1/*
2 * r8a7778 processor support
3 *
4 * Copyright (C) 2013  Renesas Solutions Corp.
5 * Copyright (C) 2013  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 * Copyright (C) 2013  Cogent Embedded, Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2 of the License.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 */
17
18#include <linux/clk/shmobile.h>
19#include <linux/io.h>
20#include <linux/irqchip.h>
21
22#include <asm/mach/arch.h>
23
24#include "common.h"
25#include "irqs.h"
26
27#define MODEMR 0xffcc0020
28
29static void __init r8a7778_timer_init(void)
30{
31	u32 mode;
32	void __iomem *modemr = ioremap_nocache(MODEMR, 4);
33
34	BUG_ON(!modemr);
35	mode = ioread32(modemr);
36	iounmap(modemr);
37	r8a7778_clocks_init(mode);
38}
39
40#define INT2SMSKCR0	0x82288 /* 0xfe782288 */
41#define INT2SMSKCR1	0x8228c /* 0xfe78228c */
42
43#define INT2NTSR0	0x00018 /* 0xfe700018 */
44#define INT2NTSR1	0x0002c /* 0xfe70002c */
45
46static void __init r8a7778_init_irq_dt(void)
47{
48	void __iomem *base = ioremap_nocache(0xfe700000, 0x00100000);
49
50	BUG_ON(!base);
51
52	irqchip_init();
53
54	/* route all interrupts to ARM */
55	__raw_writel(0x73ffffff, base + INT2NTSR0);
56	__raw_writel(0xffffffff, base + INT2NTSR1);
57
58	/* unmask all known interrupts in INTCS2 */
59	__raw_writel(0x08330773, base + INT2SMSKCR0);
60	__raw_writel(0x00311110, base + INT2SMSKCR1);
61
62	iounmap(base);
63}
64
65static const char *const r8a7778_compat_dt[] __initconst = {
66	"renesas,r8a7778",
67	NULL,
68};
69
70DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)")
71	.init_early	= shmobile_init_delay,
72	.init_irq	= r8a7778_init_irq_dt,
73	.init_late	= shmobile_init_late,
74	.init_time	= r8a7778_timer_init,
75	.dt_compat	= r8a7778_compat_dt,
76MACHINE_END
77