On Fri, 3 Mar 2017 15:29:35 -0700 (MST) xiaojimmychen 807065717@qq.com wrote:

Hello everyone!

I am working with my Tiny4412 board, and the u-boot version is U-Boot 2016.11. After burning the u-boot to sd card, and boot my board from it. There are some error ouput to the console. It seems like that my sd card doesn't initialize completely.

I have enabled the MMC Debug configuration(CONFIG_MMC_TRACE). And the console output is as follow:

U-Boot 2016.11-gbf241c8-dirty (Mar 04 2017 - 06:03:43 +0800) for TINY4412

CPU: Exynos4412 @ 1.4 GHz Model: Insignal Tiny4412 evaluation board based on Exynos4412 Board: Insignal Tiny4412 evaluation board based on Exynos4412 DRAM: 1 GiB WARNING: Caches not enabled MMC: SAMSUNG SDHCI: 0, EXYNOS DWMMC: 1 CMD_SEND:0 ARG 0x00000000 MMC_RSP_NONE CMD_SEND:8 ARG 0x000001AA MMC_RSP_R1,5,6,7 0x000001AA CMD_SEND:55 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000120 CMD_SEND:41 ARG 0x40300000 MMC_RSP_R3,4 0x40FF8000 CMD_SEND:55 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000120 CMD_SEND:41 ARG 0x40300000 MMC_RSP_R3,4 0x40FF8000 CMD_SEND:55 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000120 CMD_SEND:41 ARG 0x40300000 MMC_RSP_R3,4 0xC0FF8000 CMD_SEND:2 ARG 0x00000000 MMC_RSP_R2 0x03534453 0x53303847 0x80F3741D 0x31010700

			DUMPING DATA
			000 - 03 53 44 53 
			004 - 53 30 38 47 
			008 - 80 F3 74 1D 
			012 - 31 01 07 00 

CMD_SEND:3 ARG 0x00000000 MMC_RSP_R1,5,6,7 0xAAAA0520 CMD_SEND:9 ARG 0xAAAA0000 MMC_RSP_R2 0x400E0032 0x5B590000 0x3B377F80 0x0A404000

			DUMPING DATA
			000 - 40 0E 00 32 
			004 - 5B 59 00 00 
			008 - 3B 37 7F 80 
			012 - 0A 40 40 00 

CMD_SEND:13 ARG 0xAAAA0000 MMC_RSP_R1,5,6,7 0x00000700 CURR STATE:3 CMD_SEND:7 ARG 0xAAAA0000 MMC_RSP_R1,5,6,7 0x00000700 CMD_SEND:55 ARG 0xAAAA0000 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:51 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:6 ARG 0x00FFFFF1 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:6 ARG 0x00FFFFF1 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:6 ARG 0x00FFFFF1 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:6 ARG 0x00FFFFF1 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:6 ARG 0x80FFFFF1 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:55 ARG 0xAAAA0000 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:6 ARG 0x00000002 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:55 ARG 0xAAAA0000 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:13 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:16 ARG 0x00000200 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:17 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:16 ARG 0x00000200 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:17 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:16 ARG 0x00000200 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:18 ARG 0x00000040 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:12 ARG 0x00000000 MMC_RSP_R1b 0x00000B00 ** First descriptor is NOT a primary desc on 0:1 ** CMD_SEND:16 ARG 0x00000200 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:18 ARG 0x00000031 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:12 ARG 0x00000000 MMC_RSP_R1b 0x00000B00 *** Warning - bad CRC, using default environment

