nandwrite或flashcp将原始映像写入mtd设备

Question

我想将图像写入mtd设备。这是mtd设备的/proc/mtd条目。

/ # cat /proc/mtd dev: size erasesize name ... mtd10: 007c0000 00040000 "recovery" ...

首先，我在/ dev / mtd10上执行了flash_eraseall，成功了。 然后，我尝试了flashcp：

flashcp /path/to/image /dev/mtd10

此命令失败，并显示以下错误：

While erasing blocks from 0x00000000-0x00680000 on /dev/mtd10: Invalid argument dmesg出现以下错误：

msm_nand_erase: unsupported erase len, 6815744

但是，如果我使用nandwrite来写图像，写就可以了：

/ # nandwrite -p /dev/mtd10 /path/to/image Writing data to block 0 at offset 0x0 Writing data to block 1 at offset 0x40000 ... Writing data to block 5 at offset 0x140000 ... Writing data to block 17 at offset 0x440000 Writing data to block 18 at offset 0x480000 Writing data to block 19 at offset 0x4c0000 ... Writing data to block 24 at offset 0x600000 Writing data to block 25 at offset 0x640000

nandwrite是推荐将原始映像写入mtd设备的推荐方法吗？