],buffer);
  			}
  		} else {
  			strcpy(partition_base_name[count++],buffer);
  		}
  	}
  	return count;
  }
  
  static bool is_slot(void)
  {
  	char slot_suffix[2][5] = {"_a","_b"};
  	int n;
  
  	for (n = 0; n < g_pcount; n++) {
  		if (strstr(g_ptable[n].name, slot_suffix[0]) ||
  		strstr(g_ptable[n].name, slot_suffix[1]))
  			return true;
  	}
  	return false;
  }

  #ifdef CONFIG_IMX_TRUSTY_OS
  static void uuid_hex2string(uint8_t *uuid, char* buf, uint32_t uuid_len, uint32_t uuid_strlen) {
  	uint32_t i;
  	if (!uuid || !buf)
  		return;
  	char *cp = buf;
  	char *buf_end = buf + uuid_strlen;
  	for (i = 0; i < uuid_len; i++) {
  		cp += snprintf(cp, buf_end - cp, "%02x", uuid[i]);
  	}
  }
  #endif

  #if defined(CONFIG_ANDROID_THINGS_SUPPORT) && defined(CONFIG_ARCH_IMX8M)

  int get_imx8m_baseboard_id(void);

  #endif

  static int get_single_var(char *cmd, char *response)
  {
  	char *str = cmd;

  	int chars_left;

  	const char *s;
  	struct mmc *mmc;
  	int mmc_dev_no;
  	int blksz;
  
  	chars_left = FASTBOOT_RESPONSE_LEN - strlen(response) - 1;
  
  	if ((str = strstr(cmd, "partition-size:"))) {
  		str +=strlen("partition-size:");
  		struct fastboot_ptentry* fb_part;
  		fb_part = fastboot_flash_find_ptn(str);
  		if (!fb_part) {
  			strncat(response, "Wrong partition name.", chars_left);

  			fastboot_flash_dump_ptn();

  			return -1;
  		} else {

  			snprintf(response + strlen(response), chars_left,

  				 "0x%llx",
  				 (uint64_t)fb_part->length * get_block_size());

  		}
  	} else if ((str = strstr(cmd, "partition-type:"))) {
  		str +=strlen("partition-type:");
  		struct fastboot_ptentry* fb_part;
  		fb_part = fastboot_flash_find_ptn(str);
  		if (!fb_part) {
  			strncat(response, "Wrong partition name.", chars_left);

  			fastboot_flash_dump_ptn();

  			return -1;
  		} else {
  			strncat(response, fb_part->fstype, chars_left);
  		}
  	} else if (!strcmp_l1("version-baseband", cmd)) {
  		strncat(response, "N/A", chars_left);
  	} else if (!strcmp_l1("version-bootloader", cmd) ||
  		!strcmp_l1("bootloader-version", cmd)) {
  		strncat(response, U_BOOT_VERSION, chars_left);
  	} else if (!strcmp_l1("version", cmd)) {
  		strncat(response, FASTBOOT_VERSION, chars_left);
  	} else if (!strcmp_l1("battery-voltage", cmd)) {
  		strncat(response, "0mV", chars_left);
  	} else if (!strcmp_l1("battery-soc-ok", cmd)) {
  		strncat(response, "yes", chars_left);
  	} else if (!strcmp_l1("variant", cmd)) {
  		strncat(response, VARIANT_NAME, chars_left);
  	} else if (!strcmp_l1("off-mode-charge", cmd)) {
  		strncat(response, "1", chars_left);
  	} else if (!strcmp_l1("downloadsize", cmd) ||
  		!strcmp_l1("max-download-size", cmd)) {
  
  		snprintf(response + strlen(response), chars_left, "0x%x", CONFIG_FASTBOOT_BUF_SIZE);
  	} else if (!strcmp_l1("erase-block-size", cmd)) {
  		mmc_dev_no = mmc_get_env_dev();
  		mmc = find_mmc_device(mmc_dev_no);
  		blksz = get_block_size();
  		snprintf(response + strlen(response), chars_left, "0x%x",
  				(blksz * mmc->erase_grp_size));
  	} else if (!strcmp_l1("logical-block-size", cmd)) {
  		blksz = get_block_size();
  		snprintf(response + strlen(response), chars_left, "0x%x", blksz);
  	} else if (!strcmp_l1("serialno", cmd)) {
  		s = get_serial();
  		if (s)
  			strncat(response, s, chars_left);
  		else {
  			strncat(response, "FAILValue not set", chars_left);
  			return -1;
  		}
  	} else if (!strcmp_l1("product", cmd)) {
  		strncat(response, PRODUCT_NAME, chars_left);
  	}

  #ifdef CONFIG_IMX_TRUSTY_OS
          else if(!strcmp_l1("at-attest-uuid", cmd)) {
  		char *uuid;
  		char uuid_str[ATAP_UUID_STR_SIZE];
  		if (trusty_atap_read_uuid_str(&uuid)) {
  			printf("ERROR read uuid failed!
  ");
  			strncat(response, "FAILCannot get uuid!", chars_left);
  			return -1;
  		} else {
  			uuid_hex2string((uint8_t*)uuid, uuid_str,ATAP_UUID_SIZE, ATAP_UUID_STR_SIZE);
  			strncat(response, uuid_str, chars_left);
  			trusty_free(uuid);
  		}
  	}

  	else if(!strcmp_l1("at-attest-dh", cmd)) {
  		strncat(response, "1:P256,2:curve25519", chars_left);
  	}

  #endif

  #ifdef CONFIG_FASTBOOT_LOCK
  	else if (!strcmp_l1("secure", cmd)) {
  		strncat(response, FASTBOOT_VAR_YES, chars_left);
  	} else if (!strcmp_l1("unlocked",cmd)){
  		int status = fastboot_get_lock_stat();
  		if (status == FASTBOOT_UNLOCK) {
  			strncat(response, FASTBOOT_VAR_YES, chars_left);
  		} else {
  			strncat(response, FASTBOOT_VAR_NO, chars_left);
  		}
  	}
  #else
  	else if (!strcmp_l1("secure", cmd)) {
  		strncat(response, FASTBOOT_VAR_NO, chars_left);
  	} else if (!strcmp_l1("unlocked",cmd)) {
  		strncat(response, FASTBOOT_VAR_NO, chars_left);
  	}
  #endif
  	else if (is_slotvar(cmd)) {
  #ifdef CONFIG_AVB_SUPPORT
  		if (get_slotvar_avb(&fsl_avb_ab_ops, cmd,
  				response + strlen(response), chars_left + 1) < 0)
  			return -1;
  #else
  		strncat(response, FASTBOOT_VAR_NO, chars_left);
  #endif
  	}

