setup.c

microwindows移植到S3C44B0的源码

/*
 * setup.c
 *
 * BRIEF MODULE DESCRIPTION
 * Galileo Evaluation Boards - board dependent boot routines
 *
 * Copyright (C) 2000 RidgeRun, Inc.
 * Author: RidgeRun, Inc.
 *   [e-mail], [e-mail], [e-mail]
 *
 *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  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.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/timex.h>
#include <asm/bootinfo.h>
#include <asm/page.h>
#include <asm/bootinfo.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/pci.h>
#include <asm/processor.h>
#include <asm/ptrace.h>
#include <asm/reboot.h>
#include <asm/mc146818rtc.h>
#include <asm/traps.h>
#include <linux/version.h>
#include <linux/bootmem.h>

extern struct rtc_ops no_rtc_ops;

/* These functions are used for rebooting or halting the machine*/
extern void galileo_machine_restart(char *command);
extern void galileo_machine_halt(void);
extern void galileo_machine_power_off(void);
/* 
 *This structure holds pointers to the pci configuration space accesses
 *and interrupts allocating routine for device over the PCI
 */
extern struct pci_ops galileo_pci_ops;

extern unsigned long mips_machgroup;

char arcs_cmdline[CL_SIZE] = { "console=ttyS0,115200 "
	    "root=/dev/nfs rw nfsroot=192.168.1.1:/mnt/disk2/fs.gal "
	    "ip=192.168.1.211:192.168.1.1:::gt::"
};

//struct eeprom_parameters eeprom_param;

/*
 * This function is added because arch/mips/mm/init.c needs it
 * basically it does nothing
 */
void prom_free_prom_memory(void)
{
}

extern void (*board_time_init) (struct irqaction * irq);

static unsigned char galileo_rtc_read_data(unsigned long addr)
{
	return 0;
}

static void galileo_rtc_write_data(unsigned char data, unsigned long addr)
{
}

static int galileo_rtc_bcd_mode(void)
{
	return 0;
}

struct rtc_ops galileo_rtc_ops = {
	&galileo_rtc_read_data,
	&galileo_rtc_write_data,
	&galileo_rtc_bcd_mode
};


void __init bus_error_init(void) { /* nothing */ }


/********************************************************************
 *ev64120_setup -
 *
 *Initializes basic routines and structures pointers, memory size (as
 *given by the bios and saves the command line.
 *
 *
 *Inputs :
 *
 *Outpus :
 *
 *********************************************************************/
extern void galileo_time_init();
void ev64120_setup(void)
{
	unsigned int i, j;

	//printk(KERN_INFO "ev64120_setup\n");

	_machine_restart = galileo_machine_restart;
	_machine_halt = galileo_machine_halt;
	_machine_power_off = galileo_machine_power_off;

	rtc_ops = &galileo_rtc_ops;

	board_time_init = galileo_time_init;
	set_io_port_base(KSEG1);

#ifdef CONFIG_L2_L3_CACHE
#error "external cache not implemented yet"
	config_register = read_32bit_cp0_register(CP0_CONFIG);
	printk("\n\n\nchecking second level cache cp0_config = %08lx\n",
	       config_register);
	if (config_register & CONF_SC) {	// second/third level cache available
		config_register = config_register & (1 << 12);
		write_32bit_cp0_register(CP0_CONFIG, config_register);
		printk
		    ("\n\n\nchecking second level cache cp0_config = %08lx\n",
		     config_register);
	}
#endif

}

const char *get_system_type(void)
{
	return "Galileo EV64120A";
}

/*
 * SetUpBootInfo -
 *
 * This function is called at very first stages of kernel startup.
 * It specifies for the kernel the evaluation board that the linux
 * is running on. Then it saves the eprom parameters that holds the
 * command line, memory size etc...
 *
 * Inputs :
 * argc - nothing
 * argv - holds a pointer to the eprom parameters
 * envp - nothing
 */

void SetUpBootInfo(int argc, char **argv, char **envp)
{
	mips_machgroup = MACH_GROUP_GALILEO;
	mips_machtype = MACH_EV64120A;
}

void __init prom_init(int a, char **b, char **c, int *d)
{
	unsigned long free_start, free_end, start_pfn, bootmap_size;

	mips_machgroup = MACH_GROUP_GALILEO;
	add_memory_region(0, 32 << 20, BOOT_MEM_RAM);
}