board/freescale/mpc837xemds/mpc837xemds.c - platform/external/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2007,2010 Freescale Semiconductor, Inc.
  * Dave Liu <daveliu@freescale.com>
  */

 #include <common.h>
 #include <hwconfig.h>
 #include <i2c.h>
 #include <init.h>
 #include <net.h>
 #include <asm/bitops.h>
 #include <asm/io.h>
 #include <asm/fsl_mpc83xx_serdes.h>
 #include <spd_sdram.h>
 #include <tsec.h>
 #include <linux/delay.h>
 #include <linux/libfdt.h>
 #include <fdt_support.h>
 #include <fsl_esdhc.h>
 #include <fsl_mdio.h>
 #include <phy.h>
 #include "pci.h"
 #include "../common/pq-mds-pib.h"

 DECLARE_GLOBAL_DATA_PTR;

 int board_early_init_f(void)
 {
 	u8 *bcsr = (u8 *)CONFIG_SYS_BCSR;

 	/* Enable flash write */
 	bcsr[0x9] &= ~0x04;
 	/* Clear all of the interrupt of BCSR */
 	bcsr[0xe] = 0xff;

 #ifdef CONFIG_FSL_SERDES
 	immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 	u32 spridr = in_be32(&immr->sysconf.spridr);

 	/* we check only part num, and don't look for CPU revisions */
 	switch (PARTID_NO_E(spridr)) {
 	case SPR_8377:
 		fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_SATA,
 				FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
 		break;
 	case SPR_8378:
 		fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_SGMII,
 				FSL_SERDES_CLK_125, FSL_SERDES_VDD_1V);
 		break;
 	case SPR_8379:
 		fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_SATA,
 				FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
 		fsl_setup_serdes(CONFIG_FSL_SERDES2, FSL_SERDES_PROTO_SATA,
 				FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
 		break;
 	default:
 		printf("serdes not configured: unknown CPU part number: "
 				"%04x\n", spridr >> 16);
 		break;
 	}
 #endif /* CONFIG_FSL_SERDES */
 	return 0;
 }

 #ifdef CONFIG_FSL_ESDHC
 int board_mmc_init(struct bd_info *bd)
 {
 	struct immap __iomem *im = (struct immap __iomem *)CONFIG_SYS_IMMR;
 	u8 *bcsr = (u8 *)CONFIG_SYS_BCSR;

 	if (!hwconfig("esdhc"))
 		return 0;

 	/* Set SPI_SD, SER_SD, and IRQ4_WP so that SD signals go through */
 	bcsr[0xc] |= 0x4c;

 	/* Set proper bits in SICR to allow SD signals through */
 	clrsetbits_be32(&im->sysconf.sicrl, SICRL_USB_B, SICRL_USB_B_SD);
 	clrsetbits_be32(&im->sysconf.sicrh, SICRH_GPIO2_E | SICRH_SPI,
 			SICRH_GPIO2_E_SD | SICRH_SPI_SD);

 	return fsl_esdhc_mmc_init(bd);
 }
 #endif

 #if defined(CONFIG_TSEC1) || defined(CONFIG_TSEC2)
 int board_eth_init(struct bd_info *bd)
 {
 	struct fsl_pq_mdio_info mdio_info;
 	struct tsec_info_struct tsec_info[2];
 	struct immap __iomem *im = (struct immap __iomem *)CONFIG_SYS_IMMR;
 	u32 rcwh = in_be32(&im->reset.rcwh);
 	u32 tsec_mode;
 	int num = 0;

 	/* New line after Net: */
 	printf("\n");

