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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * r8a7778 processor support
   4  *
   5  * Copyright (C) 2013  Renesas Solutions Corp.
   6  * Copyright (C) 2013  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   7  * Copyright (C) 2013  Cogent Embedded, Inc.
   8  */
   9
  10 #include <linux/io.h>
  11 #include <linux/irqchip.h>
  12
  13 #include <asm/mach/arch.h>
  14
  15 #include "common.h"
  16
  17 #define HPBREG_BASE     0xfe700000
  18
  19 #define INT2SMSKCR0     0x82288 /* 0xfe782288 */
  20 #define INT2SMSKCR1     0x8228c /* 0xfe78228c */
  21
  22 #define INT2NTSR0       0x00018 /* 0xfe700018 */
  23 #define INT2NTSR1       0x0002c /* 0xfe70002c */
  24
  25 static void __init r8a7778_init_irq_dt(void)
  26 {
  27         void __iomem *base = ioremap(HPBREG_BASE, 0x00100000);
  28
  29         BUG_ON(!base);
  30
  31         irqchip_init();
  32
  33         /* route all interrupts to ARM */
  34         writel(0x73ffffff, base + INT2NTSR0);
  35         writel(0xffffffff, base + INT2NTSR1);
  36
  37         /* unmask all known interrupts in INTCS2 */
  38         writel(0x08330773, base + INT2SMSKCR0);
  39         writel(0x00311110, base + INT2SMSKCR1);
  40
  41         iounmap(base);
  42 }
  43
  44 static const char *const r8a7778_compat_dt[] __initconst = {
  45         "renesas,r8a7778",
  46         NULL
  47 };
  48
  49 DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)")
  50         .init_early     = shmobile_init_delay,
  51         .init_irq       = r8a7778_init_irq_dt,
  52         .init_late      = shmobile_init_late,
  53         .dt_compat      = r8a7778_compat_dt,
  54 MACHINE_END