* Patch by Arun Dharankar, 24 Mar 2003:
- add threads / scheduler example code
* Add patches by Robert Schwebel, 31 Mar 2003:
- add ctrl-c support for kermit download
- align bdinfo output on ARM
* Add CPU ID, version, and clock speed for INCA-IP
diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index e933120..a041b29 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -1266,6 +1266,7 @@
{
unsigned long nandptr;
struct Nand *mychip;
+ int ret = 0;
if (ofs & (nand->erasesize-1) || len & (nand->erasesize-1)) {
printf ("Offset and size must be sector aligned, erasesize = %d\n",
@@ -1275,6 +1276,17 @@
nandptr = nand->IO_ADDR;
+ /* Select the NAND device */
+ NAND_ENABLE_CE(nand); /* set pin low */
+
+ /* Check the WP bit */
+ NanD_Command(nand, NAND_CMD_STATUS);
+ if (!(READ_NAND(nand->IO_ADDR) & 0x80)) {
+ printf ("nand_write_ecc: Device is write protected!!!\n");
+ ret = -1;
+ goto out;
+ }
+
/* FIXME: Do nand in the background. Use timers or schedule_task() */
while(len) {
mychip = &nand->chips[shr(ofs, nand->chipshift)];
@@ -1288,20 +1300,22 @@
if (READ_NAND(nandptr) & 1) {
printf("Error erasing at 0x%lx\n", (long)ofs);
/* There was an error */
- goto callback;
+ ret = -1;
+ goto out;
}
ofs += nand->erasesize;
len -= nand->erasesize;
}
- callback:
- return 0;
+out:
+ /* De-select the NAND device */
+ NAND_DISABLE_CE(nand); /* set pin high */
+
+ return ret;
}
static inline int nandcheck(unsigned long potential, unsigned long physadr)
{
-
-
return 0;
}