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MIPS: Loongson: Add NMI handler support

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Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J . Hill <Steven.Hill@cavium.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16587/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Huacai Chen 2017-06-22 23:06:50 +08:00 committed by Ralf Baechle
parent 0a00024d7a
commit b392ee0799
1 changed files with 13 additions and 0 deletions
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13
arch/mips/loongson64/common/init.c
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@ -10,13 +10,25 @@
#include <linux/bootmem.h>
#include <asm/bootinfo.h>
#include <asm/traps.h>
#include <asm/smp-ops.h>
#include <asm/cacheflush.h>
#include <loongson.h>
/* Loongson CPU address windows config space base address */
unsigned long __maybe_unused _loongson_addrwincfg_base;
static void __init mips_nmi_setup(void)
{
void *base;
extern char except_vec_nmi;
base = (void *)(CAC_BASE + 0x380);
memcpy(base, &except_vec_nmi, 0x80);
flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
}
void __init prom_init(void)
{
#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
@ -40,6 +52,7 @@ void __init prom_init(void)
/*init the uart base address */
prom_init_uart_base();
register_smp_ops(&loongson3_smp_ops);
board_nmi_handler_setup = mips_nmi_setup;
}
void __init prom_free_prom_memory(void)