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u-boot/include/image.h
Michael van der Westhuizen 1de7bb4f27 Prevent a buffer overflow in mkimage when signing with SHA256 
Due to the FIT_MAX_HASH_LEN constant not having been updated
to support SHA256 signatures one will always see a buffer
overflow in fit_image_process_hash when signing images that
use this larger hash.  This is exposed by vboot_test.sh.

Signed-off-by: Michael van der Westhuizen <michael@smart-africa.com>
Acked-by: Simon Glass <sjg@chromium.org>
[trini: Rework a bit so move the exportable parts of hash.h outside of
 !USE_HOSTCC and only need that as a new include to image.h]
Signed-off-by: Tom Rini <trini@ti.com>
2014-06-05 17:01:23 -04:00

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/*
* (C) Copyright 2008 Semihalf
*
* (C) Copyright 2000-2005
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
********************************************************************
* 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>
/* Define this to avoid #ifdefs later on */
struct lmb;
#ifdef USE_HOSTCC
/* new uImage format support enabled on host */
#define CONFIG_FIT 1
#define CONFIG_OF_LIBFDT 1
#define CONFIG_FIT_VERBOSE 1 /* enable fit_format_{error,warning}() */
#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 " "
#endif /* USE_HOSTCC */
#if defined(CONFIG_FIT)
#include <hash.h>
#include <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
# ifdef CONFIG_SPL_SHA256_SUPPORT
# define IMAGE_ENABLE_SHA256 1
# endif
# else
# define CONFIG_CRC32 /* FIT images need CRC32 support */
# define CONFIG_MD5 /* and MD5 */
# define CONFIG_SHA1 /* and SHA1 */
# define CONFIG_SHA256 /* and SHA256 */
# define IMAGE_ENABLE_CRC32 1
# define IMAGE_ENABLE_MD5 1
# define IMAGE_ENABLE_SHA1 1
# define IMAGE_ENABLE_SHA256 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
#ifndef IMAGE_ENABLE_SHA256
#define IMAGE_ENABLE_SHA256 0
#endif
#endif /* CONFIG_FIT */
#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
# define IMAGE_ENABLE_RAMDISK_HIGH 1
#else
# define IMAGE_ENABLE_RAMDISK_HIGH 0
#endif
#ifdef CONFIG_OF_LIBFDT
# define IMAGE_ENABLE_OF_LIBFDT 1
#else
# define IMAGE_ENABLE_OF_LIBFDT 0
#endif
#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
/*
* Operating System Codes
*/
#define IH_OS_INVALID 0 /* Invalid OS */
#define IH_OS_OPENBSD 1 /* OpenBSD */
#define IH_OS_NETBSD 2 /* NetBSD */
#define IH_OS_FREEBSD 3 /* FreeBSD */
#define IH_OS_4_4BSD 4 /* 4.4BSD */
#define IH_OS_LINUX 5 /* Linux */
#define IH_OS_SVR4 6 /* SVR4 */
#define IH_OS_ESIX 7 /* Esix */
#define IH_OS_SOLARIS 8 /* Solaris */
#define IH_OS_IRIX 9 /* Irix */
#define IH_OS_SCO 10 /* SCO */
#define IH_OS_DELL 11 /* Dell */
#define IH_OS_NCR 12 /* NCR */
#define IH_OS_LYNXOS 13 /* LynxOS */
#define IH_OS_VXWORKS 14 /* VxWorks */
#define IH_OS_PSOS 15 /* pSOS */
#define IH_OS_QNX 16 /* QNX */
#define IH_OS_U_BOOT 17 /* Firmware */
#define IH_OS_RTEMS 18 /* RTEMS */
#define IH_OS_ARTOS 19 /* ARTOS */
#define IH_OS_UNITY 20 /* Unity OS */
#define IH_OS_INTEGRITY 21 /* INTEGRITY */
#define IH_OS_OSE 22 /* OSE */
#define IH_OS_PLAN9 23 /* Plan 9 */
/*
* CPU Architecture Codes (supported by Linux)
*/
#define IH_ARCH_INVALID 0 /* Invalid CPU */
#define IH_ARCH_ALPHA 1 /* Alpha */
#define IH_ARCH_ARM 2 /* ARM */
#define IH_ARCH_I386 3 /* Intel x86 */
#define IH_ARCH_IA64 4 /* IA64 */
#define IH_ARCH_MIPS 5 /* MIPS */
#define IH_ARCH_MIPS64 6 /* MIPS 64 Bit */
#define IH_ARCH_PPC 7 /* PowerPC */