Hit any key to stop autoboot: 0 CMD_SEND:0 ARG 0x00000000 MMC_RSP_NONE CMD_SEND:8 ARG 0x000001AA MMC_RSP_R1,5,6,7 0x000001AA CMD_SEND:55 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000120 CMD_SEND:41 ARG 0x40300000 MMC_RSP_R3,4 0x40FF8000 CMD_SEND:55 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000120 CMD_SEND:41 ARG 0x40300000 MMC_RSP_R3,4 0x40FF8000 CMD_SEND:55 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000120 CMD_SEND:41 ARG 0x40300000 MMC_RSP_R3,4 0xC0FF8000 CMD_SEND:2 ARG 0x00000000 MMC_RSP_R2 0x03534453 0x53303847 0x80F3741D 0x31010700

			DUMPING DATA
			000 - 03 53 44 53 
			004 - 53 30 38 47 
			008 - 80 F3 74 1D 
			012 - 31 01 07 00 

CMD_SEND:3 ARG 0x00000000 MMC_RSP_R1,5,6,7 0xAAAA0520 CMD_SEND:9 ARG 0xAAAA0000 MMC_RSP_R2 0x400E0032 0x5B590000 0x3B377F80 0x0A404000

			DUMPING DATA
			000 - 40 0E 00 32 
			004 - 5B 59 00 00 
			008 - 3B 37 7F 80 
			012 - 0A 40 40 00 

CMD_SEND:13 ARG 0xAAAA0000 MMC_RSP_R1,5,6,7 0x00000700 CURR STATE:3 CMD_SEND:7 ARG 0xAAAA0000 MMC_RSP_R1,5,6,7 0x00000700 CMD_SEND:55 ARG 0xAAAA0000 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:51 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:55 ARG 0xAAAA0000 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:6 ARG 0x00000002 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:55 ARG 0xAAAA0000 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:13 ARG 0x00000000 MMC_RSP_R1,5,6,7 0x00000920 CMD_SEND:16 ARG 0x00000200 MMC_RSP_R1,5,6,7 0x00000900 *CMD_SEND:17 ARG 0x00000000 sdhci_transfer_data: Error detected in status(0x208002)! RET -70* CMD_SEND:16 ARG 0x00000200 MMC_RSP_R1,5,6,7 0x00000900 *CMD_SEND:17 ARG 0x00000000 sdhci_transfer_data: Error detected in status(0x208002)! RET -70* CMD_SEND:16 ARG 0x00000200 MMC_RSP_R1,5,6,7 0x00000900 *CMD_SEND:18 ARG 0x00000040 sdhci_transfer_data: Error detected in status(0x208000)! RET -70* SD/MMC found on device 0 *CMD_SEND:16 ARG 0x00000200 RET -110 CMD_SEND:16 ARG 0x00000200 RET -110 ** ext4fs_devread read error - block Failed to mount ext2 filesystem... ** Unrecognized filesystem type *** *CMD_SEND:16 ARG 0x00000200 RET -110 CMD_SEND:16 ARG 0x00000200 RET -110 ** ext4fs_devread read error - block Failed to mount ext2 filesystem... ** Unrecognized filesystem type ** CMD_SEND:16 ARG 0x00000200 RET -110 CMD_SEND:16 ARG 0x00000200 RET -110 ** ext4fs_devread read error - block Failed to mount ext2 filesystem... ** Unrecognized filesystem type ** Wrong Image Format for bootm command ERROR: can't get kernel image!*

If someone knows how to fix this bug, please help me!

Thanks a lot!

Hello,

Yes, it's a known problem. You could even easily find the information about it in google. This was posted to the U-Boot mailing list some years ago:

https://lists.denx.de/pipermail/u-boot/2015-October/230749.html

Jaehoon Chung promised to have a look at it, but we haven't heard anything back since then. Right now you can try to apply this patch and check if it helps (essentially a revert of a276172cf32386c211c75638f6bf3c0d59ba03ba):

https://github.com/ssvb/u-boot/commit/3dd6fdb016c088953f5f293d62d6df03a0f48d...

BTW, I can't seem to find any Tiny4412 board support code in the current U-Boot git master branch. Are you using a patched U-Boot? And if yes, then do you have plans to contribute these patches?

Thanks.