board/freescale/mx51evk/mx51evk.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2009 Freescale Semiconductor, Inc.
  *
  * 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 <asm/io.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/mx51_pins.h>
 #include <asm/arch/iomux.h>
 #include <asm/errno.h>
 #include <asm/arch/sys_proto.h>
 #include <i2c.h>
 #include <mmc.h>
 #include <fsl_esdhc.h>
 #include "mx51evk.h"

 DECLARE_GLOBAL_DATA_PTR;

 static u32 system_rev;
 struct io_board_ctrl *mx51_io_board;

 #ifdef CONFIG_FSL_ESDHC
 struct fsl_esdhc_cfg esdhc_cfg[2] = {
 	{MMC_SDHC1_BASE_ADDR, 1, 1},
 	{MMC_SDHC2_BASE_ADDR, 1, 1},
 };
 #endif

 u32 get_board_rev(void)
 {
 	return system_rev;
 }

 int dram_init(void)
 {
 	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 	gd->bd->bi_dram[0].size = get_ram_size((long *)PHYS_SDRAM_1,
 			PHYS_SDRAM_1_SIZE);
 	return 0;
 }

 static void setup_iomux_uart(void)
 {
 	unsigned int pad = PAD_CTL_HYS_ENABLE | PAD_CTL_PKE_ENABLE |
 			PAD_CTL_PUE_PULL | PAD_CTL_DRV_HIGH;

 	mxc_request_iomux(MX51_PIN_UART1_RXD, IOMUX_CONFIG_ALT0);
 	mxc_iomux_set_pad(MX51_PIN_UART1_RXD, pad | PAD_CTL_SRE_FAST);
 	mxc_request_iomux(MX51_PIN_UART1_TXD, IOMUX_CONFIG_ALT0);
 	mxc_iomux_set_pad(MX51_PIN_UART1_TXD, pad | PAD_CTL_SRE_FAST);
 	mxc_request_iomux(MX51_PIN_UART1_RTS, IOMUX_CONFIG_ALT0);
 	mxc_iomux_set_pad(MX51_PIN_UART1_RTS, pad);
 	mxc_request_iomux(MX51_PIN_UART1_CTS, IOMUX_CONFIG_ALT0);
 	mxc_iomux_set_pad(MX51_PIN_UART1_CTS, pad);
 }

 static void setup_expio(void)
 {
 	u32 reg;
 	struct weim *pweim = (struct weim *)WEIM_BASE_ADDR;
 	struct clkctl *pclkctl = (struct clkctl *)CCM_BASE_ADDR;

 	/* CS5 setup */
 	mxc_request_iomux(MX51_PIN_EIM_CS5, IOMUX_CONFIG_ALT0);
 	writel(0x00410089, &pweim[5].csgcr1);
 	writel(0x00000002, &pweim[5].csgcr2);

 	/* RWSC=50, RADVA=2, RADVN=6, OEA=0, OEN=0, RCSA=0, RCSN=0 */
 	writel(0x32260000, &pweim[5].csrcr1);

 	/* APR = 0 */
 	writel(0x00000000, &pweim[5].csrcr2);

 	/*
 	 * WAL=0, WBED=1, WWSC=50, WADVA=2, WADVN=6, WEA=0, WEN=0,
 	 * WCSA=0, WCSN=0
 	 */
 	writel(0x72080F00, &pweim[5].cswcr1);

