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Notes on an SD Card

The camera fails to work with some SD cards. I tried to use two identical micro SD cards by Transcend and in both cases U-Boot failed to properly load my kernel to the RAM. U-Boot complained that the CRC sum of uImage did not match in 90 percent of attempts. Well, there were a few successful tries actually but they were very rare.

Here is what a boot log looks like on a failed attempt:

U-Boot 2011.09 (Sep 21 2018 - 10:14:17)

DRAM:  64 MiB
MMC:   MMC: 0
SPI FLASH: 16 MB
In:    serial
Out:   serial
Err:   serial
GPIO[2] is high
Hit any key to stop autoboot:  0 
reading uImage

2986304 bytes read
reading initramfs.cpio.gz

533651 bytes read
## Booting kernel from Legacy Image at 01000000 ...
   Image Name:   Linux-2.6.35.12
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2986240 Bytes = 2.8 MiB
   Load Address: 00008000
   Entry Point:  00008040
   Verifying Checksum ... Bad Data CRC
ERROR: can't get kernel image!
loadkernel 0x00007FFC 0x1;bootm 0x00008000
Wrong Image Format for bootm command
ERROR: can't get kernel image!
firmware backup support fail....
#

The card that I have tried to use was a 16GB microSDHC I, C10, U1 class card, Transcend TS16GUSD300S.

However an older 8GB Transcend card with only C6 capability works perfectly. Also a 16GB Kingston C10 cards work as well.

sd_card.txt · Last modified: 2018/09/26 04:47 by gozhev