arch/arm/mach-ixp4xx/ixdp425-setup.c

   1 /*
   2  * arch/arm/mach-ixp4xx/ixdp425-setup.c
   3  *
   4  * IXDP425/IXCDP1100 board-setup
   5  *
   6  * Copyright (C) 2003-2005 MontaVista Software, Inc.
   7  *
   8  * Author: Deepak Saxena <dsaxena@plexity.net>
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/device.h>
  14 #include <linux/serial.h>
  15 #include <linux/tty.h>
  16 #include <linux/serial_8250.h>
  17 #include <linux/i2c-gpio.h>
  18 #include <linux/io.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/nand.h>
  21 #include <linux/mtd/partitions.h>
  22 #include <linux/delay.h>
  23 #include <linux/gpio.h>
  24 #include <asm/types.h>
  25 #include <asm/setup.h>
  26 #include <asm/memory.h>
  27 #include <mach/hardware.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/irq.h>
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/flash.h>
  32
  33 #define IXDP425_SDA_PIN         7
  34 #define IXDP425_SCL_PIN         6
  35
  36 /* NAND Flash pins */
  37 #define IXDP425_NAND_NCE_PIN    12
  38
  39 #define IXDP425_NAND_CMD_BYTE   0x01
  40 #define IXDP425_NAND_ADDR_BYTE  0x02
  41
  42 static struct flash_platform_data ixdp425_flash_data = {
  43         .map_name       = "cfi_probe",
  44         .width          = 2,
  45 };
  46
  47 static struct resource ixdp425_flash_resource = {
  48         .flags          = IORESOURCE_MEM,
  49 };
  50
  51 static struct platform_device ixdp425_flash = {
  52         .name           = "IXP4XX-Flash",
  53         .id             = 0,
  54         .dev            = {
  55                 .platform_data = &ixdp425_flash_data,
  56         },
  57         .num_resources  = 1,
  58         .resource       = &ixdp425_flash_resource,
  59 };
  60
  61 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
  62     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
  63
  64 static struct mtd_partition ixdp425_partitions[] = {
  65         {
  66                 .name   = "ixp400 NAND FS 0",
  67                 .offset = 0,
  68                 .size   = SZ_8M
  69         }, {
  70                 .name   = "ixp400 NAND FS 1",
  71                 .offset = MTDPART_OFS_APPEND,
  72                 .size   = MTDPART_SIZ_FULL
  73         },
  74 };
  75
  76 static void
  77 ixdp425_flash_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
  78 {
  79         struct nand_chip *this = mtd->priv;
  80         int offset = (int)this->priv;
  81
  82         if (ctrl & NAND_CTRL_CHANGE) {
  83                 if (ctrl & NAND_NCE) {
  84                         gpio_set_value(IXDP425_NAND_NCE_PIN, 0);
  85                         udelay(5);
  86                 } else
  87                         gpio_set_value(IXDP425_NAND_NCE_PIN, 1);
  88
  89                 offset = (ctrl & NAND_CLE) ? IXDP425_NAND_CMD_BYTE : 0;
  90                 offset |= (ctrl & NAND_ALE) ? IXDP425_NAND_ADDR_BYTE : 0;
  91                 this->priv = (void *)offset;
  92         }
  93
  94         if (cmd != NAND_CMD_NONE)
  95                 writeb(cmd, this->IO_ADDR_W + offset);
  96 }
  97
  98 static struct platform_nand_data ixdp425_flash_nand_data = {
  99         .chip = {
 100                 .nr_chips               = 1,
 101                 .chip_delay             = 30,
 102                 .partitions             = ixdp425_partitions,
 103                 .nr_partitions          = ARRAY_SIZE(ixdp425_partitions),
 104         },
 105         .ctrl = {
 106                 .cmd_ctrl               = ixdp425_flash_nand_cmd_ctrl
 107         }
 108 };
 109
 110 static struct resource ixdp425_flash_nand_resource = {
 111         .flags          = IORESOURCE_MEM,
 112 };
 113
 114 static struct platform_device ixdp425_flash_nand = {
 115         .name           = "gen_nand",
