diff options
Diffstat (limited to 'arch/arm/mach-ixp4xx/gtwx5715-setup.c')
| -rw-r--r-- | arch/arm/mach-ixp4xx/gtwx5715-setup.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/gtwx5715-setup.c b/arch/arm/mach-ixp4xx/gtwx5715-setup.c new file mode 100644 index 0000000..e77c86e --- /dev/null +++ b/arch/arm/mach-ixp4xx/gtwx5715-setup.c @@ -0,0 +1,153 @@ +/* + * 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, + .iotype = UPIO_MEM, + .regshift = 2, + .uartclk = IXP4XX_UART_XTAL, + }, + { }, +}; + +static struct platform_device gtwx5715_uart_device = { + .name = "serial8250", + .id = 0, + .dev = { + .platform_data = gtwx5715_uart_platform_data, + }, + .num_resources = 2, + .resource = gtwx5715_uart_resources, +}; + + +void __init gtwx5715_map_io(void) +{ + ixp4xx_map_io(); +} + +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, + .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") + BOOT_MEM(PHYS_OFFSET, IXP4XX_UART2_BASE_PHYS, + IXP4XX_UART2_BASE_VIRT) + MAPIO(gtwx5715_map_io) + INITIRQ(ixp4xx_init_irq) + .timer = &ixp4xx_timer, + BOOT_PARAMS(0x0100) + INIT_MACHINE(gtwx5715_init) +MACHINE_END + + |