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) 2010 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 #include <mach/nanoengine.h>
  30
  31 #include "generic.h"
  32
  33 /* Flash bank 0 */
  34 static struct mtd_partition nanoengine_partitions[] = {
  35         {
  36                 .name   = "nanoEngine boot firmware and parameter table",
  37                 .size           = 0x00010000,  /* 32K */
  38                 .offset         = 0,
  39                 .mask_flags     = MTD_WRITEABLE,
  40         }, {
  41                 .name           = "kernel/initrd reserved",
  42                 .size           = 0x002f0000,
  43                 .offset         = 0x00010000,
  44                 .mask_flags     = MTD_WRITEABLE,
  45         }, {
  46                 .name           = "experimental filesystem allocation",
  47                 .size           = 0x00100000,
  48                 .offset         = 0x00300000,
  49                 .mask_flags     = MTD_WRITEABLE,
  50         }
  51 };
  52
  53 static struct flash_platform_data nanoengine_flash_data = {
  54         .map_name       = "jedec_probe",
  55         .parts          = nanoengine_partitions,
  56         .nr_parts       = ARRAY_SIZE(nanoengine_partitions),
  57 };
  58
  59 static struct resource nanoengine_flash_resources[] = {
  60         {
  61                 .start  = SA1100_CS0_PHYS,
  62                 .end    = SA1100_CS0_PHYS + SZ_32M - 1,
  63                 .flags  = IORESOURCE_MEM,
  64         }, {
  65                 .start  = SA1100_CS1_PHYS,
  66                 .end    = SA1100_CS1_PHYS + SZ_32M - 1,
  67                 .flags  = IORESOURCE_MEM,
  68         }
  69 };
  70
  71 static struct map_desc nanoengine_io_desc[] __initdata = {
  72         {
  73                 /* System Registers */
  74                 .virtual        = 0xf0000000,
  75                 .pfn            = __phys_to_pfn(0x10000000),
  76                 .length         = 0x00100000,
  77                 .type           = MT_DEVICE
  78         }, {
  79                 /* Internal PCI Memory Read/Write */
  80                 .virtual        = NANO_PCI_MEM_RW_VIRT,
  81                 .pfn            = __phys_to_pfn(NANO_PCI_MEM_RW_PHYS),
  82                 .length         = NANO_PCI_MEM_RW_SIZE,
  83                 .type           = MT_DEVICE
  84         }, {
  85                 /* Internal PCI Config Space */
  86                 .virtual        = NANO_PCI_CONFIG_SPACE_VIRT,
  87                 .pfn            = __phys_to_pfn(NANO_PCI_CONFIG_SPACE_PHYS),
  88                 .length         = NANO_PCI_CONFIG_SPACE_SIZE,
  89                 .type           = MT_DEVICE
  90         }
  91 };
  92
  93 static void __init nanoengine_map_io(void)
  94 {
  95         sa1100_map_io();
  96         iotable_init(nanoengine_io_desc, ARRAY_SIZE(nanoengine_io_desc));
  97
  98         sa1100_register_uart(0, 1);
  99         sa1100_register_uart(1, 2);
 100         sa1100_register_uart(2, 3);
 101         Ser1SDCR0 |= SDCR0_UART;
 102         /* disable IRDA -- UART2 is used as a normal serial port */
 103         Ser2UTCR4 = 0;
 104         Ser2HSCR0 = 0;
 105 }
 106
 107 static void __init nanoengine_init(void)
 108 {
 109         sa11x0_register_mtd(&nanoengine_flash_data, nanoengine_flash_resources,
 110                 ARRAY_SIZE(nanoengine_flash_resources));
 111 }
 112
 113 MACHINE_START(NANOENGINE, "BSE nanoEngine")
 114         .atag_offset    = 0x100,
 115         .map_io         = nanoengine_map_io,
 116         .init_irq       = sa1100_init_irq,
 117         .timer          = &sa1100_timer,
 118         .init_machine   = nanoengine_init,
 119 MACHINE_END