4 * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
6 * SPDX-License-Identifier: GPL-2.0+
12 #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 IH_ARCH_DEFAULT IH_ARCH_INVALID
30 /* Information about a file that needs to be placed into the FIT */
32 struct content_info *next;
33 int type; /* File type (IH_TYPE_...) */
38 * This structure defines all such variables those are initialized by
39 * mkimage and dumpimage main core and need to be referred by image
40 * type specific functions
42 struct image_tool_params {
64 const char *outfile; /* Output filename */
65 const char *keydir; /* Directory holding private keys */
66 const char *keydest; /* Destination .dtb for public key */
67 const char *comment; /* Comment to add to signature node */
68 int require_keys; /* 1 to mark signing keys as 'required' */
69 int file_size; /* Total size of output file */
70 int orig_file_size; /* Original size for file before padding */
71 bool auto_its; /* Automatically create the .its file */
72 int fit_image_type; /* Image type to put into the FIT */
73 char *fit_ramdisk; /* Ramdisk file to include */
74 struct content_info *content_head; /* List of files to include */
75 struct content_info *content_tail;
76 bool external_data; /* Store data outside the FIT */
77 bool quiet; /* Don't output text in normal operation */
78 unsigned int external_offset; /* Add padding to external data */
79 const char *engine_id; /* Engine to use for signing */
83 * image type specific variables and callback functions
85 struct image_type_params {
86 /* name is an identification tag string for added support */
89 * header size is local to the specific image type to be supported,
90 * mkimage core treats this as number of bytes
93 /* Image type header pointer */
96 * There are several arguments that are passed on the command line
97 * and are registered as flags in image_tool_params structure.
98 * This callback function can be used to check the passed arguments
99 * are in-lined with the image type to be supported
101 * Returns 1 if parameter check is successful
103 int (*check_params) (struct image_tool_params *);
105 * This function is used by list command (i.e. mkimage -l <filename>)
106 * image type verification code must be put here
108 * Returns 0 if image header verification is successful
109 * otherwise, returns respective negative error codes
111 int (*verify_header) (unsigned char *, int, struct image_tool_params *);
112 /* Prints image information abstracting from image header */
113 void (*print_header) (const void *);
115 * The header or image contents need to be set as per image type to
116 * be generated using this callback function.
117 * further output file post processing (for ex. checksum calculation,
118 * padding bytes etc..) can also be done in this callback function.
120 void (*set_header) (void *, struct stat *, int,
121 struct image_tool_params *);
123 * This function is used by the command to retrieve a component
124 * (sub-image) from the image (i.e. dumpimage -i <image> -p <position>
126 * Thus the code to extract a file from an image must be put here.
128 * Returns 0 if the file was successfully retrieved from the image,
129 * or a negative value on error.
131 int (*extract_subimage)(void *, struct image_tool_params *);
133 * Some image generation support for ex (default image type) supports
134 * more than one type_ids, this callback function is used to check
135 * whether input (-T <image_type>) is supported by registered image
136 * generation/list low level code
138 int (*check_image_type) (uint8_t);
139 /* This callback function will be executed if fflag is defined */
140 int (*fflag_handle) (struct image_tool_params *);
142 * This callback function will be executed for variable size record
143 * It is expected to build this header in memory and return its length
144 * and a pointer to it by using image_type_params.header_size and
145 * image_type_params.hdr. The return value shall indicate if an
146 * additional padding should be used when copying the data image
147 * by returning the padding length.
149 int (*vrec_header) (struct image_tool_params *,
150 struct image_type_params *);
154 * imagetool_get_type() - find the image type params for a given image type
156 * It scans all registers image type supports
157 * checks the input type for each supported image type
160 * returns respective image_type_params pointer if success
161 * if input type_id is not supported by any of image_type_support
164 struct image_type_params *imagetool_get_type(int type);
167 * imagetool_verify_print_header() - verifies the image header
169 * Scan registered image types and verify the image_header for each
170 * supported image type. If verification is successful, this prints
171 * the respective header.