 	mx51_io_board = (struct io_board_ctrl *)(CS5_BASE_ADDR +
 						IO_BOARD_OFFSET);
 	if ((readw(&mx51_io_board->id1) == 0xAAAA) &&
 		(readw(&mx51_io_board->id2) == 0x5555)) {
 		if (is_soc_rev(CHIP_REV_2_0) < 0) {
 			reg = readl(&pclkctl->cbcdr);
 			reg = (reg & (~0x70000)) | 0x30000;
 			writel(reg, &pclkctl->cbcdr);
 			/* make sure divider effective */
 			while (readl(&pclkctl->cdhipr) != 0)
 				;
 			writel(0x0, &pclkctl->ccdr);
 		}
 	} else {
 		/* CS1 */
 		writel(0x00410089, &pweim[1].csgcr1);
 		writel(0x00000002, &pweim[1].csgcr2);
 		/*  RWSC=50, RADVA=2, RADVN=6, OEA=0, OEN=0, RCSA=0, RCSN=0 */
 		writel(0x32260000, &pweim[1].csrcr1);
 		/* APR=0 */
 		writel(0x00000000, &pweim[1].csrcr2);
 		/*
 		 * WAL=0, WBED=1, WWSC=50, WADVA=2, WADVN=6, WEA=0,
 		 * WEN=0, WCSA=0, WCSN=0
 		 */
 		writel(0x72080F00, &pweim[1].cswcr1);
 		mx51_io_board = (struct io_board_ctrl *)(CS1_BASE_ADDR +
 						IO_BOARD_OFFSET);
 	}

 	/* Reset interrupt status reg */
 	writew(0x1F, &(mx51_io_board->int_rest));
 	writew(0x00, &(mx51_io_board->int_rest));
 	writew(0xFFFF, &(mx51_io_board->int_mask));

 	/* Reset the XUART and Ethernet controllers */
 	reg = readw(&(mx51_io_board->sw_reset));
 	reg |= 0x9;
 	writew(reg, &(mx51_io_board->sw_reset));
 	reg &= ~0x9;
 	writew(reg, &(mx51_io_board->sw_reset));
 }

 static void setup_iomux_fec(void)
 {
 	/*FEC_MDIO*/
 	mxc_request_iomux(MX51_PIN_EIM_EB2 , IOMUX_CONFIG_ALT3);
 	mxc_iomux_set_pad(MX51_PIN_EIM_EB2 , 0x1FD);

 	/*FEC_MDC*/
 	mxc_request_iomux(MX51_PIN_NANDF_CS3, IOMUX_CONFIG_ALT2);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_CS3, 0x2004);

 	/* FEC RDATA[3] */
 	mxc_request_iomux(MX51_PIN_EIM_CS3, IOMUX_CONFIG_ALT3);
 	mxc_iomux_set_pad(MX51_PIN_EIM_CS3, 0x180);

 	/* FEC RDATA[2] */
 	mxc_request_iomux(MX51_PIN_EIM_CS2, IOMUX_CONFIG_ALT3);
 	mxc_iomux_set_pad(MX51_PIN_EIM_CS2, 0x180);

 	/* FEC RDATA[1] */
 	mxc_request_iomux(MX51_PIN_EIM_EB3, IOMUX_CONFIG_ALT3);
 	mxc_iomux_set_pad(MX51_PIN_EIM_EB3, 0x180);

 	/* FEC RDATA[0] */
 	mxc_request_iomux(MX51_PIN_NANDF_D9, IOMUX_CONFIG_ALT2);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_D9, 0x2180);

 	/* FEC TDATA[3] */
 	mxc_request_iomux(MX51_PIN_NANDF_CS6, IOMUX_CONFIG_ALT2);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_CS6, 0x2004);

 	/* FEC TDATA[2] */
 	mxc_request_iomux(MX51_PIN_NANDF_CS5, IOMUX_CONFIG_ALT2);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_CS5, 0x2004);

 	/* FEC TDATA[1] */
 	mxc_request_iomux(MX51_PIN_NANDF_CS4, IOMUX_CONFIG_ALT2);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_CS4, 0x2004);

 	/* FEC TDATA[0] */
 	mxc_request_iomux(MX51_PIN_NANDF_D8, IOMUX_CONFIG_ALT2);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_D8, 0x2004);

 	/* FEC TX_EN */
 	mxc_request_iomux(MX51_PIN_NANDF_CS7, IOMUX_CONFIG_ALT1);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_CS7, 0x2004);

 	/* FEC TX_ER */
 	mxc_request_iomux(MX51_PIN_NANDF_CS2, IOMUX_CONFIG_ALT2);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_CS2, 0x2004);

 	/* FEC TX_CLK */
 	mxc_request_iomux(MX51_PIN_NANDF_RDY_INT, IOMUX_CONFIG_ALT1);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_RDY_INT, 0x2180);