 #ifdef CONFIG_TSEC1
 	SET_STD_TSEC_INFO(tsec_info[num], 1);

 	printf(CONFIG_TSEC1_NAME ": ");

 	tsec_mode = rcwh & HRCWH_TSEC1M_MASK;
 	if (tsec_mode == HRCWH_TSEC1M_IN_RGMII) {
 		printf("RGMII\n");
 		/* this is default, no need to fixup */
 	} else if (tsec_mode == HRCWH_TSEC1M_IN_SGMII) {
 		printf("SGMII\n");
 		tsec_info[num].phyaddr = TSEC1_PHY_ADDR_SGMII;
 		tsec_info[num].flags = TSEC_GIGABIT;
 	} else {
 		printf("unsupported PHY type\n");
 	}
 	num++;
 #endif
 #ifdef CONFIG_TSEC2
 	SET_STD_TSEC_INFO(tsec_info[num], 2);

 	printf(CONFIG_TSEC2_NAME ": ");

 	tsec_mode = rcwh & HRCWH_TSEC2M_MASK;
 	if (tsec_mode == HRCWH_TSEC2M_IN_RGMII) {
 		printf("RGMII\n");
 		/* this is default, no need to fixup */
 	} else if (tsec_mode == HRCWH_TSEC2M_IN_SGMII) {
 		printf("SGMII\n");
 		tsec_info[num].phyaddr = TSEC2_PHY_ADDR_SGMII;
 		tsec_info[num].flags = TSEC_GIGABIT;
 	} else {
 		printf("unsupported PHY type\n");
 	}
 	num++;
 #endif

 	mdio_info.regs = (struct tsec_mii_mng *)CONFIG_SYS_MDIO_BASE_ADDR;
 	mdio_info.name = DEFAULT_MII_NAME;
 	fsl_pq_mdio_init(bd, &mdio_info);

 	return tsec_eth_init(bd, tsec_info, num);
 }

 static void __ft_tsec_fixup(void *blob, struct bd_info *bd, const char *alias,
 			    int phy_addr)
 {
 	const u32 *ph;
 	int off;
 	int err;

 	off = fdt_path_offset(blob, alias);
 	if (off < 0) {
 		printf("WARNING: could not find %s alias: %s.\n", alias,
 			fdt_strerror(off));
 		return;
 	}

 	err = fdt_fixup_phy_connection(blob, off, PHY_INTERFACE_MODE_SGMII);

 	if (err) {
 		printf("WARNING: could not set phy-connection-type for %s: "
 			"%s.\n", alias, fdt_strerror(err));
 		return;
 	}

 	ph = (u32 *)fdt_getprop(blob, off, "phy-handle", 0);
 	if (!ph) {
 		printf("WARNING: could not get phy-handle for %s.\n",
 			alias);
 		return;
 	}

 	off = fdt_node_offset_by_phandle(blob, *ph);
 	if (off < 0) {
 		printf("WARNING: could not get phy node for %s: %s\n", alias,
 			fdt_strerror(off));
 		return;
 	}

 	phy_addr = cpu_to_fdt32(phy_addr);
 	err = fdt_setprop(blob, off, "reg", &phy_addr, sizeof(phy_addr));
 	if (err < 0) {
 		printf("WARNING: could not set phy node's reg for %s: "
 			"%s.\n", alias, fdt_strerror(err));
 		return;
 	}
 }

 static void ft_tsec_fixup(void *blob, struct bd_info *bd)
 {
 	struct immap __iomem *im = (struct immap __iomem *)CONFIG_SYS_IMMR;
 	u32 rcwh = in_be32(&im->reset.rcwh);
 	u32 tsec_mode;

 #ifdef CONFIG_TSEC1
 	tsec_mode = rcwh & HRCWH_TSEC1M_MASK;
 	if (tsec_mode == HRCWH_TSEC1M_IN_SGMII)
 		__ft_tsec_fixup(blob, bd, "ethernet0", TSEC1_PHY_ADDR_SGMII);
 #endif

 #ifdef CONFIG_TSEC2
 	tsec_mode = rcwh & HRCWH_TSEC2M_MASK;
 	if (tsec_mode == HRCWH_TSEC2M_IN_SGMII)
 		__ft_tsec_fixup(blob, bd, "ethernet1", TSEC2_PHY_ADDR_SGMII);
 #endif
 }
 #else
 static inline void ft_tsec_fixup(void *blob, struct bd_info *bd) {}
 #endif /* defined(CONFIG_TSEC1) || defined(CONFIG_TSEC2) */

 int board_early_init_r(void)
 {
 #ifdef CONFIG_PQ_MDS_PIB
 	pib_init();
 #endif
 	return 0;
 }

