release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-u300/u300.c

   1 /*
   2  *
   3  * arch/arm/mach-u300/u300.c
   4  *
   5  *
   6  * Copyright (C) 2006-2009 ST-Ericsson AB
   7  * License terms: GNU General Public License (GPL) version 2
   8  * Platform machine definition.
   9  * Author: Linus Walleij <linus.walleij@stericsson.com>
  10  */
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/mm.h>
  14 #include <linux/sched.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/ioport.h>
  17 #include <linux/memblock.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/io.h>
  20 #include <mach/hardware.h>
  21 #include <mach/platform.h>
  22 #include <mach/memory.h>
  23 #include <asm/mach-types.h>
  24 #include <asm/mach/arch.h>
  25
  26 static void __init u300_reserve(void)
  27 {
  28         /*
  29          * U300 - This platform family can share physical memory
  30          * between two ARM cpus, one running Linux and the other
  31          * running another OS.
  32          */
  33 #ifdef CONFIG_MACH_U300_SINGLE_RAM
  34 #if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) && CONFIG_MACH_U300_2MB_ALIGNMENT_FIX
  35         memblock_reserve(PHYS_OFFSET, 0x00100000);
  36 #endif
  37 #endif
  38 }
  39
  40 static void __init u300_init_machine(void)
  41 {
  42         u300_init_devices();
  43 }
  44
  45 #ifdef CONFIG_MACH_U300_BS2X
  46 #define MACH_U300_STRING "Ericsson AB U300 S25/S26/B25/B26 Prototype Board"
  47 #endif
  48
  49 #ifdef CONFIG_MACH_U300_BS330
  50 #define MACH_U300_STRING "Ericsson AB U330 S330/B330 Prototype Board"
  51 #endif
  52
  53 #ifdef CONFIG_MACH_U300_BS335
  54 #define MACH_U300_STRING "Ericsson AB U335 S335/B335 Prototype Board"
  55 #endif
  56
  57 #ifdef CONFIG_MACH_U300_BS365
  58 #define MACH_U300_STRING "Ericsson AB U365 S365/B365 Prototype Board"
  59 #endif
  60
  61 MACHINE_START(U300, MACH_U300_STRING)
  62         /* Maintainer: Linus Walleij <linus.walleij@stericsson.com> */
  63         .phys_io        = U300_AHB_PER_PHYS_BASE,
  64         .io_pg_offst    = ((U300_AHB_PER_VIRT_BASE) >> 18) & 0xfffc,
  65         .boot_params    = BOOT_PARAMS_OFFSET,
  66         .map_io         = u300_map_io,
  67         .reserve        = u300_reserve,
  68         .init_irq       = u300_init_irq,
  69         .timer          = &u300_timer,
  70         .init_machine   = u300_init_machine,
  71 MACHINE_END