 	/* FEC TX_COL */
 	mxc_request_iomux(MX51_PIN_NANDF_RB2, IOMUX_CONFIG_ALT1);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_RB2, 0x2180);

 	/* FEC RX_CLK */
 	mxc_request_iomux(MX51_PIN_NANDF_RB3, IOMUX_CONFIG_ALT1);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_RB3, 0x2180);

 	/* FEC RX_CRS */
 	mxc_request_iomux(MX51_PIN_EIM_CS5, IOMUX_CONFIG_ALT3);
 	mxc_iomux_set_pad(MX51_PIN_EIM_CS5, 0x180);

 	/* FEC RX_ER */
 	mxc_request_iomux(MX51_PIN_EIM_CS4, IOMUX_CONFIG_ALT3);
 	mxc_iomux_set_pad(MX51_PIN_EIM_CS4, 0x180);

 	/* FEC RX_DV */
 	mxc_request_iomux(MX51_PIN_NANDF_D11, IOMUX_CONFIG_ALT2);
 	mxc_iomux_set_pad(MX51_PIN_NANDF_D11, 0x2180);
 }

 #ifdef CONFIG_FSL_ESDHC
 int board_mmc_getcd(u8 *cd, struct mmc *mmc)
 {
 	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;

 	if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
 		*cd = readl(GPIO1_BASE_ADDR) & 0x01;
 	else
 		*cd = readl(GPIO1_BASE_ADDR) & 0x40;

 	return 0;
 }

 int board_mmc_init(bd_t *bis)
 {
 	u32 index;
 	s32 status = 0;

 	for (index = 0; index < CONFIG_SYS_FSL_ESDHC_NUM;
 			index++) {
 		switch (index) {
 		case 0:
 			mxc_request_iomux(MX51_PIN_SD1_CMD,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_request_iomux(MX51_PIN_SD1_CLK,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_request_iomux(MX51_PIN_SD1_DATA0,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_request_iomux(MX51_PIN_SD1_DATA1,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_request_iomux(MX51_PIN_SD1_DATA2,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_request_iomux(MX51_PIN_SD1_DATA3,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_iomux_set_pad(MX51_PIN_SD1_CMD,
 				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
 				PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
 				PAD_CTL_PUE_PULL |
 				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
 			mxc_iomux_set_pad(MX51_PIN_SD1_CLK,
 				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
 				PAD_CTL_HYS_NONE | PAD_CTL_47K_PU |
 				PAD_CTL_PUE_PULL |
 				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
 			mxc_iomux_set_pad(MX51_PIN_SD1_DATA0,
 				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
 				PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
 				PAD_CTL_PUE_PULL |
 				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
 			mxc_iomux_set_pad(MX51_PIN_SD1_DATA1,
 				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
 				PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
 				PAD_CTL_PUE_PULL |
 				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
 			mxc_iomux_set_pad(MX51_PIN_SD1_DATA2,
 				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
 				PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
 				PAD_CTL_PUE_PULL |
 				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
 			mxc_iomux_set_pad(MX51_PIN_SD1_DATA3,
 				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
 				PAD_CTL_HYS_ENABLE | PAD_CTL_100K_PD |
 				PAD_CTL_PUE_PULL |
 				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
 			mxc_request_iomux(MX51_PIN_GPIO1_0,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_iomux_set_pad(MX51_PIN_GPIO1_0,
 				PAD_CTL_HYS_ENABLE);
 			mxc_request_iomux(MX51_PIN_GPIO1_1,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_iomux_set_pad(MX51_PIN_GPIO1_1,
 				PAD_CTL_HYS_ENABLE);
 			break;
 		case 1:
 			mxc_request_iomux(MX51_PIN_SD2_CMD,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_request_iomux(MX51_PIN_SD2_CLK,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_request_iomux(MX51_PIN_SD2_DATA0,
 				IOMUX_CONFIG_ALT0);
 			mxc_request_iomux(MX51_PIN_SD2_DATA1,
 				IOMUX_CONFIG_ALT0);
 			mxc_request_iomux(MX51_PIN_SD2_DATA2,
 				IOMUX_CONFIG_ALT0);
 			mxc_request_iomux(MX51_PIN_SD2_DATA3,
 				IOMUX_CONFIG_ALT0);
 			mxc_iomux_set_pad(MX51_PIN_SD2_CMD,
 				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
 				PAD_CTL_SRE_FAST);
 			mxc_iomux_set_pad(MX51_PIN_SD2_CLK,
 				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
 				PAD_CTL_SRE_FAST);
 			mxc_iomux_set_pad(MX51_PIN_SD2_DATA0,
 				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
 				PAD_CTL_SRE_FAST);
 			mxc_iomux_set_pad(MX51_PIN_SD2_DATA1,
 				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
 				PAD_CTL_SRE_FAST);
 			mxc_iomux_set_pad(MX51_PIN_SD2_DATA2,
 				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
 				PAD_CTL_SRE_FAST);
 			mxc_iomux_set_pad(MX51_PIN_SD2_DATA3,
 				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
 				PAD_CTL_SRE_FAST);
 			mxc_request_iomux(MX51_PIN_SD2_CMD,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_request_iomux(MX51_PIN_GPIO1_6,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_iomux_set_pad(MX51_PIN_GPIO1_6,
 				PAD_CTL_HYS_ENABLE);
 			mxc_request_iomux(MX51_PIN_GPIO1_5,
 				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
 			mxc_iomux_set_pad(MX51_PIN_GPIO1_5,
 				PAD_CTL_HYS_ENABLE);
 			break;
 		default:
 			printf("Warning: you configured more ESDHC controller"
 				"(%d) as supported by the board(2)\n",
 				CONFIG_SYS_FSL_ESDHC_NUM);
 			return status;
 		}
 		status |= fsl_esdhc_initialize(bis, &esdhc_cfg[index]);
 	}
 	return status;
 }
 #endif

