tree b5a8d2d08ed38c0436d1ed458a9a5263f39f0c00
parent cf2e09a2acdfc57c2133a61d05a4c9e71994b45c
author Christoffer Dall <c.dall@virtualopensystems.com> 1353210379 -0500
committer Tushar Behera <tushar.behera@linaro.org> 1359982281 +0530

arndale5250: Boot in Hyp mode and enable architected timers

First, to boot in Hyp mode we need to change to non-secure mode, which
involves configuring the frequency of the arch. timers and setting all
interrupts on the gic to group 1 (this code was inspired by the boot
wrapper code).

Second, signal the secondary CPU while still in secure mode and have the
secondary CPU run the SPL.  The SPL checks the hardware cpu id, and if
it's a secondary CPU, it will initialize non-secure mode inside the SPL,
enter Hyp mode, and finally enter a new SMP pen with the same poking stick
interface as the regular kernel uses.

Third, on CPU0 we wait until u-boot is fully up to actually enter the
non-secure mode on CPU0, and stay in non-secure svc mode right up until
we actually load the kernel, where the last thing we do is enter Hyp
mode.

Let it roll...

Signed-off-by: Jeremy C. Andrus <jeremya@cs.columbia.edu>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>