1 /* SPDX-License-Identifier: GPL-2.0+ */
11 #include "os_support.h"
19 #include <sys/types.h>
22 #include <u-boot/sha1.h>
28 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
30 #define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask))
31 #define ALIGN(x, a) __ALIGN_MASK((x), (typeof(x))(a) - 1)
33 #define IH_ARCH_DEFAULT IH_ARCH_INVALID
35 /* Information about a file that needs to be placed into the FIT */
37 struct content_info *next;
38 int type; /* File type (IH_TYPE_...) */
43 * This structure defines all such variables those are initialized by
44 * mkimage and dumpimage main core and need to be referred by image
45 * type specific functions
47 struct image_tool_params {
69 const char *outfile; /* Output filename */
70 const char *keydir; /* Directory holding private keys */
71 const char *keydest; /* Destination .dtb for public key */
72 const char *keyfile; /* Filename of private or public key */
73 const char *comment; /* Comment to add to signature node */
74 /* Algorithm name to use for hashing/signing or NULL to use the one
75 * specified in the its */
76 const char *algo_name;
77 int require_keys; /* 1 to mark signing keys as 'required' */
78 int file_size; /* Total size of output file */
79 int orig_file_size; /* Original size for file before padding */
80 bool auto_its; /* Automatically create the .its file */
81 int fit_image_type; /* Image type to put into the FIT */
82 char *fit_ramdisk; /* Ramdisk file to include */
83 struct content_info *content_head; /* List of files to include */
84 struct content_info *content_tail;
85 bool external_data; /* Store data outside the FIT */
86 bool quiet; /* Don't output text in normal operation */
87 unsigned int external_offset; /* Add padding to external data */
88 int bl_len; /* Block length in byte for external data */
89 const char *engine_id; /* Engine to use for signing */
90 bool reset_timestamp; /* Reset the timestamp on an existing image */
91 struct image_summary summary; /* results of signing process */
95 * image type specific variables and callback functions
97 struct image_type_params {
98 /* name is an identification tag string for added support */
101 * header size is local to the specific image type to be supported,
102 * mkimage core treats this as number of bytes
104 uint32_t header_size;
105 /* Image type header pointer */
108 * There are several arguments that are passed on the command line
109 * and are registered as flags in image_tool_params structure.
110 * This callback function can be used to check the passed arguments
111 * are in-lined with the image type to be supported
113 * Returns 1 if parameter check is successful
115 int (*check_params) (struct image_tool_params *);
117 * This function is used by list command (i.e. mkimage -l <filename>)
118 * image type verification code must be put here
120 * Returns 0 if image header verification is successful
121 * otherwise, returns respective negative error codes
123 int (*verify_header) (unsigned char *, int, struct image_tool_params *);
124 /* Prints image information abstracting from image header */
125 void (*print_header) (const void *);
127 * The header or image contents need to be set as per image type to
128 * be generated using this callback function.
129 * further output file post processing (for ex. checksum calculation,
130 * padding bytes etc..) can also be done in this callback function.
132 void (*set_header) (void *, struct stat *, int,
133 struct image_tool_params *);
135 * This function is used by the command to retrieve a component
136 * (sub-image) from the image (i.e. dumpimage -p <position>
137 * -o <component-outfile> <image>). Thus the code to extract a file
138 * from an image must be put here.
140 * Returns 0 if the file was successfully retrieved from the image,
141 * or a negative value on error.
143 int (*extract_subimage)(void *, struct image_tool_params *);
145 * Some image generation support for ex (default image type) supports
146 * more than one type_ids, this callback function is used to check
147 * whether input (-T <image_type>) is supported by registered image
148 * generation/list low level code
150 int (*check_image_type) (uint8_t);
151 /* This callback function will be executed if fflag is defined */
152 int (*fflag_handle) (struct image_tool_params *);
154 * This callback function will be executed for variable size record
155 * It is expected to build this header in memory and return its length
156 * and a pointer to it by using image_type_params.header_size and
157 * image_type_params.hdr. The return value shall indicate if an
158 * additional padding should be used when copying the data image
159 * by returning the padding length.
161 int (*vrec_header) (struct image_tool_params *,
162 struct image_type_params *);
166 * imagetool_get_type() - find the image type params for a given image type
168 * It scans all registers image type supports
169 * checks the input type for each supported image type
172 * returns respective image_type_params pointer if success
173 * if input type_id is not supported by any of image_type_support
176 struct image_type_params *imagetool_get_type(int type);
179 * imagetool_verify_print_header() - verifies the image header
181 * Verify the image_header for the image type given by tparams.
