1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * r8a7778 processor support
4  *
5  * Copyright (C) 2013  Renesas Solutions Corp.
6  * Copyright (C) 2013  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7  * Copyright (C) 2013  Cogent Embedded, Inc.
8  */
9 
10 #include <linux/io.h>
11 #include <linux/irqchip.h>
12 
13 #include <asm/mach/arch.h>
14 
15 #include "common.h"
16 
17 #define INT2SMSKCR0	0x82288 /* 0xfe782288 */
18 #define INT2SMSKCR1	0x8228c /* 0xfe78228c */
19 
20 #define INT2NTSR0	0x00018 /* 0xfe700018 */
21 #define INT2NTSR1	0x0002c /* 0xfe70002c */
22 
23 static void __init r8a7778_init_irq_dt(void)
24 {
25 	void __iomem *base = ioremap_nocache(0xfe700000, 0x00100000);
26 
27 	BUG_ON(!base);
28 
29 	irqchip_init();
30 
31 	/* route all interrupts to ARM */
32 	__raw_writel(0x73ffffff, base + INT2NTSR0);
33 	__raw_writel(0xffffffff, base + INT2NTSR1);
34 
35 	/* unmask all known interrupts in INTCS2 */
36 	__raw_writel(0x08330773, base + INT2SMSKCR0);
37 	__raw_writel(0x00311110, base + INT2SMSKCR1);
38 
39 	iounmap(base);
40 }
41 
42 static const char *const r8a7778_compat_dt[] __initconst = {
43 	"renesas,r8a7778",
44 	NULL,
45 };
46 
47 DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)")
48 	.init_early	= shmobile_init_delay,
49 	.init_irq	= r8a7778_init_irq_dt,
50 	.init_late	= shmobile_init_late,
51 	.dt_compat	= r8a7778_compat_dt,
52 MACHINE_END
53