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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * arch/arm/mach-ixp4xx/vulcan-setup.c
   4  *
   5  * Arcom/Eurotech Vulcan board-setup
   6  *
   7  * Copyright (C) 2010 Marc Zyngier <maz@misterjones.org>
   8  *
   9  * based on fsg-setup.c:
  10  *      Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
  11  */
  12
  13 #include <linux/if_ether.h>
  14 #include <linux/irq.h>
  15 #include <linux/serial.h>
  16 #include <linux/serial_8250.h>
  17 #include <linux/io.h>
  18 #include <linux/w1-gpio.h>
  19 #include <linux/mtd/plat-ram.h>
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach/flash.h>
  23
  24 static struct flash_platform_data vulcan_flash_data = {
  25         .map_name       = "cfi_probe",
  26         .width          = 2,
  27 };
  28
  29 static struct resource vulcan_flash_resource = {
  30         .flags                  = IORESOURCE_MEM,
  31 };
  32
  33 static struct platform_device vulcan_flash = {
  34         .name                   = "IXP4XX-Flash",
  35         .id                     = 0,
  36         .dev = {
  37                 .platform_data  = &vulcan_flash_data,
  38         },
  39         .resource               = &vulcan_flash_resource,
  40         .num_resources          = 1,
  41 };
  42
  43 static struct platdata_mtd_ram vulcan_sram_data = {
  44         .mapname        = "Vulcan SRAM",
  45         .bankwidth      = 1,
  46 };
  47
  48 static struct resource vulcan_sram_resource = {
  49         .flags                  = IORESOURCE_MEM,
  50 };
  51
  52 static struct platform_device vulcan_sram = {
  53         .name                   = "mtd-ram",
  54         .id                     = 0,
  55         .dev = {
  56                 .platform_data  = &vulcan_sram_data,
  57         },
  58         .resource               = &vulcan_sram_resource,
  59         .num_resources          = 1,
  60 };
  61
  62 static struct resource vulcan_uart_resources[] = {
  63         [0] = {
  64                 .start          = IXP4XX_UART1_BASE_PHYS,
  65                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  66                 .flags          = IORESOURCE_MEM,
  67         },
  68         [1] = {
  69                 .start          = IXP4XX_UART2_BASE_PHYS,
  70                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  71                 .flags          = IORESOURCE_MEM,
  72         },
  73         [2] = {
  74                 .flags          = IORESOURCE_MEM,
  75         },
  76 };
  77
  78 static struct plat_serial8250_port vulcan_uart_data[] = {
  79         [0] = {
  80                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  81                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  82                 .irq            = IRQ_IXP4XX_UART1,
  83                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  84                 .iotype         = UPIO_MEM,
  85                 .regshift       = 2,
  86                 .uartclk        = IXP4XX_UART_XTAL,
  87         },
  88         [1] = {
  89                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
  90                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
  91                 .irq            = IRQ_IXP4XX_UART2,
  92                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  93                 .iotype         = UPIO_MEM,
  94                 .regshift       = 2,
  95                 .uartclk        = IXP4XX_UART_XTAL,
  96         },
  97         [2] = {
  98                 .irq            = IXP4XX_GPIO_IRQ(4),
  99                 .irqflags       = IRQF_TRIGGER_LOW,
 100                 .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 101                 .iotype         = UPIO_MEM,
 102                 .uartclk        = 1843200,
 103         },
 104         [3] = {
 105                 .irq            = IXP4XX_GPIO_IRQ(4),
 106                 .irqflags       = IRQF_TRIGGER_LOW,
 107                 .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 108                 .iotype         = UPIO_MEM,
 109                 .uartclk        = 1843200,
 110         },
 111         { }
 112 };
 113
 114 static struct platform_device vulcan_uart = {
 115         .name                   = "serial8250",
 116         .id                     = PLAT8250_DEV_PLATFORM,
 117         .dev = {
 118                 .platform_data  = vulcan_uart_data,
 119         },
 120         .resource               = vulcan_uart_resources,
 121         .num_resources          = ARRAY_SIZE(vulcan_uart_resources),
 122 };
 123
 124 static struct eth_plat_info vulcan_plat_eth[] = {
 125         [0] = {
 126                 .phy            = 0,
 127                 .rxq            = 3,
 128                 .txreadyq       = 20,
 129         },
 130         [1] = {
 131                 .phy            = 1,
 132                 .rxq            = 4,
 133                 .txreadyq       = 21,
 134         },
 135 };
 136
 137 static struct platform_device vulcan_eth[] = {
