From: Vineet Gupta Date: Mon, 17 Jun 2013 12:57:23 +0000 (+0530) Subject: ARC: Setup Vector Table Base in early boot X-Git-Tag: firefly_0821_release~6453^2~525 X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=8a229aeadcf9cf6616e56b00babc86607a3b3d1d;p=firefly-linux-kernel-4.4.55.git ARC: Setup Vector Table Base in early boot commit 05b016ecf5e7a8c24409d8e9effb5d2ec9107708 upstream. 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 Cc: Guenter Roeck Signed-off-by: Greg Kroah-Hartman --- 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 8115fa531575..e7fd6d2abce7 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);