2 * Copyright 2012 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
13 * Initialize to an invalid value.
15 static uint32_t next_pbl_cmd
= 0x82000000;
17 * need to store all bytes in memory for calculating crc32, then write the
18 * bytes to image file for PBL boot.
20 static unsigned char mem_buf
[1000000];
21 static unsigned char *pmem_buf
= mem_buf
;
23 static char *fname
= "Unknown";
24 static int lineno
= -1;
25 static struct pbl_header pblimage_header
;
31 } endian_test
= { {'l', '?', '?', 'b'} };
33 #define ENDIANNESS ((char)endian_test.l)
36 * The PBL can load up to 64 bytes at a time, so we split the U-Boot
37 * image into 64 byte chunks. PBL needs a command for each piece, of
38 * the form "81xxxxxx", where "xxxxxx" is the offset. Calculate the
39 * start offset by subtracting the size of the u-boot image from the
40 * top of the allowable 24-bit range.
42 static void init_next_pbl_cmd(FILE *fp_uboot
)
45 int fd
= fileno(fp_uboot
);
47 if (fstat(fd
, &st
) == -1) {
48 printf("Error: Could not determine u-boot image size. %s\n",
53 next_pbl_cmd
= 0x82000000 - st
.st_size
;
56 static void generate_pbl_cmd(void)
58 uint32_t val
= next_pbl_cmd
;
62 for (i
= 3; i
>= 0; i
--) {
63 *pmem_buf
++ = (val
>> (i
* 8)) & 0xff;
68 static void pbl_fget(size_t size
, FILE *stream
)
73 while (size
&& (c_temp
= fgetc(stream
)) != EOF
) {
74 c
= (unsigned char)c_temp
;
81 /* load split u-boot with PBI command 81xxxxxx. */
82 static void load_uboot(FILE *fp_uboot
)
84 init_next_pbl_cmd(fp_uboot
);
85 while (next_pbl_cmd
< 0x82000000) {
87 pbl_fget(64, fp_uboot
);
91 static void check_get_hexval(char *token
)
96 if (!sscanf(token
, "%x", &hexval
)) {
97 printf("Error:%s[%d] - Invalid hex data(%s)\n", fname
,
101 for (i
= 3; i
>= 0; i
--) {
102 *pmem_buf
++ = (hexval
>> (i
* 8)) & 0xff;
107 static void pbl_parser(char *name
)
111 char *token
, *saveptr1
, *saveptr2
;
115 fd
= fopen(name
, "r");
117 printf("Error:%s - Can't open\n", fname
);
121 while ((getline(&line
, &len
, fd
)) > 0) {
123 token
= strtok_r(line
, "\r\n", &saveptr1
);
124 /* drop all lines with zero tokens (= empty lines) */
127 for (line
= token
;; line
= NULL
) {
128 token
= strtok_r(line
, " \t", &saveptr2
);
131 /* Drop all text starting with '#' as comments */
134 check_get_hexval(token
);
142 static uint32_t crc_table
[256];
144 static void make_crc_table(void)
148 uint32_t poly
; /* polynomial exclusive-or pattern */
151 * the polynomial used by PBL is 1 + x1 + x2 + x4 + x5 + x7 + x8 + x10
152 * + x11 + x12 + x16 + x22 + x23 + x26 + x32.
