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

  /*

   * (C) Copyright 2008 Semihalf
   *

   * (C) Copyright 2000-2005

   * Wolfgang Denk, DENX Software Engineering, wd@denx.de.

   ********************************************************************
   * NOTE: This header file defines an interface to U-Boot. Including
   * this (unmodified) header file in another file is considered normal
   * use of U-Boot, and does *not* fall under the heading of "derived
   * work".
   ********************************************************************

   */
  
  #ifndef __IMAGE_H__
  #define __IMAGE_H__

  #include "compiler.h"

  #include <asm/byteorder.h>

  #include <stdbool.h>

  /* Define this to avoid #ifdefs later on */
  struct lmb;

  struct fdt_region;

  #ifdef USE_HOSTCC

  #include <sys/types.h>

  
  /* new uImage format support enabled on host */

  #define IMAGE_ENABLE_FIT	1
  #define IMAGE_ENABLE_OF_LIBFDT	1

  #define CONFIG_FIT_VERBOSE	1 /* enable fit_format_{error,warning}() */

  #define CONFIG_FIT_ENABLE_RSASSA_PSS_SUPPORT 1

  #define CONFIG_FIT_ENABLE_SHA256_SUPPORT

  #define CONFIG_SHA1
  #define CONFIG_SHA256

  #define IMAGE_ENABLE_IGNORE	0

  #define IMAGE_INDENT_STRING	""

  #else
  
  #include <lmb.h>

  #include <asm/u-boot.h>

  #include <command.h>

  /* Take notice of the 'ignore' property for hashes */
  #define IMAGE_ENABLE_IGNORE	1

  #define IMAGE_INDENT_STRING	"   "

  #define IMAGE_ENABLE_FIT	CONFIG_IS_ENABLED(FIT)
  #define IMAGE_ENABLE_OF_LIBFDT	CONFIG_IS_ENABLED(OF_LIBFDT)

  #endif /* USE_HOSTCC */

  #if IMAGE_ENABLE_FIT

  #include <hash.h>

  #include <linux/libfdt.h>

  #include <fdt_support.h>

  # ifdef CONFIG_SPL_BUILD

  #  ifdef CONFIG_SPL_CRC32_SUPPORT
  #   define IMAGE_ENABLE_CRC32	1
  #  endif
  #  ifdef CONFIG_SPL_MD5_SUPPORT
  #   define IMAGE_ENABLE_MD5	1
  #  endif
  #  ifdef CONFIG_SPL_SHA1_SUPPORT
  #   define IMAGE_ENABLE_SHA1	1
  #  endif

  # else

  #  define IMAGE_ENABLE_CRC32	1
  #  define IMAGE_ENABLE_MD5	1
  #  define IMAGE_ENABLE_SHA1	1
  # endif

  #ifndef IMAGE_ENABLE_CRC32
  #define IMAGE_ENABLE_CRC32	0
  #endif
  
  #ifndef IMAGE_ENABLE_MD5
  #define IMAGE_ENABLE_MD5	0
  #endif
  
  #ifndef IMAGE_ENABLE_SHA1
  #define IMAGE_ENABLE_SHA1	0
  #endif

  #if defined(CONFIG_FIT_ENABLE_SHA256_SUPPORT) || \
  	defined(CONFIG_SPL_SHA256_SUPPORT)

  #define IMAGE_ENABLE_SHA256	1
  #else

  #define IMAGE_ENABLE_SHA256	0
  #endif

  #endif /* IMAGE_ENABLE_FIT */

  #ifdef CONFIG_SYS_BOOT_GET_CMDLINE
  # define IMAGE_BOOT_GET_CMDLINE		1
  #else
  # define IMAGE_BOOT_GET_CMDLINE		0
  #endif
  
  #ifdef CONFIG_OF_BOARD_SETUP
  # define IMAGE_OF_BOARD_SETUP		1
  #else
  # define IMAGE_OF_BOARD_SETUP		0
  #endif
  
  #ifdef CONFIG_OF_SYSTEM_SETUP
  # define IMAGE_OF_SYSTEM_SETUP	1
  #else
  # define IMAGE_OF_SYSTEM_SETUP	0
  #endif

  extern ulong image_load_addr;		/* Default Load Address */
  extern ulong image_save_addr;		/* Default Save Address */
  extern ulong image_save_size;		/* Default Save Size */

  enum ih_category {
  	IH_ARCH,
  	IH_COMP,
  	IH_OS,
  	IH_TYPE,
  
  	IH_COUNT,
  };

  /*
   * Operating System Codes

   *
   * The following are exposed to uImage header.

   * New IDs *MUST* be appended at the end of the list and *NEVER*
   * inserted for backward compatibility.

   */

  enum {
  	IH_OS_INVALID		= 0,	/* Invalid OS	*/
  	IH_OS_OPENBSD,			/* OpenBSD	*/
  	IH_OS_NETBSD,			/* NetBSD	*/
  	IH_OS_FREEBSD,			/* FreeBSD	*/
  	IH_OS_4_4BSD,			/* 4.4BSD	*/
  	IH_OS_LINUX,			/* Linux	*/
  	IH_OS_SVR4,			/* SVR4		*/
  	IH_OS_ESIX,			/* Esix		*/
  	IH_OS_SOLARIS,			/* Solaris	*/
  	IH_OS_IRIX,			/* Irix		*/
  	IH_OS_SCO,			/* SCO		*/
  	IH_OS_DELL,			/* Dell		*/
  	IH_OS_NCR,			/* NCR		*/
  	IH_OS_LYNXOS,			/* LynxOS	*/
  	IH_OS_VXWORKS,			/* VxWorks	*/
  	IH_OS_PSOS,			/* pSOS		*/
  	IH_OS_QNX,			/* QNX		*/
  	IH_OS_U_BOOT,			/* Firmware	*/
  	IH_OS_RTEMS,			/* RTEMS	*/
  	IH_OS_ARTOS,			/* ARTOS	*/
  	IH_OS_UNITY,			/* Unity OS	*/
  	IH_OS_INTEGRITY,		/* INTEGRITY	*/
  	IH_OS_OSE,			/* OSE		*/
  	IH_OS_PLAN9,			/* Plan 9	*/
  	IH_OS_OPENRTOS,		/* OpenRTOS	*/

  	IH_OS_ARM_TRUSTED_FIRMWARE,     /* ARM Trusted Firmware */

  	IH_OS_TEE,			/* Trusted Execution Environment */

  	IH_OS_OPENSBI,			/* RISC-V OpenSBI */

  	IH_OS_EFI,			/* EFI Firmware (e.g. GRUB2) */

  
  	IH_OS_COUNT,
  };

  
  /*
   * CPU Architecture Codes (supported by Linux)

   *
   * The following are exposed to uImage header.

   * New IDs *MUST* be appended at the end of the list and *NEVER*
   * inserted for backward compatibility.

