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 8 #ifndef _IMAGETOOL_H_ 9 #define _IMAGETOOL_H_ 10 11 #include "os_support.h" 12 #include <errno.h> 13 #include <fcntl.h> 14 #include <stdbool.h> 15 #include <stdio.h> 16 #include <stdlib.h> 17 #include <string.h> 18 #include <sys/stat.h> 19 #include <sys/types.h> 20 #include <time.h> 21 #include <unistd.h> 22 #include <u-boot/sha1.h> 23 24 #include "fdt_host.h" 25 26 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 27 28 #define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask)) 29 #define ALIGN(x, a) __ALIGN_MASK((x), (typeof(x))(a) - 1) 30 31 #define IH_ARCH_DEFAULT IH_ARCH_INVALID 32 33 /* Information about a file that needs to be placed into the FIT */ 34 struct content_info { 35 struct content_info *next; 36 int type; /* File type (IH_TYPE_...) */ 37 const char *fname; 38 }; 39 40 /* 41 * This structure defines all such variables those are initialized by 42 * mkimage and dumpimage main core and need to be referred by image 43 * type specific functions 44 */ 45 struct image_tool_params { 46 int dflag; 47 int eflag; 48 int fflag; 49 int iflag; 50 int lflag; 51 int pflag; 52 int vflag; 53 int xflag; 54 int skipcpy; 55 int os; 56 int arch; 57 int type; 58 int comp; 59 char *dtc; 60 unsigned int addr; 61 unsigned int ep; 62 char *imagename; 63 char *imagename2; 64 char *datafile; 65 char *imagefile; 66 char *cmdname; 67 const char *outfile; /* Output filename */ 68 const char *keydir; /* Directory holding private keys */ 69 const char *keydest; /* Destination .dtb for public key */ 70 const char *keyfile; /* Filename of private or public key */ 71 const char *comment; /* Comment to add to signature node */ 72 int require_keys; /* 1 to mark signing keys as 'required' */ 73 int file_size; /* Total size of output file */ 74 int orig_file_size; /* Original size for file before padding */ 75 bool auto_its; /* Automatically create the .its file */ 76 int fit_image_type; /* Image type to put into the FIT */ 77 char *fit_ramdisk; /* Ramdisk file to include */ 78 struct content_info *content_head; /* List of files to include */ 79 struct content_info *content_tail; 80 bool external_data; /* Store data outside the FIT */ 81 bool quiet; /* Don't output text in normal operation */ 82 unsigned int external_offset; /* Add padding to external data */ 83 int bl_len; /* Block length in byte for external data */ 84 const char *engine_id; /* Engine to use for signing */ 85 bool reset_timestamp; /* Reset the timestamp on an existing image */ 86 }; 87 88 /* 89 * image type specific variables and callback functions 90 */ 91 struct image_type_params { 92 /* name is an identification tag string for added support */ 93 char *name; 94 /* 95 * header size is local to the specific image type to be supported, 96 * mkimage core treats this as number of bytes 97 */ 98 uint32_t header_size; 99 /* Image type header pointer */ 100 void *hdr; 101 /* 102 * There are several arguments that are passed on the command line 103 * and are registered as flags in image_tool_params structure. 104 * This callback function can be used to check the passed arguments 105 * are in-lined with the image type to be supported 106 * 107 * Returns 1 if parameter check is successful 108 */ 109 int (*check_params) (struct image_tool_params *); 110 /* 111 * This function is used by list command (i.e. mkimage -l <filename>) 112 * image type verification code must be put here 113 * 114 * Returns 0 if image header verification is successful 115 * otherwise, returns respective negative error codes 116 */ 117 int (*verify_header) (unsigned char *, int, struct image_tool_params *); 118 /* Prints image information abstracting from image header */ 119 void (*print_header) (const void *); 120 /* 121 * The header or image contents need to be set as per image type to 122 * be generated using this callback function. 