arch/arm/mach-at91/at91sam9rl.c

   1 /*
   2  * arch/arm/mach-at91/at91sam9rl.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2007 Atmel Corporation
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file COPYING in the main directory of this archive for
   9  * more details.
  10  */
  11
  12 #include <asm/system_misc.h>
  13 #include <asm/irq.h>
  14 #include <mach/cpu.h>
  15 #include <mach/at91_dbgu.h>
  16 #include <mach/hardware.h>
  17
  18 #include "soc.h"
  19 #include "generic.h"
  20
  21 /* --------------------------------------------------------------------
  22  *  AT91SAM9RL processor initialization
  23  * -------------------------------------------------------------------- */
  24
  25 static void __init at91sam9rl_map_io(void)
  26 {
  27         unsigned long sram_size;
  28
  29         switch (at91_soc_initdata.cidr & AT91_CIDR_SRAMSIZ) {
  30                 case AT91_CIDR_SRAMSIZ_32K:
  31                         sram_size = 2 * SZ_16K;
  32                         break;
  33                 case AT91_CIDR_SRAMSIZ_16K:
  34                 default:
  35                         sram_size = SZ_16K;
  36         }
  37
  38         /* Map SRAM */
  39         at91_init_sram(0, AT91SAM9RL_SRAM_BASE, sram_size);
  40 }
  41
  42 static void __init at91sam9rl_initialize(void)
  43 {
  44         arm_pm_idle = at91sam9_idle;
  45
  46         at91_sysirq_mask_rtc(AT91SAM9RL_BASE_RTC);
  47         at91_sysirq_mask_rtt(AT91SAM9RL_BASE_RTT);
  48 }
  49
  50 static void __init at91sam9rl_init_time(void)
  51 {
  52         at91sam926x_pit_init(NR_IRQS_LEGACY + AT91_ID_SYS);
  53 }
  54
  55 AT91_SOC_START(at91sam9rl)
  56         .map_io = at91sam9rl_map_io,
  57         .init = at91sam9rl_initialize,
  58         .init_time = at91sam9rl_init_time,
  59 AT91_SOC_END