Messages in this thread | | | Date | Wed, 14 Dec 2016 00:05:47 +0530 | From | Afzal Mohammed <> | Subject | Re: [PATCH RFC 2/2] ARM: nommu: remap exception base address to RAM |
| |
Hi,
On Tue, Dec 13, 2016 at 10:02:26AM +0000, Russell King - ARM Linux wrote: > On Sun, Dec 11, 2016 at 06:42:55PM +0530, Afzal Mohammed wrote:
> > bic r0, r0, #CR_V > > #endif > > mcr p15, 0, r0, c1, c0, 0 @ write control reg > > + > > +#ifdef CONFIG_REMAP_VECTORS_TO_RAM > > + mov r3, #CONFIG_VECTORS_BASE @ read VECTORS_BASE > > + mcr p15, 0, r3, c12, c0, 0 @ write to VBAR > > +#endif > > +
> Is there really any need to do this in head.S ?
Seeing the high vector configuration done here, pounced upon it :)
> I believe it's > entirely possible to do it later - arch/arm/mm/nommu.c:paging_init(). > > Also, if the region setup for the vectors was moved as well, it would > then be possible to check the ID registers to determine whether this > is supported, and make the decision where to locate the vectors base > more dynamically.
i will look into it.
Regards afzal
| |