1// SPDX-License-Identifier: GPL-2.0
2/*
3 * r8a7779 processor support
4 *
5 * Copyright (C) 2011, 2013  Renesas Solutions Corp.
6 * Copyright (C) 2011  Magnus Damm
7 * Copyright (C) 2013  Cogent Embedded, Inc.
8 */
9#include <linux/init.h>
10#include <linux/irqchip.h>
11
12#include <asm/mach/arch.h>
13#include <asm/mach/map.h>
14
15#include "common.h"
16#include "r8a7779.h"
17
18static struct map_desc r8a7779_io_desc[] __initdata = {
19	/* 2M identity mapping for 0xf0000000 (MPCORE) */
20	{
21		.virtual	= 0xf0000000,
22		.pfn		= __phys_to_pfn(0xf0000000),
23		.length		= SZ_2M,
24		.type		= MT_DEVICE_NONSHARED
25	},
26	/* 16M identity mapping for 0xfexxxxxx (DMAC-S/HPBREG/INTC2/LRAM/DBSC) */
27	{
28		.virtual	= 0xfe000000,
29		.pfn		= __phys_to_pfn(0xfe000000),
30		.length		= SZ_16M,
31		.type		= MT_DEVICE_NONSHARED
32	},
33};
34
35static void __init r8a7779_map_io(void)
36{
37	debug_ll_io_init();
38	iotable_init(r8a7779_io_desc, ARRAY_SIZE(r8a7779_io_desc));
39}
40
41/* IRQ */
42#define INT2SMSKCR0 IOMEM(0xfe7822a0)
43#define INT2SMSKCR1 IOMEM(0xfe7822a4)
44#define INT2SMSKCR2 IOMEM(0xfe7822a8)
45#define INT2SMSKCR3 IOMEM(0xfe7822ac)
46#define INT2SMSKCR4 IOMEM(0xfe7822b0)
47
48#define INT2NTSR0 IOMEM(0xfe700060)
49#define INT2NTSR1 IOMEM(0xfe700064)
50
51static void __init r8a7779_init_irq_dt(void)
52{
53	irqchip_init();
54
55	/* route all interrupts to ARM */
56	__raw_writel(0xffffffff, INT2NTSR0);
57	__raw_writel(0x3fffffff, INT2NTSR1);
58
59	/* unmask all known interrupts in INTCS2 */
60	__raw_writel(0xfffffff0, INT2SMSKCR0);
61	__raw_writel(0xfff7ffff, INT2SMSKCR1);
62	__raw_writel(0xfffbffdf, INT2SMSKCR2);
63	__raw_writel(0xbffffffc, INT2SMSKCR3);
64	__raw_writel(0x003fee3f, INT2SMSKCR4);
65}
66
67static const char *const r8a7779_compat_dt[] __initconst = {
68	"renesas,r8a7779",
69	NULL,
70};
71
72DT_MACHINE_START(R8A7779_DT, "Generic R8A7779 (Flattened Device Tree)")
73	.smp		= smp_ops(r8a7779_smp_ops),
74	.map_io		= r8a7779_map_io,
75	.init_irq	= r8a7779_init_irq_dt,
76	.init_late	= shmobile_init_late,
77	.dt_compat	= r8a7779_compat_dt,
78MACHINE_END
79