   */

  enum {
  	IH_ARCH_INVALID		= 0,	/* Invalid CPU	*/
  	IH_ARCH_ALPHA,			/* Alpha	*/
  	IH_ARCH_ARM,			/* ARM		*/
  	IH_ARCH_I386,			/* Intel x86	*/
  	IH_ARCH_IA64,			/* IA64		*/
  	IH_ARCH_MIPS,			/* MIPS		*/
  	IH_ARCH_MIPS64,			/* MIPS	 64 Bit */
  	IH_ARCH_PPC,			/* PowerPC	*/
  	IH_ARCH_S390,			/* IBM S390	*/
  	IH_ARCH_SH,			/* SuperH	*/
  	IH_ARCH_SPARC,			/* Sparc	*/
  	IH_ARCH_SPARC64,		/* Sparc 64 Bit */
  	IH_ARCH_M68K,			/* M68K		*/

  	IH_ARCH_NIOS,			/* Nios-32	*/

  	IH_ARCH_MICROBLAZE,		/* MicroBlaze   */
  	IH_ARCH_NIOS2,			/* Nios-II	*/
  	IH_ARCH_BLACKFIN,		/* Blackfin	*/
  	IH_ARCH_AVR32,			/* AVR32	*/
  	IH_ARCH_ST200,			/* STMicroelectronics ST200  */
  	IH_ARCH_SANDBOX,		/* Sandbox architecture (test only) */
  	IH_ARCH_NDS32,			/* ANDES Technology - NDS32  */
  	IH_ARCH_OPENRISC,		/* OpenRISC 1000  */
  	IH_ARCH_ARM64,			/* ARM64	*/
  	IH_ARCH_ARC,			/* Synopsys DesignWare ARC */
  	IH_ARCH_X86_64,			/* AMD x86_64, Intel and Via */

  	IH_ARCH_XTENSA,			/* Xtensa	*/

  	IH_ARCH_RISCV,			/* RISC-V */

  
  	IH_ARCH_COUNT,
  };

  
  /*
   * Image Types
   *
   * "Standalone Programs" are directly runnable in the environment
   *	provided by U-Boot; it is expected that (if they behave
   *	well) you can continue to work in U-Boot after return from
   *	the Standalone Program.
   * "OS Kernel Images" are usually images of some Embedded OS which
   *	will take over control completely. Usually these programs
   *	will install their own set of exception handlers, device
   *	drivers, set up the MMU, etc. - this means, that you cannot
   *	expect to re-enter U-Boot except by resetting the CPU.
   * "RAMDisk Images" are more or less just data blocks, and their
   *	parameters (address, size) are passed to an OS kernel that is
   *	being started.
   * "Multi-File Images" contain several images, typically an OS
   *	(Linux) kernel image and one or more data images like
   *	RAMDisks. This construct is useful for instance when you want
   *	to boot over the network using BOOTP etc., where the boot
   *	server provides just a single image file, but you want to get
   *	for instance an OS kernel and a RAMDisk image.
   *
   *	"Multi-File Images" start with a list of image sizes, each
   *	image size (in bytes) specified by an "uint32_t" in network
   *	byte order. This list is terminated by an "(uint32_t)0".
   *	Immediately after the terminating 0 follow the images, one by
   *	one, all aligned on "uint32_t" boundaries (size rounded up to

   *	a multiple of 4 bytes - except for the last file).

   *
   * "Firmware Images" are binary images containing firmware (like
   *	U-Boot or FPGA images) which usually will be programmed to
   *	flash memory.
   *
   * "Script files" are command sequences that will be executed by
   *	U-Boot's command interpreter; this feature is especially
   *	useful when you configure U-Boot to use a real shell (hush)

   *	as command interpreter (=> Shell Scripts).

   *
   * The following are exposed to uImage header.

   * New IDs *MUST* be appended at the end of the list and *NEVER*
   * inserted for backward compatibility.

   */

  enum {
  	IH_TYPE_INVALID		= 0,	/* Invalid Image		*/
  	IH_TYPE_STANDALONE,		/* Standalone Program		*/
  	IH_TYPE_KERNEL,			/* OS Kernel Image		*/
  	IH_TYPE_RAMDISK,		/* RAMDisk Image		*/
  	IH_TYPE_MULTI,			/* Multi-File Image		*/
  	IH_TYPE_FIRMWARE,		/* Firmware Image		*/
  	IH_TYPE_SCRIPT,			/* Script file			*/
  	IH_TYPE_FILESYSTEM,		/* Filesystem Image (any type)	*/
  	IH_TYPE_FLATDT,			/* Binary Flat Device Tree Blob	*/
  	IH_TYPE_KWBIMAGE,		/* Kirkwood Boot Image		*/
  	IH_TYPE_IMXIMAGE,		/* Freescale IMXBoot Image	*/
  	IH_TYPE_UBLIMAGE,		/* Davinci UBL Image		*/
  	IH_TYPE_OMAPIMAGE,		/* TI OMAP Config Header Image	*/
  	IH_TYPE_AISIMAGE,		/* TI Davinci AIS Image		*/
  	/* OS Kernel Image, can run from any load address */
  	IH_TYPE_KERNEL_NOLOAD,
  	IH_TYPE_PBLIMAGE,		/* Freescale PBL Boot Image	*/
  	IH_TYPE_MXSIMAGE,		/* Freescale MXSBoot Image	*/
  	IH_TYPE_GPIMAGE,		/* TI Keystone GPHeader Image	*/
  	IH_TYPE_ATMELIMAGE,		/* ATMEL ROM bootable Image	*/

  	IH_TYPE_SOCFPGAIMAGE,		/* Altera SOCFPGA CV/AV Preloader */

  	IH_TYPE_X86_SETUP,		/* x86 setup.bin Image		*/
  	IH_TYPE_LPC32XXIMAGE,		/* x86 setup.bin Image		*/
  	IH_TYPE_LOADABLE,		/* A list of typeless images	*/
  	IH_TYPE_RKIMAGE,		/* Rockchip Boot Image		*/
  	IH_TYPE_RKSD,			/* Rockchip SD card		*/
  	IH_TYPE_RKSPI,			/* Rockchip SPI image		*/
  	IH_TYPE_ZYNQIMAGE,		/* Xilinx Zynq Boot Image */
  	IH_TYPE_ZYNQMPIMAGE,		/* Xilinx ZynqMP Boot Image */

  	IH_TYPE_ZYNQMPBIF,		/* Xilinx ZynqMP Boot Image (bif) */

  	IH_TYPE_FPGA,			/* FPGA Image */

  	IH_TYPE_VYBRIDIMAGE,	/* VYBRID .vyb Image */

  	IH_TYPE_TEE,            /* Trusted Execution Environment OS Image */

  	IH_TYPE_FIRMWARE_IVT,		/* Firmware Image with HABv4 IVT */

  	IH_TYPE_PMMC,            /* TI Power Management Micro-Controller Firmware */

  	IH_TYPE_STM32IMAGE,		/* STMicroelectronics STM32 Image */

  	IH_TYPE_SOCFPGAIMAGE_V1,	/* Altera SOCFPGA A10 Preloader	*/

  	IH_TYPE_MTKIMAGE,		/* MediaTek BootROM loadable Image */

  	IH_TYPE_IMX8MIMAGE,		/* Freescale IMX8MBoot Image	*/
  	IH_TYPE_IMX8IMAGE,		/* Freescale IMX8Boot Image	*/

  	IH_TYPE_COPRO,			/* Coprocessor Image for remoteproc*/

  
  	IH_TYPE_COUNT,			/* Number of image types */
  };

  /*
   * Compression Types

   *
   * The following are exposed to uImage header.

   * New IDs *MUST* be appended at the end of the list and *NEVER*
   * inserted for backward compatibility.

   */

  enum {
  	IH_COMP_NONE		= 0,	/*  No	 Compression Used	*/
  	IH_COMP_GZIP,			/* gzip	 Compression Used	*/
  	IH_COMP_BZIP2,			/* bzip2 Compression Used	*/
  	IH_COMP_LZMA,			/* lzma  Compression Used	*/
  	IH_COMP_LZO,			/* lzo   Compression Used	*/
  	IH_COMP_LZ4,			/* lz4   Compression Used	*/
  
  	IH_COMP_COUNT,
  };

  #define LZ4F_MAGIC	0x184D2204	/* LZ4 Magic Number		*/

  #define IH_MAGIC	0x27051956	/* Image Magic Number		*/
  #define IH_NMLEN		32	/* Image Name Length		*/

  /* Reused from common.h */
  #define ROUND(a, b)		(((a) + (b) - 1) & ~((b) - 1))

  /*

   * Legacy format image header,
   * all data in network byte order (aka natural aka bigendian).

