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