1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2012-2014 Freescale Semiconductor, Inc.
10 #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
11 #define PBL_ACS_CONT_CMD 0x81000000
12 #define PBL_ADDR_24BIT_MASK 0x00ffffff
15 * Initialize to an invalid value.
17 static uint32_t next_pbl_cmd
= 0x82000000;
19 * need to store all bytes in memory for calculating crc32, then write the
20 * bytes to image file for PBL boot.
22 static unsigned char mem_buf
[1000000];
23 static unsigned char *pmem_buf
= mem_buf
;
25 static char *fname
= "Unknown";
26 static int lineno
= -1;
27 static struct pbl_header pblimage_header
;
28 static int uboot_size
;
31 static uint32_t pbl_cmd_initaddr
;
32 static uint32_t pbi_crc_cmd1
;
33 static uint32_t pbi_crc_cmd2
;
34 static uint32_t pbl_end_cmd
[4];
40 } endian_test
= { {'l', '?', '?', 'b'} };
42 #define ENDIANNESS ((char)endian_test.l)
45 * The PBL can load up to 64 bytes at a time, so we split the U-Boot
46 * image into 64 byte chunks. PBL needs a command for each piece, of
47 * the form "81xxxxxx", where "xxxxxx" is the offset. Calculate the
48 * start offset by subtracting the size of the u-boot image from the
49 * top of the allowable 24-bit range.
51 static void generate_pbl_cmd(void)
53 uint32_t val
= next_pbl_cmd
;
57 for (i
= 3; i
>= 0; i
--) {
58 *pmem_buf
++ = (val
>> (i
* 8)) & 0xff;
63 static void pbl_fget(size_t size
, FILE *stream
)
65 unsigned char c
= 0xff;
69 c_temp
= fgetc(stream
);
71 c
= (unsigned char)c_temp
;
72 else if ((c_temp
== EOF
) && (arch_flag
== IH_ARCH_ARM
))
80 /* load split u-boot with PBI command 81xxxxxx. */
81 static void load_uboot(FILE *fp_uboot
)
83 next_pbl_cmd
= pbl_cmd_initaddr
- uboot_size
;
84 while (next_pbl_cmd
< pbl_cmd_initaddr
) {
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)
159 unsigned char *p
= (unsigned char *)&pbl_end_cmd
;
161 if (ENDIANNESS
== 'l') {
162 for (i
= 0; i
< 4; i
++)
163 pbl_end_cmd
[i
] = reverse_byte(pbl_end_cmd
[i
]);
166 for (i
= 0; i
< 16; i
++) {
171 /* Add PBI CRC command. */
173 *pmem_buf
++ = pbi_crc_cmd1
;
174 *pmem_buf
++ = pbi_crc_cmd2
;
178 /* calculated CRC32 and write it to memory. */
179 crc32_pbl
= pbl_crc32(0, (const char *)mem_buf
, pbl_size
);
180 *pmem_buf
++ = (crc32_pbl
>> 24) & 0xff;
181 *pmem_buf
++ = (crc32_pbl
>> 16) & 0xff;
182 *pmem_buf
++ = (crc32_pbl
>> 8) & 0xff;
183 *pmem_buf
++ = (crc32_pbl
) & 0xff;
187 void pbl_load_uboot(int ifd
, struct image_tool_params
*params
)
192 /* parse the rcw.cfg file. */
193 pbl_parser(params
->imagename
);
195 /* parse the pbi.cfg file. */
196 if (params
->imagename2
[0] != '\0')
197 pbl_parser(params
->imagename2
);
199 if (params
->datafile
) {
200 fp_uboot
= fopen(params
->datafile
, "r");
201 if (fp_uboot
== NULL
) {
202 printf("Error: %s open failed\n", params
->datafile
);
206 load_uboot(fp_uboot
);
210 lseek(ifd
, 0, SEEK_SET
);
213 if (write(ifd
, (const void *)&mem_buf
, size
) != size
) {
214 fprintf(stderr
, "Write error on %s: %s\n",
215 params
->imagefile
, strerror(errno
));
220 static int pblimage_check_image_types(uint8_t type
)
222 if (type
== IH_TYPE_PBLIMAGE
)
228 static int pblimage_verify_header(unsigned char *ptr
, int image_size
,
229 struct image_tool_params
*params
)
231 struct pbl_header
*pbl_hdr
= (struct pbl_header
*) ptr
;
233 /* Only a few checks can be done: search for magic numbers */
234 if (ENDIANNESS
== 'l') {
235 if (pbl_hdr
->preamble
!= reverse_byte(RCW_PREAMBLE
))
236 return -FDT_ERR_BADSTRUCTURE
;
238 if (pbl_hdr
->rcwheader
!= reverse_byte(RCW_HEADER
))
239 return -FDT_ERR_BADSTRUCTURE
;
241 if (pbl_hdr
->preamble
!= RCW_PREAMBLE
)
242 return -FDT_ERR_BADSTRUCTURE
;
244 if (pbl_hdr
->rcwheader
!= RCW_HEADER
)
245 return -FDT_ERR_BADSTRUCTURE
;
250 static void pblimage_print_header(const void *ptr
)
252 printf("Image Type: Freescale PBL Boot Image\n");
255 static void pblimage_set_header(void *ptr
, struct stat
*sbuf
, int ifd
,
256 struct image_tool_params
*params
)
258 /*nothing need to do, pbl_load_uboot takes care of whole file. */
261 int pblimage_check_params(struct image_tool_params
*params
)
270 if (params
->datafile
) {
271 fp_uboot
= fopen(params
->datafile
, "r");
272 if (fp_uboot
== NULL
) {
273 printf("Error: %s open failed\n", params
->datafile
);
276 fd
= fileno(fp_uboot
);
278 if (fstat(fd
, &st
) == -1) {
279 printf("Error: Could not determine u-boot image size. %s\n",
284 /* For the variable size, pad it to 64 byte boundary */
285 uboot_size
= roundup(st
.st_size
, 64);
289 if (params
->arch
== IH_ARCH_ARM
) {
290 arch_flag
= IH_ARCH_ARM
;
293 pbl_cmd_initaddr
= params
->addr
& PBL_ADDR_24BIT_MASK
;
294 pbl_cmd_initaddr
|= PBL_ACS_CONT_CMD
;
295 pbl_cmd_initaddr
+= uboot_size
;
296 pbl_end_cmd
[0] = 0x09610000;
297 pbl_end_cmd
[1] = 0x00000000;
298 pbl_end_cmd
[2] = 0x096100c0;
299 pbl_end_cmd
[3] = 0x00000000;
300 } else if (params
->arch
== IH_ARCH_PPC
) {
301 arch_flag
= IH_ARCH_PPC
;
304 pbl_cmd_initaddr
= 0x82000000;
305 pbl_end_cmd
[0] = 0x091380c0;
306 pbl_end_cmd
[1] = 0x00000000;
307 pbl_end_cmd
[2] = 0x091380c0;
308 pbl_end_cmd
[3] = 0x00000000;
311 next_pbl_cmd
= pbl_cmd_initaddr
;
315 /* pblimage parameters */
318 "Freescale PBL Boot Image support",
319 sizeof(struct pbl_header
),
320 (void *)&pblimage_header
,
321 pblimage_check_params
,
322 pblimage_verify_header
,
323 pblimage_print_header
,
326 pblimage_check_image_types
,