   */

  typedef struct image_header {

  	uint32_t	ih_magic;	/* Image Header Magic Number	*/
  	uint32_t	ih_hcrc;	/* Image Header CRC Checksum	*/
  	uint32_t	ih_time;	/* Image Creation Timestamp	*/
  	uint32_t	ih_size;	/* Image Data Size		*/
  	uint32_t	ih_load;	/* Data	 Load  Address		*/
  	uint32_t	ih_ep;		/* Entry Point Address		*/
  	uint32_t	ih_dcrc;	/* Image Data CRC Checksum	*/

  	uint8_t		ih_os;		/* Operating System		*/
  	uint8_t		ih_arch;	/* CPU architecture		*/
  	uint8_t		ih_type;	/* Image Type			*/
  	uint8_t		ih_comp;	/* Compression Type		*/
  	uint8_t		ih_name[IH_NMLEN];	/* Image Name		*/
  } image_header_t;

  typedef struct image_info {
  	ulong		start, end;		/* start/end of blob */
  	ulong		image_start, image_len; /* start of image within blob, len of image */
  	ulong		load;			/* load addr for the image */
  	uint8_t		comp, type, os;		/* compression, type of image, os type */

  	uint8_t		arch;			/* CPU architecture */

  } image_info_t;

  /*

   * Legacy and FIT format headers used by do_bootm() and do_bootm_<os>()
   * routines.
   */
  typedef struct bootm_headers {
  	/*
  	 * Legacy os image header, if it is a multi component image

  	 * then boot_get_ramdisk() and get_fdt() will attempt to get

  	 * data from second and third component accordingly.
  	 */

  	image_header_t	*legacy_hdr_os;		/* image header pointer */
  	image_header_t	legacy_hdr_os_copy;	/* header copy */

  	ulong		legacy_hdr_valid;

  #if IMAGE_ENABLE_FIT

  	const char	*fit_uname_cfg;	/* configuration node unit name */

  	void		*fit_hdr_os;	/* os FIT image header */

  	const char	*fit_uname_os;	/* os subimage node unit name */

  	int		fit_noffset_os;	/* os subimage node offset */

  
  	void		*fit_hdr_rd;	/* init ramdisk FIT image header */

  	const char	*fit_uname_rd;	/* init ramdisk subimage node unit name */
  	int		fit_noffset_rd;	/* init ramdisk subimage node offset */

  	void		*fit_hdr_fdt;	/* FDT blob FIT image header */

  	const char	*fit_uname_fdt;	/* FDT blob subimage node unit name */
  	int		fit_noffset_fdt;/* FDT blob subimage node offset */

  
  	void		*fit_hdr_setup;	/* x86 setup FIT image header */
  	const char	*fit_uname_setup; /* x86 setup subimage node name */
  	int		fit_noffset_setup;/* x86 setup subimage node offset */

  #endif

  #ifndef USE_HOSTCC

  	image_info_t	os;		/* os image info */

  	ulong		ep;		/* entry point of OS */

  	ulong		rd_start, rd_end;/* ramdisk start/end */

  	char		*ft_addr;	/* flat dev tree address */

  	ulong		ft_len;		/* length of flat device tree */

  	ulong		initrd_start;
  	ulong		initrd_end;
  	ulong		cmdline_start;
  	ulong		cmdline_end;
  	bd_t		*kbd;
  #endif

  	int		verify;		/* env_get("verify")[0] != 'n' */

  
  #define	BOOTM_STATE_START	(0x00000001)

  #define	BOOTM_STATE_FINDOS	(0x00000002)
  #define	BOOTM_STATE_FINDOTHER	(0x00000004)
  #define	BOOTM_STATE_LOADOS	(0x00000008)
  #define	BOOTM_STATE_RAMDISK	(0x00000010)
  #define	BOOTM_STATE_FDT		(0x00000020)
  #define	BOOTM_STATE_OS_CMDLINE	(0x00000040)
  #define	BOOTM_STATE_OS_BD_T	(0x00000080)
  #define	BOOTM_STATE_OS_PREP	(0x00000100)

  #define	BOOTM_STATE_OS_FAKE_GO	(0x00000200)	/* 'Almost' run the OS */
  #define	BOOTM_STATE_OS_GO	(0x00000400)

  	int		state;

  #ifdef CONFIG_LMB

  	struct lmb	lmb;		/* for memory mgmt */
  #endif

  } bootm_headers_t;

  extern bootm_headers_t images;

  /*

   * Some systems (for example LWMON) have very short watchdog periods;
   * we must make sure to split long operations like memmove() or

   * checksum calculations into reasonable chunks.

   */

  #ifndef CHUNKSZ

  #define CHUNKSZ (64 * 1024)

  #endif
  
  #ifndef CHUNKSZ_CRC32
  #define CHUNKSZ_CRC32 (64 * 1024)
  #endif
  
  #ifndef CHUNKSZ_MD5
  #define CHUNKSZ_MD5 (64 * 1024)
  #endif
  
  #ifndef CHUNKSZ_SHA1
  #define CHUNKSZ_SHA1 (64 * 1024)
  #endif

  #define uimage_to_cpu(x)		be32_to_cpu(x)
  #define cpu_to_uimage(x)		cpu_to_be32(x)

  /*
   * Translation table for entries of a specific type; used by
   * get_table_entry_id() and get_table_entry_name().
   */
  typedef struct table_entry {
  	int	id;
  	char	*sname;		/* short (input) name to find table entry */
  	char	*lname;		/* long (output) name to print for messages */
  } table_entry_t;
  
  /*
   * get_table_entry_id() scans the translation table trying to find an
   * entry that matches the given short name. If a matching entry is
   * found, it's id is returned to the caller.
   */

  int get_table_entry_id(const table_entry_t *table,

  		const char *table_name, const char *name);
  /*
   * get_table_entry_name() scans the translation table trying to find
   * an entry that matches the given id. If a matching entry is found,
   * its long name is returned to the caller.
   */

  char *get_table_entry_name(const table_entry_t *table, char *msg, int id);

  const char *genimg_get_os_name(uint8_t os);

  
  /**
   * genimg_get_os_short_name() - get the short name for an OS
   *
   * @param os	OS (IH_OS_...)
   * @return OS short name, or "unknown" if unknown
   */
  const char *genimg_get_os_short_name(uint8_t comp);

  const char *genimg_get_arch_name(uint8_t arch);

  
  /**
   * genimg_get_arch_short_name() - get the short name for an architecture
   *
   * @param arch	Architecture type (IH_ARCH_...)
   * @return architecture short name, or "unknown" if unknown
   */
  const char *genimg_get_arch_short_name(uint8_t arch);

  const char *genimg_get_type_name(uint8_t type);

  
  /**
   * genimg_get_type_short_name() - get the short name for an image type
   *
   * @param type	Image type (IH_TYPE_...)
   * @return image short name, or "unknown" if unknown
   */
  const char *genimg_get_type_short_name(uint8_t type);

  const char *genimg_get_comp_name(uint8_t comp);

  
  /**
   * genimg_get_comp_short_name() - get the short name for a compression method
   *
   * @param comp	compression method (IH_COMP_...)
   * @return compression method short name, or "unknown" if unknown
   */
  const char *genimg_get_comp_short_name(uint8_t comp);

  /**
   * genimg_get_cat_name() - Get the name of an item in a category
   *
   * @category:	Category of item
   * @id:		Item ID
   * @return name of item, or "Unknown ..." if unknown
   */
  const char *genimg_get_cat_name(enum ih_category category, uint id);
  
  /**
   * genimg_get_cat_short_name() - Get the short name of an item in a category
   *
   * @category:	Category of item
   * @id:		Item ID
   * @return short name of item, or "Unknown ..." if unknown
   */
  const char *genimg_get_cat_short_name(enum ih_category category, uint id);
  
  /**
   * genimg_get_cat_count() - Get the number of items in a category
   *
   * @category:	Category to check
   * @return the number of items in the category (IH_xxx_COUNT)
   */
  int genimg_get_cat_count(enum ih_category category);
  
