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author | Felix Fietkau <nbd@openwrt.org> | 2009-09-21 09:58:41 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2009-09-21 09:58:41 +0000 |
commit | 63c91af40444020930fadf0c0bff49aefa35cc68 (patch) | |
tree | 33dded4ca4216980c5056c60fb1e12cab82570d5 /package/mtd/src/mtd.c | |
parent | 87a8e8ac1067f58ba831c4aae443f3655c31cd80 (diff) | |
download | mtk-20170518-63c91af40444020930fadf0c0bff49aefa35cc68.zip mtk-20170518-63c91af40444020930fadf0c0bff49aefa35cc68.tar.gz mtk-20170518-63c91af40444020930fadf0c0bff49aefa35cc68.tar.bz2 |
mtd: add support for rewriting the fis table layout on redboot based systems
SVN-Revision: 17659
Diffstat (limited to 'package/mtd/src/mtd.c')
-rw-r--r-- | package/mtd/src/mtd.c | 249 |
1 files changed, 199 insertions, 50 deletions
diff --git a/package/mtd/src/mtd.c b/package/mtd/src/mtd.c index be4c1be..b9b2763 100644 --- a/package/mtd/src/mtd.c +++ b/package/mtd/src/mtd.c @@ -43,6 +43,7 @@ #include <sys/reboot.h> #include <linux/reboot.h> #include "mtd-api.h" +#include "fis.h" #include "mtd.h" #define MAX_ARGS 8 @@ -119,10 +120,9 @@ int mtd_erase_block(int fd, int offset) mtdEraseInfo.start = offset; mtdEraseInfo.length = erasesize; ioctl(fd, MEMUNLOCK, &mtdEraseInfo); - if (ioctl (fd, MEMERASE, &mtdEraseInfo) < 0) { - fprintf(stderr, "Erasing mtd failed.\n"); - exit(1); - } + if (ioctl (fd, MEMERASE, &mtdEraseInfo) < 0) + return -1; + return 0; } @@ -146,42 +146,78 @@ image_check(int imagefd, const char *mtd) static int mtd_check(const char *mtd) { + char *next = NULL; + char *str = NULL; int fd; - fd = mtd_check_open(mtd); - if (!fd) - return 0; + if (strchr(mtd, ':')) { + str = strdup(mtd); + mtd = str; + } - if (!buf) - buf = malloc(erasesize); + do { + next = strchr(mtd, ':'); + if (next) { + *next = 0; + next++; + } + + fd = mtd_check_open(mtd); + if (!fd) + return 0; + + if (!buf) + buf = malloc(erasesize); + + close(fd); + mtd = next; + } while (next); + + if (str) + free(str); - close(fd); return 1; } static int mtd_unlock(const char *mtd) { - int fd; struct erase_info_user mtdLockInfo; + char *next = NULL; + char *str = NULL; + int fd; - fd = mtd_check_open(mtd); - if(fd <= 0) { - fprintf(stderr, "Could not open mtd device: %s\n", mtd); - exit(1); + if (strchr(mtd, ':')) { + str = strdup(mtd); + mtd = str; } - if (quiet < 2) - fprintf(stderr, "Unlocking %s ...\n", mtd); + do { + next = strchr(mtd, ':'); + if (next) { + *next = 0; + next++; + } + + fd = mtd_check_open(mtd); + if(fd <= 0) { + fprintf(stderr, "Could not open mtd device: %s\n", mtd); + exit(1); + } - mtdLockInfo.start = 0; - mtdLockInfo.length = mtdsize; - if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) { + if (quiet < 2) + fprintf(stderr, "Unlocking %s ...