board/ti/dra7xx/evm.c

/*
 * (C) Copyright 2013
 * Texas Instruments Incorporated, <www.ti.com>
 *
 * Lokesh Vutla <lokeshvutla@ti.com>
 *
 * Based on previous work by:
 * Aneesh V       <aneesh@ti.com>
 * Steve Sakoman  <steve@sakoman.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <common.h>
#include <palmas.h>
#include <sata.h>
#include <linux/string.h>
#include <asm/gpio.h>
#include <usb.h>
#include <linux/usb/gadget.h>
#include <asm/arch/gpio.h>
#include <asm/arch/dra7xx_iodelay.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/sata.h>
#include <environment.h>
#include <dwc3-uboot.h>
#include <dwc3-omap-uboot.h>
#include <ti-usb-phy-uboot.h>

#include "mux_data.h"
#include "../common/board_detect.h"

#define board_is_dra74x_evm()		board_ti_is("5777xCPU")
#define board_is_dra74x_revh_or_later() board_is_dra74x_evm() &&	\
				(strncmp("H", board_ti_get_rev(), 1) <= 0)

#ifdef CONFIG_DRIVER_TI_CPSW
#include <cpsw.h>
#endif

DECLARE_GLOBAL_DATA_PTR;

/* GPIO 7_11 */
#define GPIO_DDR_VTT_EN 203

#define SYSINFO_BOARD_NAME_MAX_LEN	37

const struct omap_sysinfo sysinfo = {
	"Board: UNKNOWN(DRA7 EVM) REV UNKNOWN\n"
};

/**
 * @brief board_init
 *
 * @return 0
 */
int board_init(void)
{
	gpmc_init();
	gd->bd->bi_boot_params = (0x80000000 + 0x100); /* boot param addr */

	return 0;
}

int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	char *name = "unknown";

	if (is_dra72x())
		name = "dra72x";
	else
		name = "dra7xx";

	set_board_info_env(name);

	omap_die_id_serial();
#endif
	return 0;
}

#ifdef CONFIG_SPL_BUILD
void do_board_detect(void)
{
	int rc;

	rc = ti_i2c_eeprom_dra7_get(CONFIG_EEPROM_BUS_ADDRESS,
				    CONFIG_EEPROM_CHIP_ADDRESS);
	if (rc)
		printf("ti_i2c_eeprom_init failed %d\n", rc);
}

#else

void do_board_detect(void)
{
	char *bname = NULL;
	int rc;

	rc = ti_i2c_eeprom_dra7_get(CONFIG_EEPROM_BUS_ADDRESS,
				    CONFIG_EEPROM_CHIP_ADDRESS);
	if (rc)
		printf("ti_i2c_eeprom_init failed %d\n", rc);

	if (board_is_dra74x_evm()) {
		bname = "DRA74x EVM";
	/* If EEPROM is not populated */
	} else {
		if (is_dra72x())
			bname = "DRA72x EVM";
		else
			bname = "DRA74x EVM";
	}

	if (bname)
		snprintf(sysinfo.board_string, SYSINFO_BOARD_NAME_MAX_LEN,
			 "Board: %s REV %s\n", bname, board_ti_get_rev());
}
#endif	/* CONFIG_SPL_BUILD */

void set_muxconf_regs_essential(void)
{
	do_set_mux32((*ctrl)->control_padconf_core_base,
		     early_padconf, ARRAY_SIZE(early_padconf));
}

#ifdef CONFIG_IODELAY_RECALIBRATION
void recalibrate_iodelay(void)
{
	struct pad_conf_entry const *pads;
	struct iodelay_cfg_entry const *iodelay;
	int npads, niodelays;

	switch (omap_revision()) {
	case DRA722_ES1_0:
		pads = core_padconf_array_essential;
		npads = ARRAY_SIZE(core_padconf_array_essential);
		iodelay = iodelay_cfg_array;
		niodelays = ARRAY_SIZE(iodelay_cfg_array);
		break;
	case DRA752_ES1_0:
	case DRA752_ES1_1:
		pads = dra74x_core_padconf_array;
		npads = ARRAY_SIZE(dra74x_core_padconf_array);
		iodelay = dra742_es1_1_iodelay_cfg_array;
		niodelays = ARRAY_SIZE(dra742_es1_1_iodelay_cfg_array);
		break;
	default:
	case DRA752_ES2_0:
		pads = dra74x_core_padconf_array;
		npads = ARRAY_SIZE(dra74x_core_padconf_array);
		iodelay = dra742_es2_0_iodelay_cfg_array;
		niodelays = ARRAY_SIZE(dra742_es2_0_iodelay_cfg_array);
		/* Setup port1 and port2 for rgmii with 'no-id' mode */
		clrset_spare_register(1, 0, RGMII2_ID_MODE_N_MASK |
				      RGMII1_ID_MODE_N_MASK);
		break;
	}
	__recalibrate_iodelay(pads, npads, iodelay, niodelays);
}
#endif