  /**
   * genimg_get_cat_desc() - Get the description of a category
   *
   * @return the description of a category, e.g. "architecture". This
   * effectively converts the enum to a string.
   */
  const char *genimg_get_cat_desc(enum ih_category category);

  int genimg_get_os_id(const char *name);
  int genimg_get_arch_id(const char *name);
  int genimg_get_type_id(const char *name);
  int genimg_get_comp_id(const char *name);
  void genimg_print_size(uint32_t size);

  #if defined(CONFIG_TIMESTAMP) || defined(CONFIG_CMD_DATE) || \
  	defined(USE_HOSTCC)
  #define IMAGE_ENABLE_TIMESTAMP 1
  #else
  #define IMAGE_ENABLE_TIMESTAMP 0
  #endif
  void genimg_print_time(time_t timestamp);

  /* What to do with a image load address ('load = <> 'in the FIT) */
  enum fit_load_op {
  	FIT_LOAD_IGNORED,	/* Ignore load address */
  	FIT_LOAD_OPTIONAL,	/* Can be provided, but optional */

  	FIT_LOAD_OPTIONAL_NON_ZERO,	/* Optional, a value of 0 is ignored */

  	FIT_LOAD_REQUIRED,	/* Must be provided */
  };

  int boot_get_setup(bootm_headers_t *images, uint8_t arch, ulong *setup_start,
  		   ulong *setup_len);

  #ifndef USE_HOSTCC
  /* Image format types, returned by _get_format() routine */
  #define IMAGE_FORMAT_INVALID	0x00

  #if defined(CONFIG_LEGACY_IMAGE_FORMAT)

  #define IMAGE_FORMAT_LEGACY	0x01	/* legacy image_header based format */

  #endif

  #define IMAGE_FORMAT_FIT	0x02	/* new, libfdt based format */

  #define IMAGE_FORMAT_ANDROID	0x03	/* Android boot image */

  ulong genimg_get_kernel_addr_fit(char * const img_addr,
  			         const char **fit_uname_config,
  			         const char **fit_uname_kernel);

  ulong genimg_get_kernel_addr(char * const img_addr);

  int genimg_get_format(const void *img_addr);

  int genimg_has_config(bootm_headers_t *images);

  int boot_get_fpga(int argc, char * const argv[], bootm_headers_t *images,
  		uint8_t arch, const ulong *ld_start, ulong * const ld_len);

  int boot_get_ramdisk(int argc, char * const argv[], bootm_headers_t *images,

  		uint8_t arch, ulong *rd_start, ulong *rd_end);

  
  /**
   * boot_get_loadable - routine to load a list of binaries to memory
   * @argc: Ignored Argument
   * @argv: Ignored Argument
   * @images: pointer to the bootm images structure
   * @arch: expected architecture for the image
   * @ld_start: Ignored Argument
   * @ld_len: Ignored Argument
   *
   * boot_get_loadable() will take the given FIT configuration, and look
   * for a field named "loadables".  Loadables, is a list of elements in
   * the FIT given as strings.  exe:

   *   loadables = "linux_kernel", "fdt-2";

   * this function will attempt to parse each string, and load the
   * corresponding element from the FIT into memory.  Once placed,
   * no aditional actions are taken.
   *
   * @return:
   *     0, if only valid images or no images are found
   *     error code, if an error occurs during fit_image_load
   */
  int boot_get_loadable(int argc, char * const argv[], bootm_headers_t *images,
  		uint8_t arch, const ulong *ld_start, ulong * const ld_len);
  #endif /* !USE_HOSTCC */

  int boot_get_setup_fit(bootm_headers_t *images, uint8_t arch,
  		       ulong *setup_start, ulong *setup_len);

  /**

   * boot_get_fdt_fit() - load a DTB from a FIT file (applying overlays)
   *
   * This deals with all aspects of loading an DTB from a FIT.
   * The correct base image based on configuration will be selected, and
   * then any overlays specified will be applied (as present in fit_uname_configp).
   *
   * @param images	Boot images structure
   * @param addr		Address of FIT in memory
   * @param fit_unamep	On entry this is the requested image name

   *			(e.g. "kernel") or NULL to use the default. On exit

   *			points to the selected image name
   * @param fit_uname_configp	On entry this is the requested configuration

   *			name (e.g. "conf-1") or NULL to use the default. On

   *			exit points to the selected configuration name.
   * @param arch		Expected architecture (IH_ARCH_...)
   * @param datap		Returns address of loaded image
   * @param lenp		Returns length of loaded image
   *
   * @return node offset of base image, or -ve error code on error
   */
  int boot_get_fdt_fit(bootm_headers_t *images, ulong addr,
  		   const char **fit_unamep, const char **fit_uname_configp,
  		   int arch, ulong *datap, ulong *lenp);
  
  /**

   * fit_image_load() - load an image from a FIT
   *
   * This deals with all aspects of loading an image from a FIT, including
   * selecting the right image based on configuration, verifying it, printing
   * out progress messages, checking the type/arch/os and optionally copying it
   * to the right load address.
   *

   * The property to look up is defined by image_type.
   *

   * @param images	Boot images structure

   * @param addr		Address of FIT in memory
   * @param fit_unamep	On entry this is the requested image name

   *			(e.g. "kernel") or NULL to use the default. On exit

   *			points to the selected image name

   * @param fit_uname_configp	On entry this is the requested configuration

   *			name (e.g. "conf-1") or NULL to use the default. On

   *			exit points to the selected configuration name.

   * @param arch		Expected architecture (IH_ARCH_...)
   * @param image_type	Required image type (IH_TYPE_...). If this is
   *			IH_TYPE_KERNEL then we allow IH_TYPE_KERNEL_NOLOAD
   *			also.
   * @param bootstage_id	ID of starting bootstage to use for progress updates.
   *			This will be added to the BOOTSTAGE_SUB values when
   *			calling bootstage_mark()
   * @param load_op	Decribes what to do with the load address
   * @param datap		Returns address of loaded image
   * @param lenp		Returns length of loaded image

   * @return node offset of image, or -ve error code on error

   */

  int fit_image_load(bootm_headers_t *images, ulong addr,

  		   const char **fit_unamep, const char **fit_uname_configp,

  		   int arch, int image_type, int bootstage_id,
  		   enum fit_load_op load_op, ulong *datap, ulong *lenp);

  /**
   * image_source_script() - Execute a script
   *
   * Executes a U-Boot script at a particular address in memory. The script should
   * have a header (FIT or legacy) with the script type (IH_TYPE_SCRIPT).
   *
   * @addr: Address of script
   * @fit_uname: FIT subimage name
   * @return result code (enum command_ret_t)
   */
  int image_source_script(ulong addr, const char *fit_uname);

  #ifndef USE_HOSTCC

  /**
   * fit_get_node_from_config() - Look up an image a FIT by type
   *

   * This looks in the selected conf- node (images->fit_uname_cfg) for a

   * particular image type (e.g. "kernel") and then finds the image that is
   * referred to.
   *
   * For example, for something like:
   *
   * images {

   *	kernel {

   *		...
   *	};
   * };
   * configurations {

   *	conf-1 {
   *		kernel = "kernel";

   *	};
   * };
   *
   * the function will return the node offset of the kernel@1 node, assuming

   * that conf-1 is the chosen configuration.