\n", mtd); + + mtdLockInfo.start = 0; + mtdLockInfo.length = mtdsize; + ioctl(fd, MEMUNLOCK, &mtdLockInfo); close(fd); - return 0; - } - - close(fd); + mtd = next; + } while (next); + + if (str) + free(str); + return 0; } @@ -205,11 +241,11 @@ mtd_erase(const char *mtd) for (mtdEraseInfo.start = 0; mtdEraseInfo.start < mtdsize; mtdEraseInfo.start += erasesize) { - + ioctl(fd, MEMUNLOCK, &mtdEraseInfo); if(ioctl(fd, MEMERASE, &mtdEraseInfo)) fprintf(stderr, "Failed to erase block on %s at 0x%x\n", mtd, mtdEraseInfo.start); - } + } close(fd); return 0; @@ -244,27 +280,99 @@ mtd_refresh(const char *mtd) } static int -mtd_write(int imagefd, const char *mtd) +mtd_write(int imagefd, const char *mtd, char *fis_layout) { + char *next = NULL; + char *str = NULL; int fd, result; ssize_t r, w, e; + uint32_t offset = 0; + +#ifdef FIS_SUPPORT + static struct fis_part new_parts[MAX_ARGS]; + static struct fis_part old_parts[MAX_ARGS]; + int n_new = 0, n_old = 0; + + if (fis_layout) { + const char *tmp = mtd; + char *word, *brkt; + int ret; + + memset(&old_parts, 0, sizeof(old_parts)); + memset(&new_parts, 0, sizeof(new_parts)); + + do { + next = strchr(tmp, ':'); + if (!next) + next = (char *) tmp + strlen(tmp); + + memcpy(old_parts[n_old].name, tmp, next - tmp); + + n_old++; + tmp = next + 1; + } while(*next); + + for (word = strtok_r(fis_layout, ",", &brkt); + word; + word = strtok_r(NULL, ",", &brkt)) { + + tmp = strtok(word, ":"); + strncpy((char *) new_parts[n_new].name, tmp, sizeof(new_parts[n_new].name) - 1); + + tmp = strtok(NULL, ":"); + if (!tmp) + goto next; + + new_parts[n_new].size = strtoul(tmp, NULL, 0); + + tmp = strtok(NULL, ":"); + if (!tmp) + goto next; + + new_parts[n_new].loadaddr = strtoul(tmp, NULL, 16); +next: + n_new++; + } + ret = fis_validate(old_parts, n_old, new_parts, n_new); + if (ret < 0) { + fprintf(stderr, "Failed to validate the new FIS partition table\n"); + exit(1); + } + if (ret == 0) + fis_layout = NULL; + } +#endif + + if (strchr(mtd, ':')) { + str = strdup(mtd); + mtd = str; + } + + r = 0; + +resume: + next = strchr(mtd, ':'); + if (next) { + *next = 0; + next++; + } fd = mtd_check_open(mtd); if(fd < 0) { fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } - + if (quiet < 2) fprintf(stderr, "Writing from %s to %s ... ", imagefile, mtd); - r = w = e = 0; + w = e = 0; if (!quiet) fprintf(stderr, " [ ]"); for (;;) { - /* buffer may contain data already (from trx check) */ - do { + /* buffer may contain data already (from trx check or last mtd partition write attempt) */ + while (buflen < erasesize) { r = read(imagefd, buf + buflen, erasesize - buflen); if (r < 0) { if ((errno == EINTR) || (errno == EAGAIN)) @@ -279,7 +387,7 @@ mtd_write(int imagefd, const char *mtd) break; buflen += r; - } while (buflen < erasesize); + } if (buflen == 0) break; @@ -304,16 +412,33 @@ mtd_write(int imagefd, const char *mtd) if (!quiet) fprintf(stderr, "\b\b\b[e]"); - mtd_erase_block(fd, e); + + if (mtd_erase_block(fd, e) < 0) { + if (next) { + if (w < e) { + write(fd, buf + offset, e - w); + offset = e - w; + } + w = 0; + e = 0; + close(fd); + mtd = next; + fprintf(stderr, "\b\b\b \n"); + goto resume; + } else { + fprintf(stderr, "Failed to erase block\n"); + exit(1); + } + } /* erase the chunk */ e += erasesize; } - + if (!quiet) fprintf(stderr, "\b\b\b[w]"); - - if ((result = write(fd, buf, buflen)) < buflen) { + + if ((result = write(fd, buf + offset, buflen)) < buflen) { if (result < 0) { fprintf(stderr, "Error writing image.