 138         [0] = {
 139                 .name                   = "ixp4xx_eth",
 140                 .id                     = IXP4XX_ETH_NPEB,
 141                 .dev = {
 142                         .platform_data  = &vulcan_plat_eth[0],
 143                 },
 144         },
 145         [1] = {
 146                 .name                   = "ixp4xx_eth",
 147                 .id                     = IXP4XX_ETH_NPEC,
 148                 .dev = {
 149                         .platform_data  = &vulcan_plat_eth[1],
 150                 },
 151         },
 152 };
 153
 154 static struct resource vulcan_max6369_resource = {
 155         .flags                  = IORESOURCE_MEM,
 156 };
 157
 158 static struct platform_device vulcan_max6369 = {
 159         .name                   = "max6369_wdt",
 160         .id                     = -1,
 161         .resource               = &vulcan_max6369_resource,
 162         .num_resources          = 1,
 163 };
 164
 165 static struct w1_gpio_platform_data vulcan_w1_gpio_pdata = {
 166         .pin                    = 14,
 167         .ext_pullup_enable_pin  = -EINVAL,
 168 };
 169
 170 static struct platform_device vulcan_w1_gpio = {
 171         .name                   = "w1-gpio",
 172         .id                     = 0,
 173         .dev                    = {
 174                 .platform_data  = &vulcan_w1_gpio_pdata,
 175         },
 176 };
 177
 178 static struct platform_device *vulcan_devices[] __initdata = {
 179         &vulcan_uart,
 180         &vulcan_flash,
 181         &vulcan_sram,
 182         &vulcan_max6369,
 183         &vulcan_eth[0],
 184         &vulcan_eth[1],
 185         &vulcan_w1_gpio,
 186 };
 187
 188 static void __init vulcan_init(void)
 189 {
 190         ixp4xx_sys_init();
 191
 192         /* Flash is spread over both CS0 and CS1 */
 193         vulcan_flash_resource.start      = IXP4XX_EXP_BUS_BASE(0);
 194         vulcan_flash_resource.end        = IXP4XX_EXP_BUS_BASE(0) + SZ_32M - 1;
 195         *IXP4XX_EXP_CS0 = IXP4XX_EXP_BUS_CS_EN          |
 196                           IXP4XX_EXP_BUS_STROBE_T(3)    |
 197                           IXP4XX_EXP_BUS_SIZE(0xF)      |
 198                           IXP4XX_EXP_BUS_BYTE_RD16      |
 199                           IXP4XX_EXP_BUS_WR_EN;
 200         *IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
 201
 202         /* SRAM on CS2, (256kB, 8bit, writable) */
 203         vulcan_sram_resource.start      = IXP4XX_EXP_BUS_BASE(2);
 204         vulcan_sram_resource.end        = IXP4XX_EXP_BUS_BASE(2) + SZ_256K - 1;
 205         *IXP4XX_EXP_CS2 = IXP4XX_EXP_BUS_CS_EN          |
 206                           IXP4XX_EXP_BUS_STROBE_T(1)    |
 207                           IXP4XX_EXP_BUS_HOLD_T(2)      |
 208                           IXP4XX_EXP_BUS_SIZE(9)        |
 209                           IXP4XX_EXP_BUS_SPLT_EN        |
 210                           IXP4XX_EXP_BUS_WR_EN          |
 211                           IXP4XX_EXP_BUS_BYTE_EN;
 212
 213         /* XR16L2551 on CS3 (Moto style, 512 bytes, 8bits, writable) */
 214         vulcan_uart_resources[2].start  = IXP4XX_EXP_BUS_BASE(3);
 215         vulcan_uart_resources[2].end    = IXP4XX_EXP_BUS_BASE(3) + 16 - 1;
 216         vulcan_uart_data[2].mapbase     = vulcan_uart_resources[2].start;
 217         vulcan_uart_data[3].mapbase     = vulcan_uart_data[2].mapbase + 8;
 218         *IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN          |
 219                           IXP4XX_EXP_BUS_STROBE_T(3)    |
 220                           IXP4XX_EXP_BUS_CYCLES(IXP4XX_EXP_BUS_CYCLES_MOTOROLA)|
 221                           IXP4XX_EXP_BUS_WR_EN          |
 222                           IXP4XX_EXP_BUS_BYTE_EN;
 223
 224         /* GPIOS on CS4 (512 bytes, 8bits, writable) */
 225         *IXP4XX_EXP_CS4 = IXP4XX_EXP_BUS_CS_EN          |
 226                           IXP4XX_EXP_BUS_WR_EN          |
 227                           IXP4XX_EXP_BUS_BYTE_EN;
 228
 229         /* max6369 on CS5 (512 bytes, 8bits, writable) */
 230         vulcan_max6369_resource.start   = IXP4XX_EXP_BUS_BASE(5);
 231         vulcan_max6369_resource.end     = IXP4XX_EXP_BUS_BASE(5);
 232         *IXP4XX_EXP_CS5 = IXP4XX_EXP_BUS_CS_EN          |
 233                           IXP4XX_EXP_BUS_WR_EN          |
 234                           IXP4XX_EXP_BUS_BYTE_EN;
 235
 236         platform_add_devices(vulcan_devices, ARRAY_SIZE(vulcan_devices));
 237 }
 238
 239 MACHINE_START(ARCOM_VULCAN, "Arcom/Eurotech Vulcan")
 240         /* Maintainer: Marc Zyngier <maz@misterjones.org> */
 241         .map_io         = ixp4xx_map_io,
 242         .init_early     = ixp4xx_init_early,
 243         .init_irq       = ixp4xx_init_irq,
 244         .init_time      = ixp4xx_timer_init,
 245         .atag_offset    = 0x100,
 246         .init_machine   = vulcan_init,
 247 #if defined(CONFIG_PCI)
 248         .dma_zone_size  = SZ_64M,
 249 #endif
 250         .restart        = ixp4xx_restart,
 251 MACHINE_END