#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_GENERIC_MMC)
int board_mmc_init(bd_t *bis)
{
	omap_mmc_init(0, 0, 0, -1, -1);
	omap_mmc_init(1, 0, 0, -1, -1);
	return 0;
}
#endif

#ifdef CONFIG_USB_DWC3
static struct dwc3_device usb_otg_ss1 = {
	.maximum_speed = USB_SPEED_SUPER,
	.base = DRA7_USB_OTG_SS1_BASE,
	.tx_fifo_resize = false,
	.index = 0,
};

static struct dwc3_omap_device usb_otg_ss1_glue = {
	.base = (void *)DRA7_USB_OTG_SS1_GLUE_BASE,
	.utmi_mode = DWC3_OMAP_UTMI_MODE_SW,
	.index = 0,
};

static struct ti_usb_phy_device usb_phy1_device = {
	.pll_ctrl_base = (void *)DRA7_USB3_PHY1_PLL_CTRL,
	.usb2_phy_power = (void *)DRA7_USB2_PHY1_POWER,
	.usb3_phy_power = (void *)DRA7_USB3_PHY1_POWER,
	.index = 0,
};

static struct dwc3_device usb_otg_ss2 = {
	.maximum_speed = USB_SPEED_SUPER,
	.base = DRA7_USB_OTG_SS2_BASE,
	.tx_fifo_resize = false,
	.index = 1,
};

static struct dwc3_omap_device usb_otg_ss2_glue = {
	.base = (void *)DRA7_USB_OTG_SS2_GLUE_BASE,
	.utmi_mode = DWC3_OMAP_UTMI_MODE_SW,
	.index = 1,
};

static struct ti_usb_phy_device usb_phy2_device = {
	.usb2_phy_power = (void *)DRA7_USB2_PHY2_POWER,
	.index = 1,
};

int board_usb_init(int index, enum usb_init_type init)
{
	enable_usb_clocks(index);
	switch (index) {
	case 0:
		if (init == USB_INIT_DEVICE) {
			usb_otg_ss1.dr_mode = USB_DR_MODE_PERIPHERAL;
			usb_otg_ss1_glue.vbus_id_status = OMAP_DWC3_VBUS_VALID;
		} else {
			usb_otg_ss1.dr_mode = USB_DR_MODE_HOST;
			usb_otg_ss1_glue.vbus_id_status = OMAP_DWC3_ID_GROUND;
		}

		ti_usb_phy_uboot_init(&usb_phy1_device);
		dwc3_omap_uboot_init(&usb_otg_ss1_glue);
		dwc3_uboot_init(&usb_otg_ss1);
		break;
	case 1:
		if (init == USB_INIT_DEVICE) {
			usb_otg_ss2.dr_mode = USB_DR_MODE_PERIPHERAL;
			usb_otg_ss2_glue.vbus_id_status = OMAP_DWC3_VBUS_VALID;
		} else {
			usb_otg_ss2.dr_mode = USB_DR_MODE_HOST;
			usb_otg_ss2_glue.vbus_id_status = OMAP_DWC3_ID_GROUND;
		}

		ti_usb_phy_uboot_init(&usb_phy2_device);
		dwc3_omap_uboot_init(&usb_otg_ss2_glue);
		dwc3_uboot_init(&usb_otg_ss2);
		break;
	default:
		printf("Invalid Controller Index\n");
	}

	return 0;
}

int board_usb_cleanup(int index, enum usb_init_type init)
{
	switch (index) {
	case 0:
	case 1:
		ti_usb_phy_uboot_exit(index);
		dwc3_uboot_exit(index);
		dwc3_omap_uboot_exit(index);
		break;
	default:
		printf("Invalid Controller Index\n");
	}
	disable_usb_clocks(index);
	return 0;
}

int usb_gadget_handle_interrupts(int index)
{
	u32 status;

	status = dwc3_omap_uboot_interrupt_status(index);
	if (status)
		dwc3_uboot_handle_interrupt(index);

	return 0;
}
#endif

#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_OS_BOOT)
int spl_start_uboot(void)
{
	/* break into full u-boot on 'c' */
	if (serial_tstc() && serial_getc() == 'c')
		return 1;