  #if defined(CONFIG_ANDROID_THINGS_SUPPORT) && defined(CONFIG_ARCH_IMX8M)
  	else if (!strcmp_l1("baseboard_id", cmd)) {
  		int baseboard_id;
  
  		baseboard_id = get_imx8m_baseboard_id();
  		if (baseboard_id < 0) {
  			printf("Get baseboard id failed!
  ");
  			strncat(response, "Get baseboard id failed!", chars_left);
  			return -1;
  		} else
  			snprintf(response + strlen(response), chars_left, "0x%x", baseboard_id);
  	}
  #endif

  #ifdef CONFIG_AVB_ATX
  	else if (!strcmp_l1("bootloader-locked", cmd)) {
  
  		/* Below is basically copied from is_hab_enabled() */
  		struct imx_sec_config_fuse_t *fuse =
  			(struct imx_sec_config_fuse_t *)&imx_sec_config_fuse;
  		uint32_t reg;
  		int ret;
  
  		/* Read the secure boot status from fuse. */
  		ret = fuse_read(fuse->bank, fuse->word, &reg);
  		if (ret) {
  			printf("
  Secure boot fuse read error!
  ");
  			strncat(response, "Secure boot fuse read error!", chars_left);
  			return -1;
  		}
  		/* Check if the secure boot bit is enabled */
  		if ((reg & 0x2000000) == 0x2000000)
  			strncat(response, "1", chars_left);
  		else
  			strncat(response, "0", chars_left);
  	} else if (!strcmp_l1("bootloader-min-versions", cmd)) {
  #ifndef CONFIG_ARM64
  		/* We don't support bootloader rbindex protection for
  		 * ARM32(like imx7d) and the format is: "bootloader,tee". */
  		strncat(response, "-1,-1", chars_left);
  
  #elif defined(CONFIG_DUAL_BOOTLOADER)
  		/* Rbindex protection for bootloader is supported only when the
  		 * 'dual bootloader' feature is enabled. U-boot will get the rbindx
  		 * from RAM which is passed by spl because we can only get the rbindex
  		 * at spl stage. The format in this case is: "spl,atf,tee,u-boot".
  		 */
  		struct bl_rbindex_package *bl_rbindex;
  		uint32_t rbindex;
  
  		bl_rbindex = (struct bl_rbindex_package *)BL_RBINDEX_LOAD_ADDR;
  		if (!strncmp(bl_rbindex->magic, BL_RBINDEX_MAGIC,
  				BL_RBINDEX_MAGIC_LEN)) {
  			rbindex = bl_rbindex->rbindex;
  			snprintf(response + strlen(response), chars_left,
  					"-1,%d,%d,%d",rbindex, rbindex, rbindex);
  		} else {
  			printf("Error bootloader rbindex magic!
  ");
  			strncat(response, "Get bootloader rbindex fail!", chars_left);
  			return -1;
  		}
  #else
  		/* Return -1 for all partition if 'dual bootloader' feature
  		 * is not enabled */
  		strncat(response, "-1,-1,-1,-1", chars_left);
  #endif
  	} else if (!strcmp_l1("avb-perm-attr-set", cmd)) {
  		if (perm_attr_are_fused())
  			strncat(response, "1", chars_left);
  		else
  			strncat(response, "0", chars_left);
  	} else if (!strcmp_l1("avb-locked", cmd)) {
  		FbLockState status;
  
  		status = fastboot_get_lock_stat();
  		if (status == FASTBOOT_LOCK)
  			strncat(response, "1", chars_left);
  		else if (status == FASTBOOT_UNLOCK)
  			strncat(response, "0", chars_left);
  		else {
  			printf("Get lock state error!
  ");
  			strncat(response, "Get lock state failed!", chars_left);
  			return -1;
  		}
  	} else if (!strcmp_l1("avb-unlock-disabled", cmd)) {
  		if (at_unlock_vboot_is_disabled())
  			strncat(response, "1", chars_left);
  		else
  			strncat(response, "0", chars_left);
  	} else if (!strcmp_l1("avb-min-versions", cmd)) {
  		int i = 0;
  		/* rbindex location/value can be very large
  		 * number so we reserve enough space here.
  		 */
  		char buffer[35];
  		uint32_t rbindex_location[AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS + 2];
  		uint32_t location;
  		uint64_t rbindex;
  
  		memset(buffer, '\0', sizeof(buffer));
  
  		/* Set rbindex locations. */
  		for (i = 0; i < AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS; i++)
  			rbindex_location[i] = i;
  
  		/* Set Android Things key version rbindex locations */
  		rbindex_location[AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS]
  						= AVB_ATX_PIK_VERSION_LOCATION;
  		rbindex_location[AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS + 1]
  						= AVB_ATX_PSK_VERSION_LOCATION;
  
  		/* Read rollback index and set the reponse*/
  		for (i = 0; i < AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS + 2; i++) {
  			location = rbindex_location[i];
  			if (fsl_avb_ops.read_rollback_index(&fsl_avb_ops,
  								location, &rbindex)
  								!= AVB_IO_RESULT_OK) {
  				printf("Read rollback index error!
  ");
  				snprintf(response, sizeof(response),
  					"INFOread rollback index error when get avb-min-versions");
  				return -1;
  			}
  			/* Generate the "location:value" pair */
  			snprintf(buffer, sizeof(buffer), "%d:%lld", location, rbindex);
  			if (i != AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS + 1)
  				strncat(buffer, ",", strlen(","));
  
  			if ((chars_left - (int)strlen(buffer)) >= 0) {
  				strncat(response, buffer, strlen(buffer));
  				chars_left -= strlen(buffer);
  			} else {
  				strncat(response, buffer, chars_left);
  				/* reponse buffer is full, send it first */
  				fastboot_tx_write_more(response);
  				/* reset the reponse buffer for next round */
  				memset(response, '\0', sizeof(response));
  				strncpy(response, "INFO", 5);
  				/* Copy left strings from 'buffer' to 'response' */
  				strncat(response, buffer + chars_left, strlen(buffer));
  				chars_left = FASTBOOT_RESPONSE_LEN -
  						strlen(response) - 1;
  			}
  		}
  