\n"); exit(1); @@ -325,21 +450,30 @@ mtd_write(int imagefd, const char *mtd) w += buflen; buflen = 0; + offset = 0; } + if (!quiet) - fprintf(stderr, "\b\b\b\b"); + fprintf(stderr, "\b\b\b\b "); done: if (quiet < 2) fprintf(stderr, "\n"); +#ifdef FIS_SUPPORT + if (fis_layout) { + if (fis_remap(old_parts, n_old, new_parts, n_new) < 0) + fprintf(stderr, "Failed to update the FIS partition table\n"); + } +#endif + close(fd); return 0; } static void usage(void) { - fprintf(stderr, "Usage: mtd [<options> ...] <command> [<arguments> ...] <device>\n\n" + fprintf(stderr, "Usage: mtd [<options> ...] <command> [<arguments> ...] <device>[:<device>...]\n\n" "The device is in the format of mtdX (eg: mtd4) or its label.\n" "mtd recognizes these commands:\n" " unlock unlock the device\n" @@ -355,6 +489,12 @@ static void usage(void) " -e <device> erase <device> before executing the command\n" " -d <name> directory for jffs2write, defaults to \"tmp\"\n" " -j <name> integrate <file> into jffs2 data when writing an image\n" +#ifdef FIS_SUPPORT + " -F <part>[:<size>[:<entrypoint>]][,<part>...]\n" + " alter the fis partition table to create new partitions replacing\n" + " the partitions provided as argument to the write command\n" + " (only valid together with the write command)\n" +#endif "\n" "Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards\n" " mtd -r write linux.trx linux\n\n"); @@ -378,6 +518,7 @@ int main (int argc, char **argv) { int ch, i, boot, imagefd = 0, force, unlocked; char *erase[MAX_ARGS], *device = NULL; + char *fis_layout = NULL; enum { CMD_ERASE, CMD_WRITE, @@ -385,14 +526,18 @@ int main (int argc, char **argv) CMD_REFRESH, CMD_JFFS2WRITE } cmd = -1; - + erase[0] = NULL; boot = 0; force = 0; buflen = 0; quiet = 0; - while ((ch = getopt(argc, argv, "frqe:d:j:")) != -1) + while ((ch = getopt(argc, argv, +#ifdef FIS_SUPPORT + "F:" +#endif + "frqe:d:j:")) != -1) switch (ch) { case 'f': force = 1; @@ -410,20 +555,25 @@ int main (int argc, char **argv) i = 0; while ((erase[i] != NULL) && ((i + 1) < MAX_ARGS)) i++; - + erase[i++] = optarg; erase[i] = NULL; break; case 'd': jffs2dir = optarg; break; +#ifdef FIS_SUPPORT + case 'F': + fis_layout = optarg; + break; +#endif case '?': default: usage(); } argc -= optind; argv += optind; - + if (argc < 2) usage(); @@ -439,7 +589,7 @@ int main (int argc, char **argv) } else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) { cmd = CMD_WRITE; device = argv[2]; - + if (strcmp(argv[1], "-") == 0) { imagefile = "<stdin>"; imagefd = 0; @@ -450,7 +600,7 @@ int main (int argc, char **argv) exit(1); } } - + if (!mtd_check(device)) { fprintf(stderr, "Can't open device for writing!\n"); exit(1); @@ -463,7 +613,7 @@ int main (int argc, char **argv) } else if ((strcmp(argv[0], "jffs2write") == 0) && (argc == 3)) { cmd = CMD_JFFS2WRITE; device = argv[2]; - + imagefile = argv[1]; if (!mtd_check(device)) { fprintf(stderr, "Can't open device for writing!\n"); @@ -474,7 +624,7 @@ int main (int argc, char **argv) } sync(); - + i = 0; unlocked = 0; while (erase[i] != NULL) { @@ -484,8 +634,7 @@ int main (int argc, char **argv) unlocked = 1; i++; } - - + switch (cmd) { case CMD_UNLOCK: if (!unlocked) @@ -499,7 +648,7 @@ int main (int argc, char **argv) case CMD_WRITE: if (!unlocked) mtd_unlock(device); - mtd_write(imagefd, device); + mtd_write(imagefd, device, fis_layout); break; case CMD_JFFS2WRITE: if (!unlocked) @@ -512,7 +661,7 @@ int main (int argc, char **argv) } sync(); - + if (boot) do_reboot(); |