Prepare v2013.07-rc2

[karo-tx-uboot.git] / common / cmd_nand.c

diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index e9d3d3c1bf6238d20ad3abc310cbc306fab473dd..8b1e01ae8094f9a4236f6d9897a8e341121f987c 100644 (file)
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -62,8 +62,8 @@ static int nand_dump(nand_info_t *nand, ulong off, int only_oob, int repeat)
        ops.oobbuf = oobbuf;
        ops.len = nand->writesize;
        ops.ooblen = nand->oobsize;
-       ops.mode = MTD_OOB_RAW;
-       i = nand->read_oob(nand, addr, &ops);
+       ops.mode = MTD_OPS_RAW;
+       i = mtd_read_oob(nand, addr, &ops);
        if (i < 0) {
                printf("Error (%d) reading page %08lx\n", i, off);
                free(datbuf);
@@ -404,13 +404,13 @@ static int raw_access(nand_info_t *nand, ulong addr, loff_t off, ulong count,
                        .oobbuf = ((u8 *)addr) + nand->writesize,
                        .len = nand->writesize,
                        .ooblen = nand->oobsize,
-                       .mode = MTD_OOB_RAW
+                       .mode = MTD_OPS_RAW
                };
 
                if (read)
-                       ret = nand->read_oob(nand, off, &ops);
+                       ret = mtd_read_oob(nand, off, &ops);
                else
-                       ret = nand->write_oob(nand, off, &ops);
+                       ret = mtd_write_oob(nand, off, &ops);
 
                if (ret) {
                        printf("%s: error at offset %llx, ret %d\n",
@@ -425,6 +425,31 @@ static int raw_access(nand_info_t *nand, ulong addr, loff_t off, ulong count,
        return ret;
 }
 
+/* Adjust a chip/partition size down for bad blocks so we don't
+ * read/write/erase past the end of a chip/partition by accident.
+ */
+static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev)
+{
+       /* We grab the nand info object here fresh because this is usually
+        * called after arg_off_size() which can change the value of dev.
+        */
+       nand_info_t *nand = &nand_info[dev];
+       loff_t maxoffset = offset + *size;
+       int badblocks = 0;
+
+       /* count badblocks in NAND from offset to offset + size */
+       for (; offset < maxoffset; offset += nand->erasesize) {
+               if (nand_block_isbad(nand, offset))
+                       badblocks++;
+       }
+       /* adjust size if any bad blocks found */
+       if (badblocks) {
+               *size -= badblocks * nand->erasesize;
+               printf("size adjusted to 0x%llx (%d bad blocks)\n",
+                      (unsigned long long)*size, badblocks);
+       }
+}
+
 static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
        int i, ret = 0;
@@ -521,6 +546,7 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                int scrub = !strncmp(cmd, "scrub", 5);
                int spread = 0;
                int args = 2;
+               int adjust_size = 0;
                const char *scrub_warn =
                        "Warning: "
                        "scrub option will erase all factory set bad blocks!\n"
@@ -537,8 +563,10 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                                spread = 1;
                        } else if (!strcmp(&cmd[5], ".part")) {
                                args = 1;
+                               adjust_size = 1;
                        } else if (!strcmp(&cmd[5], ".chip")) {
                                args = 0;
+                               adjust_size = 1;
                        } else {
                                goto usage;
                        }
@@ -558,6 +586,10 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                                 &maxsize) != 0)
                        return 1;
 
+               /* size is unspecified */
+               if (adjust_size && !scrub)
+                       adjust_size_for_badblocks(&size, off, dev);
+
                nand = &nand_info[dev];
 
                memset(&opts, 0, sizeof(opts));
@@ -642,6 +674,9 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                                                &off, &size, &maxsize) != 0)
                                return 1;
 
+                       /* size is unspecified */
+                       if (argc < 5)
+                               adjust_size_for_badblocks(&size, off, dev);
                        rwsize = size;
                }
 
@@ -680,13 +715,13 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                        mtd_oob_ops_t ops = {
                                .oobbuf = (u8 *)addr,
                                .ooblen = rwsize,
-                               .mode = MTD_OOB_RAW
+                               .mode = MTD_OPS_RAW
                        };
 
                        if (read)
-                               ret = nand->read_oob(nand, off, &ops);
+                               ret = mtd_read_oob(nand, off, &ops);
                        else
-                               ret = nand->write_oob(nand, off, &ops);
+                               ret = mtd_write_oob(nand, off, &ops);
                } else if (raw) {
                        ret = raw_access(nand, addr, off, pagecount, read);
                } else {
@@ -729,7 +764,7 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                while (argc > 0) {
                        addr = simple_strtoul(*argv, NULL, 16);
 
-                       if (nand->block_markbad(nand, addr)) {
+                       if (mtd_block_markbad(nand, addr)) {
                                printf("block 0x%08lx NOT marked "
                                        "as bad! ERROR %d\n",
                                        addr, ret);