board/gdsys/405ex/io64.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2010
  * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
  *
  * based on kilauea.c
  * by Stefan Roese, DENX Software Engineering, sr@denx.de.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #include <common.h>
 #include <asm/ppc4xx.h>
 #include <asm/ppc405.h>
 #include <libfdt.h>
 #include <fdt_support.h>
 #include <asm/processor.h>
 #include <asm/io.h>
 #include <asm/errno.h>
 #include <asm/ppc4xx-gpio.h>
 #include <flash.h>

 #include <pca9698.h>

 #include "405ex.h"
 #include <gdsys_fpga.h>

 #include <miiphy.h>
 #include <i2c.h>
 #include <dtt.h>

 DECLARE_GLOBAL_DATA_PTR;

 #define PHYREG_CONTROL				0
 #define PHYREG_PAGE_ADDRESS			22
 #define PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1	16
 #define PHYREG_PG2_COPPER_SPECIFIC_CONTROL_2	26
 #define PHYREG_PG2_MAC_SPECIFIC_STATUS_1	17
 #define PHYREG_PG2_MAC_SPECIFIC_CONTROL		21

 #define LATCH0_BASE (CONFIG_SYS_LATCH_BASE)
 #define LATCH1_BASE (CONFIG_SYS_LATCH_BASE + 0x100)
 #define LATCH2_BASE (CONFIG_SYS_LATCH_BASE + 0x200)
 #define LATCH3_BASE (CONFIG_SYS_LATCH_BASE + 0x300)

 enum {
 	UNITTYPE_CCD_SWITCH = 1,
 };

 enum {
 	HWVER_100 = 0,
 	HWVER_110 = 1,
 };

 struct ihs_fpga *fpga_ptr[] = CONFIG_SYS_FPGA_PTR;

 static inline void blank_string(int size)
 {
 	int i;

 	for (i = 0; i < size; i++)
 		putc('\b');
 	for (i = 0; i < size; i++)
 		putc(' ');
 	for (i = 0; i < size; i++)
 		putc('\b');
 }

 /*
  * Board early initialization function
  */
 int misc_init_r(void)
 {
 	/* startup fans */
 	dtt_init();

 #ifdef CONFIG_ENV_IS_IN_FLASH
 	/* Monitor protection ON by default */
 	flash_protect(FLAG_PROTECT_SET,
 		      -CONFIG_SYS_MONITOR_LEN,
 		      0xffffffff,
 		      &flash_info[0]);
 #endif

 	return 0;
 }

 static void print_fpga_info(unsigned dev)
 {
 	u16 versions;
 	u16 fpga_version;
 	u16 fpga_features;
 	int fpga_state = get_fpga_state(dev);

 	unsigned unit_type;
 	unsigned hardware_version;
 	unsigned feature_channels;
 	unsigned feature_expansion;

 	FPGA_GET_REG(dev, versions, &versions);
 	FPGA_GET_REG(dev, fpga_version, &fpga_version);
 	FPGA_GET_REG(dev, fpga_features, &fpga_features);

 	printf("FPGA%d: ", dev);
 	if (fpga_state & FPGA_STATE_PLATFORM)
 		printf("(legacy) ");

 	if (fpga_state & FPGA_STATE_DONE_FAILED) {
 		printf(" done timed out\n");
 		return;
 	}

 	if (fpga_state & FPGA_STATE_REFLECTION_FAILED) {
 		printf(" refelectione test failed\n");
 		return;
 	}

 	unit_type = (versions & 0xf000) >> 12;
 	hardware_version = versions & 0x000f;
 	feature_channels = fpga_features & 0x007f;
 	feature_expansion = fpga_features & (1<<15);

 	switch (unit_type) {
 	case UNITTYPE_CCD_SWITCH:
 		printf("CCD-Switch");
 		break;

 	default:
 		printf("UnitType %d(not supported)", unit_type);
 		break;
 	}

 	switch (hardware_version) {
 	case HWVER_100:
 		printf(" HW-Ver 1.00\n");
 		break;

 	case HWVER_110:
 		printf(" HW-Ver 1.10\n");
 		break;

 	default:
 		printf(" HW-Ver %d(not supported)\n",
 		       hardware_version);
 		break;
 	}

