rsk7203.c

uboot200903最新版本的通用uboot

/*
 * Copyright (C) 2008 Nobuhiro Iwamatsu
 * Copyright (C) 2008 Renesas Solutions Corp.
 *
 * u-boot/board/rsk7203/rsk7203.c
 *
 * 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 <asm/io.h>
#include <asm/processor.h>

int checkboard(void)
{
	puts("BOARD: Renesas Technology RSK7203\n");
	return 0;
}

int board_init(void)
{
	return 0;
}

int dram_init(void)
{
	DECLARE_GLOBAL_DATA_PTR;

	gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
	gd->bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
	printf("DRAM:  %dMB\n", CONFIG_SYS_SDRAM_SIZE / (1024 * 1024));
	return 0;
}

void led_set_state(unsigned short value)
{
}

/*
 * The RSK board has the SMSC9118 wired up 'incorrectly'.
 * Byte-swapping is necessary, and so poor performance is inevitable.
 * This problem cannot evade by the swap function of CHIP, this can
 * evade by software Byte-swapping.
 * And this has problem by FIFO access only. pkt_data_pull/pkt_data_push
 * functions necessary to solve this problem.
 */
u32 pkt_data_pull(u32 addr)
{
	volatile u16 *addr_16 = (u16 *)addr;
	return (u32)((swab16(*addr_16) << 16) & 0xFFFF0000)\
				| swab16(*(addr_16 + 1));
}

void pkt_data_push(u32 addr, u32 val)
{
	*(volatile u16 *)(addr + 2) = swab16((u16)val);
	*(volatile u16 *)(addr) = swab16((u16)(val >> 16));
}