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Android 13.4.1 can't boot on SD card on iMX6Solo board

Question asked by William Tung on Feb 12, 2013
Latest reply on Feb 23, 2013 by Prasanna Kulkarni
Branched to a new discussion

We have a iMX6 solo board that comes with SD card on SD3 and eMMC on SD4. We downloaded Linux 3.0.35_3.0.0 and Android 13.4.1 and then patched with board specific files on kernel and uboot. The solo board can boot to Linux and mount ubuntu filesystem on SD card without any problem. However, it failed to boot to Android and stopped after "Freeing init memory: 192K". I think it stuck at mounting filesystem (on fs) from init.freescale.rc.

on fs

# mount ext4 partitions

    mount ext4 /dev/block/mmcblk0p5 /system

    mount ext4 /dev/block/mmcblk0p5 /system ro remount

    mount ext4 /dev/block/mmcblk0p7 /data nosuid nodev nodiratime noatime errors=panic,discard,nomblk_io_submit,noauto_da_alloc

    mount ext4 /dev/block/mmcblk0p6 /cache nosuid nodev

    mount ext4 /dev/block/mmcblk0p8 /device ro nosuid nodev

I then commented all lines above and mounted as NFS. The board can boot to Android desktop with poor performance due to solo + 512MB RAM. It comes with new problem that service wpa_supplicant fails to load. I got error message from logcat:

no such service 'wpa_supplicant:-iwlan0 -c/data/misc/wifi/wpa_supplicant.conf'

I followed this document to get rid of ramdisk: All Board Android Without Ramdisk

I prepared one SD card, created one partition, formatted as ext3, copied RFS onto it. The solo board can boot up to Android desktop with parameter "noinitrd root=/dev/mmcblk0p1" but same error on wpa_supplicant service.

We have a quad board that comes with same SD card (SD3) and eMMC (SD4). There's no problem to boot from either SD card or eMMC. The same Intel wifi module works on the quad board.

I've tried to use ramdisk.img from but same result stuck after "Freeing init memory: 192K". Can somebody point out how to boot solo board from SD card? Any suggestions and comments are appreciated.