1 files changed, 126 insertions, 0 deletions

diff --git a/meta/packages/uboot/u-boot-mkimage-openmoko-native/nand-createbbt.patch b/meta/packages/uboot/u-boot-mkimage-openmoko-native/nand-createbbt.patch
new file mode 100644
index 0000000000..74b79da0a9
--- /dev/null
+++ b/meta/packages/uboot/u-boot-mkimage-openmoko-native/nand-createbbt.patch
@@ -0,0 +1,126 @@
+This patch adds user-requested BBT creation. It includes the following changes:
+
+- common/cmd_nand.c: move yes/no decision to separate function
+- do_nand: ask for confirmation for "nand erase"
+- do_nand: add command "nand createbbt" to erase NAND and create a new BBT
+
+Experimental.
+
+- Werner Almesberger <werner@openmoko.org>
+
+
+Index: u-boot/common/cmd_nand.c
+===================================================================
+--- u-boot.orig/common/cmd_nand.c       2007-02-16 23:53:28.000000000 +0100
++++ u-boot/common/cmd_nand.c    2007-02-16 23:53:57.000000000 +0100
+@@ -163,6 +163,17 @@
+        return 0;
+ }
+ 
++static int yes(void)
++{
++       char c;
++
++       c = getc();
++       if (c != 'y' && c != 'Y')
++               return 0;
++       c = getc();
++       return c == '\r' || c == '\n';
++}
++
+ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+ {
+        int i, dev, ret;
+@@ -228,7 +239,8 @@
+            strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
+            strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
+            strcmp(cmd, "biterr") != 0 &&
+-           strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 )
++           strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 &&
++           strcmp(cmd, "createbbt") != 0 )
+                goto usage;
+ 
+        /* the following commands operate on the current device */
+@@ -283,13 +295,23 @@
+                             "are sure of what you are doing!\n"
+                             "\nReally scrub this NAND flash? <y/N>\n");
+ 
+-                       if (getc() == 'y' && getc() == '\r') {
++                       if (yes()) {
+                                opts.scrub = 1;
+                        } else {
+                                puts("scrub aborted\n");
+                                return -1;
+                        }
+                }
++               else {
++                       if (opts.length == nand->size) {
++                               puts("Really erase everything ? <y/N>\n");
++                               if (!yes()) {
++                                       puts("erase aborted\n");
++                                       return -1;
++                               }
++                       }
++               }
++
+                ret = nand_erase_opts(nand, &opts);
+                printf("%s\n", ret ? "ERROR" : "OK");
+ 
+@@ -458,6 +480,33 @@
+                return 0;
+        }
+ 
++       if (strcmp(cmd, "createbbt") == 0) {
++               struct nand_chip *nand_chip = nand->priv;
++               nand_erase_options_t opts;
++
++               puts("Create BBT and erase everything ? <y/N>\n");
++               if (!yes()) {
++                       puts("createbbt aborted\n");
++                       return -1;
++               }
++               memset(&opts, 0, sizeof(opts));
++               opts.length = nand->size;
++               if (nand_erase_opts(nand, &opts)) {
++                       puts("Erase failed\n");
++                       return 1;
++               }
++               nand_chip->options &= ~NAND_DONT_CREATE_BBT;
++               puts("Creating BBT. Please wait ...");
++               if (nand_default_bbt(nand)) {
++                       puts("\nFailed\n");
++                       return 1;
++               }
++               else {
++                       puts("\n");
++                       return 0;
++               }
++       }
++
+ usage:
+        printf("Usage:\n%s\n", cmdtp->usage);
+        return 1;
+@@ -478,7 +527,8 @@
+        "nand markbad off - mark bad block at offset (UNSAFE)\n"
+        "nand biterr off - make a bit error at offset (UNSAFE)\n"
+        "nand lock [tight] [status] - bring nand to lock state or display locked pages\n"
+-       "nand unlock [offset] [size] - unlock section\n");
++       "nand unlock [offset] [size] - unlock section\n"
++       "nand createbbt - create bad block table\n");
+ 
+ static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
+                           ulong offset, ulong addr, char *cmd)
+Index: u-boot/drivers/nand/nand_bbt.c
+===================================================================
+--- u-boot.orig/drivers/nand/nand_bbt.c 2007-02-16 23:53:54.000000000 +0100
++++ u-boot/drivers/nand/nand_bbt.c      2007-02-16 23:53:57.000000000 +0100
+@@ -795,7 +795,8 @@
+ 
+        len = mtd->size >> (this->bbt_erase_shift + 2);
+        /* Allocate memory (2bit per block) */
+-       this->bbt = kmalloc (len, GFP_KERNEL);
++       if (!this->bbt)
++               this->bbt = kmalloc (len, GFP_KERNEL);
+        if (!this->bbt) {
+                printk (KERN_ERR "nand_scan_bbt: Out of memory\n");
+                return -ENOMEM;