  	}
  #endif

  	else {
  		char envstr[32];
  
  		snprintf(envstr, sizeof(envstr) - 1, "fastboot.%s", cmd);
  		s = env_get(envstr);
  		if (s) {
  			strncat(response, s, chars_left);
  		} else {

  			snprintf(response, chars_left, "FAILunknown variable:%s",cmd);

  			printf("WARNING: unknown variable: %s
  ", cmd);
  			return -1;
  		}
  	}
  	return 0;
  }
  
  static void cb_getvar(struct usb_ep *ep, struct usb_request *req)
  {
  	int n = 0;
  	int status = 0;
  	int count = 0;
  	char *cmd = req->buf;

  	char var_name[FASTBOOT_RESPONSE_LEN];

  	char partition_base_name[MAX_PTN][16];
  	char slot_suffix[2][5] = {"a","b"};

  	char response[FASTBOOT_RESPONSE_LEN];

  
  	strsep(&cmd, ":");
  	if (!cmd) {
  		pr_err("missing variable");
  		fastboot_tx_write_str("FAILmissing var");
  		return;
  	}
  
  	if (!strcmp_l1("all", cmd)) {

  		memset(response, '\0', FASTBOOT_RESPONSE_LEN);

  
  
  		/* get common variables */
  		for (n = 0; n < FASTBOOT_COMMON_VAR_NUM; n++) {
  			snprintf(response, sizeof(response), "INFO%s:", fastboot_common_var[n]);
  			get_single_var(fastboot_common_var[n], response);
  			fastboot_tx_write_more(response);
  		}

  		/* get at-vboot-state variables */
  #ifdef CONFIG_AVB_ATX
  		for (n = 0; n < AT_VBOOT_STATE_VAR_NUM; n++) {
  			snprintf(response, sizeof(response), "INFO%s:", fastboot_at_vboot_state_var[n]);
  			get_single_var(fastboot_at_vboot_state_var[n], response);
  			fastboot_tx_write_more(response);
  		}
  #endif

  		/* get partition type */
  		for (n = 0; n < g_pcount; n++) {
  			snprintf(response, sizeof(response), "INFOpartition-type:%s:", g_ptable[n].name);
  			snprintf(var_name, sizeof(var_name), "partition-type:%s", g_ptable[n].name);
  			get_single_var(var_name, response);
  			fastboot_tx_write_more(response);
  		}
  		/* get partition size */
  		for (n = 0; n < g_pcount; n++) {
  			snprintf(response, sizeof(response), "INFOpartition-size:%s:", g_ptable[n].name);
  			snprintf(var_name, sizeof(var_name), "partition-size:%s", g_ptable[n].name);
  			get_single_var(var_name,response);
  			fastboot_tx_write_more(response);
  		}
  		/* slot related variables */
  		if (is_slot()) {
  			/* get has-slot variables */
  			count = get_partition_base_name(partition_base_name);
  			for (n = 0; n < count; n++) {
  				snprintf(response, sizeof(response), "INFOhas-slot:%s:", partition_base_name[n]);
  				snprintf(var_name, sizeof(var_name), "has-slot:%s", partition_base_name[n]);
  				get_single_var(var_name,response);
  				fastboot_tx_write_more(response);
  			}
  			/* get current slot */
  			strncpy(response, "INFOcurrent-slot:", sizeof(response));
  			get_single_var("current-slot", response);
  			fastboot_tx_write_more(response);
  			/* get slot count */
  			strncpy(response, "INFOslot-count:", sizeof(response));
  			get_single_var("slot-count", response);
  			fastboot_tx_write_more(response);
  			/* get slot-successful variable */
  			for (n = 0; n < 2; n++) {
  				snprintf(response, sizeof(response), "INFOslot-successful:%s:", slot_suffix[n]);
  				snprintf(var_name, sizeof(var_name), "slot-successful:%s", slot_suffix[n]);
  				get_single_var(var_name, response);
  				fastboot_tx_write_more(response);
  			}
  			/*get slot-unbootable variable*/
  			for (n = 0; n < 2; n++) {
  				snprintf(response, sizeof(response), "INFOslot-unbootable:%s:", slot_suffix[n]);
  				snprintf(var_name, sizeof(var_name), "slot-unbootable:%s", slot_suffix[n]);
  				get_single_var(var_name, response);
  				fastboot_tx_write_more(response);
  			}
  			/*get slot-retry-count variable*/
  			for (n = 0; n < 2; n++) {
  				snprintf(response, sizeof(response), "INFOslot-retry-count:%s:", slot_suffix[n]);
  				snprintf(var_name, sizeof(var_name), "slot-retry-count:%s", slot_suffix[n]);
  				get_single_var(var_name, response);
  				fastboot_tx_write_more(response);
  			}
  		}
  
  		strncpy(response, "OKAYDone!", 10);
  		fastboot_tx_write_more(response);
  
  		return;

  	}
  #ifdef CONFIG_AVB_ATX
  	else if (!strcmp_l1("at-vboot-state", cmd)) {
  			/* get at-vboot-state variables */
  		for (n = 0; n < AT_VBOOT_STATE_VAR_NUM; n++) {
  			snprintf(response, sizeof(response), "INFO%s:", fastboot_at_vboot_state_var[n]);
  			get_single_var(fastboot_at_vboot_state_var[n], response);
  			fastboot_tx_write_more(response);
  		}
  
  		strncpy(response, "OKAY", 5);
  		fastboot_tx_write_more(response);
  
  		return;
  	} else if ((!strcmp_l1("bootloader-locked", cmd)) ||
  			(!strcmp_l1("bootloader-min-versions", cmd)) ||
  			(!strcmp_l1("avb-perm-attr-set", cmd)) ||
  			(!strcmp_l1("avb-locked", cmd)) ||
  			(!strcmp_l1("avb-unlock-disabled", cmd)) ||
  			(!strcmp_l1("avb-min-versions", cmd))) {
  
  		printf("Can't get this variable alone, get 'at-vboot-state' instead!
  ");
  		snprintf(response, sizeof(response),
  			"FAILCan't get this variable alone, get 'at-vboot-state' instead.");
  		fastboot_tx_write_str(response);
  		return;
  	}
  #endif
  	else {

  
  		strncpy(response, "OKAY", 5);
  		status = get_single_var(cmd, response);
  		if (status != 0) {
  			strncpy(response, "FAIL", 5);
  		}
  		fastboot_tx_write_str(response);
  		return;
  	}
  }
  
