Yes, that patch indeed solves my problem as well. Why isn't it in a
generic (all platforms) patch area?
On Sat, May 8, 2010 at 5:13 AM, <j...@phrozen.org> wrote:
> could you try if
> trunk/target/linux/etrax/patches-2.6.32/200-samsung_flash.patch
> fixes your issues ?
>
> Quoting "Michael J. Evans" <mjevans1...@gmail.com>:
>
>> At LEAST
>> 8MB flash: K8D6316UBM-PI07 Samsung Electronics 64M Bit
>> (8M x8/4M x16) Dual Bank NOR Flash Memory
>> memory falls in to the else statement. However it otherwise functions.
>>
>> if (extp->MajorVersion != '1' ||
>> (extp->MinorVersion < '0' || extp->MinorVersion > '4')) {
>> if (cfi->mfr == MANUFACTURER_SAMSUNG &&
>> (extp->MajorVersion == '3' && extp->MinorVersion == '3')) {
>> printk(KERN_NOTICE " Newer Samsung flash detected, "
>> "should be compatibile with Amd/Fujitsu.\n");
>> }
>> else {
>> ...
>> }
>> }
>>
>> Note that it does so, and continue using the chip to //prevent// this
>> result:
>>
>> physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank
>> Amd/Fujitsu Extended Query Table at 0x0040
>> Unknown Amd/Fujitsu Extended Query version 0.0.
>> gen_probe: No supported Vendor Command Set found
>> physmap-flash physmap-flash.0: map_probe failed
>> VFS: Cannot open root device "<NULL>" or unknown-block(0,0)
>> Please append a correct "root=" boot option; here are the available
>> partitions:
>> Kernel panic - not syncing: VFS: Unable to mount root fs on
>> unknown-block(0,0)
>>
>> Signed-off-by: Michael J. Evans <mjevans1...@gmail.com>
>>
>> --- a/drivers/mtd/chips/cfi_cmdset_0002.c
>> +++ b/drivers/mtd/chips/cfi_cmdset_0002.c
>> @@ -83,7 +83,7 @@ static struct mtd_chip_driver cfi_amdstd_chipdrv = {
>> };
>>
>>
>> -/* #define DEBUG_CFI_FEATURES */
>> +#define DEBUG_CFI_FEATURES
>>
>>
>> #ifdef DEBUG_CFI_FEATURES
>> @@ -368,6 +368,8 @@ struct mtd_info *cfi_cmdset_0002(struct map_info
>> *map, int primary)
>>
>> extp = (struct cfi_pri_amdstd*)cfi_read_pri(map, adr,
>> sizeof(*extp), "Amd/Fujitsu");
>> if (!extp) {
>> + printk(KERN_INFO
>> + "Flash chip doesn't appear to use the
>> Amd/Fujitsu command set.\n");
>> kfree(mtd);
>> return NULL;
>> }
>> @@ -382,12 +384,10 @@ struct mtd_info *cfi_cmdset_0002(struct map_info
>> *map, int primary)
>> "should be compatibile with
>> Amd/Fujitsu.\n");
>> }
>> else {
>> - printk(KERN_ERR " Unknown Amd/Fujitsu
>> Extended Query "
>> - "version %c.%c.\n",
>> extp->MajorVersion,
>> + printk(KERN_ERR " WARNING: Unknown
>> Amd/Fujitsu Extended Query "
>> + "vendor: %4x version %c.%c. If defaults
>> fail look up the chip.\n",
>> + (int) cfi->mfr, extp->MajorVersion,
>> extp->MinorVersion);
>> - kfree(extp);
>> - kfree(mtd);
>> - return NULL;
>> }
>> }
>>
>>
>> --- a/drivers/mtd/chips/cfi_probe.c
>> +++ b/drivers/mtd/chips/cfi_probe.c
>> @@ -18,7 +18,7 @@
>> #include <linux/mtd/cfi.h>
>> #include <linux/mtd/gen_probe.h>
>>
>> -//#define DEBUG_CFI
>> +#define DEBUG_CFI
>>
>> #ifdef DEBUG_CFI
>> static void print_cfi_ident(struct cfi_ident *);
>> _______________________________________________
>> openwrt-devel mailing list
>> openwrt-devel@lists.openwrt.org
>> https://lists.openwrt.org/mailman/listinfo/openwrt-devel
>>
>
>
>
> --
> John Crispin
> hacking, coding, etc
> blogic on irc
>
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