kernel/arch/arm/mach-sa1100/cerf.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/cerf.c
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * Apr-2003 : Removed some old PDA crud [FB]
   9  * Oct-2003 : Added uart2 resource [FB]
  10  * Jan-2004 : Removed io map for flash [FB]
  11  */
  12
  13 #include <linux/init.h>
  14 #include <linux/kernel.h>
  15 #include <linux/tty.h>
  16 #include <linux/platform_data/sa11x0-serial.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/irq.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/partitions.h>
  21 #include <linux/gpio.h>
  22 #include <linux/leds.h>
  23
  24 #include <mach/hardware.h>
  25 #include <asm/setup.h>
  26
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/flash.h>
  30 #include <asm/mach/map.h>
  31
  32 #include <mach/cerf.h>
  33 #include <linux/platform_data/mfd-mcp-sa11x0.h>
  34 #include <mach/irqs.h>
  35 #include "generic.h"
  36
  37 static struct resource cerfuart2_resources[] = {
  38         [0] = DEFINE_RES_MEM(0x80030000, SZ_64K),
  39 };
  40
  41 static struct platform_device cerfuart2_device = {
  42         .name           = "sa11x0-uart",
  43         .id             = 2,
  44         .num_resources  = ARRAY_SIZE(cerfuart2_resources),
  45         .resource       = cerfuart2_resources,
  46 };
  47
  48 /* LEDs */
  49 struct gpio_led cerf_gpio_leds[] = {
  50         {
  51                 .name                   = "cerf:d0",
  52                 .default_trigger        = "heartbeat",
  53                 .gpio                   = 0,
  54         },
  55         {
  56                 .name                   = "cerf:d1",
  57                 .default_trigger        = "cpu0",
  58                 .gpio                   = 1,
  59         },
  60         {
  61                 .name                   = "cerf:d2",
  62                 .default_trigger        = "default-on",
  63                 .gpio                   = 2,
  64         },
  65         {
  66                 .name                   = "cerf:d3",
  67                 .default_trigger        = "default-on",
  68                 .gpio                   = 3,
  69         },
  70
  71 };
  72
  73 static struct gpio_led_platform_data cerf_gpio_led_info = {
  74         .leds           = cerf_gpio_leds,
  75         .num_leds       = ARRAY_SIZE(cerf_gpio_leds),
  76 };
  77
  78 static struct platform_device cerf_leds = {
  79         .name   = "leds-gpio",
  80         .id     = -1,
  81         .dev    = {
  82                 .platform_data  = &cerf_gpio_led_info,
  83         }
  84 };
  85
  86
  87 static struct platform_device *cerf_devices[] __initdata = {
  88         &cerfuart2_device,
  89         &cerf_leds,
  90 };
  91
  92 #ifdef CONFIG_SA1100_CERF_FLASH_32MB
  93 #  define CERF_FLASH_SIZE       0x02000000
  94 #elif defined CONFIG_SA1100_CERF_FLASH_16MB
  95 #  define CERF_FLASH_SIZE       0x01000000
  96 #elif defined CONFIG_SA1100_CERF_FLASH_8MB
  97 #  define CERF_FLASH_SIZE       0x00800000
  98 #else
  99 #  error "Undefined flash size for CERF"
 100 #endif
 101
 102 static struct mtd_partition cerf_partitions[] = {
 103         {
 104                 .name           = "Bootloader",
 105                 .size           = 0x00020000,
 106                 .offset         = 0x00000000,
 107         }, {
 108                 .name           = "Params",
 109                 .size           = 0x00040000,
 110                 .offset         = 0x00020000,
 111         }, {
 112                 .name           = "Kernel",
 113                 .size           = 0x00100000,
 114                 .offset         = 0x00060000,
 115         }, {
 116                 .name           = "Filesystem",
 117                 .size           = CERF_FLASH_SIZE-0x00160000,
 118                 .offset         = 0x00160000,
 119         }
 120 };
 121
 122 static struct flash_platform_data cerf_flash_data = {
 123         .map_name       = "cfi_probe",
 124         .parts          = cerf_partitions,
 125         .nr_parts       = ARRAY_SIZE(cerf_partitions),
 126 };
 127
 128 static struct resource cerf_flash_resource =
 129         DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
 130
 131 static void __init cerf_init_irq(void)
 132 {
 133         sa1100_init_irq();
 134         irq_set_irq_type(CERF_ETH_IRQ, IRQ_TYPE_EDGE_RISING);
 135 }
 136
 137 static struct map_desc cerf_io_desc[] __initdata = {
 138         {       /* Crystal Ethernet Chip */
 139                 .virtual        =  0xf0000000,
 140                 .pfn            = __phys_to_pfn(0x08000000),
 141                 .length         = 0x00100000,
 142                 .type           = MT_DEVICE
 143         }
 144 };
 145
 146 static void __init cerf_map_io(void)
 147 {
 148         sa1100_map_io();
 149         iotable_init(cerf_io_desc, ARRAY_SIZE(cerf_io_desc));
 150
 151         sa1100_register_uart(0, 3);
 152         sa1100_register_uart(1, 2); /* disable this and the uart2 device for sa1100_fir */
 153         sa1100_register_uart(2, 1);
 154
 155         /* set some GPDR bits here while it's safe */
 156         GPDR |= CERF_GPIO_CF_RESET;
 157 }
 158
 159 static struct mcp_plat_data cerf_mcp_data = {
 160         .mccr0          = MCCR0_ADM,
 161         .sclk_rate      = 11981000,
 162 };
 163
 164 static void __init cerf_init(void)
 165 {
 166         sa11x0_ppc_configure_mcp();
 167         platform_add_devices(cerf_devices, ARRAY_SIZE(cerf_devices));
 168         sa11x0_register_mtd(&cerf_flash_data, &cerf_flash_resource, 1);
 169         sa11x0_register_mcp(&cerf_mcp_data);
 170 }
 171
 172 MACHINE_START(CERF, "Intrinsyc CerfBoard/CerfCube")
 173         /* Maintainer: support@intrinsyc.com */
 174         .map_io         = cerf_map_io,
 175         .nr_irqs        = SA1100_NR_IRQS,
 176         .init_irq       = cerf_init_irq,
 177         .init_time      = sa1100_timer_init,
 178         .init_machine   = cerf_init,
 179         .init_late      = sa11x0_init_late,
 180         .restart        = sa11x0_restart,
 181 MACHINE_END