board/freescale/t102xrdb/t102xrdb.c - filogic/uboot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2014 Freescale Semiconductor, Inc.
  * Copyright 2020 NXP
  */

 #include <common.h>
 #include <command.h>
 #include <env.h>
 #include <fdt_support.h>
 #include <i2c.h>
 #include <image.h>
 #include <init.h>
 #include <netdev.h>
 #include <asm/global_data.h>
 #include <linux/compiler.h>
 #include <asm/mmu.h>
 #include <asm/processor.h>
 #include <asm/immap_85xx.h>
 #include <asm/fsl_law.h>
 #include <asm/fsl_serdes.h>
 #include <asm/fsl_liodn.h>
 #include <fm_eth.h>
 #include "t102xrdb.h"
 #ifdef CONFIG_TARGET_T1024RDB
 #include "cpld.h"
 #elif defined(CONFIG_TARGET_T1023RDB)
 #include <i2c.h>
 #include <mmc.h>
 #endif
 #include "../common/sleep.h"

 DECLARE_GLOBAL_DATA_PTR;

 #ifdef CONFIG_TARGET_T1023RDB
 enum {
 	GPIO1_SD_SEL    = 0x00020000, /* GPIO1_14, 0: eMMC, 1:SD/MMC */
 	GPIO1_EMMC_SEL,
 	GPIO3_GET_VERSION,	       /* GPIO3_4/5, 00:RevB, 01: RevC */
 	GPIO3_BRD_VER_MASK = 0x0c000000,
 	GPIO3_OFFSET = 0x2000,
 	I2C_GET_BANK,
 	I2C_SET_BANK0,
 	I2C_SET_BANK4,
 };
 #endif

 int checkboard(void)
 {
 	struct cpu_type *cpu = gd->arch.cpu;
 	static const char *freq[3] = {"100.00MHZ", "125.00MHz", "156.25MHZ"};
 	ccsr_gur_t __iomem *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 	u32 srds_s1;

 	srds_s1 = in_be32(&gur->rcwsr[4]) & FSL_CORENET2_RCWSR4_SRDS1_PRTCL;
 	srds_s1 >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;

 	printf("Board: %sRDB, ", cpu->name);
 #if defined(CONFIG_TARGET_T1024RDB)
 	printf("Board rev: 0x%02x CPLD ver: 0x%02x, ",
 	       CPLD_READ(hw_ver), CPLD_READ(sw_ver));
 #elif defined(CONFIG_TARGET_T1023RDB)
 	printf("Rev%c, ", t1023rdb_ctrl(GPIO3_GET_VERSION) + 'B');
 #endif
 	printf("boot from ");

 #ifdef CONFIG_SDCARD
 	puts("SD/MMC\n");
 #elif CONFIG_SPIFLASH
 	puts("SPI\n");
 #elif defined(CONFIG_TARGET_T1024RDB)
 	u8 reg;

 	reg = CPLD_READ(flash_csr);

 	if (reg & CPLD_BOOT_SEL) {
 		puts("NAND\n");
 	} else {
 		reg = ((reg & CPLD_LBMAP_MASK) >> CPLD_LBMAP_SHIFT);
 		printf("NOR vBank%d\n", reg);
 	}
 #elif defined(CONFIG_TARGET_T1023RDB)
 #ifdef CONFIG_MTD_RAW_NAND
 	puts("NAND\n");
 #else
 	printf("NOR vBank%d\n", t1023rdb_ctrl(I2C_GET_BANK));
 #endif
 #endif

 	puts("SERDES Reference Clocks:\n");
 	if (srds_s1 == 0x95)
 		printf("SD1_CLK1=%s, SD1_CLK2=%s\n", freq[2], freq[0]);
 	else
 		printf("SD1_CLK1=%s, SD1_CLK2=%s\n", freq[0], freq[1]);

 	return 0;
 }

 #ifdef CONFIG_TARGET_T1024RDB
 static void board_mux_lane(void)
 {
 	ccsr_gur_t __iomem *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 	u32 srds_prtcl_s1;
 	u8 reg = CPLD_READ(misc_ctl_status);

