Re: [Qemu-devel] [U-Boot] Support of latest qemux86-64

[Anton Gerasimov]

Adding Igor Mammedov to the loop.

On 11/08/2017 01:59 PM, Anton Gerasimov wrote:
> To whoever might be interested: I've bisected qemu and the breaking
> commit is 208fa0e43645edd0b0d8f838857dfc79daff40a8 (pc: make 'pc.rom'
> readonly when machine has PCI enabled). It's just three lines added,
> I'll paste the whole patch here. Not quite sure what can we do here though.
>
>
>   diff --git a/hw/i386/pc.c b/hw/i386/pc.c
>   index 22e16031b0..59435390ba 100644
>   --- a/hw/i386/pc.c
>   +++ b/hw/i386/pc.c
>   @@ -1443,6 +1443,9 @@ void pc_memory_init(PCMachineState *pcms,
>        option_rom_mr = g_malloc(sizeof(*option_rom_mr));
>        memory_region_init_ram(option_rom_mr, NULL, "pc.rom", PC_ROM_SIZE,
>                               &error_fatal);
>   +    if (pcmc->pci_enabled) {
>   +        memory_region_set_readonly(option_rom_mr, true);
>   +    }
>        memory_region_add_subregion_overlap(rom_memory,
>                                            PC_ROM_MIN_VGA,
>                                            option_rom_mr,
>
>
> Thanks,
> Anton
>
>
> On 11/06/2017 02:55 AM, Bin Meng wrote:
>> +QEMU dev list
>>
>> On Fri, Nov 3, 2017 at 10:07 PM, Anton Gerasimov
>> <address@hidden> wrote:
>>> Hi all,
>>>
>>> I'm trying to use u-boot (v2017.01) with qemu-system-x86_64 v2.10.0 and
>>> run into a "trying to execute code outside of RAM or ROM at xxxxx"
>>> issue. It happens both when I build and use u-boot as a bios and as EFI
>>> payload, just the addresses in the error message are different. On qemu
>>> v2.5.0 at least EFI option works fine.
>>>
>>> I understand that it can be (and probably is) a QEMU issue, but maybe
>>> someone on the list already encountered it and knows a workaround or has
>>> successfully used u-boot with QEMU >=2.10.0 and can share their experience.
>>>
>> Yes, I just tested latest U-Boot x86 ROM image with QEMU 2.9.1 and
>> 2.10.1. The same U-Boot ROM image boots with 2.9.1 but not with
>> 2.10.1.
>>
>> I built U-Boot as follows:
>>
>> $ make qemu-x86_defconfig
>> $ make
>>
>> Does anyone have any hints?
>>
>> Regards,
>> Bin
>

-- 
Anton Gerasimov, ATS Advanced Telematic Systems GmbH
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