Le dimanche 9 mai 2010 06:10:37, Michael Evans a écrit : > Yes, that patch indeed solves my problem as well. Why isn't it in a > generic (all platforms) patch area?
Applied in r21408, I assume not that many models needed support for Samsung
flahs parts.
>
> 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 *);
> >> _______________________________________________
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> >> 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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> > KAMIKAZE (bleeding edge) -----------------------
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> > * 10 oz Triple sec mixture into 10 shot glasses.
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