 	srds_prtcl_s1 = in_be32(&gur->rcwsr[4]) &
 				FSL_CORENET2_RCWSR4_SRDS1_PRTCL;
 	srds_prtcl_s1 >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;

 	if (srds_prtcl_s1 == 0x95) {
 		/* Route Lane B to PCIE */
 		CPLD_WRITE(misc_ctl_status, reg & ~CPLD_PCIE_SGMII_MUX);
 	} else {
 		/* Route Lane B to SGMII */
 		CPLD_WRITE(misc_ctl_status, reg | CPLD_PCIE_SGMII_MUX);
 	}
 	CPLD_WRITE(boot_override, CPLD_OVERRIDE_MUX_EN);
 }
 #endif

 int board_early_init_f(void)
 {
 #if defined(CONFIG_DEEP_SLEEP)
 	if (is_warm_boot())
 		fsl_dp_disable_console();
 #endif

 	return 0;
 }

 int board_early_init_r(void)
 {
 #ifdef CONFIG_SYS_FLASH_BASE
 	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
 	int flash_esel = find_tlb_idx((void *)flashbase, 1);
 	/*
 	 * Remap Boot flash region to caching-inhibited
 	 * so that flash can be erased properly.
 	 */

 	/* Flush d-cache and invalidate i-cache of any FLASH data */
 	flush_dcache();
 	invalidate_icache();
 	if (flash_esel == -1) {
 		/* very unlikely unless something is messed up */
 		puts("Error: Could not find TLB for FLASH BASE\n");
 		flash_esel = 2;	/* give our best effort to continue */
 	} else {
 		/* invalidate existing TLB entry for flash + promjet */
 		disable_tlb(flash_esel);
 	}

 	set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
 		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		0, flash_esel, BOOKE_PAGESZ_256M, 1);
 #endif

 #ifdef CONFIG_TARGET_T1024RDB
 	board_mux_lane();
 #endif

 	return 0;
 }

 #ifdef CONFIG_TARGET_T1024RDB
 void board_reset(void)
 {
 	CPLD_WRITE(reset_ctl1, CPLD_LBMAP_RESET);
 }
 #endif

 int misc_init_r(void)
 {
 	return 0;
 }

 int ft_board_setup(void *blob, struct bd_info *bd)
 {
 	phys_addr_t base;
 	phys_size_t size;

 	ft_cpu_setup(blob, bd);

 	base = env_get_bootm_low();
 	size = env_get_bootm_size();

 	fdt_fixup_memory(blob, (u64)base, (u64)size);

 #ifdef CONFIG_PCI
 	pci_of_setup(blob, bd);
 #endif

 	fdt_fixup_liodn(blob);
 	fsl_fdt_fixup_dr_usb(blob, bd);

 #ifdef CONFIG_SYS_DPAA_FMAN
 #ifndef CONFIG_DM_ETH
 	fdt_fixup_fman_ethernet(blob);
 #endif
 	fdt_fixup_board_enet(blob);
 #endif

 #ifdef CONFIG_TARGET_T1023RDB
 	if (t1023rdb_ctrl(GPIO3_GET_VERSION) > 0)
 		fdt_enable_nor(blob);
 #endif

 	return 0;
 }

 #ifdef CONFIG_TARGET_T1023RDB
 /* Enable NOR flash for RevC */
 static void fdt_enable_nor(void *blob)
 {
 	int nodeoff = fdt_node_offset_by_compatible(blob, 0, "cfi-flash");

 	if (nodeoff >= 0)
 		fdt_status_okay(blob, nodeoff);
 	else
 		printf("WARNING unable to set status for NOR\n");
 }

 int board_mmc_getcd(struct mmc *mmc)
 {
 	ccsr_gpio_t __iomem *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
 	u32 val = in_be32(&pgpio->gpdat);

 	/* GPIO1_14, 0: eMMC, 1: SD/MMC */
 	val &= GPIO1_SD_SEL;

 	return val ? -1 : 1;
 }

 int board_mmc_getwp(struct mmc *mmc)
 {
 	ccsr_gpio_t __iomem *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
 	u32 val = in_be32(&pgpio->gpdat);

 	val &= GPIO1_SD_SEL;

 	return val ? -1 : 0;
 }

 static u32 t1023rdb_ctrl(u32 ctrl_type)
 {
 	ccsr_gpio_t __iomem *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
 	ccsr_gur_t __iomem  *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 	u32 val;
 	u8 tmp;
 	int bus_num = I2C_PCA6408_BUS_NUM;