 	printf("       FPGA V %d.%02d, features:",
 		fpga_version / 100, fpga_version % 100);

 	printf(" %d channel(s)", feature_channels);

 	printf(", expansion %ssupported\n", feature_expansion ? "" : "un");
 }

 int checkboard(void)
 {
 	char *s = getenv("serial#");

 	printf("Board: CATCenter Io64\n");

 	if (s != NULL) {
 		puts(", serial# ");
 		puts(s);
 	}

 	return 0;
 }

 int configure_gbit_phy(char *bus, unsigned char addr)
 {
 	unsigned short value;

 	/* select page 0 */
 	if (miiphy_write(bus, addr, PHYREG_PAGE_ADDRESS, 0x0000))
 		goto err_out;
 	/* switch to powerdown */
 	if (miiphy_read(bus, addr, PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1,
 		&value))
 		goto err_out;
 	if (miiphy_write(bus, addr, PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1,
 		value | 0x0004))
 		goto err_out;
 	/* select page 2 */
 	if (miiphy_write(bus, addr, PHYREG_PAGE_ADDRESS, 0x0002))
 		goto err_out;
 	/* disable SGMII autonegotiation */
 	if (miiphy_write(bus, addr, PHYREG_PG2_MAC_SPECIFIC_CONTROL, 48))
 		goto err_out;
 	/* select page 0 */
 	if (miiphy_write(bus, addr, PHYREG_PAGE_ADDRESS, 0x0000))
 		goto err_out;
 	/* switch from powerdown to normal operation */
 	if (miiphy_read(bus, addr, PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1,
 		&value))
 		goto err_out;
 	if (miiphy_write(bus, addr, PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1,
 		value & ~0x0004))
 		goto err_out;
 	/* reset phy so settings take effect */
 	if (miiphy_write(bus, addr, PHYREG_CONTROL, 0x9140))
 		goto err_out;

 	return 0;

 err_out:
 	printf("Error writing to the PHY addr=%02x\n", addr);
 	return -1;
 }

 int verify_gbit_phy(char *bus, unsigned char addr)
 {
 	unsigned short value;

 	/* select page 2 */
 	if (miiphy_write(bus, addr, PHYREG_PAGE_ADDRESS, 0x0002))
 		goto err_out;
 	/* verify SGMII link status */
 	if (miiphy_read(bus, addr, PHYREG_PG2_MAC_SPECIFIC_STATUS_1, &value))
 		goto err_out;
 	if (!(value & (1 << 10)))
 		return -2;

 	return 0;

 err_out:
 	printf("Error writing to the PHY addr=%02x\n", addr);
 	return -1;
 }

 int last_stage_init(void)
 {
 	unsigned int k;
 	unsigned int fpga;
 	int failed = 0;
 	char str_phys[] = "Setup PHYs -";
 	char str_serdes[] = "Start SERDES blocks";
 	char str_channels[] = "Start FPGA channels";
 	char str_locks[] = "Verify SERDES locks";
 	char str_hicb[] = "Verify HICB status";
 	char str_status[] = "Verify PHY status -";
 	char slash[] = "\\|/-\\|/-";

 	print_fpga_info(0);
 	print_fpga_info(1);

 	/* setup Gbit PHYs */
 	puts("TRANS: ");
 	puts(str_phys);
 	miiphy_register(CONFIG_SYS_GBIT_MII_BUSNAME,
 		bb_miiphy_read, bb_miiphy_write);

 	for (k = 0; k < 32; ++k) {
 		configure_gbit_phy(CONFIG_SYS_GBIT_MII_BUSNAME, k);
 		putc('\b');
 		putc(slash[k % 8]);
 	}

 	miiphy_register(CONFIG_SYS_GBIT_MII1_BUSNAME,
 		bb_miiphy_read, bb_miiphy_write);

 	for (k = 0; k < 32; ++k) {
 		configure_gbit_phy(CONFIG_SYS_GBIT_MII1_BUSNAME, k);
 		putc('\b');
 		putc(slash[k % 8]);
 	}
 	blank_string(strlen(str_phys));