156 for (i
= 0; i
< 256; i
++) {
158 for (j
= 0; j
< 8; j
++) {
159 if (mask
& 0x80000000)
160 mask
= (mask
<< 1) ^ poly
;
168 unsigned long pbl_crc32(unsigned long crc
, const char *buf
, uint32_t len
)
170 uint32_t crc32_val
= 0xffffffff;
176 for (i
= 0; i
< len
; i
++)
177 crc32_val
= (crc32_val
<< 8) ^
178 crc_table
[(crc32_val
>> 24) ^ (*buf
++ & 0xff)];
180 crc32_val
= crc32_val
^ xor;
182 crc32_val
+= 0xffffffff;
188 static uint32_t reverse_byte(uint32_t val
)
195 p1
= (unsigned char *)&temp
;
196 for (j
= 3; j
>= 0; j
--)
197 *p1
++ = (val
>> (j
* 8)) & 0xff;
201 /* write end command and crc command to memory. */
202 static void add_end_cmd(void)
204 uint32_t pbl_end_cmd
[4] = {0x09138000, 0x00000000,
205 0x091380c0, 0x00000000};
208 unsigned char *p
= (unsigned char *)&pbl_end_cmd
;
210 if (ENDIANNESS
== 'l') {
211 for (i
= 0; i
< 4; i
++)
212 pbl_end_cmd
[i
] = reverse_byte(pbl_end_cmd
[i
]);
215 for (i
= 0; i
< 16; i
++) {
220 /* Add PBI CRC command. */
227 /* calculated CRC32 and write it to memory. */
228 crc32_pbl
= pbl_crc32(0, (const char *)mem_buf
, pbl_size
);
229 *pmem_buf
++ = (crc32_pbl
>> 24) & 0xff;
230 *pmem_buf
++ = (crc32_pbl
>> 16) & 0xff;
231 *pmem_buf
++ = (crc32_pbl
>> 8) & 0xff;
232 *pmem_buf
++ = (crc32_pbl
) & 0xff;
235 if ((pbl_size
% 16) != 0) {
236 for (i
= 0; i
< 8; i
++) {
241 if ((pbl_size
% 16 != 0)) {
242 printf("Error: Bad size of image file\n");
247 void pbl_load_uboot(int ifd
, struct mkimage_params
*params
)
252 /* parse the rcw.cfg file. */
253 pbl_parser(params
->imagename
);
255 /* parse the pbi.cfg file. */
256 pbl_parser(params
->imagename2
);
258 fp_uboot
= fopen(params
->datafile
, "r");
259 if (fp_uboot
== NULL
) {
260 printf("Error: %s open failed\n", params
->datafile
);
264 load_uboot(fp_uboot
);
267 lseek(ifd
, 0, SEEK_SET
);
270 if (write(ifd
, (const void *)&mem_buf
, size
) != size
) {
271 fprintf(stderr
, "Write error on %s: %s\n",
272 params
->imagefile
, strerror(errno
));
277 static int pblimage_check_image_types(uint8_t type
)
279 if (type
== IH_TYPE_PBLIMAGE
)
285 static int pblimage_verify_header(unsigned char *ptr
, int image_size
,
286 struct mkimage_params
*params
)
288 struct pbl_header
*pbl_hdr
= (struct pbl_header
*) ptr
;
290 /* Only a few checks can be done: search for magic numbers */
291 if (ENDIANNESS
== 'l') {
292 if (pbl_hdr
->preamble
!= reverse_byte(RCW_PREAMBLE
))
293 return -FDT_ERR_BADSTRUCTURE
;
295 if (pbl_hdr
->rcwheader
!= reverse_byte(RCW_HEADER
))
296 return -FDT_ERR_BADSTRUCTURE
;
298 if (pbl_hdr
->preamble
!= RCW_PREAMBLE
)
299 return -FDT_ERR_BADSTRUCTURE
;
301 if (pbl_hdr
->rcwheader
!= RCW_HEADER
)
302 return -FDT_ERR_BADSTRUCTURE
;
307 static void pblimage_print_header(const void *ptr
)
309 printf("Image Type: Freescale PBL Boot Image\n");
312 static void pblimage_set_header(void *ptr
, struct stat
*sbuf
, int ifd
,
313 struct mkimage_params
*params
)
315 /*nothing need to do, pbl_load_uboot takes care of whole file. */
318 /* pblimage parameters */
319 static struct image_type_params pblimage_params
= {
320 .name
= "Freescale PBL Boot Image support",
321 .header_size
= sizeof(struct pbl_header
),
322 .hdr
= (void *)&pblimage_header
,
323 .check_image_type
= pblimage_check_image_types
,
324 .verify_header
= pblimage_verify_header
,
325 .print_header
= pblimage_print_header
,
326 .set_header
= pblimage_set_header
,
329 void init_pbl_image_type(void)
332 mkimage_register(&pblimage_params
);