 #if CONFIG_IS_ENABLED(DM_I2C)
 	struct udevice *dev;
 	int ret;

 	ret = i2c_get_chip_for_busnum(bus_num, I2C_PCA6408_ADDR,
 				      1, &dev);
 	if (ret) {
 		printf("%s: Cannot find udev for a bus %d\n", __func__,
 		       bus_num);
 		return ret;
 	}
 	switch (ctrl_type) {
 	case GPIO1_SD_SEL:
 		val = in_be32(&pgpio->gpdat);
 		val |= GPIO1_SD_SEL;
 		out_be32(&pgpio->gpdat, val);
 		setbits_be32(&pgpio->gpdir, GPIO1_SD_SEL);
 		break;
 	case GPIO1_EMMC_SEL:
 		val = in_be32(&pgpio->gpdat);
 		val &= ~GPIO1_SD_SEL;
 		out_be32(&pgpio->gpdat, val);
 		setbits_be32(&pgpio->gpdir, GPIO1_SD_SEL);
 		break;
 	case GPIO3_GET_VERSION:
 		pgpio = (ccsr_gpio_t *)(CONFIG_SYS_MPC85xx_GPIO_ADDR
 			 + GPIO3_OFFSET);
 		val = in_be32(&pgpio->gpdat);
 		val = ((val & GPIO3_BRD_VER_MASK) >> 26) & 0x3;
 		if (val == 0x3) /* GPIO3_4/5 not used on RevB */
 			val = 0;
 		return val;
 	case I2C_GET_BANK:
 		dm_i2c_read(dev, 0, &tmp, 1);
 		tmp &= 0x7;
 		tmp = ((tmp & 1) << 2) | (tmp & 2) | ((tmp & 4) >> 2);
 		return tmp;
 	case I2C_SET_BANK0:
 		tmp = 0x0;
 		dm_i2c_write(dev, 1, &tmp, 1);
 		tmp = 0xf8;
 		dm_i2c_write(dev, 3, &tmp, 1);
 		/* asserting HRESET_REQ */
 		out_be32(&gur->rstcr, 0x2);
 		break;
 	case I2C_SET_BANK4:
 		tmp = 0x1;
 		dm_i2c_write(dev, 1, &tmp, 1);
 		tmp = 0xf8;
 		dm_i2c_write(dev, 3, &tmp, 1);
 		out_be32(&gur->rstcr, 0x2);
 		break;
 	default:
 		break;
 	}
 #else
 	u32 orig_bus;

 	orig_bus = i2c_get_bus_num();

 	switch (ctrl_type) {
 	case GPIO1_SD_SEL:
 		val = in_be32(&pgpio->gpdat);
 		val |= GPIO1_SD_SEL;
 		out_be32(&pgpio->gpdat, val);
 		setbits_be32(&pgpio->gpdir, GPIO1_SD_SEL);
 		break;
 	case GPIO1_EMMC_SEL:
 		val = in_be32(&pgpio->gpdat);
 		val &= ~GPIO1_SD_SEL;
 		out_be32(&pgpio->gpdat, val);
 		setbits_be32(&pgpio->gpdir, GPIO1_SD_SEL);
 		break;
 	case GPIO3_GET_VERSION:
 		pgpio = (ccsr_gpio_t *)(CONFIG_SYS_MPC85xx_GPIO_ADDR
 			 + GPIO3_OFFSET);
 		val = in_be32(&pgpio->gpdat);
 		val = ((val & GPIO3_BRD_VER_MASK) >> 26) & 0x3;
 		if (val == 0x3) /* GPIO3_4/5 not used on RevB */
 			val = 0;
 		return val;
 	case I2C_GET_BANK:
 		i2c_set_bus_num(bus_num);
 		i2c_read(I2C_PCA6408_ADDR, 0, 1, &tmp, 1);
 		tmp &= 0x7;
 		tmp = ((tmp & 1) << 2) | (tmp & 2) | ((tmp & 4) >> 2);
 		i2c_set_bus_num(orig_bus);
 		return tmp;
 	case I2C_SET_BANK0:
 		i2c_set_bus_num(bus_num);
 		tmp = 0x0;
 		i2c_write(I2C_PCA6408_ADDR, 1, 1, &tmp, 1);
 		tmp = 0xf8;
 		i2c_write(I2C_PCA6408_ADDR, 3, 1, &tmp, 1);
 		/* asserting HRESET_REQ */
 		out_be32(&gur->rstcr, 0x2);
 		break;
 	case I2C_SET_BANK4:
 		i2c_set_bus_num(bus_num);
 		tmp = 0x1;
 		i2c_write(I2C_PCA6408_ADDR, 1, 1, &tmp, 1);
 		tmp = 0xf8;
 		i2c_write(I2C_PCA6408_ADDR, 3, 1, &tmp, 1);
 		out_be32(&gur->rstcr, 0x2);
 		break;
 	default:
 		break;
 	}
 #endif
 	return 0;
 }

