arch.c

来自「优龙2410linux2.6.8内核源代码」· C语言 代码 · 共 77 行

/*
 * linux/arch/arm/mach-iop3xx/arch.c
 *
 * Author: Nicolas Pitre <[e-mail]>
 * Copyright (C) 2001 MontaVista Software, Inc.
 *
 * 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.
 *
 */
#include <linux/config.h>
#include <linux/init.h>
#include <linux/major.h>
#include <linux/fs.h>

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

#ifdef CONFIG_ARCH_IQ80310
extern void iq80310_map_io(void);
extern void iq80310_init_irq(void);
#endif

#ifdef CONFIG_ARCH_IQ80321
extern void iq80321_map_io(void);
extern void iop321_init_irq(void);
extern void iop321_init_time(void);
#endif

#ifdef CONFIG_ARCH_IQ80310
static void __init
fixup_iq80310(struct machine_desc *desc, struct tag *tags,
	      char **cmdline, struct meminfo *mi)
{
	system_rev = (*(volatile unsigned int*)0xfe830000) & 0x0f;

	if (system_rev)
		system_rev = 0xF;
}
#endif

#ifdef CONFIG_ARCH_IQ80321
static void __init
fixup_iop321(struct machine_desc *desc, struct param_struct *params,
	      char **cmdline, struct meminfo *mi)
{
}
#endif

#ifdef CONFIG_ARCH_IQ80310
MACHINE_START(IQ80310, "Cyclone IQ80310")
	MAINTAINER("MontaVista Software Inc.")
	BOOT_MEM(0xa0000000, 0xfe000000, 0xfe000000)
	FIXUP(fixup_iq80310)
	MAPIO(iq80310_map_io)
	INITIRQ(iq80310_init_irq)
MACHINE_END

#elif defined(CONFIG_ARCH_IQ80321)
MACHINE_START(IQ80321, "Intel IQ80321")
	MAINTAINER("MontaVista Software, Inc.")
	BOOT_MEM(PHYS_OFFSET, IQ80321_UART1, 0xfe800000)
	FIXUP(fixup_iop321)
	MAPIO(iq80321_map_io)
	INITIRQ(iop321_init_irq)
	INITTIME(iop321_init_time)
MACHINE_END

#else
#error No machine descriptor defined for this IOP310 implementation
#endif