imagetool.h 11 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * (C) Copyright 2013
  4. *
  5. * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
  6. */
  7. #ifndef _IMAGETOOL_H_
  8. #define _IMAGETOOL_H_
  9. #include "os_support.h"
  10. #include <errno.h>
  11. #include <fcntl.h>
  12. #include <stdbool.h>
  13. #include <stdio.h>
  14. #include <stdlib.h>
  15. #include <string.h>
  16. #include <sys/stat.h>
  17. #include <sys/types.h>
  18. #include <time.h>
  19. #include <unistd.h>
  20. #include <u-boot/sha1.h>
  21. #include "fdt_host.h"
  22. #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  23. #define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask))
  24. #define ALIGN(x, a) __ALIGN_MASK((x), (typeof(x))(a) - 1)
  25. #define IH_ARCH_DEFAULT IH_ARCH_INVALID
  26. /* Information about a file that needs to be placed into the FIT */
  27. struct content_info {
  28. struct content_info *next;
  29. int type; /* File type (IH_TYPE_...) */
  30. const char *fname;
  31. };
  32. /*
  33. * This structure defines all such variables those are initialized by
  34. * mkimage and dumpimage main core and need to be referred by image
  35. * type specific functions
  36. */
  37. struct image_tool_params {
  38. int dflag;
  39. int eflag;
  40. int fflag;
  41. int iflag;
  42. int lflag;
  43. int pflag;
  44. int vflag;
  45. int xflag;
  46. int skipcpy;
  47. int os;
  48. int arch;
  49. int type;
  50. int comp;
  51. char *dtc;
  52. unsigned int addr;
  53. unsigned int ep;
  54. char *imagename;
  55. char *imagename2;
  56. char *datafile;
  57. char *imagefile;
  58. char *cmdname;
  59. const char *outfile; /* Output filename */
  60. const char *keydir; /* Directory holding private keys */
  61. const char *keydest; /* Destination .dtb for public key */
  62. const char *keyfile; /* Filename of private or public key */
  63. const char *comment; /* Comment to add to signature node */
  64. int require_keys; /* 1 to mark signing keys as 'required' */
  65. int file_size; /* Total size of output file */
  66. int orig_file_size; /* Original size for file before padding */
  67. bool auto_its; /* Automatically create the .its file */
  68. int fit_image_type; /* Image type to put into the FIT */
  69. char *fit_ramdisk; /* Ramdisk file to include */
  70. struct content_info *content_head; /* List of files to include */
  71. struct content_info *content_tail;
  72. bool external_data; /* Store data outside the FIT */
  73. bool quiet; /* Don't output text in normal operation */
  74. unsigned int external_offset; /* Add padding to external data */
  75. int bl_len; /* Block length in byte for external data */
  76. const char *engine_id; /* Engine to use for signing */
  77. bool reset_timestamp; /* Reset the timestamp on an existing image */
  78. };
  79. /*
  80. * image type specific variables and callback functions
  81. */
  82. struct image_type_params {
  83. /* name is an identification tag string for added support */
  84. char *name;
  85. /*
  86. * header size is local to the specific image type to be supported,
  87. * mkimage core treats this as number of bytes
  88. */
  89. uint32_t header_size;
  90. /* Image type header pointer */
  91. void *hdr;
  92. /*
  93. * There are several arguments that are passed on the command line
  94. * and are registered as flags in image_tool_params structure.
  95. * This callback function can be used to check the passed arguments
  96. * are in-lined with the image type to be supported
  97. *
  98. * Returns 1 if parameter check is successful
  99. */
  100. int (*check_params) (struct image_tool_params *);
  101. /*
  102. * This function is used by list command (i.e. mkimage -l <filename>)
  103. * image type verification code must be put here
  104. *
  105. * Returns 0 if image header verification is successful
  106. * otherwise, returns respective negative error codes
  107. */
  108. int (*verify_header) (unsigned char *, int, struct image_tool_params *);
  109. /* Prints image information abstracting from image header */
  110. void (*print_header) (const void *);
  111. /*
  112. * The header or image contents need to be set as per image type to
  113. * be generated using this callback function.
