nommu: Do not override the CP15 control reg value returned from initfunc
The patch removes the "mrc" instruction in head-nommu.S overriding the
r0 register containing the value to be written in the CP15 system
control register.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S
index b16393d..e5dfc28 100644
--- a/arch/arm/kernel/head-nommu.S
+++ b/arch/arm/kernel/head-nommu.S
@@ -61,7 +61,10 @@
*/
__after_proc_init:
#ifdef CONFIG_CPU_CP15
- mrc p15, 0, r0, c1, c0, 0 @ read control reg
+ /*
+ * CP15 system control register value returned in r0 from
+ * the CPU init function.
+ */
#ifdef CONFIG_ALIGNMENT_TRAP
orr r0, r0, #CR_A
#else