182 * If tparams is NULL then scan registered image types and verify the
183 * image_header for each supported image type.
184 * If verification is successful, this prints the respective header.
185 * @ptr: pointer the the image header
186 * @sbuf: stat information about the file pointed to by ptr
187 * @tparams: image type parameters or NULL
188 * @params: mkimage parameters
190 * Return: 0 on success, negative if input image format does not match with
191 * the given image type
193 int imagetool_verify_print_header(
196 struct image_type_params *tparams,
197 struct image_tool_params *params);
200 * imagetool_save_subimage - store data into a file
201 * @file_name: name of the destination file
202 * @file_data: data to be written
203 * @file_len: the amount of data to store
205 * imagetool_save_subimage() store file_len bytes of data pointed by file_data
206 * into the file name by file_name.
209 * zero in case of success or a negative value if fail.
211 int imagetool_save_subimage(
212 const char *file_name,
217 * imagetool_get_filesize() - Utility function to obtain the size of a file
219 * This function prints a message if an error occurs, showing the error that
222 * @params: mkimage parameters
223 * @fname: filename to check
224 * Return: size of file, or -ve value on error
226 int imagetool_get_filesize(struct image_tool_params *params, const char *fname);
229 * imagetool_get_source_date() - Get timestamp for build output.
231 * Gets a timestamp for embedding it in a build output. If set
232 * SOURCE_DATE_EPOCH is used. Else the given fallback value is returned. Prints
233 * an error message if SOURCE_DATE_EPOCH contains an invalid value and returns
236 * @cmdname: command name
237 * @fallback: timestamp to use if SOURCE_DATE_EPOCH isn't set
238 * Return: timestamp based on SOURCE_DATE_EPOCH
240 time_t imagetool_get_source_date(
245 * There is a c file associated with supported image type low level code
246 * for ex. default_image.c, fit_image.c
250 void pbl_load_uboot(int fd, struct image_tool_params *mparams);
251 int zynqmpbif_copy_image(int fd, struct image_tool_params *mparams);
252 int imx8image_copy_image(int fd, struct image_tool_params *mparams);
253 int imx8mimage_copy_image(int fd, struct image_tool_params *mparams);
254 int rockchip_copy_image(int fd, struct image_tool_params *mparams);
256 #define ___cat(a, b) a ## b
257 #define __cat(a, b) ___cat(a, b)
259 /* we need some special handling for this host tool running eventually on
260 * Darwin. The Mach-O section handling is a bit different than ELF section
261 * handling. The differnces in detail are:
262 * a) we have segments which have sections
263 * b) we need a API call to get the respective section symbols */
264 #if defined(__MACH__)
265 #include <mach-o/getsect.h>
266 #include <mach-o/dyld.h>
268 #define INIT_SECTION(name) do { \
269 unsigned long name ## _len; \
270 char *__cat(pstart_, name) = getsectdata("__DATA", \
271 #name, &__cat(name, _len)); \
272 __cat(pstart_, name) += _dyld_get_image_vmaddr_slide(0);\
273 char *__cat(pstop_, name) = __cat(pstart_, name) + \
275 __cat(__start_, name) = (void *)__cat(pstart_, name); \
276 __cat(__stop_, name) = (void *)__cat(pstop_, name); \
278 #define SECTION(name) __attribute__((section("__DATA, " #name)))
280 struct image_type_params **__start_image_type, **__stop_image_type;
282 #define INIT_SECTION(name) /* no-op for ELF */
283 #define SECTION(name) __attribute__((section(#name)))
285 /* We construct a table of pointers in an ELF section (pointers generally
286 * go unpadded by gcc). ld creates boundary syms for us. */
287 extern struct image_type_params *__start_image_type[], *__stop_image_type[];
288 #endif /* __MACH__ */
291 # if __GNUC__ == 3 && __GNUC_MINOR__ < 3
292 # define __used __attribute__((__unused__))
294 # define __used __attribute__((__used__))
298 #define U_BOOT_IMAGE_TYPE( \
312 static struct image_type_params __cat(image_type_, _id) = \
315 .header_size = _header_size, \
317 .check_params = _check_params, \
318 .verify_header = _verify_header, \
319 .print_header = _print_header, \
320 .set_header = _set_header, \
321 .extract_subimage = _extract_subimage, \
322 .check_image_type = _check_image_type, \
323 .fflag_handle = _fflag_handle, \
324 .vrec_header = _vrec_header \
326 static struct image_type_params *SECTION(image_type) __used \
327 __cat(image_type_ptr_, _id) = &__cat(image_type_, _id)
329 #endif /* _IMAGETOOL_H_ */