  114. * further output file post processing (for ex. checksum calculation,
  115. * padding bytes etc..) can also be done in this callback function.
  116. */
  117. void (*set_header) (void *, struct stat *, int,
  118. struct image_tool_params *);
  119. /*
  120. * This function is used by the command to retrieve a component
  121. * (sub-image) from the image (i.e. dumpimage -p <position>
  122. * -o <component-outfile> <image>). Thus the code to extract a file
  123. * from an image must be put here.
  124. *
  125. * Returns 0 if the file was successfully retrieved from the image,
  126. * or a negative value on error.
  127. */
  128. int (*extract_subimage)(void *, struct image_tool_params *);
  129. /*
  130. * Some image generation support for ex (default image type) supports
  131. * more than one type_ids, this callback function is used to check
  132. * whether input (-T <image_type>) is supported by registered image
  133. * generation/list low level code
  134. */
  135. int (*check_image_type) (uint8_t);
  136. /* This callback function will be executed if fflag is defined */
  137. int (*fflag_handle) (struct image_tool_params *);
  138. /*
  139. * This callback function will be executed for variable size record
  140. * It is expected to build this header in memory and return its length
  141. * and a pointer to it by using image_type_params.header_size and
  142. * image_type_params.hdr. The return value shall indicate if an
  143. * additional padding should be used when copying the data image
  144. * by returning the padding length.
  145. */
  146. int (*vrec_header) (struct image_tool_params *,
  147. struct image_type_params *);
  148. };
  149. /**
  150. * imagetool_get_type() - find the image type params for a given image type
  151. *
  152. * It scans all registers image type supports
  153. * checks the input type for each supported image type
  154. *
  155. * if successful,
  156. * returns respective image_type_params pointer if success
  157. * if input type_id is not supported by any of image_type_support
  158. * returns NULL
  159. */
  160. struct image_type_params *imagetool_get_type(int type);
  161. /*
  162. * imagetool_verify_print_header() - verifies the image header
  163. *
  164. * Scan registered image types and verify the image_header for each
  165. * supported image type. If verification is successful, this prints
  166. * the respective header.
  167. *
  168. * @return 0 on success, negative if input image format does not match with
  169. * any of supported image types
  170. */
  171. int imagetool_verify_print_header(
  172. void *ptr,
  173. struct stat *sbuf,
  174. struct image_type_params *tparams,
  175. struct image_tool_params *params);
  176. /*
  177. * imagetool_verify_print_header_by_type() - verifies the image header
  178. *
  179. * Verify the image_header for the image type given by tparams.
  180. * If verification is successful, this prints the respective header.
  181. * @ptr: pointer the the image header
  182. * @sbuf: stat information about the file pointed to by ptr
  183. * @tparams: image type parameters
  184. * @params: mkimage parameters
  185. *
  186. * @return 0 on success, negative if input image format does not match with
  187. * the given image type
  188. */
  189. int imagetool_verify_print_header_by_type(
  190. void *ptr,
  191. struct stat *sbuf,
  192. struct image_type_params *tparams,
  193. struct image_tool_params *params);
  194. /**
  195. * imagetool_save_subimage - store data into a file
  196. * @file_name: name of the destination file
  197. * @file_data: data to be written
  198. * @file_len: the amount of data to store
  199. *
  200. * imagetool_save_subimage() store file_len bytes of data pointed by file_data
  201. * into the file name by file_name.
  202. *
  203. * returns:
  204. * zero in case of success or a negative value if fail.
  205. */
  206. int imagetool_save_subimage(
  207. const char *file_name,
  208. ulong file_data,
  209. ulong file_len);
  210. /**
  211. * imagetool_get_filesize() - Utility function to obtain the size of a file
  212. *
  213. * This function prints a message if an error occurs, showing the error that
  214. * was obtained.
  215. *
  216. * @params: mkimage parameters
  217. * @fname: filename to check
  218. * @return size of file, or -ve value on error
  219. */
  220. int imagetool_get_filesize(struct image_tool_params *params, const char *fname);
  221. /**
  222. * imagetool_get_source_date() - Get timestamp for build output.
