Hi,
On 17 April 2017 at 16:39, Jaehoon Chung jh80.chung@samsung.com wrote:
On 04/18/2017 06:18 AM, Heinrich Schuchardt wrote:
On 04/16/2017 09:34 PM, Simon Glass wrote:
Hi Alex,
On 16 April 2017 at 04:08, Alexander Graf agraf@suse.de wrote:
On 16.04.17 04:09, Heinrich Schuchardt wrote:
On 04/15/2017 11:51 PM, Andreas Färber wrote:
Am 15.04.2017 um 23:16 schrieb Andreas Färber: > > Am 15.04.2017 um 23:04 schrieb Alexander Graf: >>> >>> Am 15.04.2017 um 22:34 schrieb Andreas Färber afaerber@suse.de: >>>> >>>> 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@70000: 0, mmc@72000: 1, mmc@74000: 2 >>> Using default environment >>> >>> In: serial@4c0 >>> Out: serial@4c0 >>> Err: serial@4c0 >>> Net: eth0: ethernet@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 >> >> >> That looks like efi_disk didn't manage to enumerate any devices? > > > Apparently. The last line comes from > lib/efi_loader_efi_disk:efi_disk_register(), and CONFIG_BLK=y. As you > can see, there is not a single "Scanning disk" line, so I guess we do > not iterate over uclass devices properly? > > On the Odroid-C2 I get this: > > Scanning disk mmc@72000.blk... > Card did not respond to voltage select! > mmc_init: -95, time 9 > Found 1 disks > > Therefore my guess that it matters at what point in time - before or > after the disk we want - the error accessing an MMC device happens.
For comparison, Vega S95 with first MMC node disabled in DT:
Scanning disk mmc@72000.blk... Adding disk device 'mmc@72000.blk' ** First descriptor is NOT a primary desc on 1:1 ** Scanning disk mmc@74000.blk... Adding disk device 'mmc@74000.blk' Found 2 disks
Regards, Andreas
By adding sd_mmc_a to the odroid-c2.dts I was able to reproduce the problem on the Odroid C2.
While booting from SD card via booti still worked bootefi would not find any block device:
=> bootefi hello ## Starting EFI application at 01000000 ... WARNING: Invalid device tree, expect boot to fail efi_add_memory_map: 0x7cf53000 0x1 2 yes uclass_find_device_by_seq: 0 -1 uclass_find_device_by_seq: 0 0
- -1 -1
- -1 -1
- -1 -1
- not found
set_state_simple op missing blk_get_device: if_type=6, devnum=0: mmc@70000.blk, 6, 0 mmc_init: -95, time 1807
This error number is "EOPNOTSUPP". Is "cfg->voltages" correct in meson_gx_mmc.c?
Or it could just be that there is no card inserted? See mmc_start_init(). It would be good to update mmc.c to return different errors for the different cases.
Regards, Simon