Hello,
Release: android_p11.0.0_2.6.0
Board: i.MX8MQ based custom board
I am currently debugging SPI FLASH and there is already a device file in the file system:
evk_8mq:/ #
evk_8mq:/ # ls /dev/mtd*
/dev/mtd0 /dev/mtd0ro
evk_8mq:/ #
And the block device has already been registered:
evk_8mq:/ #
evk_8mq:/ # ls /dev/block/mtdblock0
/dev/block/mtdblock0
evk_8mq:/ #
My steps:
Step 1: Create jffs2.img
Using the command on ubuntu to create jffs2.img:
sudo mkfs.jffs2- s 0x100 -e 0x10000 -p 0x1AF0000 -d jffs2_rootfs/ -o jffs2.img
The SPI flash model I am using is MT25QL256ABA1EW7, with a block size of 64K and a page size of 256 bytes
Then transfer jffs2.img to the path of Android:
adb push jffs2.img/data
step 2：convert /dev/mtd0 to jff2
./busybox flash_eraseall -j /dev/mtd0
Step 4: Mount/dev/block/mtdblock0 to /mnt/mtd
mount - t jffs2 /dev/block/mtdblock0 /mnt/mtd
But the error is as follows:
[ 474.113521][ T1757] jffs2: Further such events for this erase block will not be printed
[ 474.122219][ T1757] jffs2: Node at 0x00069fdc with length 0x00000144 would run over the end of the erase block
[ 474.132251][ T1757] jffs2: Perhaps the file system was created with the wrong erase size?
[ 474.140520][ T1757] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006a000: 0x1901 instead
[ 474.150725][ T1757] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006a004: 0x0008 instead
[ 474.160923][ T1757] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006a008: 0x3000 instead
[ 474.171129][ T1757] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006a00c: 0x0100 instead
[ 474.181325][ T1757] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006a010: 0x0100 instead
[ 474.191526][ T1757] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006a018: 0xf87e instead
[ 474.201719][ T1757] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006a01c: 0x5a76 instead
[ 474.211927][ T1757] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006a020: 0x7db3 instead
[ 474.222121][ T1757] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006a024: 0xe979 instead
[ 474.232466][ T1757] jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0006a028: 0x21dd instead
[ 474.242665][ T1757] jffs2: Further such events for this erase block will not be printed
[ 474.251374][ T1757] jffs2: Node at 0x0006af0c with length 0x00000144 would run over the end of the erase block
[ 474.261401][ T1757] jffs2: Perhaps the file system was created with the wrong erase size?
How can I solve the problem of mounting errors?
Also: I noticed that there is a tool called mtd utils, but it is only available in the Linux version. Is there an Android version available for use? I have been unable to use Makefile after successful cross compilation.
git://git.infradead.org/mtd-utils.git
