2 * Copyright 2012 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
12 * Initialize to an invalid value.
14 static uint32_t next_pbl_cmd
= 0x82000000;
16 * need to store all bytes in memory for calculating crc32, then write the
17 * bytes to image file for PBL boot.
19 static unsigned char mem_buf
[1000000];
20 static unsigned char *pmem_buf
= mem_buf
;
22 static char *fname
= "Unknown";
23 static int lineno
= -1;
24 static struct pbl_header pblimage_header
;
30 } endian_test
= { {'l', '?', '?', 'b'} };
32 #define ENDIANNESS ((char)endian_test.l)
35 * The PBL can load up to 64 bytes at a time, so we split the U-Boot
36 * image into 64 byte chunks. PBL needs a command for each piece, of
37 * the form "81xxxxxx", where "xxxxxx" is the offset. Calculate the
38 * start offset by subtracting the size of the u-boot image from the
39 * top of the allowable 24-bit range.
41 static void init_next_pbl_cmd(FILE *fp_uboot
)
44 int fd
= fileno(fp_uboot
);
46 if (fstat(fd
, &st
) == -1) {
47 printf("Error: Could not determine u-boot image size. %s\n",
52 next_pbl_cmd
= 0x82000000 - st
.st_size
;
55 static void generate_pbl_cmd(void)
57 uint32_t val
= next_pbl_cmd
;
61 for (i
= 3; i
>= 0; i
--) {
62 *pmem_buf
++ = (val
>> (i
* 8)) & 0xff;
67 static void pbl_fget(size_t size
, FILE *stream
)
72 while (size
&& (c_temp
= fgetc(stream
)) != EOF
) {
73 c
= (unsigned char)c_temp
;
80 /* load split u-boot with PBI command 81xxxxxx. */
81 static void load_uboot(FILE *fp_uboot
)
83 init_next_pbl_cmd(fp_uboot
);
84 while (next_pbl_cmd
< 0x82000000) {
86 pbl_fget(64, fp_uboot
);
90 static void check_get_hexval(char *token
)
95 if (!sscanf(token
, "%x", &hexval
)) {
96 printf("Error:%s[%d] - Invalid hex data(%s)\n", fname
,
100 for (i
= 3; i
>= 0; i
--) {
101 *pmem_buf
++ = (hexval
>> (i
* 8)) & 0xff;
106 static void pbl_parser(char *name
)
110 char *token
, *saveptr1
, *saveptr2
;
114 fd
= fopen(name
, "r");
116 printf("Error:%s - Can't open\n", fname
);
120 while ((getline(&line
, &len
, fd
)) > 0) {
122 token
= strtok_r(line
, "\r\n", &saveptr1
);
123 /* drop all lines with zero tokens (= empty lines) */
126 for (line
= token
;; line
= NULL
) {
127 token
= strtok_r(line
, " \t", &saveptr2
);
130 /* Drop all text starting with '#' as comments */
133 check_get_hexval(token
);
141 static uint32_t reverse_byte(uint32_t val
)
148 p1
= (unsigned char *)&temp
;
149 for (j
= 3; j
>= 0; j
--)
150 *p1
++ = (val
>> (j
* 8)) & 0xff;
154 /* write end command and crc command to memory. */
155 static void add_end_cmd(void)
157 uint32_t pbl_end_cmd
[4] = {0x09138000, 0x00000000,
158 0x091380c0, 0x00000000};
161 unsigned char *p
= (unsigned char *)&pbl_end_cmd
;
163 if (ENDIANNESS
== 'l') {
164 for (i
= 0; i
< 4; i
++)
165 pbl_end_cmd
[i
] = reverse_byte(pbl_end_cmd
[i
]);
168 for (i
= 0; i
< 16; i
++) {
173 /* Add PBI CRC command. */
180 /* calculated CRC32 and write it to memory. */
181 crc32_pbl
= pbl_crc32(0, (const char *)mem_buf
, pbl_size
);
182 *pmem_buf
++ = (crc32_pbl
>> 24) & 0xff;
183 *pmem_buf
++ = (crc32_pbl
>> 16) & 0xff;
184 *pmem_buf
++ = (crc32_pbl
>> 8) & 0xff;
185 *pmem_buf
++ = (crc32_pbl
) & 0xff;
188 if ((pbl_size
% 16) != 0) {
189 for (i
= 0; i
< 8; i
++) {
194 if ((pbl_size
% 16 != 0)) {
195 printf("Error: Bad size of image file\n");
200 void pbl_load_uboot(int ifd
, struct image_tool_params
*params
)
205 /* parse the rcw.cfg file. */
206 pbl_parser(params
->imagename
);
208 /* parse the pbi.cfg file. */
209 pbl_parser(params
->imagename2
);
211 fp_uboot
= fopen(params
->datafile
, "r");
212 if (fp_uboot
== NULL
) {
213 printf("Error: %s open failed\n", params
->datafile
);
217 load_uboot(fp_uboot
);
220 lseek(ifd
, 0, SEEK_SET
);
223 if (write(ifd
, (const void *)&mem_buf
, size
) != size
) {
224 fprintf(stderr
, "Write error on %s: %s\n",
225 params
->imagefile
, strerror(errno
));
230 static int pblimage_check_image_types(uint8_t type
)
232 if (type
== IH_TYPE_PBLIMAGE
)
238 static int pblimage_verify_header(unsigned char *ptr
, int image_size
,
239 struct image_tool_params
*params
)
241 struct pbl_header
*pbl_hdr
= (struct pbl_header
*) ptr
;
243 /* Only a few checks can be done: search for magic numbers */
244 if (ENDIANNESS
== 'l') {
245 if (pbl_hdr
->preamble
!= reverse_byte(RCW_PREAMBLE
))
246 return -FDT_ERR_BADSTRUCTURE
;
248 if (pbl_hdr
->rcwheader
!= reverse_byte(RCW_HEADER
))
249 return -FDT_ERR_BADSTRUCTURE
;
251 if (pbl_hdr
->preamble
!= RCW_PREAMBLE
)
252 return -FDT_ERR_BADSTRUCTURE
;
254 if (pbl_hdr
->rcwheader
!= RCW_HEADER
)
255 return -FDT_ERR_BADSTRUCTURE
;
260 static void pblimage_print_header(const void *ptr
)
262 printf("Image Type: Freescale PBL Boot Image\n");
265 static void pblimage_set_header(void *ptr
, struct stat
*sbuf
, int ifd
,
266 struct image_tool_params
*params
)
268 /*nothing need to do, pbl_load_uboot takes care of whole file. */
271 /* pblimage parameters */
272 static struct image_type_params pblimage_params
= {
273 .name
= "Freescale PBL Boot Image support",
274 .header_size
= sizeof(struct pbl_header
),
275 .hdr
= (void *)&pblimage_header
,
276 .check_image_type
= pblimage_check_image_types
,
277 .verify_header
= pblimage_verify_header
,
278 .print_header
= pblimage_print_header
,
279 .set_header
= pblimage_set_header
,
282 void init_pbl_image_type(void)
285 register_image_type(&pblimage_params
);