   *
   * @param images	Boot images structure
   * @param prop_name	Property name to look up (FIT_..._PROP)
   * @param addr		Address of FIT in memory
   */
  int fit_get_node_from_config(bootm_headers_t *images, const char *prop_name,
  			ulong addr);

  int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
  		 bootm_headers_t *images,
  		 char **of_flat_tree, ulong *of_size);

  void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob);

  int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size);

  int boot_ramdisk_high(struct lmb *lmb, ulong rd_data, ulong rd_len,

  		  ulong *initrd_start, ulong *initrd_end);

  int boot_get_cmdline(struct lmb *lmb, ulong *cmd_start, ulong *cmd_end);

  #ifdef CONFIG_SYS_BOOT_GET_KBD

  int boot_get_kbd(struct lmb *lmb, bd_t **kbd);

  #endif /* CONFIG_SYS_BOOT_GET_KBD */

  #endif /* !USE_HOSTCC */

  /*******************************************************************/
  /* Legacy format specific code (prefixed with image_) */
  /*******************************************************************/

  static inline uint32_t image_get_header_size(void)

  {

  	return (sizeof(image_header_t));

  }
  
  #define image_get_hdr_l(f) \

  	static inline uint32_t image_get_##f(const image_header_t *hdr) \

  	{ \

  		return uimage_to_cpu(hdr->ih_##f); \

  	}

  image_get_hdr_l(magic)		/* image_get_magic */
  image_get_hdr_l(hcrc)		/* image_get_hcrc */
  image_get_hdr_l(time)		/* image_get_time */
  image_get_hdr_l(size)		/* image_get_size */
  image_get_hdr_l(load)		/* image_get_load */
  image_get_hdr_l(ep)		/* image_get_ep */
  image_get_hdr_l(dcrc)		/* image_get_dcrc */

  
  #define image_get_hdr_b(f) \

  	static inline uint8_t image_get_##f(const image_header_t *hdr) \

  	{ \
  		return hdr->ih_##f; \
  	}

  image_get_hdr_b(os)		/* image_get_os */
  image_get_hdr_b(arch)		/* image_get_arch */
  image_get_hdr_b(type)		/* image_get_type */
  image_get_hdr_b(comp)		/* image_get_comp */

  static inline char *image_get_name(const image_header_t *hdr)

  {
  	return (char *)hdr->ih_name;
  }

  static inline uint32_t image_get_data_size(const image_header_t *hdr)

  {

  	return image_get_size(hdr);

  }

  
  /**
   * image_get_data - get image payload start address
   * @hdr: image header
   *
   * image_get_data() returns address of the image payload. For single
   * component images it is image data start. For multi component
   * images it points to the null terminated table of sub-images sizes.
   *
   * returns:
   *     image payload data start address
   */

  static inline ulong image_get_data(const image_header_t *hdr)

  {

  	return ((ulong)hdr + image_get_header_size());

  }

  static inline uint32_t image_get_image_size(const image_header_t *hdr)

  {

  	return (image_get_size(hdr) + image_get_header_size());

  }

  static inline ulong image_get_image_end(const image_header_t *hdr)

  {

  	return ((ulong)hdr + image_get_image_size(hdr));

  }
  
  #define image_set_hdr_l(f) \
  	static inline void image_set_##f(image_header_t *hdr, uint32_t val) \
  	{ \

  		hdr->ih_##f = cpu_to_uimage(val); \

  	}

  image_set_hdr_l(magic)		/* image_set_magic */
  image_set_hdr_l(hcrc)		/* image_set_hcrc */
  image_set_hdr_l(time)		/* image_set_time */
  image_set_hdr_l(size)		/* image_set_size */
  image_set_hdr_l(load)		/* image_set_load */
  image_set_hdr_l(ep)		/* image_set_ep */
  image_set_hdr_l(dcrc)		/* image_set_dcrc */

  
  #define image_set_hdr_b(f) \
  	static inline void image_set_##f(image_header_t *hdr, uint8_t val) \
  	{ \
  		hdr->ih_##f = val; \
  	}

  image_set_hdr_b(os)		/* image_set_os */
  image_set_hdr_b(arch)		/* image_set_arch */
  image_set_hdr_b(type)		/* image_set_type */
  image_set_hdr_b(comp)		/* image_set_comp */

  static inline void image_set_name(image_header_t *hdr, const char *name)

  {

  	strncpy(image_get_name(hdr), name, IH_NMLEN);

  }

  int image_check_hcrc(const image_header_t *hdr);
  int image_check_dcrc(const image_header_t *hdr);

  #ifndef USE_HOSTCC

  ulong env_get_bootm_low(void);
  phys_size_t env_get_bootm_size(void);
  phys_size_t env_get_bootm_mapsize(void);

  #endif

  void memmove_wd(void *to, void *from, size_t len, ulong chunksz);

  static inline int image_check_magic(const image_header_t *hdr)

  {

  	return (image_get_magic(hdr) == IH_MAGIC);

  }

  static inline int image_check_type(const image_header_t *hdr, uint8_t type)

  {

  	return (image_get_type(hdr) == type);

  }

  static inline int image_check_arch(const image_header_t *hdr, uint8_t arch)

  {

  	return (image_get_arch(hdr) == arch) ||
  		(image_get_arch(hdr) == IH_ARCH_ARM && arch == IH_ARCH_ARM64);

  }

  static inline int image_check_os(const image_header_t *hdr, uint8_t os)

  {

  	return (image_get_os(hdr) == os);

  }

  ulong image_multi_count(const image_header_t *hdr);
  void image_multi_getimg(const image_header_t *hdr, ulong idx,

  			ulong *data, ulong *len);

  void image_print_contents(const void *hdr);

  #ifndef USE_HOSTCC

  static inline int image_check_target_arch(const image_header_t *hdr)

  {

  #ifndef IH_ARCH_DEFAULT
  # error "please define IH_ARCH_DEFAULT in your arch asm/u-boot.h"

  #endif

  	return image_check_arch(hdr, IH_ARCH_DEFAULT);

  }

  #endif /* USE_HOSTCC */

  /**

   * image_decomp() - decompress an image
   *
   * @comp:	Compression algorithm that is used (IH_COMP_...)
   * @load:	Destination load address in U-Boot memory
   * @image_start Image start address (where we are decompressing from)
   * @type:	OS type (IH_OS_...)
   * @load_bug:	Place to decompress to
   * @image_buf:	Address to decompress from
   * @image_len:	Number of bytes in @image_buf to decompress
   * @unc_len:	Available space for decompression
   * @return 0 if OK, -ve on error (BOOTM_ERR_...)
   */
  int image_decomp(int comp, ulong load, ulong image_start, int type,
  		 void *load_buf, void *image_buf, ulong image_len,
  		 uint unc_len, ulong *load_end);
  
  /**

   * Set up properties in the FDT
   *
   * This sets up properties in the FDT that is to be passed to linux.
   *
   * @images:	Images information
   * @blob:	FDT to update
   * @of_size:	Size of the FDT
   * @lmb:	Points to logical memory block structure
   * @return 0 if ok, <0 on failure
   */
  int image_setup_libfdt(bootm_headers_t *images, void *blob,
  		       int of_size, struct lmb *lmb);
  
  /**
   * Set up the FDT to use for booting a kernel
   *
   * This performs ramdisk setup, sets up the FDT if required, and adds
   * paramters to the FDT if libfdt is available.
   *
   * @param images	Images information
   * @return 0 if ok, <0 on failure
   */
  int image_setup_linux(bootm_headers_t *images);

  /**
   * bootz_setup() - Extract stat and size of a Linux xImage
   *
   * @image: Address of image
   * @start: Returns start address of image
   * @end : Returns end address of image
   * @return 0 if OK, 1 if the image was not recognised
   */
  int bootz_setup(ulong image, ulong *start, ulong *end);

  /**
   * Return the correct start address and size of a Linux aarch64 Image.
   *
   * @image: Address of image
   * @start: Returns start address of image
   * @size : Returns size image

   * @force_reloc: Ignore image->ep field, always place image to RAM start

   * @return 0 if OK, 1 if the image was not recognised
   */

  int booti_setup(ulong image, ulong *relocated_addr, ulong *size,
  		bool force_reloc);

