[U-Boot] [PATCH v7 2/3] mmc: meson: add MMC driver for Meson GX (S905)

Andreas Färber
2017-04-15T20:34:05Z

Am 15.04.2017 um 20:27 schrieb Alexander Graf:
> On 15.04.17 20:18, Heiner Kallweit wrote:
>> Am 15.04.2017 um 17:05 schrieb Andreas Färber:
>>> But for the Vega S95 Telos I needed to disable the first of three MMC
>>> nodes (SDIO) - otherwise U-Boot would happily iterate over them for
>>> distro boot with Heinrich's patch, but GRUB would come up with no disks,
>>> so that booting failed. I'm not yet sure why, maybe it's a UEFI-side
>>> problem in that it is the first MMC device that is absent rather than
>>> the last one?
>>>
>> I don't own this device so I can just provide a guess.
>> Based on DT the device ordering most likely is:
>> mmc0: SDIO
>> mmc1: SD
>> mmc2: eMMC
[...]
> If grub comes up, distro boot has successfully found the target binary
> and executed it. For some reason, grub can not find its boot origin though.
>
> Andreas, please add debug prints like the ones below and check that the
> device names match:

U-Boot 2017.05-rc1-00318-g082535f-dirty (Apr 15 2017 - 22:29:17 +0200)
vega-s95

DRAM: 2 GiB
MMC: mmc at 70000: 0, mmc at 72000: 1, mmc at 74000: 2
Using default environment

In: serial at 4c0
Out: serial at 4c0
Err: serial at 4c0
Net: eth0: ethernet at c9410000
Hit any key to stop autoboot: 0
mmc_init: -95, time 1806
MMC Device 0 not found
no mmc device at slot 0
switch to partitions #0, OK
mmc1 is current device
Scanning mmc 1:1...
Setting boot device name to '//boot/dtb/amlogic/meson-gxbb-v'
20335 bytes read in 43 ms (460.9 KiB/s)
Found EFI removable media binary efi/boot/bootaa64.efi
Setting boot device name to '/efi/boot/bootaa64.efi'
reading efi/boot/bootaa64.efi
129024 bytes read in 13 ms (9.5 MiB/s)
## Starting EFI application at 01080000 ...
mmc_init: -95, time 1807
Found 0 disks
Welcome to GRUB!

error: disk `,msdos2' not found.
Entering rescue mode...
grub rescue>

Regards,
Andreas

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