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tools/pblimage.c
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// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright 2012-2014 Freescale Semiconductor, Inc. |
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*/ |
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#include "imagetool.h" |
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#include <image.h> #include "pblimage.h" |
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#include "pbl_crc32.h" |
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#include <u-boot/crc.h> |
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#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) #define PBL_ACS_CONT_CMD 0x81000000 #define PBL_ADDR_24BIT_MASK 0x00ffffff |
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/* |
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* Initialize to an invalid value. |
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*/ |
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static uint32_t next_pbl_cmd = 0x82000000; |
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/* * need to store all bytes in memory for calculating crc32, then write the * bytes to image file for PBL boot. */ |
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static unsigned char mem_buf[1000000]; |
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static unsigned char *pmem_buf = mem_buf; static int pbl_size; static char *fname = "Unknown"; static int lineno = -1; static struct pbl_header pblimage_header; |
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static int uboot_size; static int arch_flag; static uint32_t pbl_cmd_initaddr; static uint32_t pbi_crc_cmd1; static uint32_t pbi_crc_cmd2; static uint32_t pbl_end_cmd[4]; |
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static union { char c[4]; unsigned char l; } endian_test = { {'l', '?', '?', 'b'} }; #define ENDIANNESS ((char)endian_test.l) |
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/* * The PBL can load up to 64 bytes at a time, so we split the U-Boot * image into 64 byte chunks. PBL needs a command for each piece, of * the form "81xxxxxx", where "xxxxxx" is the offset. Calculate the * start offset by subtracting the size of the u-boot image from the * top of the allowable 24-bit range. */ |
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static void generate_pbl_cmd(void) { uint32_t val = next_pbl_cmd; next_pbl_cmd += 0x40; int i; for (i = 3; i >= 0; i--) { *pmem_buf++ = (val >> (i * 8)) & 0xff; pbl_size++; } } static void pbl_fget(size_t size, FILE *stream) { |
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unsigned char c = 0xff; |
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int c_temp; |
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while (size) { c_temp = fgetc(stream); if (c_temp != EOF) c = (unsigned char)c_temp; else if ((c_temp == EOF) && (arch_flag == IH_ARCH_ARM)) c = 0xff; |
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*pmem_buf++ = c; pbl_size++; size--; } } /* load split u-boot with PBI command 81xxxxxx. */ static void load_uboot(FILE *fp_uboot) { |
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next_pbl_cmd = pbl_cmd_initaddr - uboot_size; while (next_pbl_cmd < pbl_cmd_initaddr) { |
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generate_pbl_cmd(); pbl_fget(64, fp_uboot); } } static void check_get_hexval(char *token) { uint32_t hexval; int i; if (!sscanf(token, "%x", &hexval)) { printf("Error:%s[%d] - Invalid hex data(%s) ", fname, lineno, token); exit(EXIT_FAILURE); } for (i = 3; i >= 0; i--) { *pmem_buf++ = (hexval >> (i * 8)) & 0xff; pbl_size++; } } static void pbl_parser(char *name) { FILE *fd = NULL; char *line = NULL; char *token, *saveptr1, *saveptr2; size_t len = 0; fname = name; fd = fopen(name, "r"); if (fd == NULL) { printf("Error:%s - Can't open ", fname); exit(EXIT_FAILURE); } while ((getline(&line, &len, fd)) > 0) { lineno++; token = strtok_r(line, "\r ", &saveptr1); /* drop all lines with zero tokens (= empty lines) */ if (token == NULL) continue; for (line = token;; line = NULL) { token = strtok_r(line, " \t", &saveptr2); if (token == NULL) break; /* Drop all text starting with '#' as comments */ if (token[0] == '#') break; check_get_hexval(token); } } if (line) free(line); fclose(fd); } |
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static uint32_t reverse_byte(uint32_t val) { uint32_t temp; unsigned char *p1; int j; temp = val; p1 = (unsigned char *)&temp; for (j = 3; j >= 0; j--) *p1++ = (val >> (j * 8)) & 0xff; return temp; } /* write end command and crc command to memory. */ static void add_end_cmd(void) { |
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uint32_t crc32_pbl; int i; unsigned char *p = (unsigned char *)&pbl_end_cmd; if (ENDIANNESS == 'l') { for (i = 0; i < 4; i++) pbl_end_cmd[i] = reverse_byte(pbl_end_cmd[i]); } for (i = 0; i < 16; i++) { *pmem_buf++ = *p++; pbl_size++; } /* Add PBI CRC command. */ *pmem_buf++ = 0x08; |
