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Re: [Qemu-devel] [PATCH v2 00/11] Aspeed SMC controller fixes and improv

From: Cédric Le Goater
Subject: Re: [Qemu-devel] [PATCH v2 00/11] Aspeed SMC controller fixes and improvements
Date: Mon, 16 Jan 2017 18:08:12 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.6.0

On 01/16/2017 06:00 PM, Peter Maydell wrote:
> On 9 January 2017 at 16:24, Cédric Le Goater <address@hidden> wrote:
>> Hello,
>> I have reduced the patchset size to focus on some improvements of the
>> SMC (Flash) controller model only and will address the watchdog and
>> network models in other patchset.
>> The main benefit of this series is to enable booting directly from a
>> flash image containing U-Boot. It adds :
>>  - some minor fixes and code rearrangements
>>  - Command mode support. Flash contents is accessed directly on the
>>    AHB bus
>>  - auto strapping of configuration for boot flash
>>  - use CE0 as a boot ROM. Today, qemu can not boot from a MMIO region.
>>    As this is complex to do (TCG layer modification), we use a ROM
>>    region in which we copy the flash contents. Hopefully, I got it
>>    right this time.
>>  - dummy bytes support for Command mode only
>> Still in the pipe for the SMC controller are :
>>  - DMA support
>>  - dummy bytes support in user mode (hacky)
>> which I will send later.
> Applied 1-10 to target-arm.next, but not 11 since there
> seemed to be some discussion on whether it was correct.

yes. 11 needs a change in the condition which is used 
to send dummies. After that, I think we should be fine 
for dummy support in Command mode, which we need to boot.

For User mode, this is another story.   



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