arch/arm/mach-sa1100/nanoengine.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/nanoengine.c
   3  *
   4  * Bright Star Engineering's nanoEngine board init code.
   5  *
   6  * Copyright (C) 2009 Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  */
  13
  14 #include <linux/init.h>
  15 #include <linux/kernel.h>
  16 #include <linux/mtd/mtd.h>
  17 #include <linux/mtd/partitions.h>
  18 #include <linux/root_dev.h>
  19
  20 #include <asm/mach-types.h>
  21 #include <asm/setup.h>
  22
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/flash.h>
  25 #include <asm/mach/map.h>
  26 #include <asm/mach/serial_sa1100.h>
  27
  28 #include <mach/hardware.h>
  29
  30 #include "generic.h"
  31
  32 /* Flash bank 0 */
  33 static struct mtd_partition nanoengine_partitions[] = {
  34         {
  35                 .name   = "nanoEngine boot firmware and parameter table",
  36                 .size           = 0x00010000,  /* 32K */
  37                 .offset         = 0,
  38                 .mask_flags     = MTD_WRITEABLE,
  39         }, {
  40                 .name           = "kernel/initrd reserved",
  41                 .size           = 0x002f0000,
  42                 .offset         = 0x00010000,
  43                 .mask_flags     = MTD_WRITEABLE,
  44         }, {
  45                 .name           = "experimental filesystem allocation",
  46                 .size           = 0x00100000,
  47                 .offset         = 0x00300000,
  48                 .mask_flags     = MTD_WRITEABLE,
  49         }
  50 };
  51
  52 static struct flash_platform_data nanoengine_flash_data = {
  53         .map_name       = "jedec_probe",
  54         .parts          = nanoengine_partitions,
  55         .nr_parts       = ARRAY_SIZE(nanoengine_partitions),
  56 };
  57
  58 static struct resource nanoengine_flash_resources[] = {
  59         {
  60                 .start  = SA1100_CS0_PHYS,
  61                 .end    = SA1100_CS0_PHYS + SZ_32M - 1,
  62                 .flags  = IORESOURCE_MEM,
  63         }, {
  64                 .start  = SA1100_CS1_PHYS,
  65                 .end    = SA1100_CS1_PHYS + SZ_32M - 1,
  66                 .flags  = IORESOURCE_MEM,
  67         }
  68 };
  69
  70 static struct map_desc nanoengine_io_desc[] __initdata = {
  71         {
  72                 /* System Registers */
  73                 .virtual        = 0xf0000000,
  74                 .pfn            = __phys_to_pfn(0x10000000),
  75                 .length         = 0x00100000,
  76                 .type           = MT_DEVICE
  77         }, {
  78                 /* Internal PCI Config Space */
  79                 .virtual        = 0xf1000000,
  80                 .pfn            = __phys_to_pfn(0x18A00000),
  81                 .length         = 0x00100000,
  82                 .type           = MT_DEVICE
  83         }
  84 };
  85
  86 static void __init nanoengine_map_io(void)
  87 {
  88         sa1100_map_io();
  89         iotable_init(nanoengine_io_desc, ARRAY_SIZE(nanoengine_io_desc));
  90
  91         sa1100_register_uart(0, 1);
  92         sa1100_register_uart(1, 2);
  93         sa1100_register_uart(2, 3);
  94         Ser1SDCR0 |= SDCR0_UART;
  95         /* disable IRDA -- UART2 is used as a normal serial port */
  96         Ser2UTCR4 = 0;
  97         Ser2HSCR0 = 0;
  98 }
  99
 100 static void __init nanoengine_init(void)
 101 {
 102         sa11x0_register_mtd(&nanoengine_flash_data, nanoengine_flash_resources,
 103                 ARRAY_SIZE(nanoengine_flash_resources));
 104 }
 105
 106 MACHINE_START(NANOENGINE, "BSE nanoEngine")
 107         .boot_params    = 0xc0000000,
 108         .map_io         = nanoengine_map_io,
 109         .init_irq       = sa1100_init_irq,
 110         .timer          = &sa1100_timer,
 111         .init_machine   = nanoengine_init,
 112 MACHINE_END