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 struct content_info *content_head; /* List of files to include */
74 struct content_info *content_tail;
75 bool external_data; /* Store data outside the FIT */
79 * image type specific variables and callback functions
81 struct image_type_params {
82 /* name is an identification tag string for added support */
85 * header size is local to the specific image type to be supported,
86 * mkimage core treats this as number of bytes
89 /* Image type header pointer */
92 * There are several arguments that are passed on the command line
93 * and are registered as flags in image_tool_params structure.
94 * This callback function can be used to check the passed arguments
95 * are in-lined with the image type to be supported
97 * Returns 1 if parameter check is successful
99 int (*check_params) (struct image_tool_params *);
101 * This function is used by list command (i.e. mkimage -l <filename>)
102 * image type verification code must be put here
104 * Returns 0 if image header verification is successful
105 * otherwise, returns respective negative error codes
107 int (*verify_header) (unsigned char *, int, struct image_tool_params *);
108 /* Prints image information abstracting from image header */
109 void (*print_header) (const void *);
111 * The header or image contents need to be set as per image type to
112 * be generated using this callback function.
113 * further output file post processing (for ex. checksum calculation,
114 * padding bytes etc..) can also be done in this callback function.
116 void (*set_header) (void *, struct stat *, int,
117 struct image_tool_params *);
119 * This function is used by the command to retrieve a component
120 * (sub-image) from the image (i.e. dumpimage -i <image> -p <position>
122 * Thus the code to extract a file from an image must be put here.
124 * Returns 0 if the file was successfully retrieved from the image,
125 * or a negative value on error.
127 int (*extract_subimage)(void *, struct image_tool_params *);
129 * Some image generation support for ex (default image type) supports
130 * more than one type_ids, this callback function is used to check
131 * whether input (-T <image_type>) is supported by registered image
132 * generation/list low level code
134 int (*check_image_type) (uint8_t);
135 /* This callback function will be executed if fflag is defined */
136 int (*fflag_handle) (struct image_tool_params *);
138 * This callback function will be executed for variable size record
139 * It is expected to build this header in memory and return its length
140 * and a pointer to it by using image_type_params.header_size and
141 * image_type_params.hdr. The return value shall indicate if an
142 * additional padding should be used when copying the data image
143 * by returning the padding length.
145 int (*vrec_header) (struct image_tool_params *,
146 struct image_type_params *);
150 * imagetool_get_type() - find the image type params for a given image type
152 * It scans all registers image type supports
153 * checks the input type for each supported image type
156 * returns respective image_type_params pointer if success
157 * if input type_id is not supported by any of image_type_support
160 struct image_type_params *imagetool_get_type(int type);
163 * imagetool_verify_print_header() - verifies the image header
165 * Scan registered image types and verify the image_header for each
166 * supported image type. If verification is successful, this prints
167 * the respective header.
169 * @return 0 on success, negative if input image format does not match with
170 * any of supported image types
172 int imagetool_verify_print_header(
175 struct image_type_params *tparams,
176 struct image_tool_params *params);
179 * imagetool_save_subimage - store data into a file
180 * @file_name: name of the destination file
181 * @file_data: data to be written
182 * @file_len: the amount of data to store
184 * imagetool_save_subimage() store file_len bytes of data pointed by file_data
185 * into the file name by file_name.
188 * zero in case of success or a negative value if fail.
190 int imagetool_save_subimage(
191 const char *file_name,
196 * imagetool_get_filesize() - Utility function to obtain the size of a file
198 * This function prints a message if an error occurs, showing the error that
201 * @params: mkimage parameters
202 * @fname: filename to check
203 * @return size of file, or -ve value on error
205 int imagetool_get_filesize(struct image_tool_params *params, const char *fname);
208 * There is a c file associated with supported image type low level code
209 * for ex. default_image.c, fit_image.c
213 void pbl_load_uboot(int fd, struct image_tool_params *mparams);
215 #define ___cat(a, b) a ## b
216 #define __cat(a, b) ___cat(a, b)
218 /* we need some special handling for this host tool running eventually on
219 * Darwin. The Mach-O section handling is a bit different than ELF section
220 * handling. The differnces in detail are:
221 * a) we have segments which have sections
222 * b) we need a API call to get the respective section symbols */
223 #if defined(__MACH__)
224 #include <mach-o/getsect.h>
226 #define INIT_SECTION(name) do { \
227 unsigned long name ## _len; \
228 char *__cat(pstart_, name) = getsectdata("__TEXT", \
229 #name, &__cat(name, _len)); \
230 char *__cat(pstop_, name) = __cat(pstart_, name) + \
232 __cat(__start_, name) = (void *)__cat(pstart_, name); \
233 __cat(__stop_, name) = (void *)__cat(pstop_, name); \
235 #define SECTION(name) __attribute__((section("__TEXT, " #name)))
237 struct image_type_params **__start_image_type, **__stop_image_type;
239 #define INIT_SECTION(name) /* no-op for ELF */
240 #define SECTION(name) __attribute__((section(#name)))
242 /* We construct a table of pointers in an ELF section (pointers generally
243 * go unpadded by gcc). ld creates boundary syms for us. */
244 extern struct image_type_params *__start_image_type[], *__stop_image_type[];
245 #endif /* __MACH__ */
248 # if __GNUC__ == 3 && __GNUC_MINOR__ < 3
249 # define __used __attribute__((__unused__))
251 # define __used __attribute__((__used__))
255 #define U_BOOT_IMAGE_TYPE( \
269 static struct image_type_params __cat(image_type_, _id) = \
272 .header_size = _header_size, \
274 .check_params = _check_params, \
275 .verify_header = _verify_header, \
276 .print_header = _print_header, \
277 .set_header = _set_header, \
278 .extract_subimage = _extract_subimage, \
279 .check_image_type = _check_image_type, \
280 .fflag_handle = _fflag_handle, \
281 .vrec_header = _vrec_header \
283 static struct image_type_params *SECTION(image_type) __used \
284 __cat(image_type_ptr_, _id) = &__cat(image_type_, _id)
286 #endif /* _IMAGETOOL_H_ */