src/mainboard/google/herobrine/mainboard.c

/* SPDX-License-Identifier: GPL-2.0-only */

#include "board.h"
#include <boardid.h>
#include <bootblock_common.h>
#include <bootmode.h>
#include <console/console.h>
#include <delay.h>
#include <device/device.h>
#include <device/mmio.h>
#include <ec/google/chromeec/ec.h>
#include <edid.h>
#include <soc/clock.h>
#include <soc/display/mdssreg.h>
#include <soc/display/edp_ctrl.h>
#include <soc/pcie.h>
#include <soc/qupv3_config_common.h>
#include <soc/qup_se_handlers_common.h>
#include <soc/qcom_qup_se.h>
#include <soc/usb/usb_common.h>
#include <soc/usb/snps_usb_phy.h>

static struct usb_board_data usb0_board_data = {
	.parameter_override_x0 = 0xe6,
	.parameter_override_x1 = 0x8b,
	.parameter_override_x2 = 0x16,
	.parameter_override_x3 = 0x03,
};

static void setup_usb(void)
{
	/* Assert EN_PP3300_HUB for those board variants that use it. */
	gpio_output(USB_HUB_LDO_EN, 1);

	setup_usb_host0(&usb0_board_data);
}

static void configure_sdhci(void)
{
	/* Program eMMC drive strength to 16/10/10 mA */
	write32((void *)SDC1_TLMM_CFG_ADDR, 0x9FE4);
	/* Program SD card drive strength to 16/10/10 mA */
	write32((void *)SDC2_TLMM_CFG_ADDR, 0x1FE4);
}

static void qi2s_configure_gpios(void)
{
	gpio_configure(GPIO_MI2S1_SCK, GPIO106_FUNC_MI2S1_SCK,
		GPIO_NO_PULL, GPIO_16MA, GPIO_OUTPUT);

	gpio_configure(GPIO_MI2S1_WS, GPIO108_FUNC_MI2S1_WS,
		GPIO_NO_PULL, GPIO_16MA, GPIO_OUTPUT);

	gpio_configure(GPIO_MI2S1_DATA0, GPIO107_FUNC_MI2S1_DATA0,
		GPIO_NO_PULL, GPIO_16MA, GPIO_OUTPUT);
}

static void edp_configure_gpios(void)
{
	/* Panel power on GPIO enable */
	gpio_output(GPIO_PANEL_POWER_ON, 1);

	/* Panel HPD GPIO enable */
	gpio_input_pulldown(GPIO_PANEL_HPD);
}

static void display_startup(void)
{
	struct edid ed;

	if (!display_init_required()) {
		printk(BIOS_INFO, "Skipping display init.\n");
		return;
	}

	enable_mdss_clk();
	edp_configure_gpios();
	mdelay(250); /* Delay for the panel to be up */
	if (edp_ctrl_init(&ed) == CB_SUCCESS) {
		mdp_dsi_video_config(&ed);
		mdp_dsi_video_on();
		edid_set_framebuffer_bits_per_pixel(&ed, 32, 0);
		fb_new_framebuffer_info_from_edid(&ed, (uintptr_t)0);
	}
}

/*
 * Determine if board need to perform PCIe initialization.  On Herobrine,
 * resistor strapping will be such that bit 0 will be assigned 2 (high Z) if it
 * is an NVMe enabled platform.
 */
bool mainboard_needs_pcie_init(void)
{
	/*
	 * Mask out everything above the actual SKU bits We have 3 sku pins,
	 * each tristate, so we can represent numbers up to 27, or 5 bits
	 */
	uint32_t sku_bits_mask = 0xff;
	uint32_t sku = sku_id() & sku_bits_mask;

	if (sku == CROS_SKU_UNKNOWN) {
		printk(BIOS_WARNING, "Unknown SKU (%#x); assuming PCIe", sku);
		return true;
	} else if (sku == CROS_SKU_UNPROVISIONED) {
		printk(BIOS_WARNING, "Unprovisioned SKU (%#x); assuming PCIe", sku);
		return true;
	}

	if ((sku % 3) == 2)
		return true;

