2 * Copyright 2012 Freescale Semiconductor, Inc.
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 * Initialize to an invalid value.
31 static uint32_t next_pbl_cmd
= 0x82000000;
33 * need to store all bytes in memory for calculating crc32, then write the
34 * bytes to image file for PBL boot.
36 static unsigned char mem_buf
[1000000];
37 static unsigned char *pmem_buf
= mem_buf
;
39 static char *fname
= "Unknown";
40 static int lineno
= -1;
41 static struct pbl_header pblimage_header
;
47 } endian_test
= { {'l', '?', '?', 'b'} };
49 #define ENDIANNESS ((char)endian_test.l)
52 * The PBL can load up to 64 bytes at a time, so we split the U-Boot
53 * image into 64 byte chunks. PBL needs a command for each piece, of
54 * the form "81xxxxxx", where "xxxxxx" is the offset. Calculate the
55 * start offset by subtracting the size of the u-boot image from the
56 * top of the allowable 24-bit range.
58 static void init_next_pbl_cmd(FILE *fp_uboot
)
61 int fd
= fileno(fp_uboot
);
63 if (fstat(fd
, &st
) == -1) {
64 printf("Error: Could not determine u-boot image size. %s\n",
69 next_pbl_cmd
= 0x82000000 - st
.st_size
;
72 static void generate_pbl_cmd(void)
74 uint32_t val
= next_pbl_cmd
;
78 for (i
= 3; i
>= 0; i
--) {
79 *pmem_buf
++ = (val
>> (i
* 8)) & 0xff;
84 static void pbl_fget(size_t size
, FILE *stream
)
89 while (size
&& (c_temp
= fgetc(stream
)) != EOF
) {
90 c
= (unsigned char)c_temp
;
97 /* load split u-boot with PBI command 81xxxxxx. */
98 static void load_uboot(FILE *fp_uboot
)
100 init_next_pbl_cmd(fp_uboot
);
101 while (next_pbl_cmd
< 0x82000000) {
103 pbl_fget(64, fp_uboot
);
107 static void check_get_hexval(char *token
)
112 if (!sscanf(token
, "%x", &hexval
)) {
113 printf("Error:%s[%d] - Invalid hex data(%s)\n", fname
,
117 for (i
= 3; i
>= 0; i
--) {
118 *pmem_buf
++ = (hexval
>> (i
* 8)) & 0xff;
123 static void pbl_parser(char *name
)
127 char *token
, *saveptr1
, *saveptr2
;
131 fd
= fopen(name
, "r");
133 printf("Error:%s - Can't open\n", fname
);
137 while ((getline(&line
, &len
, fd
)) > 0) {
139 token
= strtok_r(line
, "\r\n", &saveptr1
);
140 /* drop all lines with zero tokens (= empty lines) */
143 for (line
= token
;; line
= NULL
) {
144 token
= strtok_r(line
, " \t", &saveptr2
);
147 /* Drop all text starting with '#' as comments */
150 check_get_hexval(token
);
158 static uint32_t crc_table
[256];
160 static void make_crc_table(void)
164 uint32_t poly
; /* polynomial exclusive-or pattern */
167 * the polynomial used by PBL is 1 + x1 + x2 + x4 + x5 + x7 + x8 + x10
168 * + x11 + x12 + x16 + x22 + x23 + x26 + x32.
