[PATCH v6 5/5] arm: exynos: Add MCPM call-back functions

[Nicolas Pitre]

On Wed, 14 May 2014, Chander Kashyap wrote:
> On 14 May 2014 08:32, Nicolas Pitre <nicolas.pitre at linaro.org> wrote:
> > On Wed, 14 May 2014, Chander Kashyap wrote:
> >> On 14 May 2014 08:14, Abhilash Kesavan <kesavan.abhilash at gmail.com> wrote:
> >> > On Tue, May 13, 2014 at 10:18 PM, Lorenzo Pieralisi
> >> > <lorenzo.pieralisi at arm.com> wrote:
> >> >> On Tue, May 13, 2014 at 12:58:44PM +0100, Abhilash Kesavan wrote:
> >> >>
> >> >>> +       /*
> >> >>> +        * Future entries into the kernel can now go
> >> >>> +        * through the cluster entry vectors.
> >> >>> +        */
> >> >>> +       __raw_writel(virt_to_phys(mcpm_entry_point),
> >> >>> +                       ns_sram_base_addr + MCPM_BOOT_ADDR_OFFSET);
> >> >>> +
> >> >>
> >> >> ns_sram_base_addr must be unmapped, since it is unused after the write.
> >> > Will unmap.
> >>
> >> This mapping is required in for cpuilde (suspend) to program
> >> mcpm_entry before going to suspend.
> >
> > Why?
> 
> This is required to program the mcpm_entry point address (resume
> address) after cpuidle exit/fail.

You should be using mcpm_set_entry_vector() for that.  Once 
mcpm_entry_point is set, it shouldn't need to be changed.


Nicolas