 	/* take fpga serdes blocks out of reset */
 	puts(str_serdes);
 	udelay(500000);
 	FPGA_SET_REG(0, quad_serdes_reset, 0);
 	FPGA_SET_REG(1, quad_serdes_reset, 0);
 	blank_string(strlen(str_serdes));

 	/* take channels out of reset */
 	puts(str_channels);
 	udelay(500000);
 	for (fpga = 0; fpga < 2; ++fpga) {
 		for (k = 0; k < 32; ++k)
 			FPGA_SET_REG(fpga, ch[k].config_int, 0);
 	}
 	blank_string(strlen(str_channels));

 	/* verify channels serdes lock */
 	puts(str_locks);
 	udelay(500000);
 	for (fpga = 0; fpga < 2; ++fpga) {
 		for (k = 0; k < 32; ++k) {
 			u16 status;
 			FPGA_GET_REG(fpga, ch[k].status_int, &status);
 			if (!(status & (1 << 4))) {
 				failed = 1;
 				printf("fpga %d channel %d: no serdes lock\n",
 					fpga, k);
 			}
 			/* reset events */
 			FPGA_SET_REG(fpga, ch[k].status_int, 0);
 		}
 	}
 	blank_string(strlen(str_locks));

 	/* verify hicb_status */
 	puts(str_hicb);
 	for (fpga = 0; fpga < 2; ++fpga) {
 		for (k = 0; k < 32; ++k) {
 			u16 status;
 			FPGA_GET_REG(fpga, hicb_ch[k].status_int, &status);
 			if (status)
 				printf("fpga %d hicb %d: hicb status %04x\n",
 					fpga, k, status);
 			/* reset events */
 			FPGA_SET_REG(fpga, hicb_ch[k].status_int, 0);
 		}
 	}
 	blank_string(strlen(str_hicb));

 	/* verify phy status */
 	puts(str_status);
 	for (k = 0; k < 32; ++k) {
 		if (verify_gbit_phy(CONFIG_SYS_GBIT_MII_BUSNAME, k)) {
 			printf("verify baseboard phy %d failed\n", k);
 			failed = 1;
 		}
 		putc('\b');
 		putc(slash[k % 8]);
 	}
 	for (k = 0; k < 32; ++k) {
 		if (verify_gbit_phy(CONFIG_SYS_GBIT_MII1_BUSNAME, k)) {
 			printf("verify extensionboard phy %d failed\n", k);
 			failed = 1;
 		}
 		putc('\b');
 		putc(slash[k % 8]);
 	}
 	blank_string(strlen(str_status));

 	printf("Starting 64 channels %s\n", failed ? "failed" : "ok");

 	return 0;
 }

 void gd405ex_init(void)
 {
 	unsigned int k;

 	if (i2c_probe(0x22)) { /* i2c_probe returns 0 on success */
 		for (k = 0; k < CONFIG_SYS_FPGA_COUNT; ++k)
 			gd->arch.fpga_state[k] |= FPGA_STATE_PLATFORM;
 	} else {
 		pca9698_direction_output(0x22, 39, 1);
 	}
 }

 void gd405ex_set_fpga_reset(unsigned state)
 {
 	int legacy = get_fpga_state(0) & FPGA_STATE_PLATFORM;

 	if (legacy) {
 		if (state) {
 			out_le16((void *)LATCH0_BASE, CONFIG_SYS_LATCH0_RESET);
 			out_le16((void *)LATCH1_BASE, CONFIG_SYS_LATCH1_RESET);
 		} else {
 			out_le16((void *)LATCH0_BASE, CONFIG_SYS_LATCH0_BOOT);
 			out_le16((void *)LATCH1_BASE, CONFIG_SYS_LATCH1_BOOT);
 		}
 	} else {
 		pca9698_set_value(0x22, 39, state ? 0 : 1);
 	}
 }

 void gd405ex_setup_hw(void)
 {
 	gpio_write_bit(CONFIG_SYS_GPIO_STARTUP_FINISHED_N, 0);
 	gpio_write_bit(CONFIG_SYS_GPIO_STARTUP_FINISHED, 1);
 }

 int gd405ex_get_fpga_done(unsigned fpga)
 {
 	int legacy = get_fpga_state(0) & FPGA_STATE_PLATFORM;