 116         .id             = -1,
 117         .dev            = {
 118                 .platform_data = &ixdp425_flash_nand_data,
 119         },
 120         .num_resources  = 1,
 121         .resource       = &ixdp425_flash_nand_resource,
 122 };
 123 #endif  /* CONFIG_MTD_NAND_PLATFORM */
 124
 125 static struct i2c_gpio_platform_data ixdp425_i2c_gpio_data = {
 126         .sda_pin        = IXDP425_SDA_PIN,
 127         .scl_pin        = IXDP425_SCL_PIN,
 128 };
 129
 130 static struct platform_device ixdp425_i2c_gpio = {
 131         .name           = "i2c-gpio",
 132         .id             = 0,
 133         .dev     = {
 134                 .platform_data  = &ixdp425_i2c_gpio_data,
 135         },
 136 };
 137
 138 static struct resource ixdp425_uart_resources[] = {
 139         {
 140                 .start          = IXP4XX_UART1_BASE_PHYS,
 141                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
 142                 .flags          = IORESOURCE_MEM
 143         },
 144         {
 145                 .start          = IXP4XX_UART2_BASE_PHYS,
 146                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
 147                 .flags          = IORESOURCE_MEM
 148         }
 149 };
 150
 151 static struct plat_serial8250_port ixdp425_uart_data[] = {
 152         {
 153                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
 154                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
 155                 .irq            = IRQ_IXP4XX_UART1,
 156                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 157                 .iotype         = UPIO_MEM,
 158                 .regshift       = 2,
 159                 .uartclk        = IXP4XX_UART_XTAL,
 160         },
 161         {
 162                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 163                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 164                 .irq            = IRQ_IXP4XX_UART2,
 165                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 166                 .iotype         = UPIO_MEM,
 167                 .regshift       = 2,
 168                 .uartclk        = IXP4XX_UART_XTAL,
 169         },
 170         { },
 171 };
 172
 173 static struct platform_device ixdp425_uart = {
 174         .name                   = "serial8250",
 175         .id                     = PLAT8250_DEV_PLATFORM,
 176         .dev.platform_data      = ixdp425_uart_data,
 177         .num_resources          = 2,
 178         .resource               = ixdp425_uart_resources
 179 };
 180
 181 /* Built-in 10/100 Ethernet MAC interfaces */
 182 static struct eth_plat_info ixdp425_plat_eth[] = {
 183         {
 184                 .phy            = 0,
 185                 .rxq            = 3,
 186                 .txreadyq       = 20,
 187         }, {
 188                 .phy            = 1,
 189                 .rxq            = 4,
 190                 .txreadyq       = 21,
 191         }
 192 };
 193
 194 static struct platform_device ixdp425_eth[] = {
 195         {
 196                 .name                   = "ixp4xx_eth",
 197                 .id                     = IXP4XX_ETH_NPEB,
 198                 .dev.platform_data      = ixdp425_plat_eth,
 199         }, {
 200                 .name                   = "ixp4xx_eth",
 201                 .id                     = IXP4XX_ETH_NPEC,
 202                 .dev.platform_data      = ixdp425_plat_eth + 1,
 203         }
 204 };
 205
 206 static struct platform_device *ixdp425_devices[] __initdata = {
 207         &ixdp425_i2c_gpio,
 208         &ixdp425_flash,
 209 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
 210     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 211         &ixdp425_flash_nand,
 212 #endif