 int board_init(void)
 {
 	system_rev = get_cpu_rev();

 	gd->bd->bi_arch_number = MACH_TYPE_MX51_BABBAGE;
 	/* address of boot parameters */
 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;

 	setup_iomux_uart();
 	setup_expio();
 	setup_iomux_fec();
 	return 0;
 }

 int checkboard(void)
 {
 	puts("Board: MX51EVK ");

 	switch (system_rev & 0xff) {
 	case CHIP_REV_3_0:
 		puts("3.0 [");
 		break;
 	case CHIP_REV_2_5:
 		puts("2.5 [");
 		break;
 	case CHIP_REV_2_0:
 		puts("2.0 [");
 		break;
 	case CHIP_REV_1_1:
 		puts("1.1 [");
 		break;
 	case CHIP_REV_1_0:
 	default:
 		puts("1.0 [");
 		break;
 	}

 	switch (__raw_readl(SRC_BASE_ADDR + 0x8)) {
 	case 0x0001:
 		puts("POR");
 		break;
 	case 0x0009:
 		puts("RST");
 		break;
 	case 0x0010:
 	case 0x0011:
 		puts("WDOG");
 		break;
 	default:
 		puts("unknown");
 	}
 	puts("]\n");
 	return 0;
 }
	/*
	* (C) Copyright 2009 Freescale Semiconductor, Inc.
	*
	* 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 <asm/io.h>
	#include <asm/arch/imx-regs.h>
	#include <asm/arch/mx51_pins.h>
	#include <asm/arch/iomux.h>
	#include <asm/errno.h>
	#include <asm/arch/sys_proto.h>
	#include <i2c.h>
	#include <mmc.h>
	#include <fsl_esdhc.h>
	#include "mx51evk.h"

	DECLARE_GLOBAL_DATA_PTR;

	static u32 system_rev;
	struct io_board_ctrl *mx51_io_board;

