1 /* SPDX-License-Identifier: GPL-2.0+ */
5 * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
11 #include "os_support.h"
19 #include <sys/types.h>
22 #include <u-boot/sha1.h>
26 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
28 #define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask))
29 #define ALIGN(x, a) __ALIGN_MASK((x), (typeof(x))(a) - 1)
31 #define IH_ARCH_DEFAULT IH_ARCH_INVALID
33 /* Information about a file that needs to be placed into the FIT */
35 struct content_info *next;
36 int type; /* File type (IH_TYPE_...) */
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
45 struct image_tool_params {
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 const char *algo_name; /* Algorithm name to use hashing/signing */
73 int require_keys; /* 1 to mark signing keys as 'required' */
74 int file_size; /* Total size of output file */
75 int orig_file_size; /* Original size for file before padding */
76 bool auto_its; /* Automatically create the .its file */
77 int fit_image_type; /* Image type to put into the FIT */
78 char *fit_ramdisk; /* Ramdisk file to include */
79 struct content_info *content_head; /* List of files to include */
80 struct content_info *content_tail;
81 bool external_data; /* Store data outside the FIT */
82 bool quiet; /* Don't output text in normal operation */
83 unsigned int external_offset; /* Add padding to external data */
84 int bl_len; /* Block length in byte for external data */
85 const char *engine_id; /* Engine to use for signing */
86 bool reset_timestamp; /* Reset the timestamp on an existing image */
90 * image type specific variables and callback functions
92 struct image_type_params {
93 /* name is an identification tag string for added support */
96 * header size is local to the specific image type to be supported,
97 * mkimage core treats this as number of bytes
100 /* Image type header pointer */
103 * There are several arguments that are passed on the command line
104 * and are registered as flags in image_tool_params structure.
105 * This callback function can be used to check the passed arguments
106 * are in-lined with the image type to be supported
108 * Returns 1 if parameter check is successful
110 int (*check_params) (struct image_tool_params *);
112 * This function is used by list command (i.e. mkimage -l <filename>)
113 * image type verification code must be put here
115 * Returns 0 if image header verification is successful
116 * otherwise, returns respective negative error codes
118 int (*verify_header) (unsigned char *, int, struct image_tool_params *);
119 /* Prints image information abstracting from image header */
120 void (*print_header) (const void *);
122 * The header or image contents need to be set as per image type to
123 * be generated using this callback function.
124 * further output file post processing (for ex. checksum calculation,
125 * padding bytes etc..) can also be done in this callback function.
127 void (*set_header) (void *, struct stat *, int,
128 struct image_tool_params *);
130 * This function is used by the command to retrieve a component
131 * (sub-image) from the image (i.e. dumpimage -p <position>
132 * -o <component-outfile> <image>). Thus the code to extract a file
133 * from an image must be put here.
135 * Returns 0 if the file was successfully retrieved from the image,
136 * or a negative value on error.
138 int (*extract_subimage)(void *, struct image_tool_params *);
140 * Some image generation support for ex (default image type) supports
141 * more than one type_ids, this callback function is used to check
142 * whether input (-T <image_type>) is supported by registered image
143 * generation/list low level code
145 int (*check_image_type) (uint8_t);
146 /* This callback function will be executed if fflag is defined */
147 int (*fflag_handle) (struct image_tool_params *);
149 * This callback function will be executed for variable size record
150 * It is expected to build this header in memory and return its length
151 * and a pointer to it by using image_type_params.header_size and
152 * image_type_params.hdr. The return value shall indicate if an
153 * additional padding should be used when copying the data image
154 * by returning the padding length.
156 int (*vrec_header) (struct image_tool_params *,
157 struct image_type_params *);
161 * imagetool_get_type() - find the image type params for a given image type
163 * It scans all registers image type supports
164 * checks the input type for each supported image type
167 * returns respective image_type_params pointer if success
168 * if input type_id is not supported by any of image_type_support
171 struct image_type_params *imagetool_get_type(int type);
174 * imagetool_verify_print_header() - verifies the image header
176 * Scan registered image types and verify the image_header for each
177 * supported image type. If verification is successful, this prints
178 * the respective header.
180 * Return: 0 on success, negative if input image format does not match with
181 * any of supported image types
183 int imagetool_verify_print_header(
186 struct image_type_params *tparams,
187 struct image_tool_params *params);
190 * imagetool_verify_print_header_by_type() - verifies the image header
192 * Verify the image_header for the image type given by tparams.