#define IH_ARCH_S390 8 /* IBM S390 */
#define IH_ARCH_SH 9 /* SuperH */
#define IH_ARCH_SPARC 10 /* Sparc */
#define IH_ARCH_SPARC64 11 /* Sparc 64 Bit */
#define IH_ARCH_M68K 12 /* M68K */
#define IH_ARCH_MICROBLAZE 14 /* MicroBlaze */
#define IH_ARCH_NIOS2 15 /* Nios-II */
#define IH_ARCH_BLACKFIN 16 /* Blackfin */
#define IH_ARCH_AVR32 17 /* AVR32 */
#define IH_ARCH_ST200 18 /* STMicroelectronics ST200 */
#define IH_ARCH_SANDBOX 19 /* Sandbox architecture (test only) */
#define IH_ARCH_NDS32 20 /* ANDES Technology - NDS32 */
#define IH_ARCH_OPENRISC 21 /* OpenRISC 1000 */
#define IH_ARCH_ARM64 22 /* ARM64 */
#define IH_ARCH_ARC 23 /* Synopsys DesignWare ARC */
/*
* 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).
*/
#define IH_TYPE_INVALID 0 /* Invalid Image */
#define IH_TYPE_STANDALONE 1 /* Standalone Program */
#define IH_TYPE_KERNEL 2 /* OS Kernel Image */
#define IH_TYPE_RAMDISK 3 /* RAMDisk Image */
#define IH_TYPE_MULTI 4 /* Multi-File Image */
#define IH_TYPE_FIRMWARE 5 /* Firmware Image */
#define IH_TYPE_SCRIPT 6 /* Script file */
#define IH_TYPE_FILESYSTEM 7 /* Filesystem Image (any type) */
#define IH_TYPE_FLATDT 8 /* Binary Flat Device Tree Blob */
#define IH_TYPE_KWBIMAGE 9 /* Kirkwood Boot Image */
#define IH_TYPE_IMXIMAGE 10 /* Freescale IMXBoot Image */
#define IH_TYPE_UBLIMAGE 11 /* Davinci UBL Image */
#define IH_TYPE_OMAPIMAGE 12 /* TI OMAP Config Header Image */
#define IH_TYPE_AISIMAGE 13 /* TI Davinci AIS Image */
#define IH_TYPE_KERNEL_NOLOAD 14 /* OS Kernel Image, can run from any load address */
#define IH_TYPE_PBLIMAGE 15 /* Freescale PBL Boot Image */
#define IH_TYPE_MXSIMAGE 16 /* Freescale MXSBoot Image */
#define IH_TYPE_GPIMAGE 17 /* TI Keystone GPHeader Image */
#define IH_TYPE_ATMELIMAGE 18 /* ATMEL ROM bootable Image */
/*
* Compression Types
*/
#define IH_COMP_NONE 0 /* No Compression Used */
#define IH_COMP_GZIP 1 /* gzip Compression Used */
#define IH_COMP_BZIP2 2 /* bzip2 Compression Used */
#define IH_COMP_LZMA 3 /* lzma Compression Used */
#define IH_COMP_LZO 4 /* lzo Compression Used */
#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 {
__be32 ih_magic; /* Image Header Magic Number */
__be32 ih_hcrc; /* Image Header CRC Checksum */
__be32 ih_time; /* Image Creation Timestamp */
__be32 ih_size; /* Image Data Size */
__be32 ih_load; /* Data Load Address */
__be32 ih_ep; /* Entry Point Address */
__be32 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 */
} 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 defined(CONFIG_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 */
#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; /* getenv("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);
const char *genimg_get_arch_name(uint8_t arch);
const char *genimg_get_type_name(uint8_t type);
const char *genimg_get_comp_name(uint8_t comp);
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_REQUIRED, /* Must be provided */
};
#ifndef USE_HOSTCC
/* Image format types, returned by _get_format() routine */
#define IMAGE_FORMAT_INVALID 0x00
#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
#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 */
int genimg_get_format(const void *img_addr);
int genimg_has_config(bootm_headers_t *images);
ulong genimg_get_image(ulong img_addr);
int boot_get_ramdisk(int argc, char * const argv[], bootm_headers_t *images,
uint8_t arch, ulong *rd_start, ulong *rd_end);
/**
* 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.
