gtwx5715-setup.c
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/*
* arch/arm/mach-ixp4xx/gtwx5715-setup.c
*
* Gemtek GTWX5715 (Linksys WRV54G) board setup
*
* Copyright (C) 2004 George T. Joseph
* Derived from Coyote
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <linux/init.h>
#include <linux/device.h>
#include <linux/serial.h>
#include <linux/tty.h>
#include <linux/serial_8250.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
/* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch
and operate as an SPI type interface. The details of the interface
are available on Kendin/Micrel's web site. */
#define GTWX5715_KSSPI_SELECT 5
#define GTWX5715_KSSPI_TXD 6
#define GTWX5715_KSSPI_CLOCK 7
#define GTWX5715_KSSPI_RXD 12
/* The "reset" button is wired to GPIO 3.
The GPIO is brought "low" when the button is pushed. */
#define GTWX5715_BUTTON_GPIO 3
/* Board Label Front Label
LED1 Power
LED2 Wireless-G
LED3 not populated but could be
LED4 Internet
LED5 - LED8 Controlled by KS8995M Switch
LED9 DMZ */
#define GTWX5715_LED1_GPIO 2
#define GTWX5715_LED2_GPIO 9
#define GTWX5715_LED3_GPIO 8
#define GTWX5715_LED4_GPIO 1
#define GTWX5715_LED9_GPIO 4
/*
* Xscale UART registers are 32 bits wide with only the least
* significant 8 bits having any meaning. From a configuration
* perspective, this means 2 things...
*
* Setting .regshift = 2 so that the standard 16550 registers
* line up on every 4th byte.
*
* Shifting the register start virtual address +3 bytes when
* compiled big-endian. Since register writes are done on a
* single byte basis, if the shift isn't done the driver will
* write the value into the most significant byte of the register,
* which is ignored, instead of the least significant.
*/
#ifdef __ARMEB__
#define REG_OFFSET 3
#else
#define REG_OFFSET 0
#endif
/*
* Only the second or "console" uart is connected on the gtwx5715.
*/
static struct resource gtwx5715_uart_resources[] = {
{
.start = IXP4XX_UART2_BASE_PHYS,
.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_IXP4XX_UART2,
.end = IRQ_IXP4XX_UART2,
.flags = IORESOURCE_IRQ,
},
{ },
};
static struct plat_serial8250_port gtwx5715_uart_platform_data[] = {
{
.mapbase = IXP4XX_UART2_BASE_PHYS,
.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
.irq = IRQ_IXP4XX_UART2,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = IXP4XX_UART_XTAL,
},
{ },
};
static struct platform_device gtwx5715_uart_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = gtwx5715_uart_platform_data,
},
.num_resources = 2,
.resource = gtwx5715_uart_resources,
};
static struct flash_platform_data gtwx5715_flash_data = {
.map_name = "cfi_probe",
.width = 2,
};
static struct resource gtwx5715_flash_resource = {
.flags = IORESOURCE_MEM,
};
static struct platform_device gtwx5715_flash = {
.name = "IXP4XX-Flash",
.id = 0,
.dev = {
.platform_data = >wx5715_flash_data,
},
.num_resources = 1,
.resource = >wx5715_flash_resource,
};
static struct platform_device *gtwx5715_devices[] __initdata = {
>wx5715_uart_device,
>wx5715_flash,
};
static void __init gtwx5715_init(void)
{
ixp4xx_sys_init();
gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1;
platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
}
MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)")
/* Maintainer: George Joseph */
.map_io = ixp4xx_map_io,
.init_early = ixp4xx_init_early,
.init_irq = ixp4xx_init_irq,
.init_time = ixp4xx_timer_init,
.atag_offset = 0x100,
.init_machine = gtwx5715_init,
#if defined(CONFIG_PCI)
.dma_zone_size = SZ_64M,
#endif
.restart = ixp4xx_restart,
MACHINE_END