From: Vineet Gupta <vgupta@synopsys.com>
Date: Mon, 17 Jun 2013 12:57:23 +0000 (+0530)
Subject: ARC: Setup Vector Table Base in early boot
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=05b016ecf5e7a;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

ARC: Setup Vector Table Base in early boot

Otherwise early boot exceptions such as instructions errors due to
configuration mismatch between kernel and hardware go off to la-la land,
as opposed to hitting the handler and panic()'ing properly.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---

diff --git a/arch/arc/kernel/head.S b/arch/arc/kernel/head.S
index 006dec3fc353..2a913f85a747 100644
--- a/arch/arc/kernel/head.S
+++ b/arch/arc/kernel/head.S
@@ -27,6 +27,8 @@ stext:
 	; Don't clobber r0-r4 yet. It might have bootloader provided info
 	;-------------------------------------------------------------------
 
+	sr	@_int_vec_base_lds, [AUX_INTR_VEC_BASE]
+
 #ifdef CONFIG_SMP
 	; Only Boot (Master) proceeds. Others wait in platform dependent way
 	;	IDENTITY Reg [ 3  2  1  0 ]
diff --git a/arch/arc/kernel/irq.c b/arch/arc/kernel/irq.c
index d1ef4129de7d..4918a66a1d8e 100644
--- a/arch/arc/kernel/irq.c
+++ b/arch/arc/kernel/irq.c
@@ -32,8 +32,6 @@ void __cpuinit arc_init_IRQ(void)
 {
 	int level_mask = 0;
 
-	write_aux_reg(AUX_INTR_VEC_BASE, _int_vec_base_lds);
-
 	/* Disable all IRQs: enable them as devices request */
 	write_aux_reg(AUX_IENABLE, 0);