 	if (legacy)
 		return in_le16((void *)LATCH3_BASE)
 			& CONFIG_SYS_FPGA_DONE(fpga);
 	else
 		return pca9698_get_value(0x22, fpga ? 9 : 8);
 }
	/*
	* (C) Copyright 2010
	* Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
	*
	* based on kilauea.c
	* by Stefan Roese, DENX Software Engineering, sr@denx.de.
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#include <common.h>
	#include <asm/ppc4xx.h>
	#include <asm/ppc405.h>
	#include <libfdt.h>
	#include <fdt_support.h>
	#include <asm/processor.h>
	#include <asm/io.h>
	#include <asm/errno.h>
	#include <asm/ppc4xx-gpio.h>
	#include <flash.h>

	#include <pca9698.h>

	#include "405ex.h"
	#include <gdsys_fpga.h>

	#include <miiphy.h>
	#include <i2c.h>
	#include <dtt.h>

	DECLARE_GLOBAL_DATA_PTR;

	#define PHYREG_CONTROL 0
	#define PHYREG_PAGE_ADDRESS 22
	#define PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1 16
	#define PHYREG_PG2_COPPER_SPECIFIC_CONTROL_2 26
	#define PHYREG_PG2_MAC_SPECIFIC_STATUS_1 17
	#define PHYREG_PG2_MAC_SPECIFIC_CONTROL 21

	#define LATCH0_BASE (CONFIG_SYS_LATCH_BASE)
	#define LATCH1_BASE (CONFIG_SYS_LATCH_BASE + 0x100)
	#define LATCH2_BASE (CONFIG_SYS_LATCH_BASE + 0x200)
	#define LATCH3_BASE (CONFIG_SYS_LATCH_BASE + 0x300)

	enum {
	UNITTYPE_CCD_SWITCH = 1,
	};

	enum {
	HWVER_100 = 0,
	HWVER_110 = 1,
	};

	struct ihs_fpga *fpga_ptr[] = CONFIG_SYS_FPGA_PTR;

	static inline void blank_string(int size)
	{
	int i;

	for (i = 0; i < size; i++)
	putc('\b');
	for (i = 0; i < size; i++)
	putc(' ');
	for (i = 0; i < size; i++)
	putc('\b');
	}

	/*
	* Board early initialization function
	*/
	int misc_init_r(void)
	{
	/* startup fans */
	dtt_init();

	#ifdef CONFIG_ENV_IS_IN_FLASH
	/* Monitor protection ON by default */
	flash_protect(FLAG_PROTECT_SET,
	-CONFIG_SYS_MONITOR_LEN,
	0xffffffff,
	&flash_info[0]);
	#endif

	return 0;
	}

	static void print_fpga_info(unsigned dev)
	{
	u16 versions;
	u16 fpga_version;
	u16 fpga_features;
	int fpga_state = get_fpga_state(dev);

	unsigned unit_type;
	unsigned hardware_version;
	unsigned feature_channels;
	unsigned feature_expansion;

	FPGA_GET_REG(dev, versions, &versions);
	FPGA_GET_REG(dev, fpga_version, &fpga_version);
	FPGA_GET_REG(dev, fpga_features, &fpga_features);

	printf("FPGA%d: ", dev);
	if (fpga_state & FPGA_STATE_PLATFORM)
	printf("(legacy) ");

	if (fpga_state & FPGA_STATE_DONE_FAILED) {
	printf(" done timed out\n");
	return;
	}

	if (fpga_state & FPGA_STATE_REFLECTION_FAILED) {
	printf(" refelectione test failed\n");
	return;
	}

	unit_type = (versions & 0xf000) >> 12;
	hardware_version = versions & 0x000f;
	feature_channels = fpga_features & 0x007f;
	feature_expansion = fpga_features & (1<<15);

	switch (unit_type) {
	case UNITTYPE_CCD_SWITCH:
	printf("CCD-Switch");
	break;

	default:
	printf("UnitType %d(not supported)", unit_type);
	break;
	}

	switch (hardware_version) {
	case HWVER_100:
	printf(" HW-Ver 1.00\n");
	break;