  #ifdef CONFIG_FASTBOOT_LOCK
  
  int do_lock_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) {
  	FbLockState status = fastboot_get_lock_stat();
  	if (status != FASTBOOT_LOCK_ERROR) {
  		if (status == FASTBOOT_LOCK)
  			printf("fastboot lock status: locked.
  ");
  		else
  			printf("fastboot lock status: unlocked.
  ");
  	} else
  		printf("fastboot lock status error!
  ");
  
  	display_lock(status, -1);
  
  	return 0;
  
  }
  
  U_BOOT_CMD(
  	lock_status, 2, 1, do_lock_status,
  	"lock_status",
  	"lock_status");

  static void wipe_all_userdata(void)
  {
  	char response[FASTBOOT_RESPONSE_LEN];
  
  	/* Erase all user data */
  	printf("Start userdata wipe process....
  ");
  	/* Erase /data partition */
  	fastboot_wipe_data_partition();

  #if defined (CONFIG_ANDROID_SUPPORT) || defined (CONFIG_ANDROID_AUTO_SUPPORT)

  	/* Erase the misc partition. */
  	process_erase_mmc(FASTBOOT_PARTITION_MISC, response);
  #endif
  
  #ifndef CONFIG_ANDROID_AB_SUPPORT
  	/* Erase the cache partition for legacy imx6/7 */
  	process_erase_mmc(FASTBOOT_PARTITION_CACHE, response);
  #endif
  	/* The unlock permissive flag is set by user and should be wiped here. */
  	set_fastboot_lock_disable();

  #if defined(AVB_RPMB) && !defined(CONFIG_IMX_TRUSTY_OS)

  	printf("Start stored_rollback_index wipe process....
  ");
  	rbkidx_erase();
  	printf("Wipe stored_rollback_index completed.
  ");
  #endif
  	printf("Wipe userdata completed.
  ");
  }

  static FbLockState do_fastboot_unlock(bool force)
  {
  	int status;

  	if (fastboot_get_lock_stat() == FASTBOOT_UNLOCK) {
  		printf("The device is already unlocked
  ");
  		return FASTBOOT_UNLOCK;
  	}

  	if ((fastboot_lock_enable() == FASTBOOT_UL_ENABLE) || force) {
  		printf("It is able to unlock device. %d
  ",fastboot_lock_enable());

  		status = fastboot_set_lock_stat(FASTBOOT_UNLOCK);
  		if (status < 0)
  			return FASTBOOT_LOCK_ERROR;

  		wipe_all_userdata();

  	} else {
  		printf("It is not able to unlock device.");
  		return FASTBOOT_LOCK_ERROR;
  	}
  
  	return FASTBOOT_UNLOCK;
  }
  
  static FbLockState do_fastboot_lock(void)
  {
  	int status;

  	if (fastboot_get_lock_stat() == FASTBOOT_LOCK) {
  		printf("The device is already locked
  ");
  		return FASTBOOT_LOCK;
  	}
  	status = fastboot_set_lock_stat(FASTBOOT_LOCK);
  	if (status < 0)
  		return FASTBOOT_LOCK_ERROR;

  	wipe_all_userdata();

  
  	return FASTBOOT_LOCK;
  }

  static bool endswith(char* s, char* subs) {
  	if (!s || !subs)
  		return false;
  	uint32_t len = strlen(s);
  	uint32_t sublen = strlen(subs);
  	if (len < sublen) {
  		return false;
  	}
  	if (strncmp(s + len - sublen, subs, sublen)) {
  		return false;
  	}
  	return true;
  }

  static void cb_flashing(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmd = req->buf;
  	char response[FASTBOOT_RESPONSE_LEN];

  	FbLockState status;
  	FbLockEnableResult result;

  	if (endswith(cmd, "lock_critical")) {

  		strcpy(response, "OKAY");

  	}
  #ifdef CONFIG_AVB_ATX
  	else if (endswith(cmd, FASTBOOT_AVB_AT_PERM_ATTR)) {
  		if (avb_atx_fuse_perm_attr(interface.transfer_buffer, download_bytes))
  			strcpy(response, "FAILInternal error!");
  		else
  			strcpy(response, "OKAY");

  	} else if (endswith(cmd, FASTBOOT_AT_GET_UNLOCK_CHALLENGE)) {
  		if (avb_atx_get_unlock_challenge(fsl_avb_ops.atx_ops,
  						interface.transfer_buffer, &download_bytes))
  			strcpy(response, "FAILInternal error!");
  		else
  			strcpy(response, "OKAY");
  	} else if (endswith(cmd, FASTBOOT_AT_UNLOCK_VBOOT)) {

  		if (at_unlock_vboot_is_disabled()) {
  			printf("unlock vboot already disabled, can't unlock the device!
  ");
  			strcpy(response, "FAILunlock vboot already disabled!.");
  		} else {

  #ifdef CONFIG_AT_AUTHENTICATE_UNLOCK

  			if (avb_atx_verify_unlock_credential(fsl_avb_ops.atx_ops,
  								interface.transfer_buffer))
  				strcpy(response, "FAILIncorrect unlock credential!");
  			else {
  #endif
  				status = do_fastboot_unlock(true);
  				if (status != FASTBOOT_LOCK_ERROR)
  					strcpy(response, "OKAY");
  				else
  					strcpy(response, "FAILunlock device failed.");

  #ifdef CONFIG_AT_AUTHENTICATE_UNLOCK

  			}

  #endif

  		}

  	} else if (endswith(cmd, FASTBOOT_AT_LOCK_VBOOT)) {
  		if (perm_attr_are_fused()) {
  			status = do_fastboot_lock();
  			if (status != FASTBOOT_LOCK_ERROR)
  				strcpy(response, "OKAY");
  			else
  				strcpy(response, "FAILlock device failed.");
  		} else
  			strcpy(response, "FAILpermanent attributes not fused!");