 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 extern void ddr_enable_ecc(unsigned int dram_size);
 #endif
 int fixed_sdram(void);

 int dram_init(void)
 {
 	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
 	u32 msize = 0;

 	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
 		return -ENXIO;

 #if defined(CONFIG_SPD_EEPROM)
 	msize = spd_sdram();
 #else
 	msize = fixed_sdram();
 #endif

 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 	/* Initialize DDR ECC byte */
 	ddr_enable_ecc(msize * 1024 * 1024);
 #endif

 	/* return total bus DDR size(bytes) */
 	gd->ram_size = msize * 1024 * 1024;

 	return 0;
 }

 #if !defined(CONFIG_SPD_EEPROM)
 /*************************************************************************
  *  fixed sdram init -- doesn't use serial presence detect.
  ************************************************************************/
 int fixed_sdram(void)
 {
 	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
 	u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024;
 	u32 msize_log2 = __ilog2(msize);

 	im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & 0xfffff000;
 	im->sysconf.ddrlaw[0].ar = LBLAWAR_EN | (msize_log2 - 1);

 #if (CONFIG_SYS_DDR_SIZE != 512)
 #warning Currenly any ddr size other than 512 is not supported
 #endif
 	im->sysconf.ddrcdr = CONFIG_SYS_DDRCDR_VALUE;
 	udelay(50000);

 	im->ddr.sdram_clk_cntl = CONFIG_SYS_DDR_SDRAM_CLK_CNTL;
 	udelay(1000);

 	im->ddr.csbnds[0].csbnds = CONFIG_SYS_DDR_CS0_BNDS;
 	im->ddr.cs_config[0] = CONFIG_SYS_DDR_CS0_CONFIG;
 	udelay(1000);

 	im->ddr.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
 	im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
 	im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
 	im->ddr.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
 	im->ddr.sdram_cfg = CONFIG_SYS_DDR_SDRAM_CFG;
 	im->ddr.sdram_cfg2 = CONFIG_SYS_DDR_SDRAM_CFG2;
 	im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;
 	im->ddr.sdram_mode2 = CONFIG_SYS_DDR_MODE2;
 	im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
 	__asm__ __volatile__("sync");
 	udelay(1000);

 	im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
 	udelay(2000);
 	return CONFIG_SYS_DDR_SIZE;
 }
 #endif /*!CONFIG_SYS_SPD_EEPROM */

 int checkboard(void)
 {
 	puts("Board: Freescale MPC837xEMDS\n");
 	return 0;
 }

 #ifdef CONFIG_PCI
 int board_pci_host_broken(void)
 {
 	struct immap __iomem *im = (struct immap __iomem *)CONFIG_SYS_IMMR;
 	const u32 rcw_mask = HRCWH_PCI1_ARBITER_ENABLE | HRCWH_PCI_HOST;

 	/* It's always OK in case of external arbiter. */
 	if (hwconfig_subarg_cmp("pci", "arbiter", "external"))
 		return 0;

 	if ((in_be32(&im->reset.rcwh) & rcw_mask) != rcw_mask)
 		return 1;

 	return 0;
 }

 static void ft_pci_fixup(void *blob, struct bd_info *bd)
 {
 	const char *status = "broken (no arbiter)";
 	int off;
 	int err;

 	off = fdt_path_offset(blob, "pci0");
 	if (off < 0) {
 		printf("WARNING: could not find pci0 alias: %s.\n",
 			fdt_strerror(off));
 		return;
 	}

 	err = fdt_setprop(blob, off, "status", status, strlen(status) + 1);
 	if (err) {
 		printf("WARNING: could not set status for pci0: %s.\n",
 			fdt_strerror(err));
 		return;
 	}
 }
 #endif

 #if defined(CONFIG_OF_BOARD_SETUP)
 int ft_board_setup(void *blob, struct bd_info *bd)
 {
 	ft_cpu_setup(blob, bd);
 	ft_tsec_fixup(blob, bd);
 	fsl_fdt_fixup_dr_usb(blob, bd);
 	fdt_fixup_esdhc(blob, bd);
 #ifdef CONFIG_PCI
 	ft_pci_setup(blob, bd);
 	if (board_pci_host_broken())
 		ft_pci_fixup(blob, bd);
 	ft_pcie_fixup(blob, bd);
 #endif

 	return 0;
 }
 #endif /* CONFIG_OF_BOARD_SETUP */
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright (C) 2007,2010 Freescale Semiconductor, Inc.
	* Dave Liu <daveliu@freescale.com>
	*/