123 * further output file post processing (for ex. checksum calculation, 124 * padding bytes etc..) can also be done in this callback function. 125 */ 126 void (*set_header) (void *, struct stat *, int, 127 struct image_tool_params *); 128 /* 129 * This function is used by the command to retrieve a component 130 * (sub-image) from the image (i.e. dumpimage -p <position> 131 * -o <component-outfile> <image>). Thus the code to extract a file 132 * from an image must be put here. 133 * 134 * Returns 0 if the file was successfully retrieved from the image, 135 * or a negative value on error. 136 */ 137 int (*extract_subimage)(void *, struct image_tool_params *); 138 /* 139 * Some image generation support for ex (default image type) supports 140 * more than one type_ids, this callback function is used to check 141 * whether input (-T <image_type>) is supported by registered image 142 * generation/list low level code 143 */ 144 int (*check_image_type) (uint8_t); 145 /* This callback function will be executed if fflag is defined */ 146 int (*fflag_handle) (struct image_tool_params *); 147 /* 148 * This callback function will be executed for variable size record 149 * It is expected to build this header in memory and return its length 150 * and a pointer to it by using image_type_params.header_size and 151 * image_type_params.hdr. The return value shall indicate if an 152 * additional padding should be used when copying the data image 153 * by returning the padding length. 154 */ 155 int (*vrec_header) (struct image_tool_params *, 156 struct image_type_params *); 157 }; 158 159 /** 160 * imagetool_get_type() - find the image type params for a given image type 161 * 162 * It scans all registers image type supports 163 * checks the input type for each supported image type 164 * 165 * if successful, 166 * returns respective image_type_params pointer if success 167 * if input type_id is not supported by any of image_type_support 168 * returns NULL 169 */ 170 struct image_type_params *imagetool_get_type(int type); 171 172 /* 173 * imagetool_verify_print_header() - verifies the image header 174 * 175 * Scan registered image types and verify the image_header for each 176 * supported image type. If verification is successful, this prints 177 * the respective header. 178 * 179 * @return 0 on success, negative if input image format does not match with 180 * any of supported image types 181 */ 182 int imagetool_verify_print_header( 183 void *ptr, 184 struct stat *sbuf, 185 struct image_type_params *tparams, 186 struct image_tool_params *params); 187 188 /* 189 * imagetool_verify_print_header_by_type() - verifies the image header 190 * 191 * Verify the image_header for the image type given by tparams. 192 * If verification is successful, this prints the respective header. 193 * @ptr: pointer the the image header 194 * @sbuf: stat information about the file pointed to by ptr 195 * @tparams: image type parameters 196 * @params: mkimage parameters 197 * 198 * @return 0 on success, negative if input image format does not match with 199 * the given image type 200 */ 201 int imagetool_verify_print_header_by_type( 202 void *ptr, 203 struct stat *sbuf, 204 struct image_type_params *tparams, 205 struct image_tool_params *params); 206 207 /** 208 * imagetool_save_subimage - store data into a file 209 * @file_name: name of the destination file 210 * @file_data: data to be written 211 * @file_len: the amount of data to store 212 * 213 * imagetool_save_subimage() store file_len bytes of data pointed by file_data 214 * into the file name by file_name. 215 * 216 * returns: 217 * zero in case of success or a negative value if fail. 218 */ 219 int imagetool_save_subimage( 220 const char *file_name, 221 ulong file_data, 222 ulong file_len); 223 224 /** 225 * imagetool_get_filesize() - Utility function to obtain the size of a file 226 * 227 * This function prints a message if an error occurs, showing the error that 228 * was obtained. 