Hi,
On 02/27/2015 12:59 AM, Nathan wrote:
I think I've been able to narrow down, a bit, where the issue is coming from.
"mmc_set_blocklen" led me to "mmc_send_cmd" which showed that there is the "CONFIG_MMC_TRACE" I could use.
A notable difference between hardkernel's u-boot and mainline was the "uint flags;" was no longer in the "mmc_cmd" struct.
I did see that this removal was noted as being a problem back in 2012: http://lists.denx.de/pipermail/u-boot/2012-September/133409.html
The result from "saveenv":
This is too late for debug. The same result I can see when my card is not inserted.
Odroid # saveenv
Saving Environment to MMC...
Writing to MMC(0)... CMD_SEND:16
ARG 0x00000200ret: -19
MMC_RSP_R1,5,6,7 0x00000000I added the "printf" for "ret".
You should follow the card init sequence with the trace config, because it fails at init. This is the trace output from init sequence of my SD card:
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 0x55303447 0x80273727 0x6900E700
DUMPING DATA 000 - 03 53 44 53 004 - 55 30 34 47 008 - 80 27 37 27 012 - 69 00 E7 00 CMD_SEND:3 ARG 0x00000000 MMC_RSP_R1,5,6,7 0xAAAA0520 CMD_SEND:9 ARG 0xAAAA0000 MMC_RSP_R2 0x400E0032 0x5B590000 0x1D8A7F80 0x0A404000
DUMPING DATA 000 - 40 0E 00 32 004 - 5B 59 00 00 008 - 1D 8A 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 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: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 0x00000A00 MMC_RSP_R1,5,6,7 0x00000900 CMD_SEND:12 ARG 0x00000000 MMC_RSP_R1b 0x00000900
I hope this will help you to solve this issue.
Best regards,