diff options
Diffstat (limited to 'misc-utils/mtd_debug.c')
| -rw-r--r-- | misc-utils/mtd_debug.c | 397 |
1 files changed, 397 insertions, 0 deletions
diff --git a/misc-utils/mtd_debug.c b/misc-utils/mtd_debug.c new file mode 100644 index 0000000..d6993ce --- /dev/null +++ b/misc-utils/mtd_debug.c @@ -0,0 +1,397 @@ +/* + * Copyright (c) 2d3D, Inc. + * Written by Abraham vd Merwe <abraham@2d3d.co.za> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the author nor the names of other contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#define PROGRAM_NAME "mtd_debug" + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <string.h> +#include <unistd.h> +#include <sys/ioctl.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <mtd/mtd-user.h> +#include "common.h" + +/* + * MEMGETINFO + */ +static int getmeminfo(int fd, struct mtd_info_user *mtd) +{ + return ioctl(fd, MEMGETINFO, mtd); +} + +/* + * MEMERASE + */ +static int memerase(int fd, struct erase_info_user *erase) +{ + return ioctl(fd, MEMERASE, erase); +} + +/* + * MEMGETREGIONCOUNT + * MEMGETREGIONINFO + */ +static int getregions(int fd, struct region_info_user *regions, int *n) +{ + int i, err; + err = ioctl(fd, MEMGETREGIONCOUNT, n); + if (err) + return err; + for (i = 0; i < *n; i++) { + regions[i].regionindex = i; + err = ioctl(fd, MEMGETREGIONINFO, ®ions[i]); + if (err) + return err; + } + return 0; +} + +int erase_flash(int fd, u_int32_t offset, u_int32_t bytes) +{ + int err; + struct erase_info_user erase; + erase.start = offset; + erase.length = bytes; + err = memerase(fd, &erase); + if (err < 0) { + perror("MEMERASE"); + return 1; + } + fprintf(stderr, "Erased %d bytes from address 0x%.8x in flash\n", bytes, offset); + return 0; +} + +void printsize(u_int32_t x) +{ + int i; + static const char *flags = "KMGT"; + printf("%u ", x); + for (i = 0; x >= 1024 && flags[i] != '\0'; i++) + x /= 1024; + i--; + if (i >= 0) + printf("(%u%c)", x, flags[i]); +} + +int flash_to_file(int fd, off_t offset, size_t len, const char *filename) +{ + u_int8_t *buf = NULL; + int outfd, err; + int size = len * sizeof(u_int8_t); + int n = len; + + if (offset != lseek(fd, offset, SEEK_SET)) { + perror("lseek()"); + goto err0; + } + outfd = creat(filename, 0666); + if (outfd < 0) { + perror("creat()"); + goto err1; + } + +retry: + if ((buf = (u_int8_t *) malloc(size)) == NULL) { +#define BUF_SIZE (64 * 1024 * sizeof(u_int8_t)) + fprintf(stderr, "%s: malloc(%#x)\n", __func__, size); + if (size != BUF_SIZE) { + size = BUF_SIZE; + fprintf(stderr, "%s: trying buffer size %#x\n", __func__, size); + goto retry; + } + perror("malloc()"); + goto err0; + } + do { + if (n <= size) + size = n; + err = read(fd, buf, size); + if (err < 0) { + fprintf(stderr, "%s: read, size %#x, n %#x\n", __func__, size, n); + perror("read()"); + goto err2; + } + err = write(outfd, buf, size); + if (err < 0) { + fprintf(stderr, "%s: write, size %#x, n %#x\n", __func__, size, n); + perror("write()"); + goto err2; + } + if (err != size) { + fprintf(stderr, "Couldn't copy entire buffer to %s. (%d/%d bytes copied)\n", filename, err, size); + goto err2; + } + n -= size; + } while (n > 0); + + if (buf != NULL) + free(buf); + close(outfd); + printf("Copied %zu bytes from address 0x%.8"PRIxoff_t" in flash to %s\n", len, offset, filename); + return 0; + +err2: + close(outfd); +err1: + if (buf != NULL) + free(buf); +err0: + return 1; +} + +int file_to_flash(int fd, off_t offset, u_int32_t len, const char *filename) +{ + u_int8_t *buf = NULL; + FILE *fp; + int err; + int size = len * sizeof(u_int8_t); + int n = len; + + if (offset != lseek(fd, offset, SEEK_SET)) { + perror("lseek()"); + return 1; + } + if ((fp = fopen(filename, "r")) == NULL) { + perror("fopen()"); + return 1; + } +retry: + if ((buf = (u_int8_t *) malloc(size)) == NULL) { + fprintf(stderr, "%s: malloc(%#x) failed\n", __func__, size); + if (size != BUF_SIZE) { + size = BUF_SIZE; + fprintf(stderr, "%s: trying buffer size %#x\n", __func__, size); + goto retry; + } + perror("malloc()"); + fclose(fp); + return 1; + } + do { + if (n <= size) + size = n; + if (fread(buf, size, 1, fp) != 1 || ferror(fp)) { + fprintf(stderr, "%s: fread, size %#x, n %#x\n", __func__, size, n); + perror("fread()"); + free(buf); + fclose(fp); + return 1; + } + err = write(fd, buf, size); + if (err < 0) { + fprintf(stderr, "%s: write, size %#x, n %#x\n", __func__, size, n); + perror("write()"); + free(buf); + fclose(fp); + return 1; + } + n -= size; + } while (n > 0); + + if (buf != NULL) + free(buf); + fclose(fp); + printf("Copied %d bytes from %s to address 0x%.8"PRIxoff_t" in flash\n", len, filename, offset); + return 0; +} + +int showinfo(int fd) +{ + int i, err, n; + struct mtd_info_user mtd; + static struct region_info_user region[1024]; + + err = getmeminfo(fd, &mtd); + if (err < 0) { + perror("MEMGETINFO"); + return 1; + } + + err = getregions(fd, region, &n); + if (err < 0) { + perror("MEMGETREGIONCOUNT"); + return 1; + } + + printf("mtd.type = "); + switch (mtd.type) { + case MTD_ABSENT: + printf("MTD_ABSENT"); + break; + case MTD_RAM: + printf("MTD_RAM"); + break; + case MTD_ROM: + printf("MTD_ROM"); + break; + case MTD_NORFLASH: + printf("MTD_NORFLASH"); + break; + case MTD_NANDFLASH: + printf("MTD_NANDFLASH"); + break; + case MTD_MLCNANDFLASH: + printf("MTD_MLCNANDFLASH"); + break; + case MTD_DATAFLASH: + printf("MTD_DATAFLASH"); + break; + case MTD_UBIVOLUME: + printf("MTD_UBIVOLUME"); + default: + printf("(unknown type - new MTD API maybe?)"); + } + + printf("\nmtd.flags = "); + if (mtd.flags == MTD_CAP_ROM) + printf("MTD_CAP_ROM"); + else if (mtd.flags == MTD_CAP_RAM) + printf("MTD_CAP_RAM"); + else if (mtd.flags == MTD_CAP_NORFLASH) + printf("MTD_CAP_NORFLASH"); + else if (mtd.flags == MTD_CAP_NANDFLASH) + printf("MTD_CAP_NANDFLASH"); + else if (mtd.flags == MTD_WRITEABLE) + printf("MTD_WRITEABLE"); + else { + int first = 1; + static struct { + const char *name; + int value; + } flags[] = + { + { "MTD_WRITEABLE", MTD_WRITEABLE }, + { "MTD_BIT_WRITEABLE", MTD_BIT_WRITEABLE }, + { "MTD_NO_ERASE", MTD_NO_ERASE }, + { "MTD_POWERUP_LOCK", MTD_POWERUP_LOCK }, + { NULL, -1 } + }; + for (i = 0; flags[i].name != NULL; i++) { + if (mtd.flags & flags[i].value) { + if (first) { + printf("%s", flags[i].name); + first = 0; + } else { + printf(" | %s", flags[i].name); + } + } + } + } + + printf("\nmtd.size = "); + printsize(mtd.size); + + printf("\nmtd.erasesize = "); + printsize(mtd.erasesize); + + printf("\nmtd.writesize = "); + printsize(mtd.writesize); + + printf("\nmtd.oobsize = "); + printsize(mtd.oobsize); + + printf("\nregions = %d\n\n", n); + + for (i = 0; i < n; i++) { + printf("region[%d].offset = 0x%.8x\n" + "region[%d].erasesize = ", + i, region[i].offset, i); + printsize(region[i].erasesize); + printf("\nregion[%d].numblocks = %d\n" + "region[%d].regionindex = %d\n", + i, region[i].numblocks, + i, region[i].regionindex); + } + return 0; +} + +void showusage(void) +{ + fprintf(stderr, "usage: %1$s info <device>\n" + " %1$s read <device> <offset> <len> <dest-filename>\n" + " %1$s write <device> <offset> <len> <source-filename>\n" + " %1$s erase <device> <offset> <len>\n", + PROGRAM_NAME); + exit(EXIT_FAILURE); +} + +int main(int argc, char *argv[]) +{ + int err = 0, fd; + int open_flag; + + enum { + OPT_INFO, + OPT_READ, + OPT_WRITE, + OPT_ERASE + } option = OPT_INFO; + + /* parse command-line options */ + if (argc == 3 && !strcmp(argv[1], "info")) + option = OPT_INFO; + else if (argc == 6 && !strcmp(argv[1], "read")) + option = OPT_READ; + else if (argc == 6 && !strcmp(argv[1], "write")) + option = OPT_WRITE; + else if (argc == 5 && !strcmp(argv[1], "erase")) + option = OPT_ERASE; + else + showusage(); + + /* open device */ + open_flag = (option == OPT_INFO || option == OPT_READ) ? O_RDONLY : O_RDWR; + if ((fd = open(argv[2], O_SYNC | open_flag)) < 0) + errmsg_die("open()"); + + switch (option) { + case OPT_INFO: + showinfo(fd); + break; + case OPT_READ: + err = flash_to_file(fd, strtoll(argv[3], NULL, 0), strtoul(argv[4], NULL, 0), argv[5]); + break; + case OPT_WRITE: + err = file_to_flash(fd, strtoll(argv[3], NULL, 0), strtoul(argv[4], NULL, 0), argv[5]); + break; + case OPT_ERASE: + err = erase_flash(fd, strtoul(argv[3], NULL, 0), strtoul(argv[4], NULL, 0)); + break; + } + + /* close device */ + if (close(fd) < 0) + errmsg_die("close()"); + + return err; +} |