 static int switch_cmd(struct cmd_tbl *cmdtp, int flag, int argc,
 		      char *const argv[])
 {
 	if (argc < 2)
 		return CMD_RET_USAGE;
 	if (!strcmp(argv[1], "bank0"))
 		t1023rdb_ctrl(I2C_SET_BANK0);
 	else if (!strcmp(argv[1], "bank4") || !strcmp(argv[1], "altbank"))
 		t1023rdb_ctrl(I2C_SET_BANK4);
 	else if (!strcmp(argv[1], "sd"))
 		t1023rdb_ctrl(GPIO1_SD_SEL);
 	else if (!strcmp(argv[1], "emmc"))
 		t1023rdb_ctrl(GPIO1_EMMC_SEL);
 	else
 		return CMD_RET_USAGE;
 	return 0;
 }

 U_BOOT_CMD(
 	switch, 2, 0, switch_cmd,
 	"for bank0/bank4/sd/emmc switch control in runtime",
 	"command (e.g. switch bank4)"
 );
 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright 2014 Freescale Semiconductor, Inc.
	* Copyright 2020 NXP
	*/

	#include <common.h>
	#include <command.h>
	#include <env.h>
	#include <fdt_support.h>
	#include <i2c.h>
	#include <image.h>
	#include <init.h>
	#include <netdev.h>
	#include <asm/global_data.h>
	#include <linux/compiler.h>
	#include <asm/mmu.h>
	#include <asm/processor.h>
	#include <asm/immap_85xx.h>
	#include <asm/fsl_law.h>
	#include <asm/fsl_serdes.h>
	#include <asm/fsl_liodn.h>
	#include <fm_eth.h>
	#include "t102xrdb.h"
	#ifdef CONFIG_TARGET_T1024RDB
	#include "cpld.h"
	#elif defined(CONFIG_TARGET_T1023RDB)
	#include <i2c.h>
	#include <mmc.h>
	#endif
	#include "../common/sleep.h"

	DECLARE_GLOBAL_DATA_PTR;

	#ifdef CONFIG_TARGET_T1023RDB
	enum {
	GPIO1_SD_SEL = 0x00020000, /* GPIO1_14, 0: eMMC, 1:SD/MMC */
	GPIO1_EMMC_SEL,
	GPIO3_GET_VERSION, /* GPIO3_4/5, 00:RevB, 01: RevC */
	GPIO3_BRD_VER_MASK = 0x0c000000,
	GPIO3_OFFSET = 0x2000,
	I2C_GET_BANK,
	I2C_SET_BANK0,
	I2C_SET_BANK4,
	};
	#endif

	int checkboard(void)
	{
	struct cpu_type *cpu = gd->arch.cpu;
	static const char *freq[3] = {"100.00MHZ", "125.00MHz", "156.25MHZ"};
	ccsr_gur_t __iomem gur = (void )(CONFIG_SYS_MPC85xx_GUTS_ADDR);
	u32 srds_s1;

	srds_s1 = in_be32(&gur->rcwsr[4]) & FSL_CORENET2_RCWSR4_SRDS1_PRTCL;
	srds_s1 >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;

	printf("Board: %sRDB, ", cpu->name);
	#if defined(CONFIG_TARGET_T1024RDB)
	printf("Board rev: 0x%02x CPLD ver: 0x%02x, ",
	CPLD_READ(hw_ver), CPLD_READ(sw_ver));
	#elif defined(CONFIG_TARGET_T1023RDB)
	printf("Rev%c, ", t1023rdb_ctrl(GPIO3_GET_VERSION) + 'B');
	#endif
	printf("boot from ");