	#include <common.h>
	#include <hwconfig.h>
	#include <i2c.h>
	#include <init.h>
	#include <net.h>
	#include <asm/bitops.h>
	#include <asm/io.h>
	#include <asm/fsl_mpc83xx_serdes.h>
	#include <spd_sdram.h>
	#include <tsec.h>
	#include <linux/delay.h>
	#include <linux/libfdt.h>
	#include <fdt_support.h>
	#include <fsl_esdhc.h>
	#include <fsl_mdio.h>
	#include <phy.h>
	#include "pci.h"
	#include "../common/pq-mds-pib.h"

	DECLARE_GLOBAL_DATA_PTR;

	int board_early_init_f(void)
	{
	u8 bcsr = (u8 )CONFIG_SYS_BCSR;

	/* Enable flash write */
	bcsr[0x9] &= ~0x04;
	/* Clear all of the interrupt of BCSR */
	bcsr[0xe] = 0xff;

	#ifdef CONFIG_FSL_SERDES
	immap_t immr = (immap_t )CONFIG_SYS_IMMR;
	u32 spridr = in_be32(&immr->sysconf.spridr);

	/* we check only part num, and don't look for CPU revisions */
	switch (PARTID_NO_E(spridr)) {
	case SPR_8377:
	fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_SATA,
	FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
	break;
	case SPR_8378:
	fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_SGMII,
	FSL_SERDES_CLK_125, FSL_SERDES_VDD_1V);
	break;
	case SPR_8379:
	fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_SATA,
	FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
	fsl_setup_serdes(CONFIG_FSL_SERDES2, FSL_SERDES_PROTO_SATA,
	FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
	break;
	default:
	printf("serdes not configured: unknown CPU part number: "
	"%04x\n", spridr >> 16);
	break;
	}
	#endif /* CONFIG_FSL_SERDES */
	return 0;
	}

	#ifdef CONFIG_FSL_ESDHC
	int board_mmc_init(struct bd_info *bd)
	{
	struct immap __iomem im = (struct immap __iomem )CONFIG_SYS_IMMR;
	u8 bcsr = (u8 )CONFIG_SYS_BCSR;

	if (!hwconfig("esdhc"))
	return 0;

	/* Set SPI_SD, SER_SD, and IRQ4_WP so that SD signals go through */
	bcsr[0xc] \|= 0x4c;

	/* Set proper bits in SICR to allow SD signals through */
	clrsetbits_be32(&im->sysconf.sicrl, SICRL_USB_B, SICRL_USB_B_SD);
	clrsetbits_be32(&im->sysconf.sicrh, SICRH_GPIO2_E \| SICRH_SPI,
	SICRH_GPIO2_E_SD \| SICRH_SPI_SD);

	return fsl_esdhc_mmc_init(bd);
	}
	#endif

	#if defined(CONFIG_TSEC1) \|\| defined(CONFIG_TSEC2)
	int board_eth_init(struct bd_info *bd)
	{
	struct fsl_pq_mdio_info mdio_info;
	struct tsec_info_struct tsec_info[2];
	struct immap __iomem im = (struct immap __iomem )CONFIG_SYS_IMMR;
	u32 rcwh = in_be32(&im->reset.rcwh);
	u32 tsec_mode;
	int num = 0;

	/* New line after Net: */
	printf("\n");

