kernel/arch/arm/mach-ixp4xx/vulcan-setup.c

   1 /*
   2  * arch/arm/mach-ixp4xx/vulcan-setup.c
   3  *
   4  * Arcom/Eurotech Vulcan board-setup
   5  *
   6  * Copyright (C) 2010 Marc Zyngier <maz@misterjones.org>
   7  *
   8  * based on fsg-setup.c:
   9  *      Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
  10  */
  11
  12 #include <linux/if_ether.h>
  13 #include <linux/irq.h>
  14 #include <linux/serial.h>
  15 #include <linux/serial_8250.h>
  16 #include <linux/io.h>
  17 #include <linux/w1-gpio.h>
  18 #include <linux/mtd/plat-ram.h>
  19 #include <asm/mach-types.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/flash.h>
  22
  23 static struct flash_platform_data vulcan_flash_data = {
  24         .map_name       = "cfi_probe",
  25         .width          = 2,
  26 };
  27
  28 static struct resource vulcan_flash_resource = {
  29         .flags                  = IORESOURCE_MEM,
  30 };
  31
  32 static struct platform_device vulcan_flash = {
  33         .name                   = "IXP4XX-Flash",
  34         .id                     = 0,
  35         .dev = {
  36                 .platform_data  = &vulcan_flash_data,
  37         },
  38         .resource               = &vulcan_flash_resource,
  39         .num_resources          = 1,
  40 };
  41
  42 static struct platdata_mtd_ram vulcan_sram_data = {
  43         .mapname        = "Vulcan SRAM",
  44         .bankwidth      = 1,
  45 };
  46
  47 static struct resource vulcan_sram_resource = {
  48         .flags                  = IORESOURCE_MEM,
  49 };
  50
  51 static struct platform_device vulcan_sram = {
  52         .name                   = "mtd-ram",
  53         .id                     = 0,
  54         .dev = {
  55                 .platform_data  = &vulcan_sram_data,
  56         },
  57         .resource               = &vulcan_sram_resource,
  58         .num_resources          = 1,
  59 };
  60
  61 static struct resource vulcan_uart_resources[] = {
  62         [0] = {
  63                 .start          = IXP4XX_UART1_BASE_PHYS,
  64                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  65                 .flags          = IORESOURCE_MEM,
  66         },
  67         [1] = {
  68                 .start          = IXP4XX_UART2_BASE_PHYS,
  69                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  70                 .flags          = IORESOURCE_MEM,
  71         },
  72         [2] = {
  73                 .flags          = IORESOURCE_MEM,
  74         },
  75 };
  76
  77 static struct plat_serial8250_port vulcan_uart_data[] = {
  78         [0] = {
  79                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  80                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  81                 .irq            = IRQ_IXP4XX_UART1,
  82                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  83                 .iotype         = UPIO_MEM,
  84                 .regshift       = 2,
  85                 .uartclk        = IXP4XX_UART_XTAL,
  86         },
  87         [1] = {
  88                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
  89                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
  90                 .irq            = IRQ_IXP4XX_UART2,
  91                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  92                 .iotype         = UPIO_MEM,
  93                 .regshift       = 2,
  94                 .uartclk        = IXP4XX_UART_XTAL,
  95         },
  96         [2] = {
  97                 .irq            = IXP4XX_GPIO_IRQ(4),
  98                 .irqflags       = IRQF_TRIGGER_LOW,
  99                 .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 100                 .iotype         = UPIO_MEM,
 101                 .uartclk        = 1843200,
 102         },
 103         [3] = {
 104                 .irq            = IXP4XX_GPIO_IRQ(4),
 105                 .irqflags       = IRQF_TRIGGER_LOW,
 106                 .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 107                 .iotype         = UPIO_MEM,
 108                 .uartclk        = 1843200,
 109         },
 110         { }
 111 };
 112
 113 static struct platform_device vulcan_uart = {
 114         .name                   = "serial8250",
 115         .id                     = PLAT8250_DEV_PLATFORM,
 116         .dev = {
 117                 .platform_data  = vulcan_uart_data,
 118         },
 119         .resource               = vulcan_uart_resources,
 120         .num_resources          = ARRAY_SIZE(vulcan_uart_resources),
 121 };
 122
 123 static struct eth_plat_info vulcan_plat_eth[] = {
 124         [0] = {
 125                 .phy            = 0,
 126                 .rxq            = 3,
 127                 .txreadyq       = 20,
 128         },
 129         [1] = {
 130                 .phy            = 1,
 131                 .rxq            = 4,
 132                 .txreadyq       = 21,
 133         },
 134 };
 135
 136 static struct platform_device vulcan_eth[] = {