	#ifdef CONFIG_FSL_ESDHC
	struct fsl_esdhc_cfg esdhc_cfg[2] = {
	{MMC_SDHC1_BASE_ADDR, 1, 1},
	{MMC_SDHC2_BASE_ADDR, 1, 1},
	};
	#endif

	u32 get_board_rev(void)
	{
	return system_rev;
	}

	int dram_init(void)
	{
	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	gd->bd->bi_dram[0].size = get_ram_size((long *)PHYS_SDRAM_1,
	PHYS_SDRAM_1_SIZE);
	return 0;
	}

	static void setup_iomux_uart(void)
	{
	unsigned int pad = PAD_CTL_HYS_ENABLE \| PAD_CTL_PKE_ENABLE \|
	PAD_CTL_PUE_PULL \| PAD_CTL_DRV_HIGH;

	mxc_request_iomux(MX51_PIN_UART1_RXD, IOMUX_CONFIG_ALT0);
	mxc_iomux_set_pad(MX51_PIN_UART1_RXD, pad \| PAD_CTL_SRE_FAST);
	mxc_request_iomux(MX51_PIN_UART1_TXD, IOMUX_CONFIG_ALT0);
	mxc_iomux_set_pad(MX51_PIN_UART1_TXD, pad \| PAD_CTL_SRE_FAST);
	mxc_request_iomux(MX51_PIN_UART1_RTS, IOMUX_CONFIG_ALT0);
	mxc_iomux_set_pad(MX51_PIN_UART1_RTS, pad);
	mxc_request_iomux(MX51_PIN_UART1_CTS, IOMUX_CONFIG_ALT0);
	mxc_iomux_set_pad(MX51_PIN_UART1_CTS, pad);
	}

	static void setup_expio(void)
	{
	u32 reg;
	struct weim pweim = (struct weim )WEIM_BASE_ADDR;
	struct clkctl pclkctl = (struct clkctl )CCM_BASE_ADDR;

	/* CS5 setup */
	mxc_request_iomux(MX51_PIN_EIM_CS5, IOMUX_CONFIG_ALT0);
	writel(0x00410089, &pweim[5].csgcr1);
	writel(0x00000002, &pweim[5].csgcr2);

	/* RWSC=50, RADVA=2, RADVN=6, OEA=0, OEN=0, RCSA=0, RCSN=0 */
	writel(0x32260000, &pweim[5].csrcr1);

	/* APR = 0 */
	writel(0x00000000, &pweim[5].csrcr2);

	/*
	* WAL=0, WBED=1, WWSC=50, WADVA=2, WADVN=6, WEA=0, WEN=0,
	* WCSA=0, WCSN=0
	*/
	writel(0x72080F00, &pweim[5].cswcr1);

	mx51_io_board = (struct io_board_ctrl *)(CS5_BASE_ADDR +
	IO_BOARD_OFFSET);
	if ((readw(&mx51_io_board->id1) == 0xAAAA) &&
	(readw(&mx51_io_board->id2) == 0x5555)) {
	if (is_soc_rev(CHIP_REV_2_0) < 0) {
	reg = readl(&pclkctl->cbcdr);
	reg = (reg & (~0x70000)) \| 0x30000;
	writel(reg, &pclkctl->cbcdr);
	/* make sure divider effective */
	while (readl(&pclkctl->cdhipr) != 0)
	;
	writel(0x0, &pclkctl->ccdr);
	}
	} else {
	/* CS1 */
	writel(0x00410089, &pweim[1].csgcr1);
	writel(0x00000002, &pweim[1].csgcr2);
	/* RWSC=50, RADVA=2, RADVN=6, OEA=0, OEN=0, RCSA=0, RCSN=0 */
	writel(0x32260000, &pweim[1].csrcr1);
	/* APR=0 */
	writel(0x00000000, &pweim[1].csrcr2);
	/*
	* WAL=0, WBED=1, WWSC=50, WADVA=2, WADVN=6, WEA=0,
	* WEN=0, WCSA=0, WCSN=0
	*/
	writel(0x72080F00, &pweim[1].cswcr1);
	mx51_io_board = (struct io_board_ctrl *)(CS1_BASE_ADDR +
	IO_BOARD_OFFSET);
	}

	/* Reset interrupt status reg */
	writew(0x1F, &(mx51_io_board->int_rest));
	writew(0x00, &(mx51_io_board->int_rest));
	writew(0xFFFF, &(mx51_io_board->int_mask));

