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
31 * This structure defines all such variables those are initialized by
32 * mkimage and dumpimage main core and need to be referred by image
33 * type specific functions
35 struct image_tool_params {
57 const char *outfile; /* Output filename */
58 const char *keydir; /* Directory holding private keys */
59 const char *keydest; /* Destination .dtb for public key */
60 const char *comment; /* Comment to add to signature node */
61 int require_keys; /* 1 to mark signing keys as 'required' */
62 int file_size; /* Total size of output file */
63 int orig_file_size; /* Original size for file before padding */
64 int fit_image_type; /* Image type to put into the FIT */
68 * image type specific variables and callback functions
70 struct image_type_params {
71 /* name is an identification tag string for added support */
74 * header size is local to the specific image type to be supported,
75 * mkimage core treats this as number of bytes
78 /* Image type header pointer */
81 * There are several arguments that are passed on the command line
82 * and are registered as flags in image_tool_params structure.
83 * This callback function can be used to check the passed arguments
84 * are in-lined with the image type to be supported
86 * Returns 1 if parameter check is successful
88 int (*check_params) (struct image_tool_params *);
90 * This function is used by list command (i.e. mkimage -l <filename>)
91 * image type verification code must be put here
93 * Returns 0 if image header verification is successful
94 * otherwise, returns respective negative error codes
96 int (*verify_header) (unsigned char *, int, struct image_tool_params *);
97 /* Prints image information abstracting from image header */
98 void (*print_header) (const void *);
100 * The header or image contents need to be set as per image type to
101 * be generated using this callback function.
102 * further output file post processing (for ex. checksum calculation,
103 * padding bytes etc..) can also be done in this callback function.
105 void (*set_header) (void *, struct stat *, int,
106 struct image_tool_params *);
108 * This function is used by the command to retrieve a component
109 * (sub-image) from the image (i.e. dumpimage -i <image> -p <position>
111 * Thus the code to extract a file from an image must be put here.
113 * Returns 0 if the file was successfully retrieved from the image,
114 * or a negative value on error.
116 int (*extract_subimage)(void *, struct image_tool_params *);
118 * Some image generation support for ex (default image type) supports
119 * more than one type_ids, this callback function is used to check
120 * whether input (-T <image_type>) is supported by registered image
121 * generation/list low level code
123 int (*check_image_type) (uint8_t);
124 /* This callback function will be executed if fflag is defined */
125 int (*fflag_handle) (struct image_tool_params *);
127 * This callback function will be executed for variable size record
128 * It is expected to build this header in memory and return its length
129 * and a pointer to it by using image_type_params.header_size and
130 * image_type_params.hdr. The return value shall indicate if an
131 * additional padding should be used when copying the data image
132 * by returning the padding length.
134 int (*vrec_header) (struct image_tool_params *,
135 struct image_type_params *);
139 * imagetool_get_type() - find the image type params for a given image type
141 * It scans all registers image type supports
142 * checks the input type for each supported image type
145 * returns respective image_type_params pointer if success
146 * if input type_id is not supported by any of image_type_support
149 struct image_type_params *imagetool_get_type(int type);
152 * imagetool_verify_print_header() - verifies the image header
154 * Scan registered image types and verify the image_header for each
155 * supported image type. If verification is successful, this prints
156 * the respective header.
158 * @return 0 on success, negative if input image format does not match with
159 * any of supported image types
161 int imagetool_verify_print_header(
164 struct image_type_params *tparams,
165 struct image_tool_params *params);
168 * imagetool_save_subimage - store data into a file
169 * @file_name: name of the destination file
170 * @file_data: data to be written
171 * @file_len: the amount of data to store
173 * imagetool_save_subimage() store file_len bytes of data pointed by file_data
174 * into the file name by file_name.
177 * zero in case of success or a negative value if fail.
179 int imagetool_save_subimage(
180 const char *file_name,
185 * imagetool_get_filesize() - Utility function to obtain the size of a file
187 * This function prints a message if an error occurs, showing the error that
190 * @params: mkimage parameters
191 * @fname: filename to check
192 * @return size of file, or -ve value on error
194 int imagetool_get_filesize(struct image_tool_params *params, const char *fname);
197 * There is a c file associated with supported image type low level code
198 * for ex. default_image.c, fit_image.c
202 void pbl_load_uboot(int fd, struct image_tool_params *mparams);
204 #define ___cat(a, b) a ## b
205 #define __cat(a, b) ___cat(a, b)
207 /* we need some special handling for this host tool running eventually on
208 * Darwin. The Mach-O section handling is a bit different than ELF section
209 * handling. The differnces in detail are:
210 * a) we have segments which have sections
211 * b) we need a API call to get the respective section symbols */
212 #if defined(__MACH__)
213 #include <mach-o/getsect.h>
215 #define INIT_SECTION(name) do { \
216 unsigned long name ## _len; \
217 char *__cat(pstart_, name) = getsectdata("__TEXT", \
218 #name, &__cat(name, _len)); \
219 char *__cat(pstop_, name) = __cat(pstart_, name) + \
221 __cat(__start_, name) = (void *)__cat(pstart_, name); \
222 __cat(__stop_, name) = (void *)__cat(pstop_, name); \
224 #define SECTION(name) __attribute__((section("__TEXT, " #name)))
226 struct image_type_params **__start_image_type, **__stop_image_type;
228 #define INIT_SECTION(name) /* no-op for ELF */
229 #define SECTION(name) __attribute__((section(#name)))
231 /* We construct a table of pointers in an ELF section (pointers generally
232 * go unpadded by gcc). ld creates boundary syms for us. */
233 extern struct image_type_params *__start_image_type[], *__stop_image_type[];
234 #endif /* __MACH__ */
237 # if __GNUC__ == 3 && __GNUC_MINOR__ < 3
238 # define __used __attribute__((__unused__))
240 # define __used __attribute__((__used__))
244 #define U_BOOT_IMAGE_TYPE( \
258 static struct image_type_params __cat(image_type_, _id) = \
261 .header_size = _header_size, \
263 .check_params = _check_params, \
264 .verify_header = _verify_header, \
265 .print_header = _print_header, \
266 .set_header = _set_header, \
267 .extract_subimage = _extract_subimage, \
268 .check_image_type = _check_image_type, \
269 .fflag_handle = _fflag_handle, \
270 .vrec_header = _vrec_header \
272 static struct image_type_params *SECTION(image_type) __used \
273 __cat(image_type_ptr_, _id) = &__cat(image_type_, _id)
275 #endif /* _IMAGETOOL_H_ */