summaryrefslogtreecommitdiff
path: root/misc-utils/mtd_debug.c
diff options
context:
space:
mode:
Diffstat (limited to 'misc-utils/mtd_debug.c')
-rw-r--r--misc-utils/mtd_debug.c397
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, &regions[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;
+}