u-boot 2022-07 on STM32F746G-DISCO

[Waldemar Brodkorb]

Hi Patrice, Hi Simon,
Patrice CHOTARD wrote,

> Hi Waldemar
> 
> On 9/20/22 01:12, Waldemar Brodkorb wrote:
> > Hi Simon,
> > Simon Glass wrote,
> > 
> >> Hi Waldemar,
> >>
> >> On Mon, 19 Sept 2022 at 13:48, Waldemar Brodkorb <wbx at openadk.org> wrote:
> >>>
> >>> Hi again,
> >>>
> >>> Waldemar Brodkorb wrote,
> >>>
> >>>> Hi,
> >>>>
> >>>> I am trying to run u-boot on a STM32F746G-DISCO device.
> >>>> I am configuring u-boot with stm32f746-disco_spl_defconfig.
> >>>>
> >>>> But nothing happens on the LCD nor on the serial console.
> >>>> I use screen /dev/ttyACM0 115200 under Linux to connect.
> >>>
> >>> It seems my USB port on my laptop was buggy, after reboot I get
> >>> following output via serial console:
> >>>
> >>> U-Boot SPL 2022.07 (Sep 19 2022 - 13:20:08 +0200)
> >>> Trying to boot from XIP
> >>>
> >>>
> >>> U-Boot 2022.07 (Sep 19 2022 - 13:20:08 +0200)
> >>>
> >>> Model: STMicroelectronics STM32F746-DISCO board
> >>> DRAM:  8 MiB
> >>> Hard fault
> >>> pc : 080087d6    lr : c05aa775    xPSR : a1000000
> >>> r12 : 00000010   r3 : 080087c1    r2 : 0805344d
> >>> r1 : 08008001    r0 : c05aa000
> >>> Resetting CPU ...
> >>>
> >>> resetting ...
> >>>
> >>> I get a Hard fault. I then tried an older version of u-boot using
> >>> the information from https://github.com/fdu/STM32F746G-disco_Buildroot
> >>> as a hint. With U-Boot 2018.11 I get a working binary (I had to
> >>> disable Falcon mode):
> >>>
> >>> U-Boot SPL 2018.11 (Sep 19 2022 - 13:41:50 +0200)
> >>> Trying to boot from XIP
> >>>
> >>>
> >>> U-Boot 2018.11 (Sep 19 2022 - 13:41:50 +0200)
> >>>
> >>> Model: STMicroelectronics STM32F746-DISCO board
> >>> DRAM:  8 MiB
> >>> Flash: 1 MiB
> >>> MMC:   sdio at 40012c00: 0
> >>> In:    serial
> >>> Out:   serial
> >>> Err:   serial
> >>> usr button is at LOW LEVEL
> >>> Net:
> >>> Warning: ethernet at 40028000 (eth0) using random MAC address -
> >>> fe:f8:94:5f:5e:26
> >>> eth0: ethernet at 40028000
> >>> Hit SPACE in 3 seconds to stop autoboot.
> >>> Wrong Image Format for bootm command
> >>> ERROR: can't get kernel image!
> >>> U-Boot >
> >>>
> >>> Seems like a regression to me.
> >>
> >> Yes, can you use git bisect to find it?
> > 
> > cd82f199852d88218e1f17f5ec07cdd9112a89c4 is the first bad commit.
> 
> I remember i encountered an issue with patch in the past and by updating my toolchain > everything goes fine.
> 
> Which toolchain version do you use ?

I used arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-eabi.tar.xz from
ARM.
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
 
> On my side i am using this one :
> https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/11.1.0/x86_64-gcc-11.1.0-nolibc-arm-linux-gnueabi.tar.xz

Well it really seems to be an toolchain issue, with this one I can
compile U-Boot master and it runs on the system without failure.

best regards
 Waldemar