5113f6f70
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kernel add
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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
*/
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/irqchip/mips-gic.h>
#include <linux/io.h>
#include <asm/irq_cpu.h>
#include <asm/setup.h>
#include <asm/mips-boards/sead3int.h>
#define SEAD_CONFIG_GIC_PRESENT_SHF 1
#define SEAD_CONFIG_GIC_PRESENT_MSK (1 << SEAD_CONFIG_GIC_PRESENT_SHF)
#define SEAD_CONFIG_BASE 0x1b100110
#define SEAD_CONFIG_SIZE 4
static void __iomem *sead3_config_reg;
void __init arch_init_irq(void)
{
if (!cpu_has_veic)
mips_cpu_irq_init();
sead3_config_reg = ioremap_nocache(SEAD_CONFIG_BASE, SEAD_CONFIG_SIZE);
gic_present = (__raw_readl(sead3_config_reg) &
SEAD_CONFIG_GIC_PRESENT_MSK) >>
SEAD_CONFIG_GIC_PRESENT_SHF;
pr_info("GIC: %spresent
", (gic_present) ? "" : "not ");
pr_info("EIC: %s
",
(current_cpu_data.options & MIPS_CPU_VEIC) ? "on" : "off");
if (gic_present)
gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, CPU_INT_GIC,
MIPS_GIC_IRQ_BASE);
}
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