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ARC: Setup Vector Table Base in early boot

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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>
This commit is contained in:
Vineet Gupta 2013-06-17 18:27:23 +05:30
parent 38a9ff6d24
commit 05b016ecf5
2 changed files with 2 additions and 2 deletions
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2
arch/arc/kernel/head.S
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@ -27,6 +27,8 @@ stext:
; Don't clobber r0-r4 yet. It might have bootloader provided info ; Don't clobber r0-r4 yet. It might have bootloader provided info
;------------------------------------------------------------------- ;-------------------------------------------------------------------
sr @_int_vec_base_lds, [AUX_INTR_VEC_BASE]
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
; Only Boot (Master) proceeds. Others wait in platform dependent way ; Only Boot (Master) proceeds. Others wait in platform dependent way
; IDENTITY Reg [ 3 2 1 0 ] ; IDENTITY Reg [ 3 2 1 0 ]

2
arch/arc/kernel/irq.c
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@ -32,8 +32,6 @@ void __cpuinit arc_init_IRQ(void)
{ {
int level_mask = 0; int level_mask = 0;
write_aux_reg(AUX_INTR_VEC_BASE, _int_vec_base_lds);
/* Disable all IRQs: enable them as devices request */ /* Disable all IRQs: enable them as devices request */
write_aux_reg(AUX_IENABLE, 0); write_aux_reg(AUX_IENABLE, 0);