193 * If verification is successful, this prints the respective header.
194 * @ptr: pointer the the image header
195 * @sbuf: stat information about the file pointed to by ptr
196 * @tparams: image type parameters
197 * @params: mkimage parameters
199 * Return: 0 on success, negative if input image format does not match with
200 * the given image type
202 int imagetool_verify_print_header_by_type(
205 struct image_type_params *tparams,
206 struct image_tool_params *params);
209 * imagetool_save_subimage - store data into a file
210 * @file_name: name of the destination file
211 * @file_data: data to be written
212 * @file_len: the amount of data to store
214 * imagetool_save_subimage() store file_len bytes of data pointed by file_data
215 * into the file name by file_name.
218 * zero in case of success or a negative value if fail.
220 int imagetool_save_subimage(
221 const char *file_name,
226 * imagetool_get_filesize() - Utility function to obtain the size of a file
228 * This function prints a message if an error occurs, showing the error that
231 * @params: mkimage parameters
232 * @fname: filename to check
233 * Return: size of file, or -ve value on error
235 int imagetool_get_filesize(struct image_tool_params *params, const char *fname);
238 * imagetool_get_source_date() - Get timestamp for build output.
240 * Gets a timestamp for embedding it in a build output. If set
241 * SOURCE_DATE_EPOCH is used. Else the given fallback value is returned. Prints
242 * an error message if SOURCE_DATE_EPOCH contains an invalid value and returns
245 * @cmdname: command name
246 * @fallback: timestamp to use if SOURCE_DATE_EPOCH isn't set
247 * Return: timestamp based on SOURCE_DATE_EPOCH
249 time_t imagetool_get_source_date(
254 * There is a c file associated with supported image type low level code
255 * for ex. default_image.c, fit_image.c
259 void pbl_load_uboot(int fd, struct image_tool_params *mparams);
260 int zynqmpbif_copy_image(int fd, struct image_tool_params *mparams);
261 int imx8image_copy_image(int fd, struct image_tool_params *mparams);
262 int imx8mimage_copy_image(int fd, struct image_tool_params *mparams);
263 int rockchip_copy_image(int fd, struct image_tool_params *mparams);
265 #define ___cat(a, b) a ## b
266 #define __cat(a, b) ___cat(a, b)
268 /* we need some special handling for this host tool running eventually on
269 * Darwin. The Mach-O section handling is a bit different than ELF section
270 * handling. The differnces in detail are:
271 * a) we have segments which have sections
272 * b) we need a API call to get the respective section symbols */
273 #if defined(__MACH__)
274 #include <mach-o/getsect.h>
276 #define INIT_SECTION(name) do { \
277 unsigned long name ## _len; \
278 char *__cat(pstart_, name) = getsectdata("__DATA", \
279 #name, &__cat(name, _len)); \
280 char *__cat(pstop_, name) = __cat(pstart_, name) + \
282 __cat(__start_, name) = (void *)__cat(pstart_, name); \
283 __cat(__stop_, name) = (void *)__cat(pstop_, name); \
285 #define SECTION(name) __attribute__((section("__DATA, " #name)))
287 struct image_type_params **__start_image_type, **__stop_image_type;
289 #define INIT_SECTION(name) /* no-op for ELF */
290 #define SECTION(name) __attribute__((section(#name)))
292 /* We construct a table of pointers in an ELF section (pointers generally
293 * go unpadded by gcc). ld creates boundary syms for us. */
294 extern struct image_type_params *__start_image_type[], *__stop_image_type[];
295 #endif /* __MACH__ */
298 # if __GNUC__ == 3 && __GNUC_MINOR__ < 3
299 # define __used __attribute__((__unused__))
301 # define __used __attribute__((__used__))
305 #define U_BOOT_IMAGE_TYPE( \
319 static struct image_type_params __cat(image_type_, _id) = \
322 .header_size = _header_size, \
324 .check_params = _check_params, \
325 .verify_header = _verify_header, \
326 .print_header = _print_header, \
327 .set_header = _set_header, \
328 .extract_subimage = _extract_subimage, \
329 .check_image_type = _check_image_type, \
330 .fflag_handle = _fflag_handle, \
331 .vrec_header = _vrec_header \
333 static struct image_type_params *SECTION(image_type) __used \
334 __cat(image_type_ptr_, _id) = &__cat(image_type_, _id)
336 #endif /* _IMAGETOOL_H_ */