149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
/*
|
|
* arch/arm/mach-ixp4xx/gtwx5715-setup.c
|
|
*
|
|
* Gemtek GTWX5715 (Linksys WRV54G) board settup
|
|
*
|
|
* 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 <asm/hardware.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/flash.h>
|
|
#include <asm/arch/gtwx5715.h>
|
|
|
|
/*
|
|
* 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 = {
|
|
.start = GTWX5715_FLASH_BASE,
|
|
.end = GTWX5715_FLASH_BASE + GTWX5715_FLASH_SIZE - 1,
|
|
.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)
|
|
{
|
|
platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
|
|
}
|
|
|
|
|
|
MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)")
|
|
/* Maintainer: George Joseph */
|
|
.phys_ram = PHYS_OFFSET,
|
|
.phys_io = IXP4XX_UART2_BASE_PHYS,
|
|
.io_pg_offst = ((IXP4XX_UART2_BASE_VIRT) >> 18) & 0xfffc,
|
|
.map_io = ixp4xx_map_io,
|
|
.init_irq = ixp4xx_init_irq,
|
|
.timer = &ixp4xx_timer,
|
|
.boot_params = 0x0100,
|
|
.init_machine = gtwx5715_init,
|
|
MACHINE_END
|
|
|
|
|