microblaze: Disable stack protection from bootloader

Microblaze without MMU can use stack protection in bootloader and kernel should clear this setting ASAP. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
git-mirror · Jan 27, 2014 · 34b9c07 · 34b9c07
1 parent 17578ea
commit 34b9c07
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S
@@ -64,6 +64,10 @@ real_start:
 #endif
 
 	mts	rmsr, r0
+/* Disable stack protection from bootloader */
+	mts	rslr, r0
+	addi	r8, r0, 0xFFFFFFF
+	mts	rshr, r8
 /*
  * According to Xilinx, msrclr instruction behaves like 'mfs rX,rpc'
  * if the msrclr instruction is not enabled. We use this to detect