#ifdef CONFIG_SPL_ENV_SUPPORT
	env_init();
	env_relocate_spec();
	if (getenv_yesno("boot_os") != 1)
		return 1;
#endif

	return 0;
}
#endif

#ifdef CONFIG_DRIVER_TI_CPSW
extern u32 *const omap_si_rev;

static void cpsw_control(int enabled)
{
	/* VTP can be added here */

	return;
}

static struct cpsw_slave_data cpsw_slaves[] = {
	{
		.slave_reg_ofs	= 0x208,
		.sliver_reg_ofs	= 0xd80,
		.phy_addr	= 2,
	},
	{
		.slave_reg_ofs	= 0x308,
		.sliver_reg_ofs	= 0xdc0,
		.phy_addr	= 3,
	},
};

static struct cpsw_platform_data cpsw_data = {
	.mdio_base		= CPSW_MDIO_BASE,
	.cpsw_base		= CPSW_BASE,
	.mdio_div		= 0xff,
	.channels		= 8,
	.cpdma_reg_ofs		= 0x800,
	.slaves			= 2,
	.slave_data		= cpsw_slaves,
	.ale_reg_ofs		= 0xd00,
	.ale_entries		= 1024,
	.host_port_reg_ofs	= 0x108,
	.hw_stats_reg_ofs	= 0x900,
	.bd_ram_ofs		= 0x2000,
	.mac_control		= (1 << 5),
	.control		= cpsw_control,
	.host_port_num		= 0,
	.version		= CPSW_CTRL_VERSION_2,
};

int board_eth_init(bd_t *bis)
{
	int ret;
	uint8_t mac_addr[6];
	uint32_t mac_hi, mac_lo;
	uint32_t ctrl_val;

	/* try reading mac address from efuse */
	mac_lo = readl((*ctrl)->control_core_mac_id_0_lo);
	mac_hi = readl((*ctrl)->control_core_mac_id_0_hi);
	mac_addr[0] = (mac_hi & 0xFF0000) >> 16;
	mac_addr[1] = (mac_hi & 0xFF00) >> 8;
	mac_addr[2] = mac_hi & 0xFF;
	mac_addr[3] = (mac_lo & 0xFF0000) >> 16;
	mac_addr[4] = (mac_lo & 0xFF00) >> 8;
	mac_addr[5] = mac_lo & 0xFF;

	if (!getenv("ethaddr")) {
		printf("<ethaddr> not set. Validating first E-fuse MAC\n");

		if (is_valid_ethaddr(mac_addr))
			eth_setenv_enetaddr("ethaddr", mac_addr);
	}

	mac_lo = readl((*ctrl)->control_core_mac_id_1_lo);
	mac_hi = readl((*ctrl)->control_core_mac_id_1_hi);
	mac_addr[0] = (mac_hi & 0xFF0000) >> 16;
	mac_addr[1] = (mac_hi & 0xFF00) >> 8;
	mac_addr[2] = mac_hi & 0xFF;
	mac_addr[3] = (mac_lo & 0xFF0000) >> 16;
	mac_addr[4] = (mac_lo & 0xFF00) >> 8;
	mac_addr[5] = mac_lo & 0xFF;

	if (!getenv("eth1addr")) {
		if (is_valid_ethaddr(mac_addr))
			eth_setenv_enetaddr("eth1addr", mac_addr);
	}

	ctrl_val = readl((*ctrl)->control_core_control_io1) & (~0x33);
	ctrl_val |= 0x22;
	writel(ctrl_val, (*ctrl)->control_core_control_io1);

	if (*omap_si_rev == DRA722_ES1_0)
		cpsw_data.active_slave = 1;

	ret = cpsw_register(&cpsw_data);
	if (ret < 0)
		printf("Error %d registering CPSW switch\n", ret);

	return ret;
}
#endif

#ifdef CONFIG_BOARD_EARLY_INIT_F
/* VTT regulator enable */
static inline void vtt_regulator_enable(void)
{
	if (omap_hw_init_context() == OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL)
		return;

	/* Do not enable VTT for DRA722 */
	if (omap_revision() == DRA722_ES1_0)
		return;

	/*
	 * EVM Rev G and later use gpio7_11 for DDR3 termination.
	 * This is safe enough to do on older revs.
	 */
	gpio_request(GPIO_DDR_VTT_EN, "ddr_vtt_en");
	gpio_direction_output(GPIO_DDR_VTT_EN, 1);
}

int board_early_init_f(void)
{
	vtt_regulator_enable();
	return 0;
}
#endif