ebi_smc911x.c

uboot200903最新版本的通用uboot

/*
 * (C) Copyright 2008 Stefan Roese <[e-mail]>, DENX Software Engineering
 *
 * 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 "vct.h"

/*
 * EBI initialization for SMC911x access
 */
int ebi_init_smc911x(void)
{
	reg_write(EBI_DEV1_CONFIG1(EBI_BASE), 0x00003020);
	reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);

	reg_write(EBI_DEV1_TIM1_RD1(EBI_BASE), 0x00501100);
	reg_write(EBI_DEV1_TIM1_RD2(EBI_BASE), 0x0FF02111);

	reg_write(EBI_DEV1_TIM_EXT(EBI_BASE), 0xFFF00000);
	reg_write(EBI_DEV1_EXT_ACC(EBI_BASE), 0x0FFFFFFF);

	reg_write(EBI_DEV1_TIM1_WR1(EBI_BASE), 0x05001100);
	reg_write(EBI_DEV1_TIM1_WR2(EBI_BASE), 0x3FC21110);

	return 0;
}

/*
 * Accessor functions replacing the "weak" functions in
 * drivers/net/smc911x.c
 */
u32 smc911x_reg_read(u32 addr)
{
	volatile u32 data;

	reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
	ebi_wait();
	reg_write(EBI_CPU_IO_ACCS(EBI_BASE), (EXT_DEVICE_CHANNEL_1 | addr));
	ebi_wait();
	data = reg_read(EBI_IO_ACCS_DATA(EBI_BASE));

	return (data);
}

void smc911x_reg_write(u32 addr, u32 data)
{
	reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
	ebi_wait();
	reg_write(EBI_IO_ACCS_DATA(EBI_BASE), data);
	reg_write(EBI_CPU_IO_ACCS(EBI_BASE),
		  EXT_DEVICE_CHANNEL_1 | EBI_CPU_WRITE | addr);
	ebi_wait();
}

void pkt_data_push(u32 addr, u32 data)
{
	reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004A);
	ebi_wait();
	reg_write(EBI_IO_ACCS_DATA(EBI_BASE), data);
	reg_write(EBI_CPU_IO_ACCS(EBI_BASE),
		  EXT_DEVICE_CHANNEL_1 | EBI_CPU_WRITE | addr);
	ebi_wait();

	return;
}

u32 pkt_data_pull(u32 addr)
{
	volatile u32 data;

	reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004A);
	ebi_wait();
	reg_write(EBI_CPU_IO_ACCS(EBI_BASE), (EXT_DEVICE_CHANNEL_1 | addr));
	ebi_wait();
	data = reg_read(EBI_IO_ACCS_DATA(EBI_BASE));

	return data;
}