  	} else if (endswith(cmd, FASTBOOT_AT_DISABLE_UNLOCK_VBOOT)) {
  		/* This command can only be called after 'oem at-lock-vboot' */
  		status = fastboot_get_lock_stat();
  		if (status == FASTBOOT_LOCK) {
  			if (at_unlock_vboot_is_disabled()) {
  				printf("unlock vboot already disabled!
  ");
  				strcpy(response, "OKAY");
  			}
  			else {
  				if (!at_disable_vboot_unlock())
  					strcpy(response, "OKAY");
  				else
  					strcpy(response, "FAILdisable unlock vboot fail!");
  			}
  		} else
  			strcpy(response, "FAILplease lock the device first!");

  	}
  #endif /* CONFIG_AVB_ATX */
  #ifdef CONFIG_ANDROID_THINGS_SUPPORT

  	else if (endswith(cmd, FASTBOOT_BOOTLOADER_VBOOT_KEY)) {

  		strcpy(response, "OKAY");

  	}
  #endif /* CONFIG_ANDROID_THINGS_SUPPORT */

  #ifdef CONFIG_IMX_TRUSTY_OS
  	else if (endswith(cmd, FASTBOOT_GET_CA_REQ)) {
  		uint8_t *ca_output;
  		uint32_t ca_length, cp_length;
  		if (trusty_atap_get_ca_request(interface.transfer_buffer, download_bytes,
  						&(ca_output), &ca_length)) {
  			printf("ERROR get_ca_request failed!
  ");
  			strcpy(response, "FAILInternal error!");
  		} else {
  			cp_length = min((uint32_t)CONFIG_FASTBOOT_BUF_SIZE, ca_length);
  			memcpy(interface.transfer_buffer, ca_output, cp_length);
  			download_bytes = ca_length;
  			strcpy(response, "OKAY");
  		}
  
  	}
  	else if (endswith(cmd, FASTBOOT_SET_CA_RESP)) {
  		if (trusty_atap_set_ca_response(interface.transfer_buffer,download_bytes)) {
  			printf("ERROR set_ca_response failed!
  ");
  			strcpy(response, "FAILInternal error!");
  		} else
  			strcpy(response, "OKAY");
  	}

  #ifndef CONFIG_AVB_ATX

  	else if (endswith(cmd, FASTBOOT_SET_RPMB_KEY)) {
  		if (fastboot_set_rpmb_key(interface.transfer_buffer, download_bytes)) {
  			printf("ERROR set rpmb key failed!
  ");
  			strcpy(response, "FAILset rpmb key failed!");
  		} else
  			strcpy(response, "OKAY");

  	} else if (endswith(cmd, FASTBOOT_SET_RPMB_RANDOM_KEY)) {
  		if (fastboot_set_rpmb_random_key()) {
  			printf("ERROR set rpmb random key failed!
  ");
  			strcpy(response, "FAILset rpmb random key failed!");
  		} else
  			strcpy(response, "OKAY");

  	} else if (endswith(cmd, FASTBOOT_SET_VBMETA_PUBLIC_KEY)) {
  		if (avb_set_public_key(interface.transfer_buffer,
  					download_bytes))
  			strcpy(response, "FAILcan't set public key!");
  		else
  			strcpy(response, "OKAY");

  	}

  #endif /* !CONFIG_AVB_ATX */

  #endif /* CONFIG_IMX_TRUSTY_OS */

  	else if (endswith(cmd, "unlock_critical")) {

  		strcpy(response, "OKAY");

  	} else if (endswith(cmd, "unlock")) {

  		printf("flashing unlock.
  ");

  #ifdef CONFIG_AVB_ATX
  		/* We should do nothing here For Android Things which
  		 * enables the authenticated unlock feature.
  		 */
  		strcpy(response, "OKAY");
  #else

  		status = do_fastboot_unlock(false);
  		if (status != FASTBOOT_LOCK_ERROR)
  			strcpy(response, "OKAY");
  		else

  			strcpy(response, "FAILunlock device failed.");

  #endif

  	} else if (endswith(cmd, "lock")) {

  #ifdef CONFIG_AVB_ATX
  		/* We should do nothing here For Android Things which
  		 * enables the at-lock-vboot feature.
  		 */
  		strcpy(response, "OKAY");
  #else

  		printf("flashing lock.
  ");
  		status = do_fastboot_lock();
  		if (status != FASTBOOT_LOCK_ERROR)
  			strcpy(response, "OKAY");
  		else

  			strcpy(response, "FAILlock device failed.");

  #endif

  	} else if (endswith(cmd, "get_unlock_ability")) {

  		result = fastboot_lock_enable();
  		if (result == FASTBOOT_UL_ENABLE) {
  			fastboot_tx_write_more("INFO1");
  			strcpy(response, "OKAY");
  		} else if (result == FASTBOOT_UL_DISABLE) {
  			fastboot_tx_write_more("INFO0");
  			strcpy(response, "OKAY");
  		} else {
  			printf("flashing get_unlock_ability fail!
  ");

  			strcpy(response, "FAILget unlock ability failed.");

  		}
  	} else {
  		printf("Unknown flashing command:%s
  ", cmd);

  		strcpy(response, "FAILcommand not defined");

  	}
  	fastboot_tx_write_more(response);
  }

  #endif /* CONFIG_FASTBOOT_LOCK */
  
  #ifdef CONFIG_FSL_FASTBOOT
  #ifdef CONFIG_FASTBOOT_LOCK

  static int partition_table_valid(void)
  {
  	int status, mmc_no;
  	struct blk_desc *dev_desc;

  #if defined(CONFIG_IMX_TRUSTY_OS) && !defined(CONFIG_ARM64)

  	//Prevent other partition accessing when no TOS flashed.
  	if (!tos_flashed)
  		return 0;
  #endif

  	disk_partition_t info;
  	mmc_no = fastboot_devinfo.dev_id;
  	dev_desc = blk_get_dev("mmc", mmc_no);
  	if (dev_desc)
  		status = part_get_info(dev_desc, 1, &info);
  	else
  		status = -1;
  	return (status == 0);
  }

  #endif

  #endif /* CONFIG_FASTBOOT_LOCK */
  
  #ifdef CONFIG_FASTBOOT_FLASH
  static void cb_flash(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmd = req->buf;
  	char response[FASTBOOT_RESPONSE_LEN];
  
  	strsep(&cmd, ":");
  	if (!cmd) {
  		pr_err("missing partition name");
  		fastboot_tx_write_str("FAILmissing partition name");
  		return;
  	}
  