*
* @param images Boot images structure
* @param prop_name Property name to look up (FIT_..._PROP)
* @param addr Address of FIT in memory
* @param fit_unamep On entry this is the requested image name
* (e.g. "kernel@1") 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
*/
int fit_image_load(bootm_headers_t *images, const char *prop_name, 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);
/**
* 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@1 {
* ...
* };
* };
* configurations {
* conf@1 {
* kernel = "kernel@1";
* };
* };
*
* 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 getenv_bootm_low(void);
phys_size_t getenv_bootm_size(void);
phys_size_t getenv_bootm_mapsize(void);
void memmove_wd(void *to, void *from, size_t len, ulong chunksz);
#endif
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);
}
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 */
/**
* 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);
/*******************************************************************/
/* New uImage format specific code (prefixed with fit_) */
/*******************************************************************/
#if defined(CONFIG_FIT)
#define FIT_IMAGES_PATH "/images"
#define FIT_CONFS_PATH "/configurations"
/* hash/signature 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"
/* image node */
#define FIT_DATA_PROP "data"
#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_DEFAULT_PROP "default"
#define FIT_MAX_HASH_LEN HASH_MAX_DIGEST_SIZE
/* 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);
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
*/
static inline ulong fit_get_end(const void *fit)
{
return (ulong)fit + fdt_totalsize(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_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);
/**
* 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'
*
* 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);
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_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);
int fit_conf_get_node(const void *fit, const char *conf_uname);
/**
* 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@1"'. Given such a property name (e.g. "kernel"),
* return the offset of the node referred to (e.g. offset of node
* "/images/kernel@1".
*/
int fit_conf_get_prop_node(const void *fit, int noffset,
const char *prop_name);
void fit_conf_print(const void *fit, int noffset, const char *p);
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(CONFIG_FIT_SIGNATURE)
# ifdef USE_HOSTCC
# define IMAGE_ENABLE_SIGN 1
# define IMAGE_ENABLE_VERIFY 1
# include <openssl/evp.h>
#else
# define IMAGE_ENABLE_SIGN 0
# define IMAGE_ENABLE_VERIFY 1
# endif
#else
# define IMAGE_ENABLE_SIGN 0
# define IMAGE_ENABLE_VERIFY 0
#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 */
struct image_sig_algo *algo; /* 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 */
};
/* A part of an image, used for hashing */
struct image_region {
const void *data;
int size;
};
#if IMAGE_ENABLE_VERIFY
# include <rsa-checksum.h>
#endif
struct checksum_algo {
const char *name;
const int checksum_len;
const int pad_len;
#if IMAGE_ENABLE_SIGN
const EVP_MD *(*calculate_sign)(void);
#endif
void (*calculate)(const struct image_region region[],
int region_count, uint8_t *checksum);
const uint8_t *rsa_padding;
};
struct image_sig_algo {
const char *name; /* Name of algorithm */
/**
* 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);
/* pointer to checksum algorithm */
struct checksum_algo *checksum;
};
/**
* image_get_sig_algo() - Look up a signature algortihm
*
* @param name Name of algorithm
* @return pointer to algorithm information, or NULL if not found
*/
struct image_sig_algo *image_get_sig_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);
/**
* 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
}
#ifdef CONFIG_FIT_VERBOSE
#define fit_unsupported(msg) printf("! %s:%d " \
"FIT images not supported for '%s'\n", \
__FILE__, __LINE__, (msg))
#define fit_unsupported_reset(msg) printf("! %s:%d " \
"FIT images not supported for '%s' " \
"- must reset board to recover!\n", \
__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);
ulong android_image_get_end(const struct andr_img_hdr *hdr);
ulong android_image_get_kload(const struct andr_img_hdr *hdr);
#endif /* CONFIG_ANDROID_BOOT_IMAGE */
#endif /* __IMAGE_H__ */
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