On 10/15/2018 10:41 AM, Denis OSTERLAND wrote:
>> The faulting zero page problem doesn't occur on mx25 and mx28 as the HAB
>> ROM doesn't live at 0x0:
>>
>> #define HABV4_RVT_IMX28 0xffff8af8
>>
>> int imx25_hab_get_status(void)
>> {
>>         return imx_habv3_get_status(readl(IOMEM(0x780018d4)));
>> }
>>  
>> Marc
>>
> 
> Thanks for the info.
> This becomes a problem when MMU is enabled again.

I think we have a 1-to-1 mapping by default, modulo the zero page.

> I think this will require explicit mapping.
> I am not sure if it is possible to access the ABI through mapped addresses.

Probably not, I assume the code is not position independent.

> Is it possible to force mapping at exact this addresses?

Marc

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