	#ifdef CONFIG_SDCARD
	puts("SD/MMC\n");
	#elif CONFIG_SPIFLASH
	puts("SPI\n");
	#elif defined(CONFIG_TARGET_T1024RDB)
	u8 reg;

	reg = CPLD_READ(flash_csr);

	if (reg & CPLD_BOOT_SEL) {
	puts("NAND\n");
	} else {
	reg = ((reg & CPLD_LBMAP_MASK) >> CPLD_LBMAP_SHIFT);
	printf("NOR vBank%d\n", reg);
	}
	#elif defined(CONFIG_TARGET_T1023RDB)
	#ifdef CONFIG_MTD_RAW_NAND
	puts("NAND\n");
	#else
	printf("NOR vBank%d\n", t1023rdb_ctrl(I2C_GET_BANK));
	#endif
	#endif

	puts("SERDES Reference Clocks:\n");
	if (srds_s1 == 0x95)
	printf("SD1_CLK1=%s, SD1_CLK2=%s\n", freq[2], freq[0]);
	else
	printf("SD1_CLK1=%s, SD1_CLK2=%s\n", freq[0], freq[1]);

	return 0;
	}

	#ifdef CONFIG_TARGET_T1024RDB
	static void board_mux_lane(void)
	{
	ccsr_gur_t __iomem gur = (void )(CONFIG_SYS_MPC85xx_GUTS_ADDR);
	u32 srds_prtcl_s1;
	u8 reg = CPLD_READ(misc_ctl_status);

	srds_prtcl_s1 = in_be32(&gur->rcwsr[4]) &
	FSL_CORENET2_RCWSR4_SRDS1_PRTCL;
	srds_prtcl_s1 >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;

	if (srds_prtcl_s1 == 0x95) {
	/* Route Lane B to PCIE */
	CPLD_WRITE(misc_ctl_status, reg & ~CPLD_PCIE_SGMII_MUX);
	} else {
	/* Route Lane B to SGMII */
	CPLD_WRITE(misc_ctl_status, reg \| CPLD_PCIE_SGMII_MUX);
	}
	CPLD_WRITE(boot_override, CPLD_OVERRIDE_MUX_EN);
	}
	#endif

	int board_early_init_f(void)
	{
	#if defined(CONFIG_DEEP_SLEEP)
	if (is_warm_boot())
	fsl_dp_disable_console();
	#endif

	return 0;
	}

	int board_early_init_r(void)
	{
	#ifdef CONFIG_SYS_FLASH_BASE
	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
	int flash_esel = find_tlb_idx((void *)flashbase, 1);
	/*
	* Remap Boot flash region to caching-inhibited
	* so that flash can be erased properly.
	*/

	/* Flush d-cache and invalidate i-cache of any FLASH data */
	flush_dcache();
	invalidate_icache();
	if (flash_esel == -1) {
	/* very unlikely unless something is messed up */
	puts("Error: Could not find TLB for FLASH BASE\n");
	flash_esel = 2; /* give our best effort to continue */
	} else {
	/* invalidate existing TLB entry for flash + promjet */
	disable_tlb(flash_esel);
	}

	set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
	MAS3_SX\|MAS3_SW\|MAS3_SR, MAS2_I\|MAS2_G,
	0, flash_esel, BOOKE_PAGESZ_256M, 1);
	#endif

