1 // SPDX-License-Identifier: GPL-2.0
3 * r8a7779 processor support
5 * Copyright (C) 2011, 2013 Renesas Solutions Corp.
6 * Copyright (C) 2011 Magnus Damm
7 * Copyright (C) 2013 Cogent Embedded, Inc.
9 #include <linux/init.h>
10 #include <linux/irq.h>
11 #include <linux/irqchip.h>
12 #include <linux/irqchip/arm-gic.h>
14 #include <asm/mach/arch.h>
15 #include <asm/mach/map.h>
20 static struct map_desc r8a7779_io_desc
[] __initdata
= {
21 /* 2M identity mapping for 0xf0000000 (MPCORE) */
23 .virtual = 0xf0000000,
24 .pfn
= __phys_to_pfn(0xf0000000),
26 .type
= MT_DEVICE_NONSHARED
28 /* 16M identity mapping for 0xfexxxxxx (DMAC-S/HPBREG/INTC2/LRAM/DBSC) */
30 .virtual = 0xfe000000,
31 .pfn
= __phys_to_pfn(0xfe000000),
33 .type
= MT_DEVICE_NONSHARED
37 static void __init
r8a7779_map_io(void)
40 iotable_init(r8a7779_io_desc
, ARRAY_SIZE(r8a7779_io_desc
));
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)
50 #define INT2NTSR0 IOMEM(0xfe700060)
51 #define INT2NTSR1 IOMEM(0xfe700064)
53 static void __init
r8a7779_init_irq_dt(void)
57 /* route all interrupts to ARM */
58 __raw_writel(0xffffffff, INT2NTSR0
);
59 __raw_writel(0x3fffffff, INT2NTSR1
);
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
);
69 static const char *const r8a7779_compat_dt
[] __initconst
= {
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
,