172 for (i
= 0; i
< 256; i
++) {
174 for (j
= 0; j
< 8; j
++) {
175 if (mask
& 0x80000000)
176 mask
= (mask
<< 1) ^ poly
;
184 unsigned long pbl_crc32(unsigned long crc
, const char *buf
, uint32_t len
)
186 uint32_t crc32_val
= 0xffffffff;
192 for (i
= 0; i
< len
; i
++)
193 crc32_val
= (crc32_val
<< 8) ^
194 crc_table
[(crc32_val
>> 24) ^ (*buf
++ & 0xff)];
196 crc32_val
= crc32_val
^ xor;
198 crc32_val
+= 0xffffffff;
204 static uint32_t reverse_byte(uint32_t val
)
211 p1
= (unsigned char *)&temp
;
212 for (j
= 3; j
>= 0; j
--)
213 *p1
++ = (val
>> (j
* 8)) & 0xff;
217 /* write end command and crc command to memory. */
218 static void add_end_cmd(void)
220 uint32_t pbl_end_cmd
[4] = {0x09138000, 0x00000000,
221 0x091380c0, 0x00000000};
224 unsigned char *p
= (unsigned char *)&pbl_end_cmd
;
226 if (ENDIANNESS
== 'l') {
227 for (i
= 0; i
< 4; i
++)
228 pbl_end_cmd
[i
] = reverse_byte(pbl_end_cmd
[i
]);
231 for (i
= 0; i
< 16; i
++) {
236 /* Add PBI CRC command. */
243 /* calculated CRC32 and write it to memory. */
244 crc32_pbl
= pbl_crc32(0, (const char *)mem_buf
, pbl_size
);
245 *pmem_buf
++ = (crc32_pbl
>> 24) & 0xff;
246 *pmem_buf
++ = (crc32_pbl
>> 16) & 0xff;
247 *pmem_buf
++ = (crc32_pbl
>> 8) & 0xff;
248 *pmem_buf
++ = (crc32_pbl
) & 0xff;
251 if ((pbl_size
% 16) != 0) {
252 for (i
= 0; i
< 8; i
++) {
257 if ((pbl_size
% 16 != 0)) {
258 printf("Error: Bad size of image file\n");
263 void pbl_load_uboot(int ifd
, struct mkimage_params
*params
)
268 /* parse the rcw.cfg file. */
269 pbl_parser(params
->imagename
);
271 /* parse the pbi.cfg file. */
272 pbl_parser(params
->imagename2
);
274 fp_uboot
= fopen(params
->datafile
, "r");
275 if (fp_uboot
== NULL
) {
276 printf("Error: %s open failed\n", params
->datafile
);
280 load_uboot(fp_uboot
);
283 lseek(ifd
, 0, SEEK_SET
);
286 if (write(ifd
, (const void *)&mem_buf
, size
) != size
) {
287 fprintf(stderr
, "Write error on %s: %s\n",
288 params
->imagefile
, strerror(errno
));
293 static int pblimage_check_image_types(uint8_t type
)
295 if (type
== IH_TYPE_PBLIMAGE
)
301 static int pblimage_verify_header(unsigned char *ptr
, int image_size
,
302 struct mkimage_params
*params
)
304 struct pbl_header
*pbl_hdr
= (struct pbl_header
*) ptr
;
306 /* Only a few checks can be done: search for magic numbers */
307 if (ENDIANNESS
== 'l') {
308 if (pbl_hdr
->preamble
!= reverse_byte(RCW_PREAMBLE
))
309 return -FDT_ERR_BADSTRUCTURE
;
311 if (pbl_hdr
->rcwheader
!= reverse_byte(RCW_HEADER
))
312 return -FDT_ERR_BADSTRUCTURE
;
314 if (pbl_hdr
->preamble
!= RCW_PREAMBLE
)
315 return -FDT_ERR_BADSTRUCTURE
;
317 if (pbl_hdr
->rcwheader
!= RCW_HEADER
)
318 return -FDT_ERR_BADSTRUCTURE
;
323 static void pblimage_print_header(const void *ptr
)
325 printf("Image Type: Freescale PBL Boot Image\n");
328 static void pblimage_set_header(void *ptr
, struct stat
*sbuf
, int ifd
,
329 struct mkimage_params
*params
)
331 /*nothing need to do, pbl_load_uboot takes care of whole file. */
334 /* pblimage parameters */
335 static struct image_type_params pblimage_params
= {
336 .name
= "Freescale PBL Boot Image support",
337 .header_size
= sizeof(struct pbl_header
),
338 .hdr
= (void *)&pblimage_header
,
339 .check_image_type
= pblimage_check_image_types
,
340 .verify_header
= pblimage_verify_header
,
341 .print_header
= pblimage_print_header
,
342 .set_header
= pblimage_set_header
,
345 void init_pbl_image_type(void)
348 mkimage_register(&pblimage_params
);