	case HWVER_110:
	printf(" HW-Ver 1.10\n");
	break;

	default:
	printf(" HW-Ver %d(not supported)\n",
	hardware_version);
	break;
	}

	printf(" FPGA V %d.%02d, features:",
	fpga_version / 100, fpga_version % 100);

	printf(" %d channel(s)", feature_channels);

	printf(", expansion %ssupported\n", feature_expansion ? "" : "un");
	}

	int checkboard(void)
	{
	char *s = getenv("serial#");

	printf("Board: CATCenter Io64\n");

	if (s != NULL) {
	puts(", serial# ");
	puts(s);
	}

	return 0;
	}

	int configure_gbit_phy(char *bus, unsigned char addr)
	{
	unsigned short value;

	/* select page 0 */
	if (miiphy_write(bus, addr, PHYREG_PAGE_ADDRESS, 0x0000))
	goto err_out;
	/* switch to powerdown */
	if (miiphy_read(bus, addr, PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1,
	&value))
	goto err_out;
	if (miiphy_write(bus, addr, PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1,
	value \| 0x0004))
	goto err_out;
	/* select page 2 */
	if (miiphy_write(bus, addr, PHYREG_PAGE_ADDRESS, 0x0002))
	goto err_out;
	/* disable SGMII autonegotiation */
	if (miiphy_write(bus, addr, PHYREG_PG2_MAC_SPECIFIC_CONTROL, 48))
	goto err_out;
	/* select page 0 */
	if (miiphy_write(bus, addr, PHYREG_PAGE_ADDRESS, 0x0000))
	goto err_out;
	/* switch from powerdown to normal operation */
	if (miiphy_read(bus, addr, PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1,
	&value))
	goto err_out;
	if (miiphy_write(bus, addr, PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1,
	value & ~0x0004))
	goto err_out;
	/* reset phy so settings take effect */
	if (miiphy_write(bus, addr, PHYREG_CONTROL, 0x9140))
	goto err_out;

	return 0;

	err_out:
	printf("Error writing to the PHY addr=%02x\n", addr);
	return -1;
	}

	int verify_gbit_phy(char *bus, unsigned char addr)
	{
	unsigned short value;

	/* select page 2 */
	if (miiphy_write(bus, addr, PHYREG_PAGE_ADDRESS, 0x0002))
	goto err_out;
	/* verify SGMII link status */
	if (miiphy_read(bus, addr, PHYREG_PG2_MAC_SPECIFIC_STATUS_1, &value))
	goto err_out;
	if (!(value & (1 << 10)))
	return -2;

	return 0;

	err_out:
	printf("Error writing to the PHY addr=%02x\n", addr);
	return -1;
	}

	int last_stage_init(void)
	{
	unsigned int k;
	unsigned int fpga;
	int failed = 0;
	char str_phys[] = "Setup PHYs -";
	char str_serdes[] = "Start SERDES blocks";
	char str_channels[] = "Start FPGA channels";
	char str_locks[] = "Verify SERDES locks";
	char str_hicb[] = "Verify HICB status";
	char str_status[] = "Verify PHY status -";
	char slash[] = "\\\|/-\\\|/-";

	print_fpga_info(0);
	print_fpga_info(1);

	/* setup Gbit PHYs */
	puts("TRANS: ");
	puts(str_phys);
	miiphy_register(CONFIG_SYS_GBIT_MII_BUSNAME,
	bb_miiphy_read, bb_miiphy_write);

	for (k = 0; k < 32; ++k) {
	configure_gbit_phy(CONFIG_SYS_GBIT_MII_BUSNAME, k);
	putc('\b');
	putc(slash[k % 8]);
	}

	miiphy_register(CONFIG_SYS_GBIT_MII1_BUSNAME,
	bb_miiphy_read, bb_miiphy_write);

	for (k = 0; k < 32; ++k) {
	configure_gbit_phy(CONFIG_SYS_GBIT_MII1_BUSNAME, k);
	putc('\b');
	putc(slash[k % 8]);
	}
	blank_string(strlen(str_phys));