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*pmem_buf++ = pbi_crc_cmd1; *pmem_buf++ = pbi_crc_cmd2; |
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*pmem_buf++ = 0x40; pbl_size += 4; /* calculated CRC32 and write it to memory. */ crc32_pbl = pbl_crc32(0, (const char *)mem_buf, pbl_size); *pmem_buf++ = (crc32_pbl >> 24) & 0xff; *pmem_buf++ = (crc32_pbl >> 16) & 0xff; *pmem_buf++ = (crc32_pbl >> 8) & 0xff; *pmem_buf++ = (crc32_pbl) & 0xff; pbl_size += 4; |
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} |
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void pbl_load_uboot(int ifd, struct image_tool_params *params) |
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{ FILE *fp_uboot; int size; /* parse the rcw.cfg file. */ pbl_parser(params->imagename); /* parse the pbi.cfg file. */ |
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if (params->imagename2[0] != '\0') pbl_parser(params->imagename2); if (params->datafile) { fp_uboot = fopen(params->datafile, "r"); if (fp_uboot == NULL) { printf("Error: %s open failed ", params->datafile); exit(EXIT_FAILURE); } |
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load_uboot(fp_uboot); fclose(fp_uboot); |
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} |
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add_end_cmd(); |
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lseek(ifd, 0, SEEK_SET); size = pbl_size; if (write(ifd, (const void *)&mem_buf, size) != size) { fprintf(stderr, "Write error on %s: %s ", params->imagefile, strerror(errno)); exit(EXIT_FAILURE); } } static int pblimage_check_image_types(uint8_t type) { if (type == IH_TYPE_PBLIMAGE) return EXIT_SUCCESS; else return EXIT_FAILURE; } static int pblimage_verify_header(unsigned char *ptr, int image_size, |
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struct image_tool_params *params) |
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{ struct pbl_header *pbl_hdr = (struct pbl_header *) ptr; /* Only a few checks can be done: search for magic numbers */ if (ENDIANNESS == 'l') { if (pbl_hdr->preamble != reverse_byte(RCW_PREAMBLE)) return -FDT_ERR_BADSTRUCTURE; if (pbl_hdr->rcwheader != reverse_byte(RCW_HEADER)) return -FDT_ERR_BADSTRUCTURE; } else { if (pbl_hdr->preamble != RCW_PREAMBLE) return -FDT_ERR_BADSTRUCTURE; if (pbl_hdr->rcwheader != RCW_HEADER) return -FDT_ERR_BADSTRUCTURE; } return 0; } static void pblimage_print_header(const void *ptr) { printf("Image Type: Freescale PBL Boot Image "); } static void pblimage_set_header(void *ptr, struct stat *sbuf, int ifd, |
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struct image_tool_params *params) |
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{ /*nothing need to do, pbl_load_uboot takes care of whole file. */ } |
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int pblimage_check_params(struct image_tool_params *params) { FILE *fp_uboot; int fd; struct stat st; if (!params) return EXIT_FAILURE; |
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if (params->datafile) { fp_uboot = fopen(params->datafile, "r"); if (fp_uboot == NULL) { printf("Error: %s open failed ", params->datafile); exit(EXIT_FAILURE); } fd = fileno(fp_uboot); |
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if (fstat(fd, &st) == -1) { printf("Error: Could not determine u-boot image size. %s ", strerror(errno)); exit(EXIT_FAILURE); } |
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/* For the variable size, pad it to 64 byte boundary */ uboot_size = roundup(st.st_size, 64); fclose(fp_uboot); } |
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if (params->arch == IH_ARCH_ARM) { arch_flag = IH_ARCH_ARM; pbi_crc_cmd1 = 0x61; pbi_crc_cmd2 = 0; pbl_cmd_initaddr = params->addr & PBL_ADDR_24BIT_MASK; pbl_cmd_initaddr |= PBL_ACS_CONT_CMD; |
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pbl_cmd_initaddr += uboot_size; |
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pbl_end_cmd[0] = 0x09610000; pbl_end_cmd[1] = 0x00000000; pbl_end_cmd[2] = 0x096100c0; pbl_end_cmd[3] = 0x00000000; } else if (params->arch == IH_ARCH_PPC) { arch_flag = IH_ARCH_PPC; pbi_crc_cmd1 = 0x13; pbi_crc_cmd2 = 0x80; pbl_cmd_initaddr = 0x82000000; |
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pbl_end_cmd[0] = 0x091380c0; |
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pbl_end_cmd[1] = 0x00000000; pbl_end_cmd[2] = 0x091380c0; pbl_end_cmd[3] = 0x00000000; } next_pbl_cmd = pbl_cmd_initaddr; return 0; }; |
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/* pblimage parameters */ |
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U_BOOT_IMAGE_TYPE( pblimage, "Freescale PBL Boot Image support", sizeof(struct pbl_header), (void *)&pblimage_header, pblimage_check_params, pblimage_verify_header, pblimage_print_header, pblimage_set_header, NULL, pblimage_check_image_types, NULL, NULL ); |