On Tue, Jan 25, 2011 at 19:56, Aaron Williams Aaron.Williams@caviumnetworks.com wrote:
I ran into a problem with the Spansion S29GL064N flash chip in that it returns a manufacturer ID of 0 and it also requires the AMD geometry fixup.
Additionally, I modified a few print statements to use KiB/MiB instead of kB/MB.
-Aaron Williams
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index dd394a8..105eb3f 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -1162,10 +1162,10 @@ void flash_print_info (flash_info_t * info) info->name, (info->portwidth << 3), (info->chipwidth << 3)); if (info->size < 1024*1024)
- printf (" Size: %ld kB in %d Sectors\n",
- printf (" Size: %ld KiB in %d Sectors\n",
info->size >> 10, info->sector_count); else
- printf (" Size: %ld MB in %d Sectors\n",
- printf (" Size: %ld MiB in %d Sectors\n",
info->size >> 20, info->sector_count); printf (" "); switch (info->vendor) { @@ -1924,6 +1924,7 @@ ulong flash_get_size (phys_addr_t base, int banknum)
/* Do manufacturer-specific fixups */ switch (info->manufacturer_id) {
- case 0x0000:
case 0x0001: flash_fixup_amd(info, &qry); break;
I think something is wrong here. You shouldn't get a manufacturer ID of 0000 from a Spansion part. cmdset_amd_read_jedec_ids() should be where it's coming from, reading the datasheet is pretty clear that these parts return an 0001 or 01 depending on the BYTE# pin. I've used other parts in the series GL128N, GL256N, GL256P that have the same command set and not seen this.