ARM: 8758/1: decompressor: restore r1 and r2 just before jumping to the kernel
The hypervisor setup before __enter_kernel destroys the value
sotred in r1. The value needs to be restored just before the jump.
Fixes: 6b52f7bdb888 ("ARM: hyp-stub: Use r1 for the soft-restart address")
Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 182bf6a..517e0e1 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -561,8 +561,6 @@
bl decompress_kernel
bl cache_clean_flush
bl cache_off
- mov r1, r7 @ restore architecture number
- mov r2, r8 @ restore atags pointer
#ifdef CONFIG_ARM_VIRT_EXT
mrs r0, spsr @ Get saved CPU boot mode
@@ -1365,6 +1363,8 @@
__enter_kernel:
mov r0, #0 @ must be 0
+ mov r1, r7 @ restore architecture number
+ mov r2, r8 @ restore atags pointer
ARM( mov pc, r4 ) @ call kernel
M_CLASS( add r4, r4, #1 ) @ enter in Thumb mode for M class
THUMB( bx r4 ) @ entry point is always ARM for A/R classes