 137         [0] = {
 138                 .name                   = "ixp4xx_eth",
 139                 .id                     = IXP4XX_ETH_NPEB,
 140                 .dev = {
 141                         .platform_data  = &vulcan_plat_eth[0],
 142                 },
 143         },
 144         [1] = {
 145                 .name                   = "ixp4xx_eth",
 146                 .id                     = IXP4XX_ETH_NPEC,
 147                 .dev = {
 148                         .platform_data  = &vulcan_plat_eth[1],
 149                 },
 150         },
 151 };
 152
 153 static struct resource vulcan_max6369_resource = {
 154         .flags                  = IORESOURCE_MEM,
 155 };
 156
 157 static struct platform_device vulcan_max6369 = {
 158         .name                   = "max6369_wdt",
 159         .id                     = -1,
 160         .resource               = &vulcan_max6369_resource,
 161         .num_resources          = 1,
 162 };
 163
 164 static struct w1_gpio_platform_data vulcan_w1_gpio_pdata = {
 165         .pin                    = 14,
 166         .ext_pullup_enable_pin  = -EINVAL,
 167 };
 168
 169 static struct platform_device vulcan_w1_gpio = {
 170         .name                   = "w1-gpio",
 171         .id                     = 0,
 172         .dev                    = {
 173                 .platform_data  = &vulcan_w1_gpio_pdata,
 174         },
 175 };
 176
 177 static struct platform_device *vulcan_devices[] __initdata = {
 178         &vulcan_uart,
 179         &vulcan_flash,
 180         &vulcan_sram,
 181         &vulcan_max6369,
 182         &vulcan_eth[0],
 183         &vulcan_eth[1],
 184         &vulcan_w1_gpio,
 185 };
 186
 187 static void __init vulcan_init(void)
 188 {
 189         ixp4xx_sys_init();
 190
 191         /* Flash is spread over both CS0 and CS1 */
 192         vulcan_flash_resource.start      = IXP4XX_EXP_BUS_BASE(0);
 193         vulcan_flash_resource.end        = IXP4XX_EXP_BUS_BASE(0) + SZ_32M - 1;
 194         *IXP4XX_EXP_CS0 = IXP4XX_EXP_BUS_CS_EN          |
 195                           IXP4XX_EXP_BUS_STROBE_T(3)    |
 196                           IXP4XX_EXP_BUS_SIZE(0xF)      |
 197                           IXP4XX_EXP_BUS_BYTE_RD16      |
 198                           IXP4XX_EXP_BUS_WR_EN;
 199         *IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
 200
 201         /* SRAM on CS2, (256kB, 8bit, writable) */
 202         vulcan_sram_resource.start      = IXP4XX_EXP_BUS_BASE(2);
 203         vulcan_sram_resource.end        = IXP4XX_EXP_BUS_BASE(2) + SZ_256K - 1;
 204         *IXP4XX_EXP_CS2 = IXP4XX_EXP_BUS_CS_EN          |
 205                           IXP4XX_EXP_BUS_STROBE_T(1)    |
 206                           IXP4XX_EXP_BUS_HOLD_T(2)      |
 207                           IXP4XX_EXP_BUS_SIZE(9)        |
 208                           IXP4XX_EXP_BUS_SPLT_EN        |
 209                           IXP4XX_EXP_BUS_WR_EN          |
 210                           IXP4XX_EXP_BUS_BYTE_EN;
 211
 212         /* XR16L2551 on CS3 (Moto style, 512 bytes, 8bits, writable) */
 213         vulcan_uart_resources[2].start  = IXP4XX_EXP_BUS_BASE(3);
 214         vulcan_uart_resources[2].end    = IXP4XX_EXP_BUS_BASE(3) + 16 - 1;
 215         vulcan_uart_data[2].mapbase     = vulcan_uart_resources[2].start;
 216         vulcan_uart_data[3].mapbase     = vulcan_uart_data[2].mapbase + 8;
 217         *IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN          |
 218                           IXP4XX_EXP_BUS_STROBE_T(3)    |
 219                           IXP4XX_EXP_BUS_CYCLES(IXP4XX_EXP_BUS_CYCLES_MOTOROLA)|
 220                           IXP4XX_EXP_BUS_WR_EN          |
 221                           IXP4XX_EXP_BUS_BYTE_EN;
 222
 223         /* GPIOS on CS4 (512 bytes, 8bits, writable) */
 224         *IXP4XX_EXP_CS4 = IXP4XX_EXP_BUS_CS_EN          |
 225                           IXP4XX_EXP_BUS_WR_EN          |
 226                           IXP4XX_EXP_BUS_BYTE_EN;
 227
 228         /* max6369 on CS5 (512 bytes, 8bits, writable) */
 229         vulcan_max6369_resource.start   = IXP4XX_EXP_BUS_BASE(5);
 230         vulcan_max6369_resource.end     = IXP4XX_EXP_BUS_BASE(5);
 231         *IXP4XX_EXP_CS5 = IXP4XX_EXP_BUS_CS_EN          |
 232                           IXP4XX_EXP_BUS_WR_EN          |
 233                           IXP4XX_EXP_BUS_BYTE_EN;
 234
 235         platform_add_devices(vulcan_devices, ARRAY_SIZE(vulcan_devices));
 236 }
 237
 238 MACHINE_START(ARCOM_VULCAN, "Arcom/Eurotech Vulcan")
 239         /* Maintainer: Marc Zyngier <maz@misterjones.org> */
 240         .map_io         = ixp4xx_map_io,
 241         .init_early     = ixp4xx_init_early,
 242         .init_irq       = ixp4xx_init_irq,
 243         .init_time      = ixp4xx_timer_init,
 244         .atag_offset    = 0x100,
 245         .init_machine   = vulcan_init,
 246 #if defined(CONFIG_PCI)
 247         .dma_zone_size  = SZ_64M,
 248 #endif
 249         .restart        = ixp4xx_restart,
 250 MACHINE_END