	/* Reset the XUART and Ethernet controllers */
	reg = readw(&(mx51_io_board->sw_reset));
	reg \|= 0x9;
	writew(reg, &(mx51_io_board->sw_reset));
	reg &= ~0x9;
	writew(reg, &(mx51_io_board->sw_reset));
	}

	static void setup_iomux_fec(void)
	{
	/FEC_MDIO/
	mxc_request_iomux(MX51_PIN_EIM_EB2 , IOMUX_CONFIG_ALT3);
	mxc_iomux_set_pad(MX51_PIN_EIM_EB2 , 0x1FD);

	/FEC_MDC/
	mxc_request_iomux(MX51_PIN_NANDF_CS3, IOMUX_CONFIG_ALT2);
	mxc_iomux_set_pad(MX51_PIN_NANDF_CS3, 0x2004);

	/* FEC RDATA[3] */
	mxc_request_iomux(MX51_PIN_EIM_CS3, IOMUX_CONFIG_ALT3);
	mxc_iomux_set_pad(MX51_PIN_EIM_CS3, 0x180);

	/* FEC RDATA[2] */
	mxc_request_iomux(MX51_PIN_EIM_CS2, IOMUX_CONFIG_ALT3);
	mxc_iomux_set_pad(MX51_PIN_EIM_CS2, 0x180);

	/* FEC RDATA[1] */
	mxc_request_iomux(MX51_PIN_EIM_EB3, IOMUX_CONFIG_ALT3);
	mxc_iomux_set_pad(MX51_PIN_EIM_EB3, 0x180);

	/* FEC RDATA[0] */
	mxc_request_iomux(MX51_PIN_NANDF_D9, IOMUX_CONFIG_ALT2);
	mxc_iomux_set_pad(MX51_PIN_NANDF_D9, 0x2180);

	/* FEC TDATA[3] */
	mxc_request_iomux(MX51_PIN_NANDF_CS6, IOMUX_CONFIG_ALT2);
	mxc_iomux_set_pad(MX51_PIN_NANDF_CS6, 0x2004);

	/* FEC TDATA[2] */
	mxc_request_iomux(MX51_PIN_NANDF_CS5, IOMUX_CONFIG_ALT2);
	mxc_iomux_set_pad(MX51_PIN_NANDF_CS5, 0x2004);

	/* FEC TDATA[1] */
	mxc_request_iomux(MX51_PIN_NANDF_CS4, IOMUX_CONFIG_ALT2);
	mxc_iomux_set_pad(MX51_PIN_NANDF_CS4, 0x2004);

	/* FEC TDATA[0] */
	mxc_request_iomux(MX51_PIN_NANDF_D8, IOMUX_CONFIG_ALT2);
	mxc_iomux_set_pad(MX51_PIN_NANDF_D8, 0x2004);

	/* FEC TX_EN */
	mxc_request_iomux(MX51_PIN_NANDF_CS7, IOMUX_CONFIG_ALT1);
	mxc_iomux_set_pad(MX51_PIN_NANDF_CS7, 0x2004);

	/* FEC TX_ER */
	mxc_request_iomux(MX51_PIN_NANDF_CS2, IOMUX_CONFIG_ALT2);
	mxc_iomux_set_pad(MX51_PIN_NANDF_CS2, 0x2004);

	/* FEC TX_CLK */
	mxc_request_iomux(MX51_PIN_NANDF_RDY_INT, IOMUX_CONFIG_ALT1);
	mxc_iomux_set_pad(MX51_PIN_NANDF_RDY_INT, 0x2180);

	/* FEC TX_COL */
	mxc_request_iomux(MX51_PIN_NANDF_RB2, IOMUX_CONFIG_ALT1);
	mxc_iomux_set_pad(MX51_PIN_NANDF_RB2, 0x2180);

	/* FEC RX_CLK */
	mxc_request_iomux(MX51_PIN_NANDF_RB3, IOMUX_CONFIG_ALT1);
	mxc_iomux_set_pad(MX51_PIN_NANDF_RB3, 0x2180);

	/* FEC RX_CRS */
	mxc_request_iomux(MX51_PIN_EIM_CS5, IOMUX_CONFIG_ALT3);
	mxc_iomux_set_pad(MX51_PIN_EIM_CS5, 0x180);