	#ifdef CONFIG_TSEC1
	SET_STD_TSEC_INFO(tsec_info[num], 1);

	printf(CONFIG_TSEC1_NAME ": ");

	tsec_mode = rcwh & HRCWH_TSEC1M_MASK;
	if (tsec_mode == HRCWH_TSEC1M_IN_RGMII) {
	printf("RGMII\n");
	/* this is default, no need to fixup */
	} else if (tsec_mode == HRCWH_TSEC1M_IN_SGMII) {
	printf("SGMII\n");
	tsec_info[num].phyaddr = TSEC1_PHY_ADDR_SGMII;
	tsec_info[num].flags = TSEC_GIGABIT;
	} else {
	printf("unsupported PHY type\n");
	}
	num++;
	#endif
	#ifdef CONFIG_TSEC2
	SET_STD_TSEC_INFO(tsec_info[num], 2);

	printf(CONFIG_TSEC2_NAME ": ");

	tsec_mode = rcwh & HRCWH_TSEC2M_MASK;
	if (tsec_mode == HRCWH_TSEC2M_IN_RGMII) {
	printf("RGMII\n");
	/* this is default, no need to fixup */
	} else if (tsec_mode == HRCWH_TSEC2M_IN_SGMII) {
	printf("SGMII\n");
	tsec_info[num].phyaddr = TSEC2_PHY_ADDR_SGMII;
	tsec_info[num].flags = TSEC_GIGABIT;
	} else {
	printf("unsupported PHY type\n");
	}
	num++;
	#endif

	mdio_info.regs = (struct tsec_mii_mng *)CONFIG_SYS_MDIO_BASE_ADDR;
	mdio_info.name = DEFAULT_MII_NAME;
	fsl_pq_mdio_init(bd, &mdio_info);

	return tsec_eth_init(bd, tsec_info, num);
	}

	static void __ft_tsec_fixup(void blob, struct bd_info bd, const char *alias,
	int phy_addr)
	{
	const u32 *ph;
	int off;
	int err;

	off = fdt_path_offset(blob, alias);
	if (off < 0) {
	printf("WARNING: could not find %s alias: %s.\n", alias,
	fdt_strerror(off));
	return;
	}

	err = fdt_fixup_phy_connection(blob, off, PHY_INTERFACE_MODE_SGMII);

	if (err) {
	printf("WARNING: could not set phy-connection-type for %s: "
	"%s.\n", alias, fdt_strerror(err));
	return;
	}

	ph = (u32 *)fdt_getprop(blob, off, "phy-handle", 0);
	if (!ph) {
	printf("WARNING: could not get phy-handle for %s.\n",
	alias);
	return;
	}

	off = fdt_node_offset_by_phandle(blob, *ph);
	if (off < 0) {
	printf("WARNING: could not get phy node for %s: %s\n", alias,
	fdt_strerror(off));
	return;
	}

	phy_addr = cpu_to_fdt32(phy_addr);
	err = fdt_setprop(blob, off, "reg", &phy_addr, sizeof(phy_addr));
	if (err < 0) {
	printf("WARNING: could not set phy node's reg for %s: "
	"%s.\n", alias, fdt_strerror(err));
	return;
	}
	}

	static void ft_tsec_fixup(void blob, struct bd_info bd)
	{
	struct immap __iomem im = (struct immap __iomem )CONFIG_SYS_IMMR;
	u32 rcwh = in_be32(&im->reset.rcwh);
	u32 tsec_mode;

	#ifdef CONFIG_TSEC1
	tsec_mode = rcwh & HRCWH_TSEC1M_MASK;
	if (tsec_mode == HRCWH_TSEC1M_IN_SGMII)
	__ft_tsec_fixup(blob, bd, "ethernet0", TSEC1_PHY_ADDR_SGMII);
	#endif

	#ifdef CONFIG_TSEC2
	tsec_mode = rcwh & HRCWH_TSEC2M_MASK;
	if (tsec_mode == HRCWH_TSEC2M_IN_SGMII)
	__ft_tsec_fixup(blob, bd, "ethernet1", TSEC2_PHY_ADDR_SGMII);
	#endif
	}
	#else
	static inline void ft_tsec_fixup(void blob, struct bd_info bd) {}
	#endif /* defined(CONFIG_TSEC1) \|\| defined(CONFIG_TSEC2) */

	int board_early_init_r(void)
	{
	#ifdef CONFIG_PQ_MDS_PIB
	pib_init();
	#endif
	return 0;
	}

	#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
	extern void ddr_enable_ecc(unsigned int dram_size);
	#endif
	int fixed_sdram(void);

	int dram_init(void)
	{
	volatile immap_t im = (immap_t ) CONFIG_SYS_IMMR;
	u32 msize = 0;