229 * 230 * @params: mkimage parameters 231 * @fname: filename to check 232 * @return size of file, or -ve value on error 233 */ 234 int imagetool_get_filesize(struct image_tool_params *params, const char *fname); 235 236 /** 237 * imagetool_get_source_date() - Get timestamp for build output. 238 * 239 * Gets a timestamp for embedding it in a build output. If set 240 * SOURCE_DATE_EPOCH is used. Else the given fallback value is returned. Prints 241 * an error message if SOURCE_DATE_EPOCH contains an invalid value and returns 242 * 0. 243 * 244 * @cmdname: command name 245 * @fallback: timestamp to use if SOURCE_DATE_EPOCH isn't set 246 * @return timestamp based on SOURCE_DATE_EPOCH 247 */ 248 time_t imagetool_get_source_date( 249 const char *cmdname, 250 time_t fallback); 251 252 /* 253 * There is a c file associated with supported image type low level code 254 * for ex. default_image.c, fit_image.c 255 */ 256 257 258 void pbl_load_uboot(int fd, struct image_tool_params *mparams); 259 int zynqmpbif_copy_image(int fd, struct image_tool_params *mparams); 260 int imx8image_copy_image(int fd, struct image_tool_params *mparams); 261 int imx8mimage_copy_image(int fd, struct image_tool_params *mparams); 262 int rockchip_copy_image(int fd, struct image_tool_params *mparams); 263 264 #define ___cat(a, b) a ## b 265 #define __cat(a, b) ___cat(a, b) 266 267 /* we need some special handling for this host tool running eventually on 268 * Darwin. The Mach-O section handling is a bit different than ELF section 269 * handling. The differnces in detail are: 270 * a) we have segments which have sections 271 * b) we need a API call to get the respective section symbols */ 272 #if defined(__MACH__) 273 #include <mach-o/getsect.h> 274 275 #define INIT_SECTION(name) do { \ 276 unsigned long name ## _len; \ 277 char *__cat(pstart_, name) = getsectdata("__DATA", \ 278 #name, &__cat(name, _len)); \ 279 char *__cat(pstop_, name) = __cat(pstart_, name) + \ 280 __cat(name, _len); \ 281 __cat(__start_, name) = (void *)__cat(pstart_, name); \ 282 __cat(__stop_, name) = (void *)__cat(pstop_, name); \ 283 } while (0) 284 #define SECTION(name) __attribute__((section("__DATA, " #name))) 285 286 struct image_type_params **__start_image_type, **__stop_image_type; 287 #else 288 #define INIT_SECTION(name) /* no-op for ELF */ 289 #define SECTION(name) __attribute__((section(#name))) 290 291 /* We construct a table of pointers in an ELF section (pointers generally 292 * go unpadded by gcc). ld creates boundary syms for us. */ 293 extern struct image_type_params *__start_image_type[], *__stop_image_type[]; 294 #endif /* __MACH__ */ 295 296 #if !defined(__used) 297 # if __GNUC__ == 3 && __GNUC_MINOR__ < 3 298 # define __used __attribute__((__unused__)) 299 # else 300 # define __used __attribute__((__used__)) 301 # endif 302 #endif 303 304 #define U_BOOT_IMAGE_TYPE( \ 305 _id, \ 306 _name, \ 307 _header_size, \ 308 _header, \ 309 _check_params, \ 310 _verify_header, \ 311 _print_header, \ 312 _set_header, \ 313 _extract_subimage, \ 314 _check_image_type, \ 315 _fflag_handle, \ 316 _vrec_header \ 317 ) \ 318 static struct image_type_params __cat(image_type_, _id) = \ 319 { \ 320 .name = _name, \ 321 .header_size = _header_size, \ 322 .hdr = _header, \ 323 .check_params = _check_params, \ 324 .verify_header = _verify_header, \ 325 .print_header = _print_header, \ 326 .set_header = _set_header, \ 327 .extract_subimage = _extract_subimage, \ 328 .check_image_type = _check_image_type, \ 329 .fflag_handle = _fflag_handle, \ 330 .vrec_header = _vrec_header \ 331 }; \ 332 static struct image_type_params *SECTION(image_type) __used \ 333 __cat(image_type_ptr_, _id) = &__cat(image_type_, _id) 334 335 #endif /* _IMAGETOOL_H_ */ 336