u-boot 2022-07 on STM32F746G-DISCO

[Waldemar Brodkorb]

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.

When I revert this commit on master I get:
U-Boot SPL 2022.10-rc5-00001-gdbcc7add19-dirty (Sep 20 2022 -
00:59:21 +0200)
Trying to boot from XIP


U-Boot 2022.10-rc5-00001-gdbcc7add19-dirty (Sep 20 2022 - 00:59:21
+0200)

Model: STMicroelectronics STM32F746-DISCO board
DRAM:  8 MiB
stm32fx_rcc_clock rcc at 40023800: set_rate not implemented for clock
index 4
stm32fx_rcc_clock rcc at 40023800: set_rate not implemented for clock
index 4
stm32fx_rcc_clock rcc at 40023800: set_rate not implemented for clock
index 4
Core:  38 devices, 22 uclasses, devicetree: separate
Flash: 1 MiB
MMC:   sdio1 at 40012c00: 0
Loading Environment from nowhere... OK
In:    serial
Out:   serial
Err:   serial
usr button is at LOW LEVEL
Net:
Warning: ethernet at 40028000 (eth0) using random MAC address -
7e:cf:cf:fc:30:4a
eth0: ethernet at 40028000
Hit SPACE in 3 seconds to stop autoboot.
MMC: no card present

looks good without the problematic commit.

best regards
 Waldemar