arch/arm/mach-at91/setup.c

   1 /*
   2  * Copyright (C) 2007 Atmel Corporation.
   3  * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
   4  *
   5  * Under GPLv2
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/io.h>
  10
  11 #include <asm/mach/map.h>
  12
  13 #include <mach/hardware.h>
  14 #include <mach/cpu.h>
  15
  16 #include "soc.h"
  17 #include "generic.h"
  18
  19 struct at91_soc __initdata at91_boot_soc;
  20
  21 void __init at91_init_irq_default(void)
  22 {
  23         at91_init_interrupts(at91_boot_soc.default_irq_priority);
  24 }
  25
  26 void __init at91_init_interrupts(unsigned int *priority)
  27 {
  28         /* Initialize the AIC interrupt controller */
  29         at91_aic_init(priority);
  30
  31         /* Enable GPIO interrupts */
  32         at91_gpio_irq_setup();
  33 }
  34
  35 static struct map_desc at91_io_desc __initdata = {
  36         .virtual        = AT91_VA_BASE_SYS,
  37         .pfn            = __phys_to_pfn(AT91_BASE_SYS),
  38         .length         = SZ_16K,
  39         .type           = MT_DEVICE,
  40 };
  41
  42 void __init at91_map_io(void)
  43 {
  44         /* Map peripherals */
  45         iotable_init(&at91_io_desc, 1);
  46
  47         if (cpu_is_at91cap9())
  48                 at91_boot_soc = at91cap9_soc;
  49         else if (cpu_is_at91rm9200())
  50                 at91_boot_soc = at91rm9200_soc;
  51         else if (cpu_is_at91sam9260())
  52                 at91_boot_soc = at91sam9260_soc;
  53         else if (cpu_is_at91sam9261())
  54                 at91_boot_soc = at91sam9261_soc;
  55         else if (cpu_is_at91sam9263())
  56                 at91_boot_soc = at91sam9263_soc;
  57         else if (cpu_is_at91sam9g10())
  58                 at91_boot_soc = at91sam9261_soc;
  59         else if (cpu_is_at91sam9g20())
  60                 at91_boot_soc = at91sam9260_soc;
  61         else if (cpu_is_at91sam9g45())
  62                 at91_boot_soc = at91sam9g45_soc;
  63         else if (cpu_is_at91sam9rl())
  64                 at91_boot_soc = at91sam9rl_soc;
  65         else if (cpu_is_at91sam9x5())
  66                 at91_boot_soc = at91sam9x5_soc;
  67         else
  68                 panic("Impossible to detect the SOC type");
  69
  70         if (at91_boot_soc.map_io)
  71                 at91_boot_soc.map_io();
  72 }
  73
  74 void __init at91_initialize(unsigned long main_clock)
  75 {
  76         at91_boot_soc.init(main_clock);
  77 }