[PATCH] ARM: 2700/1: Disable IXP2000 IRQs at bootup

Patch from Deepak Saxena

The IXDP2800 bootloader does not disable IRQs before jumping into
the kernel and this is causing the Grand Unified KGDB to crash
the system when we do an early call to trap_init() and irq handlers
have not yet been registered. This patch disables IRQs before we
jump into the kernel.

Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/boot/compressed/head-xscale.S b/arch/arm/boot/compressed/head-xscale.S
index 665bd2c..d3fe253 100644 (file)
--- a/arch/arm/boot/compressed/head-xscale.S
+++ b/arch/arm/boot/compressed/head-xscale.S
@@ -47,3 +47,10 @@ __XScale_start:
                orr     r7, r7, #(MACH_TYPE_GTWX5715 & 0xff00)
 #endif
 
+#ifdef CONFIG_ARCH_IXP2000
+               mov     r1, #-1
+               mov     r0, #0xd6000000
+               str     r1, [r0, #0x14]
+               str     r1, [r0, #0x18]
+#endif
+