	#ifdef CONFIG_TARGET_T1024RDB
	board_mux_lane();
	#endif

	return 0;
	}

	#ifdef CONFIG_TARGET_T1024RDB
	void board_reset(void)
	{
	CPLD_WRITE(reset_ctl1, CPLD_LBMAP_RESET);
	}
	#endif

	int misc_init_r(void)
	{
	return 0;
	}

	int ft_board_setup(void blob, struct bd_info bd)
	{
	phys_addr_t base;
	phys_size_t size;

	ft_cpu_setup(blob, bd);

	base = env_get_bootm_low();
	size = env_get_bootm_size();

	fdt_fixup_memory(blob, (u64)base, (u64)size);

	#ifdef CONFIG_PCI
	pci_of_setup(blob, bd);
	#endif

	fdt_fixup_liodn(blob);
	fsl_fdt_fixup_dr_usb(blob, bd);

	#ifdef CONFIG_SYS_DPAA_FMAN
	#ifndef CONFIG_DM_ETH
	fdt_fixup_fman_ethernet(blob);
	#endif
	fdt_fixup_board_enet(blob);
	#endif

	#ifdef CONFIG_TARGET_T1023RDB
	if (t1023rdb_ctrl(GPIO3_GET_VERSION) > 0)
	fdt_enable_nor(blob);
	#endif

	return 0;
	}

	#ifdef CONFIG_TARGET_T1023RDB
	/* Enable NOR flash for RevC */
	static void fdt_enable_nor(void *blob)
	{
	int nodeoff = fdt_node_offset_by_compatible(blob, 0, "cfi-flash");

	if (nodeoff >= 0)
	fdt_status_okay(blob, nodeoff);
	else
	printf("WARNING unable to set status for NOR\n");
	}

	int board_mmc_getcd(struct mmc *mmc)
	{
	ccsr_gpio_t __iomem pgpio = (void )(CONFIG_SYS_MPC85xx_GPIO_ADDR);
	u32 val = in_be32(&pgpio->gpdat);

	/* GPIO1_14, 0: eMMC, 1: SD/MMC */
	val &= GPIO1_SD_SEL;

	return val ? -1 : 1;
	}

	int board_mmc_getwp(struct mmc *mmc)
	{
	ccsr_gpio_t __iomem pgpio = (void )(CONFIG_SYS_MPC85xx_GPIO_ADDR);
	u32 val = in_be32(&pgpio->gpdat);

	val &= GPIO1_SD_SEL;

	return val ? -1 : 0;
	}

	static u32 t1023rdb_ctrl(u32 ctrl_type)
	{
	ccsr_gpio_t __iomem pgpio = (void )(CONFIG_SYS_MPC85xx_GPIO_ADDR);
	ccsr_gur_t __iomem gur = (void )(CONFIG_SYS_MPC85xx_GUTS_ADDR);
	u32 val;
	u8 tmp;
	int bus_num = I2C_PCA6408_BUS_NUM;

	#if CONFIG_IS_ENABLED(DM_I2C)
	struct udevice *dev;
	int ret;

	ret = i2c_get_chip_for_busnum(bus_num, I2C_PCA6408_ADDR,
	1, &dev);
	if (ret) {
	printf("%s: Cannot find udev for a bus %d\n", __func__,
	bus_num);
	return ret;
	}
	switch (ctrl_type) {
	case GPIO1_SD_SEL:
	val = in_be32(&pgpio->gpdat);
	val \|= GPIO1_SD_SEL;
	out_be32(&pgpio->gpdat, val);
	setbits_be32(&pgpio->gpdir, GPIO1_SD_SEL);
	break;
	case GPIO1_EMMC_SEL:
	val = in_be32(&pgpio->gpdat);
	val &= ~GPIO1_SD_SEL;
	out_be32(&pgpio->gpdat, val);
	setbits_be32(&pgpio->gpdir, GPIO1_SD_SEL);
	break;
	case GPIO3_GET_VERSION:
	pgpio = (ccsr_gpio_t *)(CONFIG_SYS_MPC85xx_GPIO_ADDR
	+ GPIO3_OFFSET);
	val = in_be32(&pgpio->gpdat);
	val = ((val & GPIO3_BRD_VER_MASK) >> 26) & 0x3;
	if (val == 0x3) /* GPIO3_4/5 not used on RevB */
	val = 0;
	return val;
	case I2C_GET_BANK:
	dm_i2c_read(dev, 0, &tmp, 1);
	tmp &= 0x7;
	tmp = ((tmp & 1) << 2) \| (tmp & 2) \| ((tmp & 4) >> 2);
	return tmp;
	case I2C_SET_BANK0:
	tmp = 0x0;
	dm_i2c_write(dev, 1, &tmp, 1);
	tmp = 0xf8;
	dm_i2c_write(dev, 3, &tmp, 1);
	/* asserting HRESET_REQ */
	out_be32(&gur->rstcr, 0x2);
	break;
	case I2C_SET_BANK4:
	tmp = 0x1;
	dm_i2c_write(dev, 1, &tmp, 1);
	tmp = 0xf8;
	dm_i2c_write(dev, 3, &tmp, 1);
	out_be32(&gur->rstcr, 0x2);
	break;
	default:
	break;
	}
	#else
	u32 orig_bus;