	/* FEC RX_ER */
	mxc_request_iomux(MX51_PIN_EIM_CS4, IOMUX_CONFIG_ALT3);
	mxc_iomux_set_pad(MX51_PIN_EIM_CS4, 0x180);

	/* FEC RX_DV */
	mxc_request_iomux(MX51_PIN_NANDF_D11, IOMUX_CONFIG_ALT2);
	mxc_iomux_set_pad(MX51_PIN_NANDF_D11, 0x2180);
	}

	#ifdef CONFIG_FSL_ESDHC
	int board_mmc_getcd(u8 cd, struct mmc mmc)
	{
	struct fsl_esdhc_cfg cfg = (struct fsl_esdhc_cfg )mmc->priv;

	if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
	*cd = readl(GPIO1_BASE_ADDR) & 0x01;
	else
	*cd = readl(GPIO1_BASE_ADDR) & 0x40;

	return 0;
	}

	int board_mmc_init(bd_t *bis)
	{
	u32 index;
	s32 status = 0;

	for (index = 0; index < CONFIG_SYS_FSL_ESDHC_NUM;
	index++) {
	switch (index) {
	case 0:
	mxc_request_iomux(MX51_PIN_SD1_CMD,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_request_iomux(MX51_PIN_SD1_CLK,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_request_iomux(MX51_PIN_SD1_DATA0,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_request_iomux(MX51_PIN_SD1_DATA1,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_request_iomux(MX51_PIN_SD1_DATA2,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_request_iomux(MX51_PIN_SD1_DATA3,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_iomux_set_pad(MX51_PIN_SD1_CMD,
	PAD_CTL_DRV_MAX \| PAD_CTL_DRV_VOT_HIGH \|
	PAD_CTL_HYS_ENABLE \| PAD_CTL_47K_PU \|
	PAD_CTL_PUE_PULL \|
	PAD_CTL_PKE_ENABLE \| PAD_CTL_SRE_FAST);
	mxc_iomux_set_pad(MX51_PIN_SD1_CLK,
	PAD_CTL_DRV_MAX \| PAD_CTL_DRV_VOT_HIGH \|
	PAD_CTL_HYS_NONE \| PAD_CTL_47K_PU \|
	PAD_CTL_PUE_PULL \|
	PAD_CTL_PKE_ENABLE \| PAD_CTL_SRE_FAST);
	mxc_iomux_set_pad(MX51_PIN_SD1_DATA0,
	PAD_CTL_DRV_MAX \| PAD_CTL_DRV_VOT_HIGH \|
	PAD_CTL_HYS_ENABLE \| PAD_CTL_47K_PU \|
	PAD_CTL_PUE_PULL \|
	PAD_CTL_PKE_ENABLE \| PAD_CTL_SRE_FAST);
	mxc_iomux_set_pad(MX51_PIN_SD1_DATA1,
	PAD_CTL_DRV_MAX \| PAD_CTL_DRV_VOT_HIGH \|
	PAD_CTL_HYS_ENABLE \| PAD_CTL_47K_PU \|
	PAD_CTL_PUE_PULL \|
	PAD_CTL_PKE_ENABLE \| PAD_CTL_SRE_FAST);
	mxc_iomux_set_pad(MX51_PIN_SD1_DATA2,
	PAD_CTL_DRV_MAX \| PAD_CTL_DRV_VOT_HIGH \|
	PAD_CTL_HYS_ENABLE \| PAD_CTL_47K_PU \|
	PAD_CTL_PUE_PULL \|
	PAD_CTL_PKE_ENABLE \| PAD_CTL_SRE_FAST);
	mxc_iomux_set_pad(MX51_PIN_SD1_DATA3,
	PAD_CTL_DRV_MAX \| PAD_CTL_DRV_VOT_HIGH \|
	PAD_CTL_HYS_ENABLE \| PAD_CTL_100K_PD \|
	PAD_CTL_PUE_PULL \|
	PAD_CTL_PKE_ENABLE \| PAD_CTL_SRE_FAST);
	mxc_request_iomux(MX51_PIN_GPIO1_0,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_iomux_set_pad(MX51_PIN_GPIO1_0,
	PAD_CTL_HYS_ENABLE);