  	/* initialize the response buffer */
  	fb_response_str = response;

  	/* Always enable image flash for Android Things. */
  #if defined(CONFIG_FASTBOOT_LOCK) && !defined(CONFIG_AVB_ATX)

  	int status;
  	status = fastboot_get_lock_stat();

  	if (status == FASTBOOT_LOCK) {
  		pr_err("device is LOCKed!
  ");
  		strcpy(response, "FAIL device is locked.");
  		fastboot_tx_write_str(response);
  		return;

  	} else if (status == FASTBOOT_LOCK_ERROR) {
  		pr_err("write lock status into device!
  ");
  		fastboot_set_lock_stat(FASTBOOT_LOCK);
  		strcpy(response, "FAILdevice is locked.");
  		fastboot_tx_write_str(response);
  		return;

  	}
  #endif
  	fastboot_fail("no flash device defined");

  	rx_process_flash(cmd);

  #ifdef CONFIG_FASTBOOT_LOCK
  	if (strncmp(cmd, "gpt", 3) == 0) {

  		int gpt_valid = 0;
  		gpt_valid = partition_table_valid();

  		/* If gpt is valid, load partitons table into memory.
  		   So if the next command is "fastboot reboot bootloader",
  		   it can find the "misc" partition to r/w. */

  		if(gpt_valid) {

  			_fastboot_load_partitions();

  			/* Unlock device if the gpt is valid */

  			do_fastboot_unlock(true);

  		}

  	}

  #endif
  	fastboot_tx_write_str(response);

  }

  #endif

  #ifdef CONFIG_FASTBOOT_FLASH
  static void cb_erase(struct usb_ep *ep, struct usb_request *req)

  {

  	char *cmd = req->buf;
  	char response[FASTBOOT_RESPONSE_LEN];

  	strsep(&cmd, ":");
  	if (!cmd) {
  		pr_err("missing partition name");
  		fastboot_tx_write_str("FAILmissing partition name");
  		return;
  	}

  	/* initialize the response buffer */
  	fb_response_str = response;

  #if defined(CONFIG_FASTBOOT_LOCK) && !defined(CONFIG_AVB_ATX)

  	FbLockState status;
  	status = fastboot_get_lock_stat();
  	if (status == FASTBOOT_LOCK) {
  		pr_err("device is LOCKed!
  ");
  		strcpy(response, "FAIL device is locked.");
  		fastboot_tx_write_str(response);
  		return;
  	} else if (status == FASTBOOT_LOCK_ERROR) {
  		pr_err("write lock status into device!
  ");
  		fastboot_set_lock_stat(FASTBOOT_LOCK);

  		strcpy(response, "FAILdevice is locked.");

  		fastboot_tx_write_str(response);
  		return;
  	}
  #endif
  	rx_process_erase(cmd, response);
  	fastboot_tx_write_str(response);

  }

  #endif

  #ifndef CONFIG_NOT_UUU_BUILD

  static void cb_run_uboot_cmd(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmd = req->buf;
  	strsep(&cmd, ":");
  	if (!cmd) {
  		pr_err("missing slot suffix
  ");
  		fastboot_tx_write_str("FAILmissing command");
  		return;
  	}

  	if(run_command(cmd, 0)) {

  		fastboot_tx_write_str("FAIL");

  	} else {

  		fastboot_tx_write_str("OKAY");

  		/* cmd may impact fastboot related environment*/
  		fastboot_setup();
  	}

  	return ;
  }
  
  static char g_a_cmd_buff[64];
  static void do_acmd_complete(struct usb_ep *ep, struct usb_request *req)
  {
  	/* When usb dequeue complete will be called
  	 * Meed status value before call run_command.
  	 * otherwise, host can't get last message.
  	 */
  	if(req->status == 0)
  		run_command(g_a_cmd_buff, 0);
  }
  
  static void cb_run_uboot_acmd(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmd = req->buf;
          strsep(&cmd, ":");
          if (!cmd) {
                  pr_err("missing slot suffix
  ");
                  fastboot_tx_write_str("FAILmissing command");
                  return;
          }
  	strcpy(g_a_cmd_buff, cmd);
  	fastboot_func->in_req->complete = do_acmd_complete;
  	fastboot_tx_write_str("OKAY");
  }

  #endif

  #ifdef CONFIG_AVB_SUPPORT
  static void cb_set_active_avb(struct usb_ep *ep, struct usb_request *req)

  {

  	AvbIOResult ret;
  	int slot = 0;

  	char *cmd = req->buf;

  
  	strsep(&cmd, ":");
  	if (!cmd) {
  		pr_err("missing slot suffix
  ");
  		fastboot_tx_write_str("FAILmissing slot suffix");
  		return;

  	}

  
  	slot = slotidx_from_suffix(cmd);
  
  	if (slot < 0) {
  		fastboot_tx_write_str("FAILerr slot suffix");
  		return;
  	}
  
  	ret = avb_ab_mark_slot_active(&fsl_avb_ab_ops, slot);
  	if (ret != AVB_IO_RESULT_OK)
  		fastboot_tx_write_str("avb IO error");
  	else
  		fastboot_tx_write_str("OKAY");
  
  	return;

  }

  #endif /*CONFIG_AVB_SUPPORT*/

  static void cb_reboot_bootloader(struct usb_ep *ep, struct usb_request *req)

  {

  	enable_fastboot_command();

          fastboot_func->in_req->complete = compl_do_reset;
          fastboot_tx_write_str("OKAY");

  }

  #else /* CONFIG_FSL_FASTBOOT */

  static void cb_getvar(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmd = req->buf;

  	char response[FASTBOOT_RESPONSE_LEN];

  	const char *s;

  	size_t chars_left;

  
  	strcpy(response, "OKAY");

  	chars_left = sizeof(response) - strlen(response) - 1;

  	strsep(&cmd, ":");
  	if (!cmd) {

  		pr_err("missing variable");

  		fastboot_tx_write_str("FAILmissing var");
  		return;
  	}
  
  	if (!strcmp_l1("version", cmd)) {

  		strncat(response, FASTBOOT_VERSION, chars_left);

