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_...) */
42 /* FIT auto generation modes */
44 AF_OFF = 0, /* Needs .its or existing FIT to be provided */
45 AF_HASHED_IMG, /* Auto FIT with crc32 hashed images subnodes */
46 AF_SIGNED_IMG, /* Auto FIT with signed images subnodes */
47 AF_SIGNED_CONF, /* Auto FIT with sha1 images and signed configs */
51 * This structure defines all such variables those are initialized by
52 * mkimage and dumpimage main core and need to be referred by image
53 * type specific functions
55 struct image_tool_params {
78 const char *outfile; /* Output filename */
79 const char *keydir; /* Directory holding private keys */
80 const char *keydest; /* Destination .dtb for public key */
81 const char *keyfile; /* Filename of private or public key */
82 const char *keyname; /* Key name "hint" */
83 const char *comment; /* Comment to add to signature node */
84 /* Algorithm name to use for hashing/signing or NULL to use the one
85 * specified in the its */
86 const char *algo_name;
87 int require_keys; /* 1 to mark signing keys as 'required' */
88 int file_size; /* Total size of output file */
89 int orig_file_size; /* Original size for file before padding */
90 enum af_mode auto_fit; /* Automatically create the FIT */
91 int fit_image_type; /* Image type to put into the FIT */
92 char *fit_ramdisk; /* Ramdisk file to include */
93 struct content_info *content_head; /* List of files to include */
94 struct content_info *content_tail;
95 bool external_data; /* Store data outside the FIT */
96 bool quiet; /* Don't output text in normal operation */
97 unsigned int external_offset; /* Add padding to external data */
98 int bl_len; /* Block length in byte for external data */
99 const char *engine_id; /* Engine to use for signing */
100 bool reset_timestamp; /* Reset the timestamp on an existing image */
101 struct image_summary summary; /* results of signing process */
105 * image type specific variables and callback functions
107 struct image_type_params {
108 /* name is an identification tag string for added support */
111 * header size is local to the specific image type to be supported,
112 * mkimage core treats this as number of bytes
114 uint32_t header_size;
115 /* Image type header pointer */
118 * There are several arguments that are passed on the command line
119 * and are registered as flags in image_tool_params structure.
120 * This callback function can be used to check the passed arguments
121 * are in-lined with the image type to be supported
123 * Returns 1 if parameter check is successful
125 int (*check_params) (struct image_tool_params *);
127 * This function is used by list command (i.e. mkimage -l <filename>)
128 * image type verification code must be put here
130 * Returns 0 if image header verification is successful
131 * otherwise, returns respective negative error codes
133 int (*verify_header) (unsigned char *, int, struct image_tool_params *);
134 /* Prints image information abstracting from image header */
135 void (*print_header) (const void *, struct image_tool_params *);
137 * The header or image contents need to be set as per image type to
138 * be generated using this callback function.
139 * further output file post processing (for ex. checksum calculation,
140 * padding bytes etc..) can also be done in this callback function.
142 void (*set_header) (void *, struct stat *, int,
143 struct image_tool_params *);
145 * This function is used by the command to retrieve a component
146 * (sub-image) from the image (i.e. dumpimage -p <position>
147 * -o <component-outfile> <image>). Thus the code to extract a file
148 * from an image must be put here.
150 * Returns 0 if the file was successfully retrieved from the image,
151 * or a negative value on error.
153 int (*extract_subimage)(void *, struct image_tool_params *);
155 * Some image generation support for ex (default image type) supports
156 * more than one type_ids, this callback function is used to check
157 * whether input (-T <image_type>) is supported by registered image
158 * generation/list low level code
160 int (*check_image_type) (uint8_t);
161 /* This callback function will be executed if fflag is defined */
162 int (*fflag_handle) (struct image_tool_params *);
164 * This callback function will be executed for variable size record
165 * It is expected to build this header in memory and return its length
166 * and a pointer to it by using image_type_params.header_size and
167 * image_type_params.hdr. The return value shall indicate if an
168 * additional padding should be used when copying the data image
169 * by returning the padding length.