  /*******************************************************************/

  /* New uImage format specific code (prefixed with fit_) */

  /*******************************************************************/

  
  #define FIT_IMAGES_PATH		"/images"
  #define FIT_CONFS_PATH		"/configurations"

  /* hash/signature/key node */

  #define FIT_HASH_NODENAME	"hash"
  #define FIT_ALGO_PROP		"algo"
  #define FIT_VALUE_PROP		"value"

  #define FIT_IGNORE_PROP		"uboot-ignore"

  #define FIT_SIG_NODENAME	"signature"

  #define FIT_KEY_REQUIRED	"required"
  #define FIT_KEY_HINT		"key-name-hint"

  /* cipher node */
  #define FIT_CIPHER_NODENAME	"cipher"
  #define FIT_ALGO_PROP		"algo"

  /* image node */
  #define FIT_DATA_PROP		"data"

  #define FIT_DATA_POSITION_PROP	"data-position"

  #define FIT_DATA_OFFSET_PROP	"data-offset"
  #define FIT_DATA_SIZE_PROP	"data-size"

  #define FIT_TIMESTAMP_PROP	"timestamp"
  #define FIT_DESC_PROP		"description"
  #define FIT_ARCH_PROP		"arch"
  #define FIT_TYPE_PROP		"type"
  #define FIT_OS_PROP		"os"
  #define FIT_COMP_PROP		"compression"
  #define FIT_ENTRY_PROP		"entry"
  #define FIT_LOAD_PROP		"load"
  
  /* configuration node */
  #define FIT_KERNEL_PROP		"kernel"
  #define FIT_RAMDISK_PROP	"ramdisk"
  #define FIT_FDT_PROP		"fdt"

  #define FIT_LOADABLE_PROP	"loadables"

  #define FIT_DEFAULT_PROP	"default"

  #define FIT_SETUP_PROP		"setup"

  #define FIT_FPGA_PROP		"fpga"

  #define FIT_FIRMWARE_PROP	"firmware"

  #define FIT_STANDALONE_PROP	"standalone"

  #define FIT_MAX_HASH_LEN	HASH_MAX_DIGEST_SIZE

  #if IMAGE_ENABLE_FIT

  /* cmdline argument format parsing */

  int fit_parse_conf(const char *spec, ulong addr_curr,

  		ulong *addr, const char **conf_name);

  int fit_parse_subimage(const char *spec, ulong addr_curr,

  		ulong *addr, const char **image_name);

  int fit_get_subimage_count(const void *fit, int images_noffset);

  void fit_print_contents(const void *fit);
  void fit_image_print(const void *fit, int noffset, const char *p);

  
  /**
   * fit_get_end - get FIT image size
   * @fit: pointer to the FIT format image header
   *
   * returns:
   *     size of the FIT image (blob) in memory
   */

  static inline ulong fit_get_size(const void *fit)

  {

  	return fdt_totalsize(fit);

  }
  
  /**
   * fit_get_end - get FIT image end
   * @fit: pointer to the FIT format image header
   *
   * returns:
   *     end address of the FIT image (blob) in memory
   */

  ulong fit_get_end(const void *fit);

  
  /**
   * fit_get_name - get FIT node name
   * @fit: pointer to the FIT format image header
   *
   * returns:
   *     NULL, on error
   *     pointer to node name, on success
   */

  static inline const char *fit_get_name(const void *fit_hdr,

  		int noffset, int *len)
  {

  	return fdt_get_name(fit_hdr, noffset, len);

  }

  int fit_get_desc(const void *fit, int noffset, char **desc);
  int fit_get_timestamp(const void *fit, int noffset, time_t *timestamp);
  
  int fit_image_get_node(const void *fit, const char *image_uname);
  int fit_image_get_os(const void *fit, int noffset, uint8_t *os);
  int fit_image_get_arch(const void *fit, int noffset, uint8_t *arch);
  int fit_image_get_type(const void *fit, int noffset, uint8_t *type);
  int fit_image_get_comp(const void *fit, int noffset, uint8_t *comp);
  int fit_image_get_load(const void *fit, int noffset, ulong *load);
  int fit_image_get_entry(const void *fit, int noffset, ulong *entry);
  int fit_image_get_data(const void *fit, int noffset,

  				const void **data, size_t *size);

  int fit_image_get_data_offset(const void *fit, int noffset, int *data_offset);

  int fit_image_get_data_position(const void *fit, int noffset,
  				int *data_position);

  int fit_image_get_data_size(const void *fit, int noffset, int *data_size);

  int fit_image_get_data_size_unciphered(const void *fit, int noffset,
  				       size_t *data_size);

  int fit_image_get_data_and_size(const void *fit, int noffset,
  				const void **data, size_t *size);

  int fit_image_hash_get_algo(const void *fit, int noffset, char **algo);
  int fit_image_hash_get_value(const void *fit, int noffset, uint8_t **value,

  				int *value_len);

  int fit_set_timestamp(void *fit, int noffset, time_t timestamp);

  int fit_cipher_data(const char *keydir, void *keydest, void *fit,
  		    const char *comment, int require_keys,
  		    const char *engine_id, const char *cmdname);

  /**

   * fit_add_verification_data() - add verification data to FIT image nodes

   *

   * @keydir:	Directory containing keys
   * @kwydest:	FDT blob to write public key information to
   * @fit:	Pointer to the FIT format image header
   * @comment:	Comment to add to signature nodes
   * @require_keys: Mark all keys as 'required'

   * @engine_id:	Engine to use for signing

   * @cmdname:	Command name used when reporting errors

   *
   * Adds hash values for all component images in the FIT blob.
   * Hashes are calculated for all component images which have hash subnodes
   * with algorithm property set to one of the supported hash algorithms.
   *
   * Also add signatures if signature nodes are present.
   *
   * returns
   *     0, on success
   *     libfdt error code, on failure

   */

  int fit_add_verification_data(const char *keydir, void *keydest, void *fit,

  			      const char *comment, int require_keys,

  			      const char *engine_id, const char *cmdname);

  int fit_image_verify_with_data(const void *fit, int image_noffset,
  			       const void *data, size_t size);

  int fit_image_verify(const void *fit, int noffset);

  int fit_config_verify(const void *fit, int conf_noffset);

  int fit_all_image_verify(const void *fit);

  int fit_config_decrypt(const void *fit, int conf_noffset);

  int fit_image_check_os(const void *fit, int noffset, uint8_t os);
  int fit_image_check_arch(const void *fit, int noffset, uint8_t arch);
  int fit_image_check_type(const void *fit, int noffset, uint8_t type);
  int fit_image_check_comp(const void *fit, int noffset, uint8_t comp);
  int fit_check_format(const void *fit);

  int fit_conf_find_compat(const void *fit, const void *fdt);

  
  /**
   * fit_conf_get_node - get node offset for configuration of a given unit name
   * @fit: pointer to the FIT format image header
   * @conf_uname: configuration node unit name (NULL to use default)
   *
   * fit_conf_get_node() finds a configuration (within the '/configurations'
   * parent node) of a provided unit name. If configuration is found its node
   * offset is returned to the caller.
   *
   * When NULL is provided in second argument fit_conf_get_node() will search
   * for a default configuration node instead. Default configuration node unit
   * name is retrieved from FIT_DEFAULT_PROP property of the '/configurations'
   * node.
   *
   * returns:
   *     configuration node offset when found (>=0)
   *     negative number on failure (FDT_ERR_* code)
   */

  int fit_conf_get_node(const void *fit, const char *conf_uname);

  int fit_conf_get_prop_node_count(const void *fit, int noffset,
  		const char *prop_name);
  int fit_conf_get_prop_node_index(const void *fit, int noffset,
  		const char *prop_name, int index);

  /**
   * fit_conf_get_prop_node() - Get node refered to by a configuration
   * @fit:	FIT to check
   * @noffset:	Offset of conf@xxx node to check
   * @prop_name:	Property to read from the conf node
   *

   * The conf- nodes contain references to other nodes, using properties
   * like 'kernel = "kernel"'. Given such a property name (e.g. "kernel"),

   * return the offset of the node referred to (e.g. offset of node

   * "/images/kernel".

