read/write error for eMMC boot of Android

[vamshi krishna]

Hi All,

I have booted Pandaboard in the fastboot mode, by creating GPT
partition table on eMMC. I did necessary modification in u-boot
regarding eMMC. For my board SD is MMC0 and eMMC is MMC1. I am able
to boot and use android. But soon android is hanging (It is happening
when I tried to do read/write operations like creating a new folder or
when device wakes from sleep), I checked the kernel log from dmesg, It
gave me the following errors showing read/writes to eMMC partitions
are failing.

I followed the following link : http://omappedia.org/wiki/Android_eMMC_Booting

I have 16GB eMMC.

What can we infer from the card status 0x400e00, and its changing to
0x00. Please help me in this issue.

This is how my partition table on eMMC
* efi partition table:
256 128K xloader
512 256K bootloader
2048 8M recovery
18432 8M boot
34816 512M system
1083392 256M cache
1607680 512M userdata

$ dmesg

mmcblk0: retrying using single block read
mmcblk0: error -110 sending read/write command, response 0x0, card
status 0x400e00
mmcblk0: error -110 transferring data, sector 401192, nr 8, card
status 0x400e00
end_request: I/O error, dev mmcblk0, sector 401192
end_request: I/O error, dev mmcblk0, sector 401193
mmcblk0: retrying using single block read
mmcblk0: error -110 sending read/write command, response 0x0, card
status 0x400e00
mmcblk0: error -110 transferring data, sector 401192, nr 8, card
status 0x400e00
end_request: I/O error, dev mmcblk0, sector 401192
end_request: I/O error, dev mmcblk0, sector 401193
mmcblk0: retrying using single block read
mmcblk0: error -110 sending read/write command, response 0x0, card
status 0x400e00
mmcblk0: error -110 transferring data, sector 2131976, nr 8, card
status 0x400e00
end_request: I/O error, dev mmcblk0, sector 2131976
end_request: I/O error, dev mmcblk0, sector 2131977
EXT4-fs error (device mmcblk0p7): ext4_read_inode_bitmap: Cannot read
inode bitmap - block_group = 2, inode_bitmap = 65537
Aborting journal on device mmcblk0p7-8.
mmcblk0: error -110 sending read/write command, response 0x0, card
status 0x400e00
mmcblk0: error -110 transferring data, sector 1612056, nr 8, card
status 0x0


Is there any problem in creating file system ?
Thanks,
Vamshi G.

[Tom Mitchell]

How do you deliver power to your panda board?
What devices and cables are connected?
What speed is the 16GB MMC?
What tool was used to establish the partitions?
How and when were the file systems created?

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