arch/arm/mach-shmobile/setup-r8a7779.c

   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
  18 static 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
  35 static 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
  51 static 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
  67 static const char *const r8a7779_compat_dt[] __initconst = {
  68         "renesas,r8a7779",
  69         NULL,
  70 };
  71
  72 DT_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,
  79 MACHINE_END