171 int (*vrec_header) (struct image_tool_params *,
172 struct image_type_params *);
176 * imagetool_get_type() - find the image type params for a given image type
178 * It scans all registers image type supports
179 * checks the input type for each supported image type
182 * returns respective image_type_params pointer if success
183 * if input type_id is not supported by any of image_type_support
186 struct image_type_params *imagetool_get_type(int type);
189 * imagetool_verify_print_header() - verifies the image header
191 * Verify the image_header for the image type given by tparams.
192 * If tparams is NULL then scan registered image types and verify the
193 * image_header for each supported image type.
194 * If verification is successful, this prints the respective header.
195 * @ptr: pointer the the image header
196 * @sbuf: stat information about the file pointed to by ptr
197 * @tparams: image type parameters or NULL
198 * @params: mkimage parameters
200 * Return: 0 on success, negative if input image format does not match with
201 * the given image type
203 int imagetool_verify_print_header(
206 struct image_type_params *tparams,
207 struct image_tool_params *params);
210 * imagetool_save_subimage - store data into a file
211 * @file_name: name of the destination file
212 * @file_data: data to be written
213 * @file_len: the amount of data to store
215 * imagetool_save_subimage() store file_len bytes of data pointed by file_data
216 * into the file name by file_name.
219 * zero in case of success or a negative value if fail.
221 int imagetool_save_subimage(
222 const char *file_name,
227 * imagetool_get_filesize() - Utility function to obtain the size of a file
229 * This function prints a message if an error occurs, showing the error that
232 * @params: mkimage parameters
233 * @fname: filename to check
234 * Return: size of file, or -ve value on error
236 int imagetool_get_filesize(struct image_tool_params *params, const char *fname);
239 * imagetool_get_source_date() - Get timestamp for build output.
241 * Gets a timestamp for embedding it in a build output. If set
242 * SOURCE_DATE_EPOCH is used. Else the given fallback value is returned. Prints
243 * an error message if SOURCE_DATE_EPOCH contains an invalid value and returns
246 * @cmdname: command name
247 * @fallback: timestamp to use if SOURCE_DATE_EPOCH isn't set
248 * Return: timestamp based on SOURCE_DATE_EPOCH
250 time_t imagetool_get_source_date(
255 * There is a c file associated with supported image type low level code
256 * 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>
275 #include <mach-o/dyld.h>
277 #define INIT_SECTION(name) do { \
278 unsigned long name ## _len; \
279 char *__cat(pstart_, name) = getsectdata("__DATA", \
280 #name, &__cat(name, _len)); \
281 __cat(pstart_, name) += _dyld_get_image_vmaddr_slide(0);\
282 char *__cat(pstop_, name) = __cat(pstart_, name) + \
284 __cat(__start_, name) = (void *)__cat(pstart_, name); \
285 __cat(__stop_, name) = (void *)__cat(pstop_, name); \
287 #define SECTION(name) __attribute__((section("__DATA, " #name)))
289 struct image_type_params **__start_image_type, **__stop_image_type;
291 #define INIT_SECTION(name) /* no-op for ELF */
292 #define SECTION(name) __attribute__((section(#name)))
294 /* We construct a table of pointers in an ELF section (pointers generally
295 * go unpadded by gcc). ld creates boundary syms for us. */
296 extern struct image_type_params *__start_image_type[], *__stop_image_type[];
297 #endif /* __MACH__ */
300 # if __GNUC__ == 3 && __GNUC_MINOR__ < 3
301 # define __used __attribute__((__unused__))
303 # define __used __attribute__((__used__))
307 #define U_BOOT_IMAGE_TYPE( \
321 static struct image_type_params __cat(image_type_, _id) = \
324 .header_size = _header_size, \
326 .check_params = _check_params, \
327 .verify_header = _verify_header, \
328 .print_header = _print_header, \
329 .set_header = _set_header, \
330 .extract_subimage = _extract_subimage, \
331 .check_image_type = _check_image_type, \
332 .fflag_handle = _fflag_handle, \
333 .vrec_header = _vrec_header \
335 static struct image_type_params *SECTION(image_type) __used \
336 __cat(image_type_ptr_, _id) = &__cat(image_type_, _id)
338 #endif /* _IMAGETOOL_H_ */