	orig_bus = i2c_get_bus_num();

	switch (ctrl_type) {
	case GPIO1_SD_SEL:
	val = in_be32(&pgpio->gpdat);
	val \|= GPIO1_SD_SEL;
	out_be32(&pgpio->gpdat, val);
	setbits_be32(&pgpio->gpdir, GPIO1_SD_SEL);
	break;
	case GPIO1_EMMC_SEL:
	val = in_be32(&pgpio->gpdat);
	val &= ~GPIO1_SD_SEL;
	out_be32(&pgpio->gpdat, val);
	setbits_be32(&pgpio->gpdir, GPIO1_SD_SEL);
	break;
	case GPIO3_GET_VERSION:
	pgpio = (ccsr_gpio_t *)(CONFIG_SYS_MPC85xx_GPIO_ADDR
	+ GPIO3_OFFSET);
	val = in_be32(&pgpio->gpdat);
	val = ((val & GPIO3_BRD_VER_MASK) >> 26) & 0x3;
	if (val == 0x3) /* GPIO3_4/5 not used on RevB */
	val = 0;
	return val;
	case I2C_GET_BANK:
	i2c_set_bus_num(bus_num);
	i2c_read(I2C_PCA6408_ADDR, 0, 1, &tmp, 1);
	tmp &= 0x7;
	tmp = ((tmp & 1) << 2) \| (tmp & 2) \| ((tmp & 4) >> 2);
	i2c_set_bus_num(orig_bus);
	return tmp;
	case I2C_SET_BANK0:
	i2c_set_bus_num(bus_num);
	tmp = 0x0;
	i2c_write(I2C_PCA6408_ADDR, 1, 1, &tmp, 1);
	tmp = 0xf8;
	i2c_write(I2C_PCA6408_ADDR, 3, 1, &tmp, 1);
	/* asserting HRESET_REQ */
	out_be32(&gur->rstcr, 0x2);
	break;
	case I2C_SET_BANK4:
	i2c_set_bus_num(bus_num);
	tmp = 0x1;
	i2c_write(I2C_PCA6408_ADDR, 1, 1, &tmp, 1);
	tmp = 0xf8;
	i2c_write(I2C_PCA6408_ADDR, 3, 1, &tmp, 1);
	out_be32(&gur->rstcr, 0x2);
	break;
	default:
	break;
	}
	#endif
	return 0;
	}

	static int switch_cmd(struct cmd_tbl *cmdtp, int flag, int argc,
	char *const argv[])
	{
	if (argc < 2)
	return CMD_RET_USAGE;
	if (!strcmp(argv[1], "bank0"))
	t1023rdb_ctrl(I2C_SET_BANK0);
	else if (!strcmp(argv[1], "bank4") \|\| !strcmp(argv[1], "altbank"))
	t1023rdb_ctrl(I2C_SET_BANK4);
	else if (!strcmp(argv[1], "sd"))
	t1023rdb_ctrl(GPIO1_SD_SEL);
	else if (!strcmp(argv[1], "emmc"))
	t1023rdb_ctrl(GPIO1_EMMC_SEL);
	else
	return CMD_RET_USAGE;
	return 0;
	}

	U_BOOT_CMD(
	switch, 2, 0, switch_cmd,
	"for bank0/bank4/sd/emmc switch control in runtime",
	"command (e.g. switch bank4)"
	);
	#endif