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 <mach/cpu.h>
  14 #include <mach/at91_dbgu.h>
  15 #include <mach/hardware.h>
  16
  17 #include "soc.h"
  18 #include "generic.h"
  19
  20 /* --------------------------------------------------------------------
  21  *  AT91SAM9RL processor initialization
  22  * -------------------------------------------------------------------- */
  23
  24 static void __init at91sam9rl_map_io(void)
  25 {
  26         unsigned long sram_size;
  27
  28         switch (at91_soc_initdata.cidr & AT91_CIDR_SRAMSIZ) {
  29                 case AT91_CIDR_SRAMSIZ_32K:
  30                         sram_size = 2 * SZ_16K;
  31                         break;
  32                 case AT91_CIDR_SRAMSIZ_16K:
  33                 default:
  34                         sram_size = SZ_16K;
  35         }
  36
  37         /* Map SRAM */
  38         at91_init_sram(0, AT91SAM9RL_SRAM_BASE, sram_size);
  39 }
  40
  41 static void __init at91sam9rl_initialize(void)
  42 {
  43         arm_pm_idle = at91sam9_idle;
  44
  45         at91_sysirq_mask_rtc(AT91SAM9RL_BASE_RTC);
  46         at91_sysirq_mask_rtt(AT91SAM9RL_BASE_RTT);
  47 }
  48
  49 static void __init at91sam9rl_init_time(void)
  50 {
  51         at91sam926x_pit_init(NR_IRQS_LEGACY + AT91_ID_SYS);
  52 }
  53
  54 AT91_SOC_START(at91sam9rl)
  55         .map_io = at91sam9rl_map_io,
  56         .init = at91sam9rl_initialize,
  57         .init_time = at91sam9rl_init_time,
  58 AT91_SOC_END