qemu-mips.c

来自「uboot详细解读可用启动引导LINUX2.6内核」· C语言 代码 · 共 90 行

/*
 * (C) Copyright 2007
 * Vlad Lungu [e-mail]
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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 <common.h>
#include <command.h>
#include <asm/mipsregs.h>
#include <asm/io.h>

phys_size_t initdram(int board_type)
{
	/* Sdram is setup by assembler code */
	/* If memory could be changed, we should return the true value here */
	return MEM_SIZE*1024*1024;
}

int checkboard(void)
{
	u32 proc_id;
	u32 config1;

	proc_id = read_c0_prid();
	printf("Board: Qemu -M mips CPU: ");
	switch (proc_id) {
	case 0x00018000:
		printf("4Kc");
		break;
	case 0x00018400:
		printf("4KEcR1");
		break;
	case 0x00019000:
		printf("4KEc");
		break;
	case 0x00019300:
		config1 = read_c0_config1();
		if (config1 & 1)
			printf("24Kf");
		else
			printf("24Kc");
		break;
	case 0x00019500:
		printf("34Kf");
		break;
	case 0x00000400:
		printf("R4000");
		break;
	case 0x00018100:
		config1 = read_c0_config1();
		if (config1 & 1)
			printf("5Kf");
		else
			printf("5Kc");
		break;
	case 0x000182a0:
		printf("20Kc");
		break;

	default:
		printf("unknown");
	}
	printf(" proc_id=0x%x\n", proc_id);

	return 0;
}

int misc_init_r(void)
{
	set_io_port_base(0);
	return 0;
}