diff options
Diffstat (limited to 'package/mtd/src/fis.c')
| -rw-r--r-- | package/mtd/src/fis.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/package/mtd/src/fis.c b/package/mtd/src/fis.c deleted file mode 100644 index f825f590c9..0000000000 --- a/package/mtd/src/fis.c +++ /dev/null @@ -1,262 +0,0 @@ -/* - * FIS table updating code for mtd - * - * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License v2 - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ -#include <sys/mman.h> -#include <stdint.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <stdio.h> -#include "crc32.h" -#include "mtd.h" -#include "fis.h" - -struct fis_image_hdr { - unsigned char name[16]; - uint32_t flash_base; - uint32_t mem_base; - uint32_t size; - uint32_t entry_point; - uint32_t data_length; -} __attribute__((packed)); - -struct fis_image_crc { - uint32_t desc; - uint32_t file; -} __attribute__((packed)); - -struct fis_image_desc { - struct fis_image_hdr hdr; - char _pad[256 - sizeof(struct fis_image_hdr) - sizeof(struct fis_image_crc)]; - struct fis_image_crc crc; -} __attribute__((packed)); - -static int fis_fd = -1; -static struct fis_image_desc *fis_desc; -static int fis_erasesize = 0; - -static void -fis_close(void) -{ - if (fis_desc) - munmap(fis_desc, fis_erasesize); - - if (fis_fd >= 0) - close(fis_fd); - - fis_fd = -1; - fis_desc = NULL; -} - -static struct fis_image_desc * -fis_open(void) -{ - struct fis_image_desc *desc; - - if (fis_fd >= 0) - fis_close(); - - fis_fd = mtd_check_open("FIS directory"); - if (fis_fd < 0) - goto error; - - close(fis_fd); - fis_fd = mtd_open("FIS directory", true); - if (fis_fd < 0) - goto error; - - fis_erasesize = erasesize; - desc = mmap(NULL, erasesize, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_LOCKED, fis_fd, 0); - if (desc == MAP_FAILED) - goto error; - - fis_desc = desc; - return desc; - -error: - fis_close(); - return NULL; -} - -int -fis_validate(struct fis_part *old, int n_old, struct fis_part *new, int n_new) -{ - struct fis_image_desc *desc; - void *end; - int found = 0; - int i; - - desc = fis_open(); - if (!desc) - return -1; - - for (i = 0; i < n_new - 1; i++) { - if (!new[i].size) { - fprintf(stderr, "FIS error: only the last partition can detect the size automatically\n"); - i = -1; - goto done; - } - } - - end = desc; - end = (char *) end + fis_erasesize; - while ((void *) desc < end) { - if (!desc->hdr.name[0] || (desc->hdr.name[0] == 0xff)) - break; - - for (i = 0; i < n_old; i++) { - if (!strncmp((char *) desc->hdr.name, (char *) old[i].name, sizeof(desc->hdr.name))) { - found++; - goto next; - } - } -next: - desc++; - continue; - } - - if (found == n_old) - i = 1; - else - i = -1; - -done: - fis_close(); - return i; -} - -int -fis_remap(struct fis_part *old, int n_old, struct fis_part *new, int n_new) -{ - struct fis_image_desc *fisdir = NULL; - struct fis_image_desc *redboot = NULL; - struct fis_image_desc *first = NULL; - struct fis_image_desc *last = NULL; - struct fis_image_desc *first_fb = NULL; - struct fis_image_desc *last_fb = NULL; - struct fis_image_desc *desc; - struct fis_part *part; - uint32_t offset = 0, size = 0; - char *start, *end, *tmp; - int i; - - desc = fis_open(); - if (!desc) - return -1; - - if (!quiet) - fprintf(stderr, "Updating FIS table... \n"); - - start = (char *) desc; - end = (char *) desc + fis_erasesize; - while ((char *) desc < end) { - if (!desc->hdr.name[0] || (desc->hdr.name[0] == 0xff)) - break; - - if (!strcmp((char *) desc->hdr.name, "FIS directory")) - fisdir = desc; - - if (!strcmp((char *) desc->hdr.name, "RedBoot")) - redboot = desc; - - /* update max offset */ - if (offset < desc->hdr.flash_base) - offset = desc->hdr.flash_base; - - for (i = 0; i < n_old; i++) { - if (!strncmp((char *) desc->hdr.name, (char *) old[i].name, sizeof(desc->hdr.name))) { - last = desc; - if (!first) - first = desc; - break; - } - } - desc++; - } - desc--; - - first_fb = first; - last_fb = last; - - if (first_fb->hdr.flash_base > last_fb->hdr.flash_base) { - first_fb = last; - last_fb = first; - } - - /* determine size of available space */ - desc = (struct fis_image_desc *) start; - while ((char *) desc < end) { - if (!desc->hdr.name[0] || (desc->hdr.name[0] == 0xff)) - break; - - if (desc->hdr.flash_base > last_fb->hdr.flash_base && - desc->hdr.flash_base < offset) - offset = desc->hdr.flash_base; - - desc++; - } - desc--; - - size = offset - first_fb->hdr.flash_base; - -#ifdef notyet - desc = first - 1; - if (redboot && (desc >= redboot)) { - if (first->hdr.flash_base - desc->hdr.size > desc->hdr.flash_base) { - int delta = first->hdr.flash_base - desc->hdr.size - desc->hdr.flash_base; - - offset -= delta; - size += delta; - } - } -#endif - - last++; - desc = first + n_new; - offset = first_fb->hdr.flash_base; - - if (desc != last) { - if (desc > last) - tmp = (char *) desc; - else - tmp = (char *) last; - - memmove(desc, last, end - tmp); - if (desc < last) { - tmp = end - (last - desc) * sizeof(struct fis_image_desc); - memset(tmp, 0xff, tmp - end); - } - } - - for (part = new, desc = first; desc < first + n_new; desc++, part++) { - memset(desc, 0, sizeof(struct fis_image_desc)); - memcpy(desc->hdr.name, part->name, sizeof(desc->hdr.name)); - desc->crc.desc = 0; - desc->crc.file = 0; - - desc->hdr.flash_base = offset; - desc->hdr.mem_base = part->loadaddr; - desc->hdr.entry_point = part->loadaddr; - desc->hdr.size = (part->size > 0) ? part->size : size; - desc->hdr.data_length = desc->hdr.size; - - offset += desc->hdr.size; - size -= desc->hdr.size; - } - - msync(fis_desc, fis_erasesize, MS_SYNC|MS_INVALIDATE); - fis_close(); - - return 0; -} |