x86_64+kvm: int_exception_handler() Exception 13 while executing option rom

[Simon Glass]

Hi Vitaly,

On Sun, 7 Jul 2024 at 06:50, Vitaly Chikunov <vt at altlinux.org> wrote:
>
> Hi,
>
> I noticed that u-boot.rom does not boot in qemu-system-x86_64 (8.2.4)
> with KVM accelerator:
>
>   builder at x86_64:~/RPM/BUILD/u-boot-qemu-2024.07$ qemu-system-x86_64 -M accel=kvm -nographic -bios ./u-boot.rom
>
>   U-Boot SPL 2024.07 (Jul 04 2024 - 09:26:24 +0000)
>   int_exception_handler() Exception 13 while executing option rom
>   <hangs>
>
> The same rom with `-M accel=tcg` boots OK[1].
>

I filed [2]

> Thanks,
>
> [1] ps. Log of TCG boot:
>
>   builder at x86_64:~/RPM/BUILD/u-boot-qemu-2024.07$ qemu-system-x86_64 -M accel=tcg -nographic -bios ./u-boot.rom
>
>   U-Boot SPL 2024.07 (Jul 04 2024 - 09:26:24 +0000)
>   Video: 1024x768x32
>           alloc_simple() alloc space exhausted
>   Trying to boot from SPI
>   Jumping to 64-bit U-Boot: Note many features are missing
>
>
>   U-Boot 2024.07 (Jul 04 2024 - 09:26:24 +0000)
>
>   CPU:   QEMU Virtual CPU version 2.5+
>   DRAM:  128 MiB
>   Core:  20 devices, 13 uclasses, devicetree: separate
>   Loading Environment from nowhere... OK
>   Video: 1024x768x0
>   Model: QEMU x86 (I440FX)
>   Net:   e1000: 52:54:00:12:34:56
>          eth0: e1000#0
>
>   Hit any key to stop autoboot:  0
>   Scanning for bootflows in all bootdevs
>   Seq  Method       State   Uclass    Part  Name                      Filename
>   ---  -----------  ------  --------  ----  ------------------------  ----------------
>   Scanning global bootmeth 'efi_mgr':
>   efi_set_blk_dev_to_system_partition() No EFI system partition
>   efi_set_blk_dev_to_system_partition() No EFI system partition
>        efi_var_to_file() Failed to persist EFI variables
>   Hunting with: nvme
>   Hunting with: qfw
>   Hunting with: scsi
>   scanning bus for devices...
>   Hunting with: virtio
>   Scanning bootdev 'qfw_pio.bootdev':
>   fatal: no kernel available
>   Hunting with: ide
>   Bus 0: not available  Bus 1: OK
>     Device 2: Model: QEMU Firm: 2.5+ Ser#: QEMU DVD-ROM
>               Type: Removable CD ROM
>               Capacity: not available
>     Device 3: not available
>   Hunting with: usb
>   No USB controllers found
>   Hunting with: ethernet
>   BOOTP broadcast 1
>   BOOTP broadcast 2
>   BOOTP broadcast 3
>   DHCP client bound to address 10.0.2.15 (1001 ms)
>   Scanning bootdev 'e1000#0.bootdev':
>   BOOTP broadcast 1
>   BOOTP broadcast 2
>   BOOTP broadcast 3
>   DHCP client bound to address 10.0.2.15 (1000 ms)
>   *** Warning: no boot file name; using '0A00020F.img'
>   Using e1000#0 device
>   TFTP from server 10.0.2.2; our IP address is 10.0.2.15
>   Filename '0A00020F.img'.
>   Load address: 0x1000000
>   Loading: *
>   TFTP error: 'Access violation' (2)
>   Not retrying...
>   No more bootdevs
>   ---  -----------  ------  --------  ----  ------------------------  ----------------
>   (0 bootflows, 0 valid)
>   =>
>

[2] https://source.denx.de/u-boot/custodians/u-boot-dm/-/issues/31