Re: [Qemu-devel] Better Cortex-M support?

[Alistair Francis]

On Fri, Nov 14, 2014 at 5:32 PM, Liviu Ionescu <address@hidden> wrote:
>
> On 14 Nov 2014, at 03:01, Alistair Francis <address@hidden> wrote:
>
>> I haven't looked into CMSIS or using SysTick, so I can't confirm that
>> they work. I don't have any experience with using either, so I can't
>> really be of much help with those.
>
> when you'll have some time, perhaps it would be useful to install GNU ARM 
> Eclipse and generate a project for your board, run it on the physical 
> hardware, then test it on QEMU.

Sorry about the long delay. I probably won't be able to do that for
some time, I have other other aspects for the project that are higher
priority. If I get a chance I will though

>
>> I have implementations for the more important system peripherals in
>> the STM32F2xx/4xx SoC families, including GPIO.
>
> did you implement the clock related registers? PLL & others? these are used 
> during CMSIS SystemInit() and are mandatory, otherwise emulation will either 
> fail or not be realistic.

Not specifically. I did implement a timer peripheral, but I assume
that isn't the same. I didn't have any issues with timing and
unrealistic emulation, but I'm not looking for exact time accurate
emulations

Thanks,

Alistair

>
>> You are welcome to use
>> those if you want
>
> thank you!
>
>> above my use case is more aimed at higher level machine/peripherals
>> support
>
> yes, that's great, but without a proper base, like system registers and 
> debug, usability may be not be as good as expected.
>
>
> regards,
>
> Liviu
>
>