[U-Boot] socfpga 2016.05, CV socdk Rev E1, SPL and u-boot fail when booting from QSPI

[Sylvain Lesne <lesne@alse-fr.com>]

Hi Marek, Christian,

On 06/23/2016 03:07 PM, Marek Vasut wrote:
> On 06/22/2016 06:37 PM, Christian Didriksson wrote:
>> Hi Marek,
>
> Hi!
>
>> [..]
>>
>> I skipped booting from QSPI and started all over with a vanilla
2016.05 and built the u-boot-with-spl.sfp. Put it on an SD-card and booted:
>>
>> U-Boot SPL 2016.05-gbb88b7b-dirty (Jun 22 2016 - 14:53:14)
>> drivers/ddr/altera/sequencer.c: Preparing to start memory calibration
>> drivers/ddr/altera/sequencer.c: CALIBRATION PASSED
>> drivers/ddr/altera/sequencer.c: Calibration complete
>> Trying to boot from MMC1
>>
>> This printout is repeated forever.
>>
>> I then connected DS5 via the USB-Blaster cable and single stepped
through the SPL and after a while, down in mmc_init, I loose connection
to the target and when I interrupt it the PC is here:
>
> mmc_init causes data abort ? That is _weird_ .
>
>> #ifdef CONFIG_SPL_BUILD
>>
>> 	.align	5
>> undefined_instruction:
>> software_interrupt:
>> prefetch_abort:
>> data_abort:
>> not_used:
>> irq:
>> fiq:
>>
>> 1:
>> 	bl	1b			/* hang and never return */
>>
>> #else	/* !CONFIG_SPL_BUILD */
>>
>> I will send you my binary for test on your Rev c board if you can
find the time.
>>
>> I also tested the binary you sent me last week and it behaves
identically regarding the printouts and reboot.
>
> Works on my rev C1:
>
> U-Boot SPL 2016.05-gbb88b7b-dirty (Jun 22 2016 - 14:53:14)
> drivers/ddr/altera/sequencer.c: Preparing to start memory calibration
> drivers/ddr/altera/sequencer.c: CALIBRATION PASSED
> drivers/ddr/altera/sequencer.c: Calibration complete
> Trying to boot from MMC1
>
>
> U-Boot 2016.05-gbb88b7b-dirty (Jun 22 2016 - 14:53:14 +0200)
>
> CPU:   Altera SoCFPGA Platform
> FPGA:  Altera Cyclone V, SE/A6 or SX/C6 or ST/D6, version 0x0
> BOOT:  SD/MMC External Transceiver (1.8V)
>        Watchdog enabled
> I2C:   ready
> DRAM:  1 GiB
> MMC:   dwmmc0 at ff704000: 0
> In:    serial
> Out:   serial
> Err:   serial
> Model: Altera SOCFPGA Cyclone V SoC Development Kit
> Net:   eth0: ethernet at ff702000
> Hit any key to stop autoboot:  0
> =>
> =>
> =>
> => ver
>
> U-Boot 2016.05-gbb88b7b-dirty (Jun 22 2016 - 14:53:14 +0200)
> arm-cortexa9_neon-linux-uclibcgnueabihf-gcc (crosstool-NG
> crosstool-ng-1.22.0-129-ga41b269) 5.3.0
> GNU ld (crosstool-NG crosstool-ng-1.22.0-129-ga41b269) 2.26.20160125
>
>

I think this might be related to something we discussed last month
(starting from [1])!

Am I right to assume that:
- Marek, you have the A2 partition starting at the sector 2048 of the
SD card? (I think that this is the partitioning of the reference
designs)
- Christian, your SD card partitioning is different?

The 2016.05 socfpga SPL loads U-Boot from a fixed offset on the SD
card, and this could explain why you both have a different behavior
if you have different offsets for your partitions!

So, Christian, you could try to move your A2 partition (which
contains u-boot-with-spl.sfp ) to the offset that the SPL expects, ie:

----------8<-------------------8<---------------
$ sudo fdisk -l /dev/sdc

Disk /dev/sdc: 7969 MB, 7969177600 bytes
246 heads, 62 sectors/track, 1020 cylinders, total 15564800 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdc1 2000000 3000000 500000+ b W95 FAT32
/dev/sdc2 14000 1999999 993000 83 Linux
/dev/sdc3 2048 4096 1024+ a2 Unknown

Partition table entries are not in disk order
----------8<-------------------8<---------------

Or else, if you'd rather keep your SD layout, Marek accepted a patch
that will be in v2016.07 (I think) to enable loading U-Boot from an
offset starting@the beginning of a partition (the third one by
default): [2]

However, if you want to apply this patch in v2016.05, you should
enable CONFIG_SPL_SYS_MALLOC_SIMPLE, and also apply [3] due to size
constraints.

[1]: http://lists.denx.de/pipermail/u-boot/2016-May/256580.html
[2]:
http://git.denx.de/?p=u-boot.git;a=commit;h=d31e9c575f24f4b7f5f382ccae70d7a86bbc379d
[3]:
http://git.denx.de/?p=u-boot.git;a=commit;h=1254667689a5a4accc149fef6ff69da760001b2b

Hope this helps,
Sylvain