mtd: Changed mtd_fixtrx and related functions to be weak references. The weak referen...

[openwrt.git] / package / mtd / src / mtd.c

diff --git a/package/mtd/src/mtd.c b/package/mtd/src/mtd.c
index b2d760e..d14b196 100644 (file)
--- a/package/mtd/src/mtd.c
+++ b/package/mtd/src/mtd.c
@@ -44,36 +44,16 @@
 #include "mtd-api.h"
 #include "fis.h"
 #include "mtd.h"
 #include "mtd-api.h"
 #include "fis.h"
 #include "mtd.h"

-#include "crc32.h"

 
 #define MAX_ARGS 8
 #define JFFS2_DEFAULT_DIR      "" /* directory name without /, empty means root dir */
 
 
 #define MAX_ARGS 8
 #define JFFS2_DEFAULT_DIR      "" /* directory name without /, empty means root dir */
 

-#if __BYTE_ORDER == __BIG_ENDIAN
-#define STORE32_LE(X)           ((((X) & 0x000000FF) << 24) | (((X) & 0x0000FF00) << 8) | (((X) & 0x00FF0000) >> 8) | (((X) & 0xFF000000) >> 24))
-#elif __BYTE_ORDER == __LITTLE_ENDIAN
-#define STORE32_LE(X)           (X)
-#else
-#error unkown endianness!
-#endif
-
-ssize_t pread(int fd, void *buf, size_t count, off_t offset);
-ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset);
-
-#define TRX_MAGIC       0x30524448      /* "HDR0" */
-struct trx_header {
-       uint32_t magic;         /* "HDR0" */
-       uint32_t len;           /* Length of file including header */
-       uint32_t crc32;         /* 32-bit CRC from flag_version to end of file */
-       uint32_t flag_version;  /* 0:15 flags, 16:31 version */
-       uint32_t offsets[3];    /* Offsets of partitions from start of header */
-};
-

 static char *buf = NULL;
 static char *imagefile = NULL;
 static char *jffs2file = NULL, *jffs2dir = JFFS2_DEFAULT_DIR;
 static int buflen = 0;
 int quiet;
 static char *buf = NULL;
 static char *imagefile = NULL;
 static char *jffs2file = NULL, *jffs2dir = JFFS2_DEFAULT_DIR;
 static int buflen = 0;
 int quiet;

+int no_erase;

 int mtdsize = 0;
 int erasesize = 0;
 
 int mtdsize = 0;
 int erasesize = 0;
 


@@ -150,9 +130,9 @@ static int
 image_check(int imagefd, const char *mtd)
 {
        int ret = 1;
 image_check(int imagefd, const char *mtd)
 {
        int ret = 1;

-#ifdef target_brcm
-       ret = trx_check(imagefd, mtd, buf, &buflen);
-#endif
+       if (trx_check) {
+         ret = trx_check(imagefd, mtd, buf, &buflen);
+       }

        return ret;
 }
 
        return ret;
 }
 


@@ -264,82 +244,6 @@ mtd_erase(const char *mtd)
 
 }
 
 
 }
 

-static int
-mtd_fixtrx(const char *mtd, size_t offset)
-{
-       int fd;
-       struct trx_header *trx;
-       char *buf;
-       ssize_t res;
-       size_t block_offset;
-
-       if (quiet < 2)
-               fprintf(stderr, "Trying to fix trx header in %s at 0x%x...\n", mtd, offset);
-
-       block_offset = offset & ~(erasesize - 1);
-       offset -= block_offset;
-
-       fd = mtd_check_open(mtd);
-       if(fd < 0) {
-               fprintf(stderr, "Could not open mtd device: %s\n", mtd);
-               exit(1);
-       }
-
-       if (block_offset + erasesize > mtdsize) {
-               fprintf(stderr, "Offset too large, device size 0x%x\n", mtdsize);
-               exit(1);
-       }
-
-       buf = malloc(erasesize);
-       if (!buf) {
-               perror("malloc");
-               exit(1);
-       }
-
-       res = pread(fd, buf, erasesize, block_offset);
-       if (res != erasesize) {
-               perror("pread");
-               exit(1);
-       }
-
-       trx = (struct trx_header *) (buf + offset);
-       if (trx->magic != STORE32_LE(0x30524448)) {
-               fprintf(stderr, "No trx magic found\n");
-               exit(1);
-       }
-
-       if (trx->len == STORE32_LE(erasesize - offset)) {
-               if (quiet < 2)
-                       fprintf(stderr, "Header already fixed, exiting\n");
-               close(fd);
-               return 0;
-       }
-
-       trx->len = STORE32_LE(erasesize - offset);
-
-       trx->crc32 = STORE32_LE(crc32buf((char*) &trx->flag_version, erasesize - offset - 3*4));
-       if (mtd_erase_block(fd, block_offset)) {
-               fprintf(stderr, "Can't erease block at 0x%x (%s)\n", block_offset, strerror(errno));
-               exit(1);
-       }
-
-       if (quiet < 2)
-               fprintf(stderr, "New crc32: 0x%x, rewriting block\n", trx->crc32);
-
-       if (pwrite(fd, buf, erasesize, block_offset) != erasesize) {
-               fprintf(stderr, "Error writing block (%s)\n", strerror(errno));
-               exit(1);
-       }
-
-       if (quiet < 2)
-               fprintf(stderr, "Done.\n");
-
-       close (fd);
-       sync();
-       return 0;
-
-}
-

 static int
 mtd_refresh(const char *mtd)
 {
 static int
 mtd_refresh(const char *mtd)
 {


