Thanks to Scott Bambrough for noticing this problem: On 08/25/2010 10:15 AM, Matt Waddel wrote: > I am trying to map the nor flash on the Versatile Express platform > to an mtd partition. I have tried a bunch of variations with the > kernel command line "mtdparts" directive, without success. > > Here is the last one I tried: > mtdparts=armflash-1.0:1M(uboot),9M(linux),16M(uInitrd) > > > The kernel seems to detect the flash parts correctly: > ... > armflash-0: Found 2 x16 devices at 0x0 in 32-bit bank > Intel/Sharp Extended Query Table at 0x010A > Intel/Sharp Extended Query Table at 0x010A > Intel/Sharp Extended Query Table at 0x010A > Intel/Sharp Extended Query Table at 0x010A > Intel/Sharp Extended Query Table at 0x010A > Using buffer write method > Using auto-unlock on power-up/resume > cfi_cmdset_0001: Erase suspend on write enabled > armflash-1: Found 2 x16 devices at 0x0 in 32-bit bank > Intel/Sharp Extended Query Table at 0x010A > Intel/Sharp Extended Query Table at 0x010A > Intel/Sharp Extended Query Table at 0x010A > Intel/Sharp Extended Query Table at 0x010A > Intel/Sharp Extended Query Table at 0x010A > Using buffer write method > Using auto-unlock on power-up/resume > cfi_cmdset_0001: Erase suspend on write enabled > Concatenating MTD devices: > (0): "armflash-0" > (1): "armflash-1" > into device "armflash"
I can't access armflash-1 or -0 separately. They are concatenated together under armflash. So the actual cmdline entry needs to include: "mtdparts=armflash:1...@0x4000000(uboot),9...@0x4100000(linux),1...@0x4a00000(uInitrd)" With that fix, the system properly detects the flash mtd partitions: ... 3 cmdlinepart partitions found on MTD device armflash Creating 3 MTD partitions on "armflash": 0x000004000000-0x000004100000 : "uboot" 0x000004100000-0x000004a00000 : "linux" 0x000004a00000-0x000005a00000 : "uInitrd" > RedBoot partition parsing not available > ... > > $ cat /proc/mtd > dev: size erasesize name > <nothing listed> > > Any ideas? > > Thanks, > Matt > > _______________________________________________ > linaro-dev mailing list > linaro-dev@lists.linaro.org > http://lists.linaro.org/mailman/listinfo/linaro-dev _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
