lart.c

来自「底层驱动开发」· C语言 代码 · 共 64 行

/*
 * linux/arch/arm/mach-sa1100/lart.c
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>

#include <asm/hardware.h>
#include <asm/setup.h>
#include <asm/mach-types.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>
#include <asm/arch/mcp.h>

#include "generic.h"


#warning "include/asm/arch-sa1100/ide.h needs fixing for lart"

static struct mcp_plat_data lart_mcp_data = {
	.mccr0		= MCCR0_ADM,
	.sclk_rate	= 11981000,
};

static void __init lart_init(void)
{
	sa11x0_set_mcp_data(&lart_mcp_data);
}

static struct map_desc lart_io_desc[] __initdata = {
 /* virtual     physical    length      type */
  { 0xe8000000, 0x00000000, 0x00400000, MT_DEVICE }, /* main flash memory */
  { 0xec000000, 0x08000000, 0x00400000, MT_DEVICE }  /* main flash, alternative location */
};

static void __init lart_map_io(void)
{
	sa1100_map_io();
	iotable_init(lart_io_desc, ARRAY_SIZE(lart_io_desc));

	sa1100_register_uart(0, 3);
	sa1100_register_uart(1, 1);
	sa1100_register_uart(2, 2);

	GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
	GPDR |= GPIO_UART_TXD;
	GPDR &= ~GPIO_UART_RXD;
	PPAR |= PPAR_UPR;
}

MACHINE_START(LART, "LART")
	.phys_ram	= 0xc0000000,
	.phys_io	= 0x80000000,
	.io_pg_offst	= ((0xf8000000) >> 18) & 0xfffc,
	.boot_params	= 0xc0000100,
	.map_io		= lart_map_io,
	.init_irq	= sa1100_init_irq,
	.init_machine	= lart_init,
	.timer		= &sa1100_timer,
MACHINE_END