1/* 2 * arch/arm/mach-ixp4xx/gtwx5715-setup.c 3 * 4 * Gemtek GTWX5715 (Linksys WRV54G) board setup 5 * 6 * Copyright (C) 2004 George T. Joseph 7 * Derived from Coyote 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * as published by the Free Software Foundation; either version 2 12 * of the License, or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 22 * 23 */ 24 25#include <linux/init.h> 26#include <linux/device.h> 27#include <linux/serial.h> 28#include <linux/tty.h> 29#include <linux/serial_8250.h> 30#include <asm/types.h> 31#include <asm/setup.h> 32#include <asm/memory.h> 33#include <mach/hardware.h> 34#include <asm/irq.h> 35#include <asm/mach-types.h> 36#include <asm/mach/arch.h> 37#include <asm/mach/flash.h> 38 39/* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch 40 and operate as an SPI type interface. The details of the interface 41 are available on Kendin/Micrel's web site. */ 42 43#define GTWX5715_KSSPI_SELECT 5 44#define GTWX5715_KSSPI_TXD 6 45#define GTWX5715_KSSPI_CLOCK 7 46#define GTWX5715_KSSPI_RXD 12 47 48/* The "reset" button is wired to GPIO 3. 49 The GPIO is brought "low" when the button is pushed. */ 50 51#define GTWX5715_BUTTON_GPIO 3 52 53/* Board Label Front Label 54 LED1 Power 55 LED2 Wireless-G 56 LED3 not populated but could be 57 LED4 Internet 58 LED5 - LED8 Controlled by KS8995M Switch 59 LED9 DMZ */ 60 61#define GTWX5715_LED1_GPIO 2 62#define GTWX5715_LED2_GPIO 9 63#define GTWX5715_LED3_GPIO 8 64#define GTWX5715_LED4_GPIO 1 65#define GTWX5715_LED9_GPIO 4 66 67/* 68 * Xscale UART registers are 32 bits wide with only the least 69 * significant 8 bits having any meaning. From a configuration 70 * perspective, this means 2 things... 71 * 72 * Setting .regshift = 2 so that the standard 16550 registers 73 * line up on every 4th byte. 74 * 75 * Shifting the register start virtual address +3 bytes when 76 * compiled big-endian. Since register writes are done on a 77 * single byte basis, if the shift isn't done the driver will 78 * write the value into the most significant byte of the register, 79 * which is ignored, instead of the least significant. 80 */ 81 82#ifdef __ARMEB__ 83#define REG_OFFSET 3 84#else 85#define REG_OFFSET 0 86#endif 87 88/* 89 * Only the second or "console" uart is connected on the gtwx5715. 90 */ 91 92static struct resource gtwx5715_uart_resources[] = { 93 { 94 .start = IXP4XX_UART2_BASE_PHYS, 95 .end = IXP4XX_UART2_BASE_PHYS + 0x0fff, 96 .flags = IORESOURCE_MEM, 97 }, 98 { 99 .start = IRQ_IXP4XX_UART2, 100 .end = IRQ_IXP4XX_UART2, 101 .flags = IORESOURCE_IRQ, 102 }, 103 { }, 104}; 105 106 107static struct plat_serial8250_port gtwx5715_uart_platform_data[] = { 108 { 109 .mapbase = IXP4XX_UART2_BASE_PHYS, 110 .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET, 111 .irq = IRQ_IXP4XX_UART2, 112 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, 113 .iotype = UPIO_MEM, 114 .regshift = 2, 115 .uartclk = IXP4XX_UART_XTAL, 116 }, 117 { }, 118}; 119 120static struct platform_device gtwx5715_uart_device = { 121 .name = "serial8250", 122 .id = PLAT8250_DEV_PLATFORM, 123 .dev = { 124 .platform_data = gtwx5715_uart_platform_data, 125 }, 126 .num_resources = 2, 127 .resource = gtwx5715_uart_resources, 128}; 129 130static struct flash_platform_data gtwx5715_flash_data = { 131 .map_name = "cfi_probe", 132 .width = 2, 133}; 134 135static struct resource gtwx5715_flash_resource = { 136 .flags = IORESOURCE_MEM, 137}; 138 139static struct platform_device gtwx5715_flash = { 140 .name = "IXP4XX-Flash", 141 .id = 0, 142 .dev = { 143 .platform_data = >wx5715_flash_data, 144 }, 145 .num_resources = 1, 146 .resource = >wx5715_flash_resource, 147}; 148 149static struct platform_device *gtwx5715_devices[] __initdata = { 150 >wx5715_uart_device, 151 >wx5715_flash, 152}; 153 154static void __init gtwx5715_init(void) 155{ 156 ixp4xx_sys_init(); 157 158 gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0); 159 gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1; 160 161 platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices)); 162} 163 164 165MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)") 166 /* Maintainer: George Joseph */ 167 .phys_io = IXP4XX_UART2_BASE_PHYS, 168 .io_pg_offst = ((IXP4XX_UART2_BASE_VIRT) >> 18) & 0xfffc, 169 .map_io = ixp4xx_map_io, 170 .init_irq = ixp4xx_init_irq, 171 .timer = &ixp4xx_timer, 172 .boot_params = 0x0100, 173 .init_machine = gtwx5715_init, 174MACHINE_END 175