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// SPDX-License-Identifier: GPL-2.0
/*
* r8a7779 processor support
*
* Copyright (C) 2011, 2013 Renesas Solutions Corp.
* Copyright (C) 2011 Magnus Damm
* Copyright (C) 2013 Cogent Embedded, Inc.
*/
#include <linux/init.h>
#include <linux/irqchip.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "common.h"
#include "r8a7779.h"
static struct map_desc r8a7779_io_desc[] __initdata = {
/* 2M identity mapping for 0xf0000000 (MPCORE) */
{
.virtual = 0xf0000000,
.pfn = __phys_to_pfn(0xf0000000),
.length = SZ_2M,
.type = MT_DEVICE_NONSHARED
},
/* 16M identity mapping for 0xfexxxxxx (DMAC-S/HPBREG/INTC2/LRAM/DBSC) */
{
.virtual = 0xfe000000,
.pfn = __phys_to_pfn(0xfe000000),
.length = SZ_16M,
.type = MT_DEVICE_NONSHARED
},
};
static void __init r8a7779_map_io(void)
{
debug_ll_io_init();
iotable_init(r8a7779_io_desc, ARRAY_SIZE(r8a7779_io_desc));
}
#define HPBREG_BASE 0xfe700000
/* IRQ */
#define INT2SMSKCR0 0x822a0 /* Interrupt Submask Clear Register 0 */
#define INT2SMSKCR1 0x822a4 /* Interrupt Submask Clear Register 1 */
#define INT2SMSKCR2 0x822a8 /* Interrupt Submask Clear Register 2 */
#define INT2SMSKCR3 0x822ac /* Interrupt Submask Clear Register 3 */
#define INT2SMSKCR4 0x822b0 /* Interrupt Submask Clear Register 4 */
#define INT2NTSR0 0x00060 /* Interrupt Notification Select Register 0 */
#define INT2NTSR1 0x00064 /* Interrupt Notification Select Register 1 */
static void __init r8a7779_init_irq_dt(void)
{
void __iomem *base = ioremap(HPBREG_BASE, 0x00100000);
irqchip_init();
/* route all interrupts to ARM */
__raw_writel(0xffffffff, base + INT2NTSR0);
__raw_writel(0x3fffffff, base + INT2NTSR1);
/* unmask all known interrupts in INTCS2 */
__raw_writel(0xfffffff0, base + INT2SMSKCR0);
__raw_writel(0xfff7ffff, base + INT2SMSKCR1);
__raw_writel(0xfffbffdf, base + INT2SMSKCR2);
__raw_writel(0xbffffffc, base + INT2SMSKCR3);
__raw_writel(0x003fee3f, base + INT2SMSKCR4);
iounmap(base);
}
static const char *const r8a7779_compat_dt[] __initconst = {
"renesas,r8a7779",
NULL,
};
DT_MACHINE_START(R8A7779_DT, "Generic R8A7779 (Flattened Device Tree)")
.smp = smp_ops(r8a7779_smp_ops),
.map_io = r8a7779_map_io,
.init_irq = r8a7779_init_irq_dt,
.init_late = shmobile_init_late,
.dt_compat = r8a7779_compat_dt,
MACHINE_END
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