// SPDX-License-Identifier: GPL-2.0+
  /*
   * Copyright 2019 NXP
   */
  
  #include <asm/mach-imx/sys_proto.h>
  #include <fb_fsl.h>
  #include <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>
  #include "../lib/avb/fsl/utils.h"
  
  #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
  
  #if defined(CONFIG_FASTBOOT_LOCK)
  #include "fastboot_lock_unlock.h"
  #endif
  
  #ifdef CONFIG_IMX_TRUSTY_OS
  #include "u-boot/sha256.h"
  #include <trusty/libtipc.h>
  #endif

  #include "fb_fsl_common.h"

  #if defined (CONFIG_ARCH_IMX8) || defined (CONFIG_ARCH_IMX8M)
  #define DST_DECOMPRESS_LEN 1024*1024*32
  #endif
  
  #ifdef CONFIG_ANDROID_THINGS_SUPPORT
  #define FDT_PART_NAME "oem_bootloader"
  #else
  #define FDT_PART_NAME "dtbo"
  #endif
  
  /* Offset (in u32's) of start and end fields in the zImage header. */
  #define ZIMAGE_START_ADDR	10
  #define ZIMAGE_END_ADDR	11
  
  /* Boot metric variables */
  boot_metric metrics = {
    .bll_1 = 0,
    .ble_1 = 0,
    .kl	 = 0,
    .kd	 = 0,
    .avb	 = 0,
    .odt	 = 0,
    .sw	 = 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;
  }
  
  
  #if defined(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");

  #endif
  
  #if defined(CONFIG_FLASH_MCUFIRMWARE_SUPPORT) && defined(CONFIG_ARCH_IMX8M)
  static int do_bootmcu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  {
  	int ret;
  	size_t out_num_read;

  	void *mcu_base_addr = (void *)MCU_BOOTROM_BASE_ADDR;

  	char command[32];
  
  	ret = read_from_partition_multi(FASTBOOT_MCU_FIRMWARE_PARTITION,

  			0, ANDROID_MCU_FIRMWARE_SIZE, (void *)mcu_base_addr, &out_num_read);

  	if ((ret != 0) || (out_num_read != ANDROID_MCU_FIRMWARE_SIZE)) {

  		printf("Read MCU images failed!
  ");

  		return 1;
  	} else {

  		printf("run command: 'bootaux 0x%x'
  ",(unsigned int)(ulong)mcu_base_addr);

  		sprintf(command, "bootaux 0x%x", (unsigned int)(ulong)mcu_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 'mcu_os' partition, only support images run from TCM"

  );
  #endif
  
  #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;
  #ifdef CONFIG_ANDROID_AB_SUPPORT
  	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;
  	}
  #else
  	system_part_name = FASTBOOT_PARTITION_SYSTEM;
  #endif
  
  	struct fastboot_ptentry *ptentry = fastboot_flash_find_ptn(system_part_name);
  	if(ptentry != NULL) {

  		char bootargs_3rd[ANDR_BOOT_ARGS_SIZE] = {'\0'};

  		if (append_root) {
  			u32 dev_no = mmc_map_to_kernel_blk(mmc_get_env_dev());

  			sprintf(bootargs_3rd, "root=/dev/mmcblk%dp%d ",

  					dev_no,
  					ptentry->partition_index);

  		}

  		strcat(bootargs_3rd, "rootwait");
  
  		/* for standard android, recovery ramdisk will be used anyway, to
  		 * boot up Android, "androidboot.force_normal_boot=1" is needed */
  #ifndef CONFIG_ANDROID_AUTO_SUPPORT
  			strcat(bootargs_3rd, " androidboot.force_normal_boot=1");
  #endif

  		env_set("bootargs_3rd", bootargs_3rd);
  	} else {
  		printf("Can't find partition: %s
  ", system_part_name);
  		fastboot_flash_dump_ptn();
  	}
  }
  #endif
  
  #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
  #if defined(CONFIG_DUAL_BOOTLOADER) && defined(CONFIG_AVB_ATX)
  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 /* CONFIG_DUAL_BOOTLOADER && CONFIG_AVB_ATX */
  