173 * @return 0 on success, negative if input image format does not match with
174 * any of supported image types
176 int imagetool_verify_print_header(
179 struct image_type_params *tparams,
180 struct image_tool_params *params);
183 * imagetool_save_subimage - store data into a file
184 * @file_name: name of the destination file
185 * @file_data: data to be written
186 * @file_len: the amount of data to store
188 * imagetool_save_subimage() store file_len bytes of data pointed by file_data
189 * into the file name by file_name.
192 * zero in case of success or a negative value if fail.
194 int imagetool_save_subimage(
195 const char *file_name,
200 * imagetool_get_filesize() - Utility function to obtain the size of a file
202 * This function prints a message if an error occurs, showing the error that
205 * @params: mkimage parameters
206 * @fname: filename to check
207 * @return size of file, or -ve value on error
209 int imagetool_get_filesize(struct image_tool_params *params, const char *fname);
212 * imagetool_get_source_date() - Get timestamp for build output.
214 * Gets a timestamp for embedding it in a build output. If set
215 * SOURCE_DATE_EPOCH is used. Else the given fallback value is returned. Prints
216 * an error message if SOURCE_DATE_EPOCH contains an invalid value and returns
219 * @params: mkimage parameters
220 * @fallback: timestamp to use if SOURCE_DATE_EPOCH isn't set
221 * @return timestamp based on SOURCE_DATE_EPOCH
223 time_t imagetool_get_source_date(
224 struct image_tool_params *params,
228 * There is a c file associated with supported image type low level code
229 * for ex. default_image.c, fit_image.c
233 void pbl_load_uboot(int fd, struct image_tool_params *mparams);
235 #define ___cat(a, b) a ## b
236 #define __cat(a, b) ___cat(a, b)
238 /* we need some special handling for this host tool running eventually on
239 * Darwin. The Mach-O section handling is a bit different than ELF section
240 * handling. The differnces in detail are:
241 * a) we have segments which have sections
242 * b) we need a API call to get the respective section symbols */
243 #if defined(__MACH__)
244 #include <mach-o/getsect.h>
246 #define INIT_SECTION(name) do { \
247 unsigned long name ## _len; \
248 char *__cat(pstart_, name) = getsectdata("__TEXT", \
249 #name, &__cat(name, _len)); \
250 char *__cat(pstop_, name) = __cat(pstart_, name) + \
252 __cat(__start_, name) = (void *)__cat(pstart_, name); \
253 __cat(__stop_, name) = (void *)__cat(pstop_, name); \
255 #define SECTION(name) __attribute__((section("__TEXT, " #name)))
257 struct image_type_params **__start_image_type, **__stop_image_type;
259 #define INIT_SECTION(name) /* no-op for ELF */
260 #define SECTION(name) __attribute__((section(#name)))
262 /* We construct a table of pointers in an ELF section (pointers generally
263 * go unpadded by gcc). ld creates boundary syms for us. */
264 extern struct image_type_params *__start_image_type[], *__stop_image_type[];
265 #endif /* __MACH__ */
268 # if __GNUC__ == 3 && __GNUC_MINOR__ < 3
269 # define __used __attribute__((__unused__))
271 # define __used __attribute__((__used__))
275 #define U_BOOT_IMAGE_TYPE( \
289 static struct image_type_params __cat(image_type_, _id) = \
292 .header_size = _header_size, \
294 .check_params = _check_params, \
295 .verify_header = _verify_header, \
296 .print_header = _print_header, \
297 .set_header = _set_header, \
298 .extract_subimage = _extract_subimage, \
299 .check_image_type = _check_image_type, \
300 .fflag_handle = _fflag_handle, \
301 .vrec_header = _vrec_header \
303 static struct image_type_params *SECTION(image_type) __used \
304 __cat(image_type_ptr_, _id) = &__cat(image_type_, _id)
306 #endif /* _IMAGETOOL_H_ */