	/* Otherwise, eMMC */
	return false;
}

static void mainboard_init(struct device *dev)
{
	/* Configure clock for eMMC */
	clock_configure_sdcc1(384 * MHz);
	/* Configure clock for SD card */
	clock_configure_sdcc2(50 * MHz);
	configure_sdhci();

	gpi_firmware_load(QUP_0_GSI_BASE);
	gpi_firmware_load(QUP_1_GSI_BASE);

	/*
	 * When coreboot firmware disables serial output,
	 * we still need to load console UART QUP FW for OS.
	 */
	if (!CONFIG(CONSOLE_SERIAL))
		qupv3_se_fw_load_and_init(QUPV3_0_SE5, SE_PROTOCOL_UART, FIFO);

	qupv3_se_fw_load_and_init(QUPV3_1_SE5, SE_PROTOCOL_I2C, MIXED);	 /* Touch I2C */
	qupv3_se_fw_load_and_init(QUPV3_0_SE7, SE_PROTOCOL_UART, FIFO);  /* BT UART */

	if (CONFIG(BOARD_GOOGLE_HEROBRINE_REV0)) {
		/* Audio I2C */
		qupv3_se_fw_load_and_init(QUPV3_0_SE0, SE_PROTOCOL_I2C, MIXED);
		/* Trackpad I2C */
		qupv3_se_fw_load_and_init(QUPV3_0_SE1, SE_PROTOCOL_I2C, MIXED);
		/* SAR sensor I2C */
		qupv3_se_fw_load_and_init(QUPV3_0_SE2, SE_PROTOCOL_I2C, MIXED);
		/* Fingerprint SPI */
		qupv3_se_fw_load_and_init(QUPV3_1_SE3, SE_PROTOCOL_SPI, MIXED);
	} else if (CONFIG(BOARD_GOOGLE_SENOR) || CONFIG(BOARD_GOOGLE_PIGLIN)) {
		/* APPS I2C */
		qupv3_se_fw_load_and_init(QUPV3_0_SE1, SE_PROTOCOL_I2C, GSI);
		/* ESIM SPI */
		qupv3_se_fw_load_and_init(QUPV3_1_SE4, SE_PROTOCOL_SPI, MIXED);
		/* Trackpad I2C */
		qupv3_se_fw_load_and_init(QUPV3_0_SE0, SE_PROTOCOL_I2C, MIXED);
	} else {
		/* Trackpad I2C */
		qupv3_se_fw_load_and_init(QUPV3_0_SE0, SE_PROTOCOL_I2C, MIXED);
		/* SAR sensor I2C */
		qupv3_se_fw_load_and_init(QUPV3_0_SE1, SE_PROTOCOL_I2C, MIXED);
		/* Audio I2C */
		qupv3_se_fw_load_and_init(QUPV3_0_SE2, SE_PROTOCOL_I2C, MIXED);
		/* Fingerprint SPI */
		if (CONFIG(HEROBRINE_HAS_FINGERPRINT))
			qupv3_se_fw_load_and_init(QUPV3_1_SE1, SE_PROTOCOL_SPI, MIXED);
	}

	/* Take FPMCU out of reset. Power was already applied
	   in romstage and should have stabilized by now. */
	if (CONFIG(HEROBRINE_HAS_FINGERPRINT))
		gpio_output(GPIO_FP_RST_L, 1);

	setup_usb();
	qi2s_configure_gpios();
	display_startup();
}

static void mainboard_enable(struct device *dev)
{
	dev->ops->init = &mainboard_init;
}

struct chip_operations mainboard_ops = {
	.name = CONFIG_MAINBOARD_PART_NUMBER,
	.enable_dev = mainboard_enable,
};