arch/arm/mach-shmobile/setup-r8a7778.c

   1 /*
   2  * r8a7778 processor support
   3  *
   4  * Copyright (C) 2013  Renesas Solutions Corp.
   5  * Copyright (C) 2013  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  * Copyright (C) 2013  Cogent Embedded, Inc.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; version 2 of the License.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  */
  17
  18 #include <linux/io.h>
  19 #include <linux/irqchip.h>
  20
  21 #include <asm/mach/arch.h>
  22
  23 #include "common.h"
  24
  25 #define INT2SMSKCR0     0x82288 /* 0xfe782288 */
  26 #define INT2SMSKCR1     0x8228c /* 0xfe78228c */
  27
  28 #define INT2NTSR0       0x00018 /* 0xfe700018 */
  29 #define INT2NTSR1       0x0002c /* 0xfe70002c */
  30
  31 static void __init r8a7778_init_irq_dt(void)
  32 {
  33         void __iomem *base = ioremap_nocache(0xfe700000, 0x00100000);
  34
  35         BUG_ON(!base);
  36
  37         irqchip_init();
  38
  39         /* route all interrupts to ARM */
  40         __raw_writel(0x73ffffff, base + INT2NTSR0);
  41         __raw_writel(0xffffffff, base + INT2NTSR1);
  42
  43         /* unmask all known interrupts in INTCS2 */
  44         __raw_writel(0x08330773, base + INT2SMSKCR0);
  45         __raw_writel(0x00311110, base + INT2SMSKCR1);
  46
  47         iounmap(base);
  48 }
  49
  50 static const char *const r8a7778_compat_dt[] __initconst = {
  51         "renesas,r8a7778",
  52         NULL,
  53 };
  54
  55 DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)")
  56         .init_early     = shmobile_init_delay,
  57         .init_irq       = r8a7778_init_irq_dt,
  58         .init_late      = shmobile_init_late,
  59         .dt_compat      = r8a7778_compat_dt,
  60 MACHINE_END