[ARM] 3024/1: Add cpu_v6_proc_fin

Patch from Tony Lindgren

Machine restart calls cpu_proc_fin() to clean and disable
cache, and turn off interrupts. This patch adds proper
cpu_v6_proc_fin.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 8 insertions, 1 deletions

diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
index caf3b19b167f..9bb5fff406fb 100644
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -55,7 +55,14 @@ ENTRY(cpu_v6_proc_init)
         mov     pc, lr
 
 ENTRY(cpu_v6_proc_fin)
-        mov     pc, lr
+        stmfd   sp!, {lr}
+        cpsid   if                              @ disable interrupts
+        bl      v6_flush_kern_cache_all
+        mrc     p15, 0, r0, c1, c0, 0           @ ctrl register
+        bic     r0, r0, #0x1000                 @ ...i............
+        bic     r0, r0, #0x0006                 @ .............ca.
+        mcr     p15, 0, r0, c1, c0, 0           @ disable caches
+        ldmfd   sp!, {pc}
 
 /*
  *      cpu_v6_reset(loc)