[U-Boot] U-Boot x86 QEMU: Error on boot

[Tom Rini]

On Mon, Nov 21, 2016 at 03:31:43PM -0600, Eric Neblock wrote:
> Hello,
>   I'm trying to get u-boot working on QEMU so I understand how it works
> before moving to an embedded system.
> 
>   After following the instructions here:
> https://lists.nongnu.org/archive/html/qemu-devel/2015-05/msg04835.html
> 
> U-Boot is always crashing, even when omitting the network stuff. Below
> is how I'm currently trying to boot:
> 
> qemu-system-i386 -nographic -bios u-boot.rom
> 
> And here is the ending result:
> 
> U-Boot 2016.11 (Nov 21 2016 - 14:03:23 -0600)
> 
> CPU: x86, vendor Intel, device 663h
> DRAM:  128 MiB
> Using default environment
> 
> Video: General Protection
> EIP: 0010:[<07f685e4>] EFLAGS: 00000046
> Original EIP :[<fff005e4>]
> EAX: 00000012 EBX: 00000010 ECX: 00000000 EDX: 07d643cf
> ESI: 07fad1dc EDI: 07d643e0 EBP: 07fcf564 ESP: 07d64384
>  DS: 0018 ES: 0018 FS: 0020 GS: 0018 SS: 0018
> CR0: 00000033 CR2: 00000000 CR3: 00000000 CR4: 00000000
> DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
> DR6: ffff0ff0 DR7: 00000400
> Stack:
>     0x07d643c4 : 0x0000001c
>     0x07d643c0 : 0x7acd6388
>     0x07d643bc : 0x00000111
>     0x07d643b8 : 0x000c0000
>     0x07d643b4 : 0x00000000
>     0x07d643b0 : 0x074a7205
>     0x07d643ac : 0x07f87d87
>     0x07d643a8 : 0x7acd6388
>     0x07d643a4 : 0x3b9aca00
>     0x07d643a0 : 0x00000000
>     0x07d6439c : 0x07f8dbe9
>     0x07d64398 : 0x07d67720
>     0x07d64394 : 0x00000002
>     0x07d64390 : 0xc0010001
>     0x07d6438c : 0x00000246
>     0x07d64388 : 0x00000010
> --->0x07d64384 : 0x07f6a997
>     0x07d64380 : 0x00000046
>     0x07d6437c : 0x00000010
>     0x07d64378 : 0x07f685e4
> ### ERROR ### Please RESET the board ###
> 
> 
> I think I'm on the bleeding edge branch, but even then when reverting to
> the v2016.09.01 tag, I still crash.
> 
> If there is any additional information that I can provide please let me
> know.

qemu-x86 is one of our regularly (every push to mainline) tested
targets.  I invoke mine as:
qemu-system-i386 -nographic -cpu qemu32 -bios u-boot.rom \
  -netdev user,id=net0,tftp=/tftpboot -device e1000,netdev=net0

What version of qemu are you running?

-- 
Tom
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