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/renesas.h>
19 #include <linux/io.h>
20 #include <linux/irqchip.h>
21 
22 #include <asm/mach/arch.h>
23 
24 #include "common.h"
25 
26 #define MODEMR 0xffcc0020
27 
28 static void __init r8a7778_timer_init(void)
29 {
30 	u32 mode;
31 	void __iomem *modemr = ioremap_nocache(MODEMR, 4);
32 
33 	BUG_ON(!modemr);
34 	mode = ioread32(modemr);
35 	iounmap(modemr);
36 	r8a7778_clocks_init(mode);
37 }
38 
39 #define INT2SMSKCR0	0x82288 /* 0xfe782288 */
40 #define INT2SMSKCR1	0x8228c /* 0xfe78228c */
41 
42 #define INT2NTSR0	0x00018 /* 0xfe700018 */
43 #define INT2NTSR1	0x0002c /* 0xfe70002c */
44 
45 static void __init r8a7778_init_irq_dt(void)
46 {
47 	void __iomem *base = ioremap_nocache(0xfe700000, 0x00100000);
48 
49 	BUG_ON(!base);
50 
51 	irqchip_init();
52 
53 	/* route all interrupts to ARM */
54 	__raw_writel(0x73ffffff, base + INT2NTSR0);
55 	__raw_writel(0xffffffff, base + INT2NTSR1);
56 
57 	/* unmask all known interrupts in INTCS2 */
58 	__raw_writel(0x08330773, base + INT2SMSKCR0);
59 	__raw_writel(0x00311110, base + INT2SMSKCR1);
60 
61 	iounmap(base);
62 }
63 
64 static const char *const r8a7778_compat_dt[] __initconst = {
65 	"renesas,r8a7778",
66 	NULL,
67 };
68 
69 DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)")
70 	.init_early	= shmobile_init_delay,
71 	.init_irq	= r8a7778_init_irq_dt,
72 	.init_late	= shmobile_init_late,
73 	.init_time	= r8a7778_timer_init,
74 	.dt_compat	= r8a7778_compat_dt,
75 MACHINE_END
76