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Re: [Qemu-devel] Regarding Cortex-A7 CPU definition
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] Regarding Cortex-A7 CPU definition |
Date: |
Mon, 8 Feb 2016 15:54:45 +0000 |
> On Mon, Feb 8, 2016 at 2:21 PM, Deepak kumar Raju <address@hidden> wrote:
>> I am Deepak. I have a Cortex-A7 board and I am using qemu code from Linaro.
>> In Qemu-linaro.git, under .../target-arm/cpu.c, I do not see CPU definitions
>> for Cortex-A7.
>> I have few questions:
>>
>> a)Can you please point to Cortex-A7 CPU definitions?
We don't implement a Cortex-A7 in QEMU, because we have no board
models that need it.
>> b) Can we use the CPU definitions of Cortex-A15 for Cortex-A7?
Typically guest code doesn't care about the exact CPU type between
the A15 and the A7. If you wanted to add A7 support then starting
with the A15 would be a good start.
>> c) What would be the diff of Cortex-A7 definitions compared to Cortex-A15?
You need to look at the Technical Reference Manual for the two CPUs
to determine the difference. As far as QEMU is concerned the things
to look at are:
* ID register values
* supported CPU features
* any implementation-specific coprocessor registers
...in other words, all the things we set in the
cortex_a15_initfn().
thanks
-- PMM
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition, Deepak kumar Raju, 2016/02/08
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition,
Peter Maydell <=
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition, Deepak kumar Raju, 2016/02/09
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition, Peter Maydell, 2016/02/09
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition, Deepak kumar Raju, 2016/02/09
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition, Peter Maydell, 2016/02/09
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition, Deepak kumar Raju, 2016/02/10
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition, Peter Maydell, 2016/02/10
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition, Deepak kumar Raju, 2016/02/24
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition, Deepak kumar Raju, 2016/02/26
- Re: [Qemu-devel] Regarding Cortex-A7 CPU definition, Peter Maydell, 2016/02/26