[U-Boot] MMC boot / mvebu / clearfog
Hi!
MMC boot on the ClearFog (base) still seems to fail (uart boot works fine apart from uart detection). The SPL seems to finish successfully and jump to u-boot but there is no further output then. I'm trying to enable even more `DEBUG` but help is indeed welcome!
Regards
Christoph
================================================================= spl_init()
U-Boot SPL 2016.09-dirty (Oct 02 2016 - 22:04:41) High speed PHY - Version: 2.0 Detected Device ID 6828 board SerDes lanes topology details: | Lane # | Speed | Type | -------------------------------- | 0 | 3 | SATA0 | | 1 | 0 | SGMII1 | | 2 | 5 | PCIe1 | | 3 | 5 | USB3 HOST1 | | 4 | 5 | PCIe2 | | 5 | 0 | SGMII2 | -------------------------------- PCIe, Idx 1: detected no link PCIe, Idx 2: detected no link High speed PHY - Ended Successfully DDR3 Training Sequence - Ver TIP-1.29.0 DDR3 Training Sequence - Switching XBAR Window to FastPath Window DDR3 Training Sequence - Ended Successfully BOOTROM_REG=0xe7001000 boot_device=0xe SAR_REG=0xdb00331e boot_device=0x31
spl:board_init_r()
BOOTROM_REG=0xe7001000 boot_device=0xe SAR_REG=0xdb00331e boot_device=0x31 Trying to boot from MMC1 sdhci_transfer_data: Error detected in status(0x408000)! spl: mmc boot mode: raw hdr read sector 141, count=1 mkimage signature not found - ih_magic = e1a0000d read 190 sectors to 800000 Jumping to U-Boot SPL malloc() used 0x394 bytes (0 KB) loaded - jumping to U-Boot...image entry point: 0x800000
Hi!
Christoph Egger christoph@christoph-egger.org writes:
hdr read sector 141, count=1
Looking at the binary it seems to have the expected magic at sector 140 == 0x28000 and the "wrong magic" at sector 141 == 0x28200 indeed. I guess this comes from SD cards where the kwb blob is written with 1 sector offset while on eMMC it has to be written directly to the start of the mmc device.
Christoph
[0] http://wiki.solid-run.com/doku.php?id=products:a38x:software:development:u-b...
Hi!
Christoph Egger christoph@christoph-egger.org writes:
Christoph Egger christoph@christoph-egger.org writes:
hdr read sector 141, count=1
Looking at the binary it seems to have the expected magic at sector 140 == 0x28000 and the "wrong magic" at sector 141 == 0x28200 indeed. I guess this comes from SD cards where the kwb blob is written with 1 sector offset while on eMMC it has to be written directly to the start of the mmc device.
Indeeed, the following patch fixes MMC booting for me (and most certainly breaks SD card booting)
Christoph
diff --git a/include/configs/clearfog.h b/include/configs/clearfog.h index 6cbdee2..5e049bd 100644 --- a/include/configs/clearfog.h +++ b/include/configs/clearfog.h @@ -143,8 +143,7 @@ #define CONFIG_SPL_LIBDISK_SUPPORT #define CONFIG_SYS_MMC_U_BOOT_OFFS (160 << 10) #define CONFIG_SYS_U_BOOT_OFFS CONFIG_SYS_MMC_U_BOOT_OFFS -#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR ((CONFIG_SYS_U_BOOT_OFFS / 512)\ - + 1) +#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR (CONFIG_SYS_U_BOOT_OFFS / 512) #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS ((512 << 10) / 512) /* 512KiB */ #ifdef CONFIG_SPL_BUILD #define CONFIG_FIXED_SDHCI_ALIGNED_BUFFER 0x00180000 /* in SDRAM */
Hi!
Christoph Egger christoph@christoph-egger.org writes:
Indeeed, the following patch fixes MMC booting for me (and most certainly breaks SD card booting)
It actually seems to be somewhat more difficult. It worked because I had a old u-boot image at mmcblk0 at offset 1 block and a new u-boot at mmcblk0boot0. (old ~ before removing the +1). I guess u-boot gets loaded from the mmc0boot0 device (which is also where the SPL is from) and as soon as the post-SPL u-boot tries to access it's own bytes it falls over to mmcblk0.
I have a working setup by
dd if=u-boot-spl.kwb of=/dev/mmcblk0boot0 bs=512 dd if=u-boot-spl.kwb of=/dev/mmcblk0 bs=512 seek=1 skip=1
(skipping the first sector to keep the MBR alive and assuming it only contains SPL code anyway)
Christoph
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Christoph Egger