[070/108] x86: coral: Add ACPI tables for coral

diff --git a/board/google/chromebook_coral/Makefile b/board/google/chromebook_coral/Makefile
index 6a27ce3da1..f7a0ca6cc0 100644
--- a/board/google/chromebook_coral/Makefile
+++ b/board/google/chromebook_coral/Makefile
@@ -3,3 +3,4 @@ 
 # Copyright 2019 Google LLC
 
 obj-y	+= coral.o
+obj-$(CONFIG_GENERATE_ACPI_TABLE) += dsdt.o
diff --git a/board/google/chromebook