  int trusty_setbootparameter(struct andr_img_hdr *hdr, AvbABFlowResult avb_result,
  			    AvbSlotVerifyData *avb_out_data) {
  #if defined(CONFIG_DUAL_BOOTLOADER) && defined(CONFIG_AVB_ATX)
  	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 boot_key_hash[AVB_SHA256_DIGEST_SIZE];
  #ifdef CONFIG_AVB_ATX
  	if (fsl_read_permanent_attributes_hash(&fsl_avb_atx_ops, boot_key_hash)) {
  		printf("ERROR - failed to read permanent attributes hash for keymaster
  ");
  		memset(boot_key_hash, 0, AVB_SHA256_DIGEST_SIZE);
  	}
  #else
  	uint8_t public_key_buf[AVB_MAX_BUFFER_LENGTH];
  	if (trusty_read_vbmeta_public_key(public_key_buf,
  						AVB_MAX_BUFFER_LENGTH) != 0) {
  		printf("ERROR - failed to read public key for keymaster
  ");
  		memset(boot_key_hash, 0, AVB_SHA256_DIGEST_SIZE);
  	} else
  		sha256_csum_wd((unsigned char *)public_key_buf, AVB_SHA256_DIGEST_SIZE,
  				(unsigned char *)boot_key_hash, CHUNKSZ_SHA256);
  #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 */
  #if defined(CONFIG_DUAL_BOOTLOADER) && defined(CONFIG_AVB_ATX)
  	if (vbh_calculate(vbh, avb_out_data)) {
  		ret = -1;
  		goto fail;
  	}
  
  	trusty_set_boot_params(os_ver_km, os_lvl_km, vbstatus, lock,
  			       boot_key_hash, AVB_SHA256_DIGEST_SIZE,
  			       vbh, AVB_SHA256_DIGEST_SIZE);
  #else
  	trusty_set_boot_params(os_ver_km, os_lvl_km, vbstatus, lock,
  			       boot_key_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)
  {
  	bool ptn_find;
  
  #if defined(CONFIG_ANDROID_THINGS_SUPPORT)
  	ptn_find = fastboot_flash_find_ptn("oem_bootloader_a") &&
  		fastboot_flash_find_ptn("oem_bootloader_b");
  #elif defined(CONFIG_ANDROID_AB_SUPPORT)
  	ptn_find = fastboot_flash_find_ptn("dtbo_a") &&
  		fastboot_flash_find_ptn("dtbo_b");
  #else
  	ptn_find = fastboot_flash_find_ptn("dtbo");
  #endif
  
  	if (ptn_find)
  		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_SYSTEM_RAMDISK_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
  #ifndef CONFIG_SYSTEM_RAMDISK_SUPPORT
  	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);
  	}
  #else /* CONFIG_SYSTEM_RAMDISK_SUPPORT defined */
  	avb_result = avb_single_flow(&fsl_avb_ab_ops, requested_partitions_boot, allow_fail,
  			AVB_HASHTREE_ERROR_MODE_RESTART, &avb_out_data);
  #endif /*CONFIG_SYSTEM_RAMDISK_SUPPORT*/
  #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);
  
  	/* Reboot if current slot is not bootable. */
  	if (avb_result == AVB_AB_FLOW_RESULT_ERROR_NO_BOOTABLE_SLOTS) {
  		printf("boota: slot verify fail!
  ");
  		do_reset(NULL, 0, 0, NULL);
  	}
  #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_SYSTEM_RAMDISK_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.flash.locked=1 androidboot.slot_suffix=%s ",
  					avb_out_data->ab_suffix);

  		} else {
  			snprintf(bootargs_sec, sizeof(bootargs_sec),

  					"androidboot.verifiedbootstate=orange androidboot.flash.locked=0 androidboot.slot_suffix=%s ",
  					avb_out_data->ab_suffix);

  		}

  #ifdef CONFIG_ANDROID_AUTO_SUPPORT
  		strcat(bootargs_sec, avb_out_data->cmdline);
  #else
  		strcat(bootargs_sec, strstr(avb_out_data->cmdline, "androidboot"));
  #endif

  		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);

  #if !defined(CONFIG_SYSTEM_RAMDISK_SUPPORT) || !defined(CONFIG_ANDROID_AUTO_SUPPORT)
  	memcpy((void *)(ulong)hdr->ramdisk_addr, (void *)(ulong)hdr + hdr->page_size
  			+ ALIGN(hdr->kernel_size, hdr->page_size), hdr->ramdisk_size);
  #else

  	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);

  #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_SYSTEM_RAMDISK_SUPPORT) /* It means boot.img(recovery) do not include dtb, it need load dtb from partition */
  		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 /* recovery.img include dts while boot.img use dtbo */
  		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);

  /* when CONFIG_SYSTEM_RAMDISK_SUPPORT is enabled and it's for Android Auto, if it's not recovery mode
   * do not pass ramdisk addr*/
  #if defined(CONFIG_SYSTEM_RAMDISK_SUPPORT) && defined(CONFIG_ANDROID_AUTO_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();

  	/* lock the boot state so linux can't use some hwcrypto commands. */
  	hwcrypto_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);
  #if defined(CONFIG_FASTBOOT_LOCK)
  		int verifyresult = -1;
  #endif
  
  #if defined(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 */