@@ -518,31 +422,34 @@ resume:
                }
 
                /* need to erase the next block before writing data to it */
                }
 
                /* need to erase the next block before writing data to it */

-               while (w + buflen > e) {
-                       if (!quiet)
-                               fprintf(stderr, "\b\b\b[e]");
-
-
-                       if (mtd_erase_block(fd, e) < 0) {
-                               if (next) {
-                                       if (w < e) {
-                                               write(fd, buf + offset, e - w);
-                                               offset = e - w;
+               if(!no_erase)
+               {
+                       while (w + buflen > e) {
+                               if (!quiet)
+                                       fprintf(stderr, "\b\b\b[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);

                                        }
                                        }

-                                       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;
+                               /* erase the chunk */
+                               e += erasesize;
+                       }

                }
 
                if (!quiet)
                }
 
                if (!quiet)


@@ -590,17 +497,26 @@ static void usage(void)
        "        refresh                 refresh mtd partition\n"
        "        erase                   erase all data on device\n"
        "        write <imagefile>|-     write <imagefile> (use - for stdin) to device\n"
        "        refresh                 refresh mtd partition\n"
        "        erase                   erase all data on device\n"
        "        write <imagefile>|-     write <imagefile> (use - for stdin) to device\n"

-       "        jffs2write <file>       append <file> to the jffs2 partition on the device\n"
-       "        fixtrx                  fix the checksum in a trx header on first boot\n"
+       "        jffs2write <file>       append <file> to the jffs2 partition on the device\n");
+       if (mtd_fixtrx) {
+           fprintf(stderr,
+       "        fixtrx                  fix the checksum in a trx header on first boot\n");
+       }
+    fprintf(stderr,    

        "Following options are available:\n"
        "        -q                      quiet mode (once: no [w] on writing,\n"
        "                                           twice: no status messages)\n"
        "Following options are available:\n"
        "        -q                      quiet mode (once: no [w] on writing,\n"
        "                                           twice: no status messages)\n"

+       "        -n                      write without first erasing the blocks\n"

        "        -r                      reboot after successful command\n"
        "        -f                      force write without trx checks\n"
        "        -e <device>             erase <device> before executing the command\n"
        "        -d <name>               directory for jffs2write, defaults to \"tmp\"\n"
        "        -r                      reboot after successful command\n"
        "        -f                      force write without trx checks\n"
        "        -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"
-       "        -o offset               offset of the trx header in the partition (for fixtrx)\n"
+       "        -j <name>               integrate <file> into jffs2 data when writing an image\n");
+       if (mtd_fixtrx) {
+           fprintf(stderr,
+       "        -o offset               offset of the image header in the partition(for fixtrx)\n");
+    }
+       fprintf(stderr,

 #ifdef FIS_SUPPORT
        "        -F <part>[:<size>[:<entrypoint>]][,<part>...]\n"
        "                                alter the fis partition table to create new partitions replacing\n"
 #ifdef FIS_SUPPORT
        "        -F <part>[:<size>[:<entrypoint>]][,<part>...]\n"
        "                                alter the fis partition table to create new partitions replacing\n"


@@ -646,12 +562,13 @@ int main (int argc, char **argv)
        force = 0;
        buflen = 0;
        quiet = 0;
        force = 0;
        buflen = 0;
        quiet = 0;

+  no_erase = 0;

 
        while ((ch = getopt(argc, argv,
 #ifdef FIS_SUPPORT
                        "F:"
 #endif
 
        while ((ch = getopt(argc, argv,
 #ifdef FIS_SUPPORT
                        "F:"
 #endif

-                       "frqe:d:j:o:")) != -1)
+                       "frnqe:d:j:o:")) != -1)

                switch (ch) {
                        case 'f':
                                force = 1;
                switch (ch) {
                        case 'f':
                                force = 1;


@@ -659,6 +576,9 @@ int main (int argc, char **argv)
                        case 'r':
                                boot = 1;
                                break;
                        case 'r':
                                boot = 1;
                                break;

+                       case 'n':
+                               no_erase = 1;
+                               break;

                        case 'j':
                                jffs2file = optarg;
                                break;
                        case 'j':
                                jffs2file = optarg;
                                break;


@@ -677,6 +597,10 @@ int main (int argc, char **argv)
                                jffs2dir = optarg;
                                break;
                        case 'o':
                                jffs2dir = optarg;
                                break;
                        case 'o':

+                           if (!mtd_fixtrx) {
+                                   fprintf(stderr, "-o: Only for brcm47xx\n");
+                                       usage();
+                               }

                                errno = 0;
                                offset = strtoul(optarg, 0, 0);
                                if (errno) {
                                errno = 0;
                                offset = strtoul(optarg, 0, 0);
                                if (errno) {


@@ -708,7 +632,7 @@ int main (int argc, char **argv)
        } else if ((strcmp(argv[0], "erase") == 0) && (argc == 2)) {
                cmd = CMD_ERASE;
                device = argv[1];
        } else if ((strcmp(argv[0], "erase") == 0) && (argc == 2)) {
                cmd = CMD_ERASE;
                device = argv[1];

-       } else if ((strcmp(argv[0], "fixtrx") == 0) && (argc == 2)) {
+       } else if (((strcmp(argv[0], "fixtrx") == 0) && (argc == 2)) && mtd_fixtrx) {

                cmd = CMD_FIXTRX;
                device = argv[1];
        } else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) {
                cmd = CMD_FIXTRX;
                device = argv[1];
        } else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) {


@@ -784,7 +708,9 @@ int main (int argc, char **argv)
                        mtd_refresh(device);
                        break;
                case CMD_FIXTRX:
                        mtd_refresh(device);
                        break;
                case CMD_FIXTRX:

-                       mtd_fixtrx(device, offset);
+                   if (mtd_fixtrx) {
+                           mtd_fixtrx(device, offset);
+            }

                        break;
        }
 
                        break;
        }