[U-Boot] pine64 and "sunxi: Move the SPL stack top to 0x1A000 on Allwinner A64/A80"

[Andre Przywara]

Hi,

On 04/08/16 16:01, Tom Rini wrote:
> Hey guys,
> 
> I just started trying out my Pine64 1GB and mainline U-Boot and I've
> found that:
> commit 1a83fb4a17d959d7b037999ab7ed7e62429abe34
> Author: Siarhei Siamashka <siarhei.siamashka at gmail.com>
> Date:   Tue May 31 01:48:06 2016 +0300
> 
>     sunxi: Move the SPL stack top to 0x1A000 on Allwinner A64/A80
> 
> is breaking boot for me.  boot0 seems to run fine and then the last bit
> of output that I get is:
> boot0: start load other image
> boot0: Loading BL3-1
> Loading file 0 at address 0x40000000,size 0x00000200 success
> boot0: Loading scp
> Loading file 2 at address 0x00040000,size 0x0000c200 success
> set arisc reset to de-assert state
> Ready to disable icache.
> Jump to secend Boot.
> NOTICE:  BL3-1: Running in SRAM A2 (@0x44000)
> NOTICE:  Configuring SPC Controller
> NOTICE:  BL3-1: v1.0(debug):d697594
> NOTICE:  BL3-1: Built : 09:15:57, Aug  4 2016
> NOTICE:  Configuring AXP PMIC
> NOTICE:  PMIC: already configured for RSB
> NOTICE:  PMIC: setup successful
> INFO:    BL3-1: Initializing runtime services
> INFO:    BL3-1: Preparing for EL3 exit to normal world
> INFO:    BL3-1: Next image address: 0x4a000000, SPSR: 0x3c9
> 
> I'm using d697594 from
> https://github.com/apritzel/arm-trusted-firmware.git for ATF and
> boot0.img from the 20160701 Debian "longsleep" image.  Any ideas?

Yes, we were experiencing similar issues, basically it's stuck in
start.S, as far as I could quickly check.
Siarhei and I were doubtful that this commit (which we eyed at before)
could be the culprit, as it _should_ affect only SPL code, which we
don't use atm.
But it turns out that the U-Boot binary is different w/ and w/o anyways.
That's the last debug state I know of.

Siarhei, did you get any further with this?

Simply reverting this commit breaks other things I'm afraid, beside it
would be good to get to the root of the problem.

Tom, can you try reboot several times? You can short pin 4 and 6 on the
"EXP" connector (for instance with a screwdriver ;-), if you don't have
a reset button soldered.
I experienced it works occasionally, which gives me the creeps, tbh.

Cheers,
Andre.