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
r8a7778_timer_init(void)29 static 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
r8a7778_init_irq_dt(void)46 static 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
65 static const char *const r8a7778_compat_dt[] __initconst = {
66 "renesas,r8a7778",
67 NULL,
68 };
69
70 DT_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,
76 MACHINE_END
77