u-boot/board/Marvell/guruplug/guruplug.c

/*
 * (C) Copyright 2009
 * Marvell Semiconductor <www.marvell.com>
 * Written-by: Siddarth Gore <gores@marvell.com>
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301 USA
 */

#include <common.h>
#include <miiphy.h>
#include <asm/arch/kirkwood.h>
#include <asm/arch/mpp.h>
#include "guruplug.h"

DECLARE_GLOBAL_DATA_PTR;

int board_init(void)
{
	/*
	 * default gpio configuration
	 * There are maximum 64 gpios controlled through 2 sets of registers
	 * the  below configuration configures mainly initial LED status
	 */
	kw_config_gpio(GURUPLUG_OE_VAL_LOW,
			GURUPLUG_OE_VAL_HIGH,
			GURUPLUG_OE_LOW, GURUPLUG_OE_HIGH);

	/* Multi-Purpose Pins Functionality configuration */
	u32 kwmpp_config[] = {
		MPP0_NF_IO2,
		MPP1_NF_IO3,
		MPP2_NF_IO4,
		MPP3_NF_IO5,
		MPP4_NF_IO6,
		MPP5_NF_IO7,
		MPP6_SYSRST_OUTn,
		MPP7_GPO,	/* GPIO_RST */
		MPP8_TW_SDA,
		MPP9_TW_SCK,
		MPP10_UART0_TXD,
		MPP11_UART0_RXD,
		MPP12_SD_CLK,
		MPP13_SD_CMD,
		MPP14_SD_D0,
		MPP15_SD_D1,
		MPP16_SD_D2,
		MPP17_SD_D3,
		MPP18_NF_IO0,
		MPP19_NF_IO1,
		MPP20_GE1_0,
		MPP21_GE1_1,
		MPP22_GE1_2,
		MPP23_GE1_3,
		MPP24_GE1_4,
		MPP25_GE1_5,
		MPP26_GE1_6,
		MPP27_GE1_7,
		MPP28_GE1_8,
		MPP29_GE1_9,
		MPP30_GE1_10,
		MPP31_GE1_11,
		MPP32_GE1_12,
		MPP33_GE1_13,
		MPP34_GE1_14,
		MPP35_GE1_15,
		MPP36_GPIO,
		MPP37_GPIO,
		MPP38_GPIO,
		MPP39_GPIO,
		MPP40_TDM_SPI_SCK,
		MPP41_TDM_SPI_MISO,
		MPP42_TDM_SPI_MOSI,
		MPP43_GPIO,
		MPP44_GPIO,
		MPP45_GPIO,
		MPP46_GPIO, 	/* M_RLED */
		MPP47_GPIO,	/* M_GLED */
		MPP48_GPIO,	/* B_RLED */
		MPP49_GPIO,	/* B_GLED */
		0
	};
	kirkwood_mpp_conf(kwmpp_config);

	/*
	 * arch number of board
	 */
	gd->bd->bi_arch_number = MACH_TYPE_GURUPLUG;

	/* adress of boot parameters */
	gd->bd->bi_boot_params = kw_sdram_bar(0) + 0x100;

	return 0;
}

int dram_init(void)
{
	int i;

	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
		gd->bd->bi_dram[i].start = kw_sdram_bar(i);
		gd->bd->bi_dram[i].size = kw_sdram_bs(i);
	}
	return 0;
}

#ifdef CONFIG_RESET_PHY_R
void mv_phy_88e1121_init(char *name)
{
	u16 reg;
	u16 devadr;

	if (miiphy_set_current_dev(name))
		return;

	/* command to read PHY dev address */
	if (miiphy_read(name, 0xEE, 0xEE, (u16 *) &devadr)) {
		printf("Err..%s could not read PHY dev address\n",
			__FUNCTION__);
		return;
	}

	/*
	 * Enable RGMII delay on Tx and Rx for CPU port
	 * Ref: sec 4.7.2 of chip datasheet
	 */
	miiphy_write(name, devadr, MV88E1121_PGADR_REG, 2);
	miiphy_read(name, devadr, MV88E1121_MAC_CTRL2_REG, &reg);
	reg |= (MV88E1121_RGMII_RXTM_CTRL | MV88E1121_RGMII_TXTM_CTRL);
	miiphy_write(name, devadr, MV88E1121_MAC_CTRL2_REG, reg);
	miiphy_write(name, devadr, MV88E1121_PGADR_REG, 0);

	/* reset the phy */
	if (miiphy_read (name, devadr, PHY_BMCR, &reg) != 0) {
		printf("Err..(%s) PHY status read failed\n", __FUNCTION__);
		return;
	}
	if (miiphy_write (name, devadr, PHY_BMCR, reg | 0x8000) != 0) {
		printf("Err..(%s) PHY reset failed\n", __FUNCTION__);
		return;
	}

	printf("88E1121 Initialized on %s\n", name);
}

void reset_phy(void)
{
	/* configure and initialize both PHY's */
	mv_phy_88e1121_init("egiga0");
	mv_phy_88e1121_init("egiga1");
}
#endif /* CONFIG_RESET_PHY_R */