So I can mark the partition with MTD_ERASE_PARTIAL, but I can not see how I can limit erase size to 0x1000 so that only mtd offsets 0x3c000 to 0x3dfff gets erased. The last 128 bytes (0x3ff80 - 3ffff) of the mtd partition on WRT350N v2 are very important and shouldn't be touched. Or should this work out of the box with uboot-envtools?
Maddes On 25.05.2010 23:14, Bernhard Loos wrote: > https://dev.openwrt.org/browser/trunk/target/linux/generic-2.6/patches-2.6.32/222-partial_eraseblock_write.patch > > 2010/5/25 Matthias Buecher / Germany <m...@maddes.net>: >> Both, backfire and latest trunk. >> Can you hint me where this patch is? >> >> Maddes >> >> On 25.05.2010 21:59, Bernhard Loos wrote: >>> There is already a patch for this in openwrt, so it should work (in theory). >>> Do you use trunk or backfire or something older? >>> >>> 2010/5/25 Matthias Buecher / Germany <m...@maddes.net>: >>>> Today I checked out how to access the U-Boot variables of my WRT350N v2 >>>> (Orion) from Linux. >>>> >>>> Installed uboot-envtools and created a fitting /etc/fw_env.config: >>>> # WRT350N v2 >>>> # MTD device name Device offset Env. size Flash sector size >>>> /dev/mtd5 0x0003c000 0x00002000 0x00001000 >>>> >>>> I can read all U-Boot env vars, but not change any. >>>> This seems to be a problem of the huge erase site 0x00010000 of mtd. >>>> Can I specify a separate erase size for the U-Boot partition? >>>> >>>> >>>> static struct mtd_partition wrt350n_v2_nor_flash_partitions[] = { >>>> { >>>> ... >>>> }, { >>>> .name = "u-boot", >>>> .offset = 0x007c0000, >>>> .size = 0x00040000, >>>> }, { >>>> ... >>>> }, >>>> }; >>>> >>>> linux: arch/arm/mach-orion5x/wrt350n-v2-setup.c >>>> >>>> OpenWrt: target/linux/orion/patches/100-openwrt_partition_map.patch >>>> >>>> Maddes >>>> >>>> -- >>>> http://www.maddes.net/ >>>> Home: Earth / Germany / Ruhr-Area >>>> _______________________________________________ >>>> openwrt-devel mailing list >>>> openwrt-devel@lists.openwrt.org >>>> https://lists.openwrt.org/mailman/listinfo/openwrt-devel >>>> >>> _______________________________________________ >>> openwrt-devel mailing list >>> openwrt-devel@lists.openwrt.org >>> https://lists.openwrt.org/mailman/listinfo/openwrt-devel >> _______________________________________________ >> openwrt-devel mailing list >> openwrt-devel@lists.openwrt.org >> https://lists.openwrt.org/mailman/listinfo/openwrt-devel >> > _______________________________________________ > openwrt-devel mailing list > openwrt-devel@lists.openwrt.org > https://lists.openwrt.org/mailman/listinfo/openwrt-devel _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
