On 16/02/2016 11:43, John kerry wrote: > Hi > > I am trying to write mac address and Serial number in ART partition. > > Creating 6 MTD partitions on "spi0.0": > 0x000000000000-0x000000040000 : "u-boot" > 0x000000040000-0x000000050000 : "u-boot-env" > 0x000000050000-0x000000680000 : "rootfs" > mtd: partition "rootfs" set to be root filesystem > mtd: partition "rootfs_data" created automatically, ofs=5B0000, len=D0000 > 0x0000005b0000-0x000000680000 : "rootfs_data" > 0x000000680000-0x0000007f0000 : "kernel" > 0x0000007f0000-0x000000800000 : "art" > 0x000000050000-0x0000007e0000 : "firmware" > > cat /proc/mtd > dev: size erasesize name > mtd0: 00040000 00010000 "u-boot" > mtd1: 00010000 00010000 "u-boot-env" > mtd2: 00630000 00010000 "rootfs" > mtd3: 000d0000 00010000 "rootfs_data" > mtd4: 00170000 00010000 "kernel" > mtd5: 00010000 00010000 "art" > mtd6: 00790000 00010000 "firmware" > > Could anyone help me to write wifi mac address and Serial number to ART > partition without overwriting on calibration data. > > Thanks, > John >
Hi, you need to read the whole partition, edit it and write it back. there is no way to just write 6 bytes without previously deleting all data and then writing a 64k sector. John > > _______________________________________________ > openwrt-devel mailing list > openwrt-devel@lists.openwrt.org > https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel > _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