	mxc_request_iomux(MX51_PIN_GPIO1_1,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_iomux_set_pad(MX51_PIN_GPIO1_1,
	PAD_CTL_HYS_ENABLE);
	break;
	case 1:
	mxc_request_iomux(MX51_PIN_SD2_CMD,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_request_iomux(MX51_PIN_SD2_CLK,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_request_iomux(MX51_PIN_SD2_DATA0,
	IOMUX_CONFIG_ALT0);
	mxc_request_iomux(MX51_PIN_SD2_DATA1,
	IOMUX_CONFIG_ALT0);
	mxc_request_iomux(MX51_PIN_SD2_DATA2,
	IOMUX_CONFIG_ALT0);
	mxc_request_iomux(MX51_PIN_SD2_DATA3,
	IOMUX_CONFIG_ALT0);
	mxc_iomux_set_pad(MX51_PIN_SD2_CMD,
	PAD_CTL_DRV_MAX \| PAD_CTL_22K_PU \|
	PAD_CTL_SRE_FAST);
	mxc_iomux_set_pad(MX51_PIN_SD2_CLK,
	PAD_CTL_DRV_MAX \| PAD_CTL_22K_PU \|
	PAD_CTL_SRE_FAST);
	mxc_iomux_set_pad(MX51_PIN_SD2_DATA0,
	PAD_CTL_DRV_MAX \| PAD_CTL_22K_PU \|
	PAD_CTL_SRE_FAST);
	mxc_iomux_set_pad(MX51_PIN_SD2_DATA1,
	PAD_CTL_DRV_MAX \| PAD_CTL_22K_PU \|
	PAD_CTL_SRE_FAST);
	mxc_iomux_set_pad(MX51_PIN_SD2_DATA2,
	PAD_CTL_DRV_MAX \| PAD_CTL_22K_PU \|
	PAD_CTL_SRE_FAST);
	mxc_iomux_set_pad(MX51_PIN_SD2_DATA3,
	PAD_CTL_DRV_MAX \| PAD_CTL_22K_PU \|
	PAD_CTL_SRE_FAST);
	mxc_request_iomux(MX51_PIN_SD2_CMD,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_request_iomux(MX51_PIN_GPIO1_6,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_iomux_set_pad(MX51_PIN_GPIO1_6,
	PAD_CTL_HYS_ENABLE);
	mxc_request_iomux(MX51_PIN_GPIO1_5,
	IOMUX_CONFIG_ALT0 \| IOMUX_CONFIG_SION);
	mxc_iomux_set_pad(MX51_PIN_GPIO1_5,
	PAD_CTL_HYS_ENABLE);
	break;
	default:
	printf("Warning: you configured more ESDHC controller"
	"(%d) as supported by the board(2)\n",
	CONFIG_SYS_FSL_ESDHC_NUM);
	return status;
	}
	status \|= fsl_esdhc_initialize(bis, &esdhc_cfg[index]);
	}
	return status;
	}
	#endif

	int board_init(void)
	{
	system_rev = get_cpu_rev();

	gd->bd->bi_arch_number = MACH_TYPE_MX51_BABBAGE;
	/* address of boot parameters */
	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;

	setup_iomux_uart();
	setup_expio();
	setup_iomux_fec();
	return 0;
	}

	int checkboard(void)
	{
	puts("Board: MX51EVK ");

	switch (system_rev & 0xff) {
	case CHIP_REV_3_0:
	puts("3.0 [");
	break;
	case CHIP_REV_2_5:
	puts("2.5 [");
	break;
	case CHIP_REV_2_0:
	puts("2.0 [");
	break;
	case CHIP_REV_1_1:
	puts("1.1 [");
	break;
	case CHIP_REV_1_0:
	default:
	puts("1.0 [");
	break;
	}

	switch (__raw_readl(SRC_BASE_ADDR + 0x8)) {
	case 0x0001:
	puts("POR");
	break;
	case 0x0009:
	puts("RST");
	break;
	case 0x0010:
	case 0x0011:
	puts("WDOG");
	break;
	default:
	puts("unknown");
	}
	puts("]\n");
	return 0;
	}