Hi Waldemar
On 9/19/22 13:48, Waldemar Brodkorb 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@40012c00: 0 In: serial Out: serial Err: serial usr button is at LOW LEVEL Net: Warning: ethernet@40028000 (eth0) using random MAC address - fe:f8:94:5f:5e:26 eth0: ethernet@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.
best regards Waldemar
There are several issues with SPL with STM32F7 based boards. I am currently working on it. A series will be submitted very soon ;-)
Patrice