   */
  int fit_conf_get_prop_node(const void *fit, int noffset,
  		const char *prop_name);

  int fit_check_ramdisk(const void *fit, int os_noffset,
  		uint8_t arch, int verify);

  int calculate_hash(const void *data, int data_len, const char *algo,
  			uint8_t *value, int *value_len);

  /*

   * At present we only support signing on the host, and verification on the
   * device

   */

  #if defined(USE_HOSTCC)
  # if defined(CONFIG_FIT_SIGNATURE)

  #  define IMAGE_ENABLE_SIGN	1

  #  define IMAGE_ENABLE_VERIFY	1

  #  include <openssl/evp.h>
  # else

  #  define IMAGE_ENABLE_SIGN	0

  #  define IMAGE_ENABLE_VERIFY	0

  # endif
  #else

  # define IMAGE_ENABLE_SIGN	0

  # define IMAGE_ENABLE_VERIFY	CONFIG_IS_ENABLED(FIT_SIGNATURE)

  #endif
  
  #ifdef USE_HOSTCC

  void *image_get_host_blob(void);
  void image_set_host_blob(void *host_blob);
  # define gd_fdt_blob()		image_get_host_blob()

  #else
  # define gd_fdt_blob()		(gd->fdt_blob)
  #endif
  
  #ifdef CONFIG_FIT_BEST_MATCH
  #define IMAGE_ENABLE_BEST_MATCH	1
  #else
  #define IMAGE_ENABLE_BEST_MATCH	0
  #endif

  /* Information passed to the signing routines */
  struct image_sign_info {
  	const char *keydir;		/* Directory conaining keys */
  	const char *keyname;		/* Name of key to use */
  	void *fit;			/* Pointer to FIT blob */
  	int node_offset;		/* Offset of signature node */

  	const char *name;		/* Algorithm name */
  	struct checksum_algo *checksum;	/* Checksum algorithm information */

  	struct padding_algo *padding;	/* Padding algorithm information */

  	struct crypto_algo *crypto;	/* Crypto algorithm information */

  	const void *fdt_blob;		/* FDT containing public keys */
  	int required_keynode;		/* Node offset of key to use: -1=any */
  	const char *require_keys;	/* Value for 'required' property */

  	const char *engine_id;		/* Engine to use for signing */

  };

  #endif /* Allow struct image_region to always be defined for rsa.h */

  
  /* A part of an image, used for hashing */
  struct image_region {
  	const void *data;
  	int size;
  };

  #if IMAGE_ENABLE_FIT

  #if IMAGE_ENABLE_VERIFY

  # include <u-boot/rsa-checksum.h>

  #endif
  struct checksum_algo {
  	const char *name;
  	const int checksum_len;

  	const int der_len;
  	const uint8_t *der_prefix;

  #if IMAGE_ENABLE_SIGN

  	const EVP_MD *(*calculate_sign)(void);
  #endif

  	int (*calculate)(const char *name,
  			 const struct image_region region[],
  			 int region_count, uint8_t *checksum);

  };

  struct crypto_algo {

  	const char *name;		/* Name of algorithm */

  	const int key_len;

  
  	/**
  	 * sign() - calculate and return signature for given input data
  	 *
  	 * @info:	Specifies key and FIT information
  	 * @data:	Pointer to the input data
  	 * @data_len:	Data length
  	 * @sigp:	Set to an allocated buffer holding the signature
  	 * @sig_len:	Set to length of the calculated hash
  	 *
  	 * This computes input data signature according to selected algorithm.
  	 * Resulting signature value is placed in an allocated buffer, the
  	 * pointer is returned as *sigp. The length of the calculated
  	 * signature is returned via the sig_len pointer argument. The caller
  	 * should free *sigp.
  	 *
  	 * @return: 0, on success, -ve on error
  	 */
  	int (*sign)(struct image_sign_info *info,
  		    const struct image_region region[],
  		    int region_count, uint8_t **sigp, uint *sig_len);
  
  	/**
  	 * add_verify_data() - Add verification information to FDT
  	 *
  	 * Add public key information to the FDT node, suitable for
  	 * verification at run-time. The information added depends on the
  	 * algorithm being used.
  	 *
  	 * @info:	Specifies key and FIT information
  	 * @keydest:	Destination FDT blob for public key data
  	 * @return: 0, on success, -ve on error
  	 */
  	int (*add_verify_data)(struct image_sign_info *info, void *keydest);
  
  	/**
  	 * verify() - Verify a signature against some data
  	 *
  	 * @info:	Specifies key and FIT information
  	 * @data:	Pointer to the input data
  	 * @data_len:	Data length
  	 * @sig:	Signature
  	 * @sig_len:	Number of bytes in signature
  	 * @return 0 if verified, -ve on error
  	 */
  	int (*verify)(struct image_sign_info *info,
  		      const struct image_region region[], int region_count,
  		      uint8_t *sig, uint sig_len);

  };

  struct padding_algo {
  	const char *name;
  	int (*verify)(struct image_sign_info *info,
  		      uint8_t *pad, int pad_len,
  		      const uint8_t *hash, int hash_len);
  };

  /**
   * image_get_checksum_algo() - Look up a checksum algorithm
   *
   * @param full_name	Name of algorithm in the form "checksum,crypto"
   * @return pointer to algorithm information, or NULL if not found
   */
  struct checksum_algo *image_get_checksum_algo(const char *full_name);

  
  /**

   * image_get_crypto_algo() - Look up a cryptosystem algorithm

   *

   * @param full_name	Name of algorithm in the form "checksum,crypto"

   * @return pointer to algorithm information, or NULL if not found
   */

  struct crypto_algo *image_get_crypto_algo(const char *full_name);

  /**

   * image_get_padding_algo() - Look up a padding algorithm
   *
   * @param name		Name of padding algorithm
   * @return pointer to algorithm information, or NULL if not found
   */
  struct padding_algo *image_get_padding_algo(const char *name);
  
  /**

   * fit_image_verify_required_sigs() - Verify signatures marked as 'required'
   *
   * @fit:		FIT to check
   * @image_noffset:	Offset of image node to check
   * @data:		Image data to check
   * @size:		Size of image data
   * @sig_blob:		FDT containing public keys
   * @no_sigsp:		Returns 1 if no signatures were required, and
   *			therefore nothing was checked. The caller may wish
   *			to fall back to other mechanisms, or refuse to
   *			boot.
   * @return 0 if all verified ok, <0 on error
   */
  int fit_image_verify_required_sigs(const void *fit, int image_noffset,
  		const char *data, size_t size, const void *sig_blob,
  		int *no_sigsp);
  
  /**
   * fit_image_check_sig() - Check a single image signature node
   *
   * @fit:		FIT to check
   * @noffset:		Offset of signature node to check
   * @data:		Image data to check
   * @size:		Size of image data
   * @required_keynode:	Offset in the control FDT of the required key node,
   *			if any. If this is given, then the image wil not
   *			pass verification unless that key is used. If this is
   *			-1 then any signature will do.
   * @err_msgp:		In the event of an error, this will be pointed to a
   *			help error string to display to the user.
   * @return 0 if all verified ok, <0 on error
   */
  int fit_image_check_sig(const void *fit, int noffset, const void *data,
  		size_t size, int required_keynode, char **err_msgp);

  int fit_image_decrypt_data(const void *fit,
  			   int image_noffset, int cipher_noffset,
  			   const void *data, size_t size,
  			   void **data_unciphered, size_t *size_unciphered);