	/* take fpga serdes blocks out of reset */
	puts(str_serdes);
	udelay(500000);
	FPGA_SET_REG(0, quad_serdes_reset, 0);
	FPGA_SET_REG(1, quad_serdes_reset, 0);
	blank_string(strlen(str_serdes));

	/* take channels out of reset */
	puts(str_channels);
	udelay(500000);
	for (fpga = 0; fpga < 2; ++fpga) {
	for (k = 0; k < 32; ++k)
	FPGA_SET_REG(fpga, ch[k].config_int, 0);
	}
	blank_string(strlen(str_channels));

	/* verify channels serdes lock */
	puts(str_locks);
	udelay(500000);
	for (fpga = 0; fpga < 2; ++fpga) {
	for (k = 0; k < 32; ++k) {
	u16 status;
	FPGA_GET_REG(fpga, ch[k].status_int, &status);
	if (!(status & (1 << 4))) {
	failed = 1;
	printf("fpga %d channel %d: no serdes lock\n",
	fpga, k);
	}
	/* reset events */
	FPGA_SET_REG(fpga, ch[k].status_int, 0);
	}
	}
	blank_string(strlen(str_locks));

	/* verify hicb_status */
	puts(str_hicb);
	for (fpga = 0; fpga < 2; ++fpga) {
	for (k = 0; k < 32; ++k) {
	u16 status;
	FPGA_GET_REG(fpga, hicb_ch[k].status_int, &status);
	if (status)
	printf("fpga %d hicb %d: hicb status %04x\n",
	fpga, k, status);
	/* reset events */
	FPGA_SET_REG(fpga, hicb_ch[k].status_int, 0);
	}
	}
	blank_string(strlen(str_hicb));

	/* verify phy status */
	puts(str_status);
	for (k = 0; k < 32; ++k) {
	if (verify_gbit_phy(CONFIG_SYS_GBIT_MII_BUSNAME, k)) {
	printf("verify baseboard phy %d failed\n", k);
	failed = 1;
	}
	putc('\b');
	putc(slash[k % 8]);
	}
	for (k = 0; k < 32; ++k) {
	if (verify_gbit_phy(CONFIG_SYS_GBIT_MII1_BUSNAME, k)) {
	printf("verify extensionboard phy %d failed\n", k);
	failed = 1;
	}
	putc('\b');
	putc(slash[k % 8]);
	}
	blank_string(strlen(str_status));

	printf("Starting 64 channels %s\n", failed ? "failed" : "ok");

	return 0;
	}

	void gd405ex_init(void)
	{
	unsigned int k;

	if (i2c_probe(0x22)) { /* i2c_probe returns 0 on success */
	for (k = 0; k < CONFIG_SYS_FPGA_COUNT; ++k)
	gd->arch.fpga_state[k] \|= FPGA_STATE_PLATFORM;
	} else {
	pca9698_direction_output(0x22, 39, 1);
	}
	}

	void gd405ex_set_fpga_reset(unsigned state)
	{
	int legacy = get_fpga_state(0) & FPGA_STATE_PLATFORM;

	if (legacy) {
	if (state) {
	out_le16((void *)LATCH0_BASE, CONFIG_SYS_LATCH0_RESET);
	out_le16((void *)LATCH1_BASE, CONFIG_SYS_LATCH1_RESET);
	} else {
	out_le16((void *)LATCH0_BASE, CONFIG_SYS_LATCH0_BOOT);
	out_le16((void *)LATCH1_BASE, CONFIG_SYS_LATCH1_BOOT);
	}
	} else {
	pca9698_set_value(0x22, 39, state ? 0 : 1);
	}
	}

	void gd405ex_setup_hw(void)
	{
	gpio_write_bit(CONFIG_SYS_GPIO_STARTUP_FINISHED_N, 0);
	gpio_write_bit(CONFIG_SYS_GPIO_STARTUP_FINISHED, 1);
	}

	int gd405ex_get_fpga_done(unsigned fpga)
	{
	int legacy = get_fpga_state(0) & FPGA_STATE_PLATFORM;

	if (legacy)
	return in_le16((void *)LATCH3_BASE)
	& CONFIG_SYS_FPGA_DONE(fpga);
	else
	return pca9698_get_value(0x22, fpga ? 9 : 8);
	}