collie.c

来自「h内核」· C语言 代码 · 共 190 行

/*
 * linux/arch/arm/mach-sa1100/collie.c
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.
 *
 * This file contains all Collie-specific tweaks.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * ChangeLog:
 *  03-06-2004 John Lenz <[e-mail]>
 *  06-04-2002 Chris Larson <[e-mail]>
 *  04-16-2001 Lineo Japan,Inc. ...
 */

#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/timer.h>

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

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

#include <asm/hardware/scoop.h>
#include <asm/hardware/locomo.h>

#include "generic.h"

static struct resource collie_scoop_resources[] = {
	[0] = {
		.start		= 0x40800000,
		.end		= 0x40800fff,
		.flags		= IORESOURCE_MEM,
	},
};

static struct scoop_config collie_scoop_setup = {
	.io_dir 	= COLLIE_SCOOP_IO_DIR,
	.io_out		= COLLIE_SCOOP_IO_OUT,
};

static struct platform_device colliescoop_device = {
	.name		= "sharp-scoop",
	.id		= -1,
	.dev		= {
 		.platform_data	= &collie_scoop_setup,
	},
	.num_resources	= ARRAY_SIZE(collie_scoop_resources),
	.resource	= collie_scoop_resources,
};


static struct resource locomo_resources[] = {
	[0] = {
		.start		= 0x40000000,
		.end		= 0x40001fff,
		.flags		= IORESOURCE_MEM,
	},
	[1] = {
		.start		= IRQ_GPIO25,
		.end		= IRQ_GPIO25,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device locomo_device = {
	.name		= "locomo",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(locomo_resources),
	.resource	= locomo_resources,
};

static struct platform_device *devices[] __initdata = {
	&locomo_device,
	&colliescoop_device,
};

static struct mtd_partition collie_partitions[] = {
	{
		.name		= "bootloader",
		.offset 	= 0,
		.size		= 0x000C0000,
		.mask_flags	= MTD_WRITEABLE
	}, {
		.name		= "kernel",
		.offset 	= MTDPART_OFS_APPEND,
		.size		= 0x00100000,
	}, {
		.name		= "rootfs",
		.offset 	= MTDPART_OFS_APPEND,
		.size		= 0x00e20000,
	}
};

static void collie_set_vpp(int vpp)
{
	write_scoop_reg(SCOOP_GPCR, read_scoop_reg(SCOOP_GPCR) | COLLIE_SCP_VPEN);
	if (vpp) {
		write_scoop_reg(SCOOP_GPWR, read_scoop_reg(SCOOP_GPWR) | COLLIE_SCP_VPEN);
	} else {
		write_scoop_reg(SCOOP_GPWR, read_scoop_reg(SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
	}
}

static struct flash_platform_data collie_flash_data = {
	.map_name	= "cfi_probe",
	.set_vpp	= collie_set_vpp,
	.parts		= collie_partitions,
	.nr_parts	= ARRAY_SIZE(collie_partitions),
};

static struct resource collie_flash_resources[] = {
	{
		.start	= SA1100_CS0_PHYS,
		.end	= SA1100_CS0_PHYS + SZ_32M - 1,
		.flags	= IORESOURCE_MEM,
	}
};

static void __init collie_init(void)
{
	int ret = 0;

	/* cpu initialize */
	GAFR = ( GPIO_SSP_TXD | \
		 GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK | GPIO_TIC_ACK | \
		 GPIO_32_768kHz );

	GPDR = ( GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 | \
		 GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD | \
		 GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK | \
		 GPIO_SDLC_AAF | GPIO_UART_SCLK1 | GPIO_32_768kHz );
	GPLR = GPIO_GPIO18;

	// PPC pin setting
	PPDR = ( PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 | \
		 PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS | \
	 	 PPC_TXD1 | PPC_TXD2 | PPC_RXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM );

	PSDR = ( PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4 );

	GAFR |= GPIO_32_768kHz;
	GPDR |= GPIO_32_768kHz;
	TUCR  = TUCR_32_768kHz;

	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
	if (ret) {
		printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
	}

	sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
			      ARRAY_SIZE(collie_flash_resources));
}

static struct map_desc collie_io_desc[] __initdata = {
	/* virtual     physical    length      type */
	{0xe8000000, 0x00000000, 0x02000000, MT_DEVICE},	/* 32M main flash (cs0) */
	{0xea000000, 0x08000000, 0x02000000, MT_DEVICE},	/* 32M boot flash (cs1) */
};

static void __init collie_map_io(void)
{
	sa1100_map_io();
	iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
}

MACHINE_START(COLLIE, "Sharp-Collie")
	BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
	MAPIO(collie_map_io)
	INITIRQ(sa1100_init_irq)
	.timer		= &sa1100_timer,
	.init_machine	= collie_init,
MACHINE_END