2 * Copyright 2012-2014 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
11 #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
12 #define PBL_ACS_CONT_CMD 0x81000000
13 #define PBL_ADDR_24BIT_MASK 0x00ffffff
16 * Initialize to an invalid value.
18 static uint32_t next_pbl_cmd = 0x82000000;
20 * need to store all bytes in memory for calculating crc32, then write the
21 * bytes to image file for PBL boot.
23 static unsigned char mem_buf[1000000];
24 static unsigned char *pmem_buf = mem_buf;
26 static char *fname = "Unknown";
27 static int lineno = -1;
28 static struct pbl_header pblimage_header;
29 static int uboot_size;
32 static uint32_t pbl_cmd_initaddr;
33 static uint32_t pbi_crc_cmd1;
34 static uint32_t pbi_crc_cmd2;
35 static uint32_t pbl_end_cmd[4];
41 } endian_test = { {'l', '?', '?', 'b'} };
43 #define ENDIANNESS ((char)endian_test.l)
46 * The PBL can load up to 64 bytes at a time, so we split the U-Boot
47 * image into 64 byte chunks. PBL needs a command for each piece, of
48 * the form "81xxxxxx", where "xxxxxx" is the offset. Calculate the
49 * start offset by subtracting the size of the u-boot image from the
50 * top of the allowable 24-bit range.
52 static void generate_pbl_cmd(void)
54 uint32_t val = next_pbl_cmd;
58 for (i = 3; i >= 0; i--) {
59 *pmem_buf++ = (val >> (i * 8)) & 0xff;
64 static void pbl_fget(size_t size, FILE *stream)
66 unsigned char c = 0xff;
70 c_temp = fgetc(stream);
72 c = (unsigned char)c_temp;
73 else if ((c_temp == EOF) && (arch_flag == IH_ARCH_ARM))
81 /* load split u-boot with PBI command 81xxxxxx. */
82 static void load_uboot(FILE *fp_uboot)
84 next_pbl_cmd = pbl_cmd_initaddr - uboot_size;
85 while (next_pbl_cmd < pbl_cmd_initaddr) {
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 reverse_byte(uint32_t val)
149 p1 = (unsigned char *)&temp;
150 for (j = 3; j >= 0; j--)
151 *p1++ = (val >> (j * 8)) & 0xff;
155 /* write end command and crc command to memory. */
156 static void add_end_cmd(void)
160 unsigned char *p = (unsigned char *)&pbl_end_cmd;
162 if (ENDIANNESS == 'l') {
163 for (i = 0; i < 4; i++)
164 pbl_end_cmd[i] = reverse_byte(pbl_end_cmd[i]);
167 for (i = 0; i < 16; i++) {
172 /* Add PBI CRC command. */
174 *pmem_buf++ = pbi_crc_cmd1;
175 *pmem_buf++ = pbi_crc_cmd2;
179 /* calculated CRC32 and write it to memory. */
180 crc32_pbl = pbl_crc32(0, (const char *)mem_buf, pbl_size);
181 *pmem_buf++ = (crc32_pbl >> 24) & 0xff;
182 *pmem_buf++ = (crc32_pbl >> 16) & 0xff;
183 *pmem_buf++ = (crc32_pbl >> 8) & 0xff;
184 *pmem_buf++ = (crc32_pbl) & 0xff;
188 void pbl_load_uboot(int ifd, struct image_tool_params *params)
193 /* parse the rcw.cfg file. */
194 pbl_parser(params->imagename);
196 /* parse the pbi.cfg file. */
197 if (params->imagename2[0] != '\0')
198 pbl_parser(params->imagename2);
200 if (params->datafile) {
201 fp_uboot = fopen(params->datafile, "r");
202 if (fp_uboot == NULL) {
203 printf("Error: %s open failed\n", params->datafile);
207 load_uboot(fp_uboot);
211 lseek(ifd, 0, SEEK_SET);
214 if (write(ifd, (const void *)&mem_buf, size) != size) {
215 fprintf(stderr, "Write error on %s: %s\n",
216 params->imagefile, strerror(errno));
221 static int pblimage_check_image_types(uint8_t type)
223 if (type == IH_TYPE_PBLIMAGE)
229 static int pblimage_verify_header(unsigned char *ptr, int image_size,
230 struct image_tool_params *params)
232 struct pbl_header *pbl_hdr = (struct pbl_header *) ptr;
234 /* Only a few checks can be done: search for magic numbers */
235 if (ENDIANNESS == 'l') {
236 if (pbl_hdr->preamble != reverse_byte(RCW_PREAMBLE))
237 return -FDT_ERR_BADSTRUCTURE;
239 if (pbl_hdr->rcwheader != reverse_byte(RCW_HEADER))
240 return -FDT_ERR_BADSTRUCTURE;
242 if (pbl_hdr->preamble != RCW_PREAMBLE)
243 return -FDT_ERR_BADSTRUCTURE;
245 if (pbl_hdr->rcwheader != RCW_HEADER)
246 return -FDT_ERR_BADSTRUCTURE;
251 static void pblimage_print_header(const void *ptr)
253 printf("Image Type: Freescale PBL Boot Image\n");
256 static void pblimage_set_header(void *ptr, struct stat *sbuf, int ifd,
257 struct image_tool_params *params)
259 /*nothing need to do, pbl_load_uboot takes care of whole file. */
262 int pblimage_check_params(struct image_tool_params *params)
271 if (params->datafile) {
272 fp_uboot = fopen(params->datafile, "r");
273 if (fp_uboot == NULL) {
274 printf("Error: %s open failed\n", params->datafile);
277 fd = fileno(fp_uboot);
279 if (fstat(fd, &st) == -1) {
280 printf("Error: Could not determine u-boot image size. %s\n",
285 /* For the variable size, pad it to 64 byte boundary */
286 uboot_size = roundup(st.st_size, 64);
290 if (params->arch == IH_ARCH_ARM) {
291 arch_flag = IH_ARCH_ARM;
294 pbl_cmd_initaddr = params->addr & PBL_ADDR_24BIT_MASK;
295 pbl_cmd_initaddr |= PBL_ACS_CONT_CMD;
296 pbl_cmd_initaddr |= uboot_size;
297 pbl_end_cmd[0] = 0x09610000;
298 pbl_end_cmd[1] = 0x00000000;
299 pbl_end_cmd[2] = 0x096100c0;
300 pbl_end_cmd[3] = 0x00000000;
301 } else if (params->arch == IH_ARCH_PPC) {
302 arch_flag = IH_ARCH_PPC;
305 pbl_cmd_initaddr = 0x82000000;
306 pbl_end_cmd[0] = 0x091380c0;
307 pbl_end_cmd[1] = 0x00000000;
308 pbl_end_cmd[2] = 0x091380c0;
309 pbl_end_cmd[3] = 0x00000000;
312 next_pbl_cmd = pbl_cmd_initaddr;
316 /* pblimage parameters */
319 "Freescale PBL Boot Image support",
320 sizeof(struct pbl_header),
321 (void *)&pblimage_header,
322 pblimage_check_params,
323 pblimage_verify_header,
324 pblimage_print_header,
327 pblimage_check_image_types,