Re: [Qemu-devel] [PATCH v1 2/3] arm: fix the armv7m reset state

[Peter Maydell]

On 3 July 2017 at 08:31, KONRAD Frederic <address@hidden> wrote:
> On 06/30/2017 11:06 AM, Peter Maydell wrote:
>> On 30 June 2017 at 09:24, KONRAD Frederic <address@hidden>
>> wrote:
>>> If I choose (b) I won't be able to load it to SRAM and it is
>>> basically the same result I'll need to move or modify the config.
>>
>>
>> I don't understand this, though. Option (b) is probably painful
>> to implement (I don't have a good idea of how to do it) but
>> it ought to mean that the ELF files that work on the board
>> also work for QEMU (regardless of how the board model
>> implemented the aliased flash).
>>
>
> Yes that's exactly what I want.
>
> Basically the 0x00000000 alias can point to the SRAM or the ROM
> during the reset depending on some boot config. The ELF is
> directly loaded in the ROM or in the SRAM and my patch allows to
> fetch the two first words in the reset handler to make it work
> for any boot config.

Yes, but it only works if you implemented it that way
round, and not for board implementations which put the
real device at 0 and the alias at high memory. I'd like a fix
which deals with all of this, not just with the particular
arrangement your board implementation has.

thanks
-- PMM