  223. *
  224. * Gets a timestamp for embedding it in a build output. If set
  225. * SOURCE_DATE_EPOCH is used. Else the given fallback value is returned. Prints
  226. * an error message if SOURCE_DATE_EPOCH contains an invalid value and returns
  227. * 0.
  228. *
  229. * @cmdname: command name
  230. * @fallback: timestamp to use if SOURCE_DATE_EPOCH isn't set
  231. * @return timestamp based on SOURCE_DATE_EPOCH
  232. */
  233. time_t imagetool_get_source_date(
  234. const char *cmdname,
  235. time_t fallback);
  236. /*
  237. * There is a c file associated with supported image type low level code
  238. * for ex. default_image.c, fit_image.c
  239. */
  240. void pbl_load_uboot(int fd, struct image_tool_params *mparams);
  241. int zynqmpbif_copy_image(int fd, struct image_tool_params *mparams);
  242. int imx8image_copy_image(int fd, struct image_tool_params *mparams);
  243. int imx8mimage_copy_image(int fd, struct image_tool_params *mparams);
  244. int rockchip_copy_image(int fd, struct image_tool_params *mparams);
  245. #define ___cat(a, b) a ## b
  246. #define __cat(a, b) ___cat(a, b)
  247. /* we need some special handling for this host tool running eventually on
  248. * Darwin. The Mach-O section handling is a bit different than ELF section
  249. * handling. The differnces in detail are:
  250. * a) we have segments which have sections
  251. * b) we need a API call to get the respective section symbols */
  252. #if defined(__MACH__)
  253. #include <mach-o/getsect.h>
  254. #define INIT_SECTION(name) do { \
  255. unsigned long name ## _len; \
  256. char *__cat(pstart_, name) = getsectdata("__DATA", \
  257. #name, &__cat(name, _len)); \
  258. char *__cat(pstop_, name) = __cat(pstart_, name) + \
  259. __cat(name, _len); \
  260. __cat(__start_, name) = (void *)__cat(pstart_, name); \
  261. __cat(__stop_, name) = (void *)__cat(pstop_, name); \
  262. } while (0)
  263. #define SECTION(name) __attribute__((section("__DATA, " #name)))
  264. struct image_type_params **__start_image_type, **__stop_image_type;
  265. #else
  266. #define INIT_SECTION(name) /* no-op for ELF */
  267. #define SECTION(name) __attribute__((section(#name)))
  268. /* We construct a table of pointers in an ELF section (pointers generally
  269. * go unpadded by gcc). ld creates boundary syms for us. */
  270. extern struct image_type_params *__start_image_type[], *__stop_image_type[];
  271. #endif /* __MACH__ */
  272. #if !defined(__used)
  273. # if __GNUC__ == 3 && __GNUC_MINOR__ < 3
  274. # define __used __attribute__((__unused__))
  275. # else
  276. # define __used __attribute__((__used__))
  277. # endif
  278. #endif
  279. #define U_BOOT_IMAGE_TYPE( \
  280. _id, \
  281. _name, \
  282. _header_size, \
  283. _header, \
  284. _check_params, \
  285. _verify_header, \
  286. _print_header, \
  287. _set_header, \
  288. _extract_subimage, \
  289. _check_image_type, \
  290. _fflag_handle, \
  291. _vrec_header \
  292. ) \
  293. static struct image_type_params __cat(image_type_, _id) = \
  294. { \
  295. .name = _name, \
  296. .header_size = _header_size, \
  297. .hdr = _header, \
  298. .check_params = _check_params, \
  299. .verify_header = _verify_header, \
  300. .print_header = _print_header, \
  301. .set_header = _set_header, \
  302. .extract_subimage = _extract_subimage, \
  303. .check_image_type = _check_image_type, \
  304. .fflag_handle = _fflag_handle, \
  305. .vrec_header = _vrec_header \
  306. }; \
  307. static struct image_type_params *SECTION(image_type) __used \
  308. __cat(image_type_ptr_, _id) = &__cat(image_type_, _id)
  309. #endif /* _IMAGETOOL_H_ */