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/irq.h>
11 #include <linux/irqchip.h>
12 #include <linux/irqchip/arm-gic.h>
13
14 #include <asm/mach/arch.h>
15 #include <asm/mach/map.h>
16
17 #include "common.h"
18 #include "r8a7779.h"
19
20 static struct map_desc r8a7779_io_desc[] __initdata = {
21 /* 2M identity mapping for 0xf0000000 (MPCORE) */
22 {
23 .virtual = 0xf0000000,
24 .pfn = __phys_to_pfn(0xf0000000),
25 .length = SZ_2M,
26 .type = MT_DEVICE_NONSHARED
27 },
28 /* 16M identity mapping for 0xfexxxxxx (DMAC-S/HPBREG/INTC2/LRAM/DBSC) */
29 {
30 .virtual = 0xfe000000,
31 .pfn = __phys_to_pfn(0xfe000000),
32 .length = SZ_16M,
33 .type = MT_DEVICE_NONSHARED
34 },
35 };
36
r8a7779_map_io(void)37 static void __init r8a7779_map_io(void)
38 {
39 debug_ll_io_init();
40 iotable_init(r8a7779_io_desc, ARRAY_SIZE(r8a7779_io_desc));
41 }
42
43 /* IRQ */
44 #define INT2SMSKCR0 IOMEM(0xfe7822a0)
45 #define INT2SMSKCR1 IOMEM(0xfe7822a4)
46 #define INT2SMSKCR2 IOMEM(0xfe7822a8)
47 #define INT2SMSKCR3 IOMEM(0xfe7822ac)
48 #define INT2SMSKCR4 IOMEM(0xfe7822b0)
49
50 #define INT2NTSR0 IOMEM(0xfe700060)
51 #define INT2NTSR1 IOMEM(0xfe700064)
52
r8a7779_init_irq_dt(void)53 static void __init r8a7779_init_irq_dt(void)
54 {
55 irqchip_init();
56
57 /* route all interrupts to ARM */
58 __raw_writel(0xffffffff, INT2NTSR0);
59 __raw_writel(0x3fffffff, INT2NTSR1);
60
61 /* unmask all known interrupts in INTCS2 */
62 __raw_writel(0xfffffff0, INT2SMSKCR0);
63 __raw_writel(0xfff7ffff, INT2SMSKCR1);
64 __raw_writel(0xfffbffdf, INT2SMSKCR2);
65 __raw_writel(0xbffffffc, INT2SMSKCR3);
66 __raw_writel(0x003fee3f, INT2SMSKCR4);
67 }
68
69 static const char *const r8a7779_compat_dt[] __initconst = {
70 "renesas,r8a7779",
71 NULL,
72 };
73
74 DT_MACHINE_START(R8A7779_DT, "Generic R8A7779 (Flattened Device Tree)")
75 .smp = smp_ops(r8a7779_smp_ops),
76 .map_io = r8a7779_map_io,
77 .init_early = shmobile_init_delay,
78 .init_irq = r8a7779_init_irq_dt,
79 .init_late = shmobile_init_late,
80 .dt_compat = r8a7779_compat_dt,
81 MACHINE_END
82
