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 #include <asm/page.h>
  23
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/flash.h>
  26 #include <asm/mach/map.h>
  27 #include <asm/mach/serial_sa1100.h>
  28
  29 #include <mach/hardware.h>
  30 #include <mach/nanoengine.h>
  31
  32 #include "generic.h"
  33
  34 /* Flash bank 0 */
  35 static struct mtd_partition nanoengine_partitions[] = {
  36         {
  37                 .name   = "nanoEngine boot firmware and parameter table",
  38                 .size           = 0x00010000,  /* 32K */
  39                 .offset         = 0,
  40                 .mask_flags     = MTD_WRITEABLE,
  41         }, {
  42                 .name           = "kernel/initrd reserved",
  43                 .size           = 0x002f0000,
  44                 .offset         = 0x00010000,
  45                 .mask_flags     = MTD_WRITEABLE,
  46         }, {
  47                 .name           = "experimental filesystem allocation",
  48                 .size           = 0x00100000,
  49                 .offset         = 0x00300000,
  50                 .mask_flags     = MTD_WRITEABLE,
  51         }
  52 };
  53
  54 static struct flash_platform_data nanoengine_flash_data = {
  55         .map_name       = "jedec_probe",
  56         .parts          = nanoengine_partitions,
  57         .nr_parts       = ARRAY_SIZE(nanoengine_partitions),
  58 };
  59
  60 static struct resource nanoengine_flash_resources[] = {
  61         {
  62                 .start  = SA1100_CS0_PHYS,
  63                 .end    = SA1100_CS0_PHYS + SZ_32M - 1,
  64                 .flags  = IORESOURCE_MEM,
  65         }, {
  66                 .start  = SA1100_CS1_PHYS,
  67                 .end    = SA1100_CS1_PHYS + SZ_32M - 1,
  68                 .flags  = IORESOURCE_MEM,
  69         }
  70 };
  71
  72 static struct map_desc nanoengine_io_desc[] __initdata = {
  73         {
  74                 /* System Registers */
  75                 .virtual        = 0xf0000000,
  76                 .pfn            = __phys_to_pfn(0x10000000),
  77                 .length         = 0x00100000,
  78                 .type           = MT_DEVICE
  79         }, {
  80                 /* Internal PCI Memory Read/Write */
  81                 .virtual        = NANO_PCI_MEM_RW_VIRT,
  82                 .pfn            = __phys_to_pfn(NANO_PCI_MEM_RW_PHYS),
  83                 .length         = NANO_PCI_MEM_RW_SIZE,
  84                 .type           = MT_DEVICE
  85         }, {
  86                 /* Internal PCI Config Space */
  87                 .virtual        = NANO_PCI_CONFIG_SPACE_VIRT,
  88                 .pfn            = __phys_to_pfn(NANO_PCI_CONFIG_SPACE_PHYS),
  89                 .length         = NANO_PCI_CONFIG_SPACE_SIZE,
  90                 .type           = MT_DEVICE
  91         }
  92 };
  93
  94 static void __init nanoengine_map_io(void)
  95 {
  96         sa1100_map_io();
  97         iotable_init(nanoengine_io_desc, ARRAY_SIZE(nanoengine_io_desc));
  98
  99         sa1100_register_uart(0, 1);
 100         sa1100_register_uart(1, 2);
 101         sa1100_register_uart(2, 3);
 102         Ser1SDCR0 |= SDCR0_UART;
 103         /* disable IRDA -- UART2 is used as a normal serial port */
 104         Ser2UTCR4 = 0;
 105         Ser2HSCR0 = 0;
 106 }
 107
 108 static void __init nanoengine_init(void)
 109 {
 110         sa11x0_register_mtd(&nanoengine_flash_data, nanoengine_flash_resources,
 111                 ARRAY_SIZE(nanoengine_flash_resources));
 112 }
 113
 114 MACHINE_START(NANOENGINE, "BSE nanoEngine")
 115         .atag_offset    = 0x100,
 116         .map_io         = nanoengine_map_io,
 117         .init_irq       = sa1100_init_irq,
 118         .timer          = &sa1100_timer,
 119         .init_machine   = nanoengine_init,
 120         .restart        = sa11x0_restart,
 121 MACHINE_END