 213         &ixdp425_uart,
 214         &ixdp425_eth[0],
 215         &ixdp425_eth[1],
 216 };
 217
 218 static void __init ixdp425_init(void)
 219 {
 220         ixp4xx_sys_init();
 221
 222         ixdp425_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 223         ixdp425_flash_resource.end =
 224                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 225
 226 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
 227     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 228         ixdp425_flash_nand_resource.start = IXP4XX_EXP_BUS_BASE(3),
 229         ixdp425_flash_nand_resource.end   = IXP4XX_EXP_BUS_BASE(3) + 0x10 - 1;
 230
 231         gpio_request(IXDP425_NAND_NCE_PIN, "NAND NCE pin");
 232         gpio_direction_output(IXDP425_NAND_NCE_PIN, 0);
 233
 234         /* Configure expansion bus for NAND Flash */
 235         *IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN |
 236                           IXP4XX_EXP_BUS_STROBE_T(1) |  /* extend by 1 clock */
 237                           IXP4XX_EXP_BUS_CYCLES(0) |    /* Intel cycles */
 238                           IXP4XX_EXP_BUS_SIZE(0) |      /* 512bytes addr space*/
 239                           IXP4XX_EXP_BUS_WR_EN |
 240                           IXP4XX_EXP_BUS_BYTE_EN;       /* 8 bit data bus */
 241 #endif
 242
 243         if (cpu_is_ixp43x()) {
 244                 ixdp425_uart.num_resources = 1;
 245                 ixdp425_uart_data[1].flags = 0;
 246         }
 247
 248         platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices));
 249 }
 250
 251 #ifdef CONFIG_ARCH_IXDP425
 252 MACHINE_START(IXDP425, "Intel IXDP425 Development Platform")
 253         /* Maintainer: MontaVista Software, Inc. */
 254         .map_io         = ixp4xx_map_io,
 255         .init_early     = ixp4xx_init_early,
 256         .init_irq       = ixp4xx_init_irq,
 257         .init_time      = ixp4xx_timer_init,
 258         .atag_offset    = 0x100,
 259         .init_machine   = ixdp425_init,
 260 #if defined(CONFIG_PCI)
 261         .dma_zone_size  = SZ_64M,
 262 #endif
 263         .restart        = ixp4xx_restart,
 264 MACHINE_END
 265 #endif
 266
 267 #ifdef CONFIG_MACH_IXDP465
 268 MACHINE_START(IXDP465, "Intel IXDP465 Development Platform")
 269         /* Maintainer: MontaVista Software, Inc. */
 270         .map_io         = ixp4xx_map_io,
 271         .init_early     = ixp4xx_init_early,
 272         .init_irq       = ixp4xx_init_irq,
 273         .init_time      = ixp4xx_timer_init,
 274         .atag_offset    = 0x100,
 275         .init_machine   = ixdp425_init,
 276 #if defined(CONFIG_PCI)
 277         .dma_zone_size  = SZ_64M,
 278 #endif
 279 MACHINE_END
 280 #endif
 281
 282 #ifdef CONFIG_ARCH_PRPMC1100
 283 MACHINE_START(IXCDP1100, "Intel IXCDP1100 Development Platform")
 284         /* Maintainer: MontaVista Software, Inc. */
 285         .map_io         = ixp4xx_map_io,
 286         .init_early     = ixp4xx_init_early,
 287         .init_irq       = ixp4xx_init_irq,
 288         .init_time      = ixp4xx_timer_init,
 289         .atag_offset    = 0x100,
 290         .init_machine   = ixdp425_init,
 291 #if defined(CONFIG_PCI)
 292         .dma_zone_size  = SZ_64M,
 293 #endif
 294 MACHINE_END
 295 #endif
 296
 297 #ifdef CONFIG_MACH_KIXRP435
 298 MACHINE_START(KIXRP435, "Intel KIXRP435 Reference Platform")
 299         /* Maintainer: MontaVista Software, Inc. */
 300         .map_io         = ixp4xx_map_io,
 301         .init_early     = ixp4xx_init_early,
 302         .init_irq       = ixp4xx_init_irq,
 303         .init_time      = ixp4xx_timer_init,
 304         .atag_offset    = 0x100,
 305         .init_machine   = ixdp425_init,
 306 #if defined(CONFIG_PCI)
 307         .dma_zone_size  = SZ_64M,
 308 #endif
 309 MACHINE_END
 310 #endif