  /**
   * fit_region_make_list() - Make a list of regions to hash
   *
   * Given a list of FIT regions (offset, size) provided by libfdt, create
   * a list of regions (void *, size) for use by the signature creationg
   * and verification code.
   *
   * @fit:		FIT image to process
   * @fdt_regions:	Regions as returned by libfdt
   * @count:		Number of regions returned by libfdt
   * @region:		Place to put list of regions (NULL to allocate it)
   * @return pointer to list of regions, or NULL if out of memory
   */
  struct image_region *fit_region_make_list(const void *fit,
  		struct fdt_region *fdt_regions, int count,
  		struct image_region *region);

  static inline int fit_image_check_target_arch(const void *fdt, int node)

  {

  #ifndef USE_HOSTCC

  	return fit_image_check_arch(fdt, node, IH_ARCH_DEFAULT);

  #else
  	return 0;
  #endif

  }

  /*
   * At present we only support ciphering on the host, and unciphering on the
   * device
   */
  #if defined(USE_HOSTCC)
  # if defined(CONFIG_FIT_CIPHER)
  #  define IMAGE_ENABLE_ENCRYPT	1
  #  define IMAGE_ENABLE_DECRYPT	1
  #  include <openssl/evp.h>
  # else
  #  define IMAGE_ENABLE_ENCRYPT	0
  #  define IMAGE_ENABLE_DECRYPT	0
  # endif
  #else
  # define IMAGE_ENABLE_ENCRYPT	0
  # define IMAGE_ENABLE_DECRYPT	CONFIG_IS_ENABLED(FIT_CIPHER)
  #endif
  
  /* Information passed to the ciphering routines */
  struct image_cipher_info {
  	const char *keydir;		/* Directory containing keys */
  	const char *keyname;		/* Name of key to use */
  	const char *ivname;		/* Name of IV to use */
  	const void *fit;		/* Pointer to FIT blob */
  	int node_noffset;		/* Offset of the cipher node */
  	const char *name;		/* Algorithm name */
  	struct cipher_algo *cipher;	/* Cipher algorithm information */
  	const void *fdt_blob;		/* FDT containing key and IV */
  	const void *key;		/* Value of the key */
  	const void *iv;			/* Value of the IV */
  	size_t size_unciphered;		/* Size of the unciphered data */
  };
  
  struct cipher_algo {
  	const char *name;		/* Name of algorithm */
  	int key_len;			/* Length of the key */
  	int iv_len;			/* Length of the IV */
  
  #if IMAGE_ENABLE_ENCRYPT
  	const EVP_CIPHER * (*calculate_type)(void);
  #endif
  
  	int (*encrypt)(struct image_cipher_info *info,
  		       const unsigned char *data, int data_len,
  		       unsigned char **cipher, int *cipher_len);
  
  	int (*add_cipher_data)(struct image_cipher_info *info,
  			       void *keydest);

  
  	int (*decrypt)(struct image_cipher_info *info,
  		       const void *cipher, size_t cipher_len,
  		       void **data, size_t *data_len);

  };
  
  int fit_image_cipher_get_algo(const void *fit, int noffset, char **algo);
  
  struct cipher_algo *image_get_cipher_algo(const char *full_name);

  #ifdef CONFIG_FIT_VERBOSE

  #define fit_unsupported(msg)	printf("! %s:%d " \

  				"FIT images not supported for '%s'
  ", \
  				__FILE__, __LINE__, (msg))

  #define fit_unsupported_reset(msg)	printf("! %s:%d " \

  				"FIT images not supported for '%s' " \
  				"- must reset board to recover!
  ", \
  				__FILE__, __LINE__, (msg))
  #else
  #define fit_unsupported(msg)
  #define fit_unsupported_reset(msg)
  #endif /* CONFIG_FIT_VERBOSE */

  #endif /* CONFIG_FIT */

  #if defined(CONFIG_ANDROID_BOOT_IMAGE)
  struct andr_img_hdr;
  int android_image_check_header(const struct andr_img_hdr *hdr);
  int android_image_get_kernel(const struct andr_img_hdr *hdr, int verify,
  			     ulong *os_data, ulong *os_len);
  int android_image_get_ramdisk(const struct andr_img_hdr *hdr,
  			      ulong *rd_data, ulong *rd_len);

  int android_image_get_second(const struct andr_img_hdr *hdr,
  			      ulong *second_data, ulong *second_len);

  bool android_image_get_dtbo(ulong hdr_addr, ulong *addr, u32 *size);

  bool android_image_get_dtb_by_index(ulong hdr_addr, u32 index, ulong *addr,
  				    u32 *size);

  ulong android_image_get_end(const struct andr_img_hdr *hdr);
  ulong android_image_get_kload(const struct andr_img_hdr *hdr);

  ulong android_image_get_kcomp(const struct andr_img_hdr *hdr);

  void android_print_contents(const struct andr_img_hdr *hdr);

  #if !defined(CONFIG_SPL_BUILD)
  bool android_image_print_dtb_contents(ulong hdr_addr);
  #endif

  bool image_arm64(void *images);

  
  #endif /* CONFIG_ANDROID_BOOT_IMAGE */

  /**
   * board_fit_config_name_match() - Check for a matching board name
   *
   * This is used when SPL loads a FIT containing multiple device tree files
   * and wants to work out which one to use. The description of each one is
   * passed to this function. The description comes from the 'description' field
   * in each (FDT) image node.
   *
   * @name: Device tree description
   * @return 0 if this device tree should be used, non-zero to try the next
   */
  int board_fit_config_name_match(const char *name);

  #if defined(CONFIG_SPL_FIT_IMAGE_POST_PROCESS) || \
  	defined(CONFIG_FIT_IMAGE_POST_PROCESS)

  /**
   * board_fit_image_post_process() - Do any post-process on FIT binary data
   *
   * This is used to do any sort of image manipulation, verification, decryption
   * etc. in a platform or board specific way. Obviously, anything done here would
   * need to be comprehended in how the images were prepared before being injected
   * into the FIT creation (i.e. the binary blobs would have been pre-processed
   * before being added to the FIT image).
   *
   * @image: pointer to the image start pointer
   * @size: pointer to the image size
   * @return no return value (failure should be handled internally)
   */
  void board_fit_image_post_process(void **p_image, size_t *p_size);
  #endif /* CONFIG_SPL_FIT_IMAGE_POST_PROCESS */

  #define FDT_ERROR	((ulong)(-1))

  ulong fdt_getprop_u32(const void *fdt, int node, const char *prop);

  
  /**
   * fit_find_config_node() - Find the node for the best DTB in a FIT image
   *
   * A FIT image contains one or more DTBs. This function parses the
   * configurations described in the FIT images and returns the node of
   * the first matching DTB. To check if a DTB matches a board, this function
   * calls board_fit_config_name_match(). If no matching DTB is found, it returns
   * the node described by the default configuration if it exists.
   *
   * @fdt: pointer to flat device tree
   * @return the node if found, -ve otherwise
   */

  int fit_find_config_node(const void *fdt);

  /**
   * Mapping of image types to function handlers to be invoked on the associated
   * loaded images
   *
   * @type: Type of image, I.E. IH_TYPE_*
   * @handler: Function to call on loaded image
   */
  struct fit_loadable_tbl {
  	int type;
  	/**
  	 * handler() - Process a loaded image
  	 *
  	 * @data: Pointer to start of loaded image data
  	 * @size: Size of loaded image data
  	 */
  	void (*handler)(ulong data, size_t size);
  };
  
  /*
   * Define a FIT loadable image type handler
   *
   * _type is a valid uimage_type ID as defined in the "Image Type" enum above
   * _handler is the handler function to call after this image type is loaded
   */
  #define U_BOOT_FIT_LOADABLE_HANDLER(_type, _handler) \
  	ll_entry_declare(struct fit_loadable_tbl, _function, fit_loadable) = { \
  		.type = _type, \
  		.handler = _handler, \
  	}

  #endif	/* __IMAGE_H__ */