代码先锋网 代码片段及技术文章聚合

1、查询FLASH上的分区信息：

root@Hiwooya:~# cat /proc/mtd 
dev:    size   erasesize  name
mtd0: 00030000 00010000 "u-boot"
mtd1: 00010000 00010000 "u-boot-env"
mtd2: 00010000 00010000 "factory"
mtd3: 00fb0000 00010000 "firmware"
mtd4: 00118e3c 00010000 "kernel"
mtd5: 00e971c4 00010000 "rootfs"
mtd6: 009e0000 00010000 "rootfs_data"

2、分区释义 （启动LOG中打印）

[    0.500000] Creating 4 MTD partitions on "spi32766.0":
[    0.510000] 0x000000000000-0x000000030000 : "u-boot"
[    0.520000] 0x000000030000-0x000000040000 : "u-boot-env"
[    0.530000] 0x000000040000-0x000000050000 : "factory"
[    0.540000] 0x000000050000-0x000001000000 : "firmware"
[    0.580000] 2 uimage-fw partitions found on MTD device firmware
[    0.590000] 0x000000050000-0x000000168e3c : "kernel"
[    0.600000] 0x000000168e3c-0x000001000000 : "rootfs"
[    0.610000] mtd: device 5 (rootfs) set to be root filesystem
[    0.630000] 1 squashfs-split partitions found on MTD device rootfs
[    0.640000] 0x000000620000-0x000001000000 : "rootfs_data"

3、拷贝factory（无线校准）数据到www文件夹

root@Hiwooya:~# dd if=/dev/mtd2 of=/www/factory.bin
128+0 records in
128+0 records out
root@Hiwooya:~# ls -l /www/factory.bin
-rw-r--r--    1 root     root         65536 Oct 14 15:37 /www/factory.bin

然后使用FTP或者SCP把文件拷贝出来。