	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
	return -ENXIO;

	#if defined(CONFIG_SPD_EEPROM)
	msize = spd_sdram();
	#else
	msize = fixed_sdram();
	#endif

	#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
	/* Initialize DDR ECC byte */
	ddr_enable_ecc(msize * 1024 * 1024);
	#endif

	/* return total bus DDR size(bytes) */
	gd->ram_size = msize * 1024 * 1024;

	return 0;
	}

	#if !defined(CONFIG_SPD_EEPROM)
	/*************************************************************************
	* fixed sdram init -- doesn't use serial presence detect.
	************************************************************************/
	int fixed_sdram(void)
	{
	volatile immap_t im = (immap_t ) CONFIG_SYS_IMMR;
	u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024;
	u32 msize_log2 = __ilog2(msize);

	im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & 0xfffff000;
	im->sysconf.ddrlaw[0].ar = LBLAWAR_EN \| (msize_log2 - 1);

	#if (CONFIG_SYS_DDR_SIZE != 512)
	#warning Currenly any ddr size other than 512 is not supported
	#endif
	im->sysconf.ddrcdr = CONFIG_SYS_DDRCDR_VALUE;
	udelay(50000);

	im->ddr.sdram_clk_cntl = CONFIG_SYS_DDR_SDRAM_CLK_CNTL;
	udelay(1000);

	im->ddr.csbnds[0].csbnds = CONFIG_SYS_DDR_CS0_BNDS;
	im->ddr.cs_config[0] = CONFIG_SYS_DDR_CS0_CONFIG;
	udelay(1000);

	im->ddr.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
	im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
	im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
	im->ddr.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
	im->ddr.sdram_cfg = CONFIG_SYS_DDR_SDRAM_CFG;
	im->ddr.sdram_cfg2 = CONFIG_SYS_DDR_SDRAM_CFG2;
	im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;
	im->ddr.sdram_mode2 = CONFIG_SYS_DDR_MODE2;
	im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
	__asm__ __volatile__("sync");
	udelay(1000);

	im->ddr.sdram_cfg \|= SDRAM_CFG_MEM_EN;
	udelay(2000);
	return CONFIG_SYS_DDR_SIZE;
	}
	#endif /!CONFIG_SYS_SPD_EEPROM /

	int checkboard(void)
	{
	puts("Board: Freescale MPC837xEMDS\n");
	return 0;
	}

	#ifdef CONFIG_PCI
	int board_pci_host_broken(void)
	{
	struct immap __iomem im = (struct immap __iomem )CONFIG_SYS_IMMR;
	const u32 rcw_mask = HRCWH_PCI1_ARBITER_ENABLE \| HRCWH_PCI_HOST;

	/* It's always OK in case of external arbiter. */
	if (hwconfig_subarg_cmp("pci", "arbiter", "external"))
	return 0;

	if ((in_be32(&im->reset.rcwh) & rcw_mask) != rcw_mask)
	return 1;

	return 0;
	}

	static void ft_pci_fixup(void blob, struct bd_info bd)
	{
	const char *status = "broken (no arbiter)";
	int off;
	int err;

	off = fdt_path_offset(blob, "pci0");
	if (off < 0) {
	printf("WARNING: could not find pci0 alias: %s.\n",
	fdt_strerror(off));
	return;
	}

	err = fdt_setprop(blob, off, "status", status, strlen(status) + 1);
	if (err) {
	printf("WARNING: could not set status for pci0: %s.\n",
	fdt_strerror(err));
	return;
	}
	}
	#endif

	#if defined(CONFIG_OF_BOARD_SETUP)
	int ft_board_setup(void blob, struct bd_info bd)
	{
	ft_cpu_setup(blob, bd);
	ft_tsec_fixup(blob, bd);
	fsl_fdt_fixup_dr_usb(blob, bd);
	fdt_fixup_esdhc(blob, bd);
	#ifdef CONFIG_PCI
	ft_pci_setup(blob, bd);
	if (board_pci_host_broken())
	ft_pci_fixup(blob, bd);
	ft_pcie_fixup(blob, bd);
	#endif

	return 0;
	}
	#endif /* CONFIG_OF_BOARD_SETUP */