  	} else if (!strcmp_l1("bootloader-version", cmd)) {

  		strncat(response, U_BOOT_VERSION, chars_left);

  	} else if (!strcmp_l1("downloadsize", cmd) ||
  		!strcmp_l1("max-download-size", cmd)) {

  		char str_num[12];

  		sprintf(str_num, "0x%08x", CONFIG_FASTBOOT_BUF_SIZE);

  		strncat(response, str_num, chars_left);

  	} else if (!strcmp_l1("serialno", cmd)) {

  		s = env_get("serial#");

  		if (s)

  			strncat(response, s, chars_left);

  		else
  			strcpy(response, "FAILValue not set");
  	} else {

  		char *envstr;

  		envstr = malloc(strlen("fastboot.") + strlen(cmd) + 1);
  		if (!envstr) {
  			fastboot_tx_write_str("FAILmalloc error");
  			return;
  		}
  
  		sprintf(envstr, "fastboot.%s", cmd);

  		s = env_get(envstr);

  		if (s) {
  			strncat(response, s, chars_left);
  		} else {
  			printf("WARNING: unknown variable: %s
  ", cmd);
  			strcpy(response, "FAILVariable not implemented");
  		}

  
  		free(envstr);

  	}
  	fastboot_tx_write_str(response);
  }

  #ifdef CONFIG_FASTBOOT_FLASH
  static void cb_flash(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmd = req->buf;
  	char response[FASTBOOT_RESPONSE_LEN];
  
  	strsep(&cmd, ":");
  	if (!cmd) {
  		pr_err("missing partition name");
  		fastboot_tx_write_str("FAILmissing partition name");
  		return;
  	}
  
  	/* initialize the response buffer */
  	fb_response_str = response;
  
  	fastboot_fail("no flash device defined");
  #ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
  	fb_mmc_flash_write(cmd, (void *)CONFIG_FASTBOOT_BUF_ADDR,
  			   download_bytes);
  #endif
  #ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
  	fb_nand_flash_write(cmd,
  			    (void *)CONFIG_FASTBOOT_BUF_ADDR,
  			    download_bytes);
  #endif
  	fastboot_tx_write_str(response);
  }
  #endif
  
  static void cb_oem(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmd = req->buf;
  #ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
  	if (strncmp("format", cmd + 4, 6) == 0) {
  		char cmdbuf[32];
                  sprintf(cmdbuf, "gpt write mmc %x $partitions",
  			CONFIG_FASTBOOT_FLASH_MMC_DEV);
                  if (run_command(cmdbuf, 0))
  			fastboot_tx_write_str("FAIL");
                  else
  			fastboot_tx_write_str("OKAY");
  	} else
  #endif
  	if (strncmp("unlock", cmd + 4, 8) == 0) {
  		fastboot_tx_write_str("FAILnot implemented");
  	}
  	else {
  		fastboot_tx_write_str("FAILunknown oem command");
  	}
  }
  
  #ifdef CONFIG_FASTBOOT_FLASH
  static void cb_erase(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmd = req->buf;
  	char response[FASTBOOT_RESPONSE_LEN];
  
  	strsep(&cmd, ":");
  	if (!cmd) {
  		pr_err("missing partition name");
  		fastboot_tx_write_str("FAILmissing partition name");
  		return;
  	}
  
  	/* initialize the response buffer */
  	fb_response_str = response;
  
  	fastboot_fail("no flash device defined");
  #ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
  	fb_mmc_erase(cmd);
  #endif
  #ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
  	fb_nand_erase(cmd);
  #endif
  	fastboot_tx_write_str(response);
  }
  #endif
  
  #endif /* CONFIG_FSL_FASTBOOT*/

  static unsigned int rx_bytes_expected(struct usb_ep *ep)

  {
  	int rx_remain = download_size - download_bytes;

  	unsigned int rem;
  	unsigned int maxpacket = ep->maxpacket;
  
  	if (rx_remain <= 0)

  		return 0;

  	else if (rx_remain > EP_BUFFER_SIZE)

  		return EP_BUFFER_SIZE;

  
  	/*
  	 * Some controllers e.g. DWC3 don't like OUT transfers to be
  	 * not ending in maxpacket boundary. So just make them happy by
  	 * always requesting for integral multiple of maxpackets.
  	 * This shouldn't bother controllers that don't care about it.
  	 */
  	rem = rx_remain % maxpacket;
  	if (rem > 0)

  		rx_remain = rx_remain + (maxpacket - rem);

  	return rx_remain;
  }
  
  #define BYTES_PER_DOT	0x20000
  static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req)
  {

  	char response[FASTBOOT_RESPONSE_LEN];

  	unsigned int transfer_size = download_size - download_bytes;
  	const unsigned char *buffer = req->buf;
  	unsigned int buffer_size = req->actual;

  	unsigned int pre_dot_num, now_dot_num;

  	void * base_addr = (void*)env_get_ulong("fastboot_buffer", 16, CONFIG_FASTBOOT_BUF_ADDR);

  
  	if (req->status != 0) {
  		printf("Bad status: %d
  ", req->status);
  		return;
  	}
  
  	if (buffer_size < transfer_size)
  		transfer_size = buffer_size;

  	memcpy(base_addr + download_bytes,

  	       buffer, transfer_size);

  	pre_dot_num = download_bytes / BYTES_PER_DOT;

  	download_bytes += transfer_size;

  	now_dot_num = download_bytes / BYTES_PER_DOT;
  
  	if (pre_dot_num != now_dot_num) {
  		putc('.');
  		if (!(now_dot_num % 74))
  			putc('
  ');
  	}

  
  	/* Check if transfer is done */
  	if (download_bytes >= download_size) {
  		/*
  		 * Reset global transfer variable, keep download_bytes because
  		 * it will be used in the next possible flashing command
  		 */
  		download_size = 0;
  		req->complete = rx_handler_command;
  		req->length = EP_BUFFER_SIZE;

  		strcpy(response, "OKAY");

  		fastboot_tx_write_str(response);

  		env_set_hex("fastboot_bytes", download_bytes);

  
  		printf("
  downloading of %d bytes finished
  ", download_bytes);
  	} else {

  		req->length = rx_bytes_expected(ep);

  	}

  	req->actual = 0;
  	usb_ep_queue(ep, req, 0);
  }

  static void cb_upload(struct usb_ep *ep, struct usb_request *req)
  {
  	char response[FASTBOOT_RESPONSE_LEN];
  
  	if (!download_bytes || download_bytes > (EP_BUFFER_SIZE * 32)) {
  		sprintf(response, "FAIL");
  		fastboot_tx_write_str(response);
  		return;
  	}
  
  	printf("Will upload %d bytes.
  ", download_bytes);
  	snprintf(response, FASTBOOT_RESPONSE_LEN, "DATA%08x", download_bytes);
  	fastboot_tx_write_more(response);
  
  	fastboot_tx_write((const char *)(interface.transfer_buffer), download_bytes);
  
  	snprintf(response,FASTBOOT_RESPONSE_LEN, "OKAY");
  	fastboot_tx_write_more(response);
  }

  static void cb_download(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmd = req->buf;

  	char response[FASTBOOT_RESPONSE_LEN];

  
  	strsep(&cmd, ":");
  	download_size = simple_strtoul(cmd, NULL, 16);
  	download_bytes = 0;
  
  	printf("Starting download of %d bytes
  ", download_size);
  
  	if (0 == download_size) {

  		strcpy(response, "FAILdata invalid size");

  	} else if (download_size > CONFIG_FASTBOOT_BUF_SIZE) {

  		download_size = 0;

  		strcpy(response, "FAILdata too large");

  	} else {
  		sprintf(response, "DATA%08x", download_size);
  		req->complete = rx_handler_dl_image;

  		req->length = rx_bytes_expected(ep);

  	}
  	fastboot_tx_write_str(response);
  }
  
  static void do_bootm_on_complete(struct usb_ep *ep, struct usb_request *req)
  {
  	char boot_addr_start[12];

  #ifdef CONFIG_FSL_FASTBOOT
  	char *bootm_args[] = { "boota", boot_addr_start, NULL };
  	sprintf(boot_addr_start, "0x%lx", load_addr);
  #else

  	char *bootm_args[] = { "bootm", boot_addr_start, NULL };

  	sprintf(boot_addr_start, "0x%lx", (long)CONFIG_FASTBOOT_BUF_ADDR);
  #endif

  
  	puts("Booting kernel..
  ");

  	do_bootm(NULL, 0, 2, bootm_args);
  
  	/* This only happens if image is somehow faulty so we start over */
  	do_reset(NULL, 0, 0, NULL);
  }
  
  static void cb_boot(struct usb_ep *ep, struct usb_request *req)
  {
  	fastboot_func->in_req->complete = do_bootm_on_complete;
  	fastboot_tx_write_str("OKAY");
  }

  static void do_exit_on_complete(struct usb_ep *ep, struct usb_request *req)
  {
  	g_dnl_trigger_detach();
  }
  
  static void cb_continue(struct usb_ep *ep, struct usb_request *req)
  {
  	fastboot_func->in_req->complete = do_exit_on_complete;
  	fastboot_tx_write_str("OKAY");
  }

  struct cmd_dispatch_info {
  	char *cmd;
  	void (*cb)(struct usb_ep *ep, struct usb_request *req);
  };
  
  static const struct cmd_dispatch_info cmd_dispatch_info[] = {

  #ifdef CONFIG_FSL_FASTBOOT
  	{
  		.cmd = "reboot-bootloader",
  		.cb = cb_reboot_bootloader,
  	},
  	{
  		.cmd = "upload",
  		.cb = cb_upload,
  	},

  	{
  		.cmd = "get_staged",
  		.cb = cb_upload,
  	},

  #ifdef CONFIG_FASTBOOT_LOCK
  	{
  		.cmd = "flashing",
  		.cb = cb_flashing,
  	},
  	{
  		.cmd = "oem",
  		.cb = cb_flashing,
  	},
  #endif
  #ifdef CONFIG_AVB_SUPPORT
  	{
  		.cmd = "set_active",
  		.cb = cb_set_active_avb,
  	},
  #endif

  #ifndef CONFIG_NOT_UUU_BUILD

  	{
  		.cmd = "UCmd:",
  		.cb = cb_run_uboot_cmd,
  	},
  	{	.cmd ="ACmd:",
  		.cb = cb_run_uboot_acmd,
  	},

  #endif

  #endif

  	{
  		.cmd = "reboot",
  		.cb = cb_reboot,
  	}, {
  		.cmd = "getvar:",
  		.cb = cb_getvar,
  	}, {
  		.cmd = "download:",
  		.cb = cb_download,
  	}, {
  		.cmd = "boot",
  		.cb = cb_boot,

  	}, {
  		.cmd = "continue",
  		.cb = cb_continue,

  	},

  #ifdef CONFIG_FASTBOOT_FLASH
  	{
  		.cmd = "flash",
  		.cb = cb_flash,

  	}, {
  		.cmd = "erase",
  		.cb = cb_erase,

  	},
  #endif

  #ifndef CONFIG_FSL_FASTBOOT

  	{
  		.cmd = "oem",
  		.cb = cb_oem,
  	},

  #endif

  #ifdef CONFIG_AVB_ATX
  	{
  		.cmd = "stage",
  		.cb = cb_download,
  	},
  #endif

  };
  
  static void rx_handler_command(struct usb_ep *ep, struct usb_request *req)
  {
  	char *cmdbuf = req->buf;
  	void (*func_cb)(struct usb_ep *ep, struct usb_request *req) = NULL;
  	int i;

  	/* init in request FIFO pointer */
  	fastboot_func->front = NULL;
  	fastboot_func->rear  = NULL;

  	if (req->status != 0 || req->length == 0)
  		return;

  	for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) {
  		if (!strcmp_l1(cmd_dispatch_info[i].cmd, cmdbuf)) {
  			func_cb = cmd_dispatch_info[i].cb;
  			break;
  		}
  	}

  	if (!func_cb) {

  		pr_err("unknown command: %.*s", req->actual, cmdbuf);

  		fastboot_tx_write_str("FAILunknown command");

  	} else {

  		if (req->actual < req->length) {
  			u8 *buf = (u8 *)req->buf;
  			buf[req->actual] = 0;
  			func_cb(ep, req);
  		} else {

  			pr_err("buffer overflow");

  			fastboot_tx_write_str("FAILbuffer overflow");
  		}

  	}

  	*cmdbuf = '\0';
  	req->actual = 0;
  	usb_ep_queue(ep, req, 0);

  }