4 * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
6 * SPDX-License-Identifier: GPL-2.0+
12 #include "os_support.h"
21 #include <u-boot/sha1.h>
25 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
27 #define IH_ARCH_DEFAULT IH_ARCH_INVALID
30 * This structure defines all such variables those are initialized by
31 * mkimage and dumpimage main core and need to be referred by image
32 * type specific functions
34 struct image_tool_params {
56 const char *outfile; /* Output filename */
57 const char *keydir; /* Directory holding private keys */
58 const char *keydest; /* Destination .dtb for public key */
59 const char *comment; /* Comment to add to signature node */
60 int require_keys; /* 1 to mark signing keys as 'required' */
64 * image type specific variables and callback functions
66 struct image_type_params {
67 /* name is an identification tag string for added support */
70 * header size is local to the specific image type to be supported,
71 * mkimage core treats this as number of bytes
74 /* Image type header pointer */
77 * There are several arguments that are passed on the command line
78 * and are registered as flags in image_tool_params structure.
79 * This callback function can be used to check the passed arguments
80 * are in-lined with the image type to be supported
82 * Returns 1 if parameter check is successful
84 int (*check_params) (struct image_tool_params *);
86 * This function is used by list command (i.e. mkimage -l <filename>)
87 * image type verification code must be put here
89 * Returns 0 if image header verification is successful
90 * otherwise, returns respective negative error codes
92 int (*verify_header) (unsigned char *, int, struct image_tool_params *);
93 /* Prints image information abstracting from image header */
94 void (*print_header) (const void *);
96 * The header or image contents need to be set as per image type to
97 * be generated using this callback function.
98 * further output file post processing (for ex. checksum calculation,
99 * padding bytes etc..) can also be done in this callback function.
101 void (*set_header) (void *, struct stat *, int,
102 struct image_tool_params *);
104 * This function is used by the command to retrieve a component
105 * (sub-image) from the image (i.e. dumpimage -i <image> -p <position>
107 * Thus the code to extract a file from an image must be put here.
109 * Returns 0 if the file was successfully retrieved from the image,
110 * or a negative value on error.
112 int (*extract_subimage)(void *, struct image_tool_params *);
114 * Some image generation support for ex (default image type) supports
115 * more than one type_ids, this callback function is used to check
116 * whether input (-T <image_type>) is supported by registered image
117 * generation/list low level code
119 int (*check_image_type) (uint8_t);
120 /* This callback function will be executed if fflag is defined */
121 int (*fflag_handle) (struct image_tool_params *);
123 * This callback function will be executed for variable size record
124 * It is expected to build this header in memory and return its length
125 * and a pointer to it by using image_type_params.header_size and
126 * image_type_params.hdr. The return value shall indicate if an
127 * additional padding should be used when copying the data image
128 * by returning the padding length.
130 int (*vrec_header) (struct image_tool_params *,
131 struct image_type_params *);
135 * imagetool_get_type() - find the image type params for a given image type
137 * It scans all registers image type supports
138 * checks the input type for each supported image type
141 * returns respective image_type_params pointer if success
142 * if input type_id is not supported by any of image_type_support
145 struct image_type_params *imagetool_get_type(int type);
148 * imagetool_verify_print_header() - verifies the image header
150 * Scan registered image types and verify the image_header for each
151 * supported image type. If verification is successful, this prints
152 * the respective header.
154 * @return 0 on success, negative if input image format does not match with
155 * any of supported image types
157 int imagetool_verify_print_header(
160 struct image_type_params *tparams,
161 struct image_tool_params *params);
164 * imagetool_save_subimage - store data into a file
165 * @file_name: name of the destination file
166 * @file_data: data to be written
167 * @file_len: the amount of data to store
169 * imagetool_save_subimage() store file_len bytes of data pointed by file_data
170 * into the file name by file_name.
173 * zero in case of success or a negative value if fail.
175 int imagetool_save_subimage(
176 const char *file_name,
181 * There is a c file associated with supported image type low level code
182 * for ex. default_image.c, fit_image.c
186 void pbl_load_uboot(int fd, struct image_tool_params *mparams);
188 #define ___cat(a, b) a ## b
189 #define __cat(a, b) ___cat(a, b)
191 /* we need some special handling for this host tool running eventually on
192 * Darwin. The Mach-O section handling is a bit different than ELF section
193 * handling. The differnces in detail are:
194 * a) we have segments which have sections
195 * b) we need a API call to get the respective section symbols */
196 #if defined(__MACH__)
197 #include <mach-o/getsect.h>
199 #define INIT_SECTION(name) do { \
200 unsigned long name ## _len; \
201 char *__cat(pstart_, name) = getsectdata("__TEXT", \
202 #name, &__cat(name, _len)); \
203 char *__cat(pstop_, name) = __cat(pstart_, name) + \
205 __cat(__start_, name) = (void *)__cat(pstart_, name); \
206 __cat(__stop_, name) = (void *)__cat(pstop_, name); \
208 #define SECTION(name) __attribute__((section("__TEXT, " #name)))
210 struct image_type_params **__start_image_type, **__stop_image_type;
212 #define INIT_SECTION(name) /* no-op for ELF */
213 #define SECTION(name) __attribute__((section(#name)))
215 /* We construct a table of pointers in an ELF section (pointers generally
216 * go unpadded by gcc). ld creates boundary syms for us. */
217 extern struct image_type_params *__start_image_type[], *__stop_image_type[];
218 #endif /* __MACH__ */
221 # if __GNUC__ == 3 && __GNUC_MINOR__ < 3
222 # define __used __attribute__((__unused__))
224 # define __used __attribute__((__used__))
228 #define U_BOOT_IMAGE_TYPE( \
242 static struct image_type_params __cat(image_type_, _id) = \
245 .header_size = _header_size, \
247 .check_params = _check_params, \
248 .verify_header = _verify_header, \
249 .print_header = _print_header, \
250 .set_header = _set_header, \
251 .extract_subimage = _extract_subimage, \
252 .check_image_type = _check_image_type, \
253 .fflag_handle = _fflag_handle, \
254 .vrec_header = _vrec_header \
256 static struct image_type_params *SECTION(image_type) __used \
257 __cat(image_type_ptr_, _id) = &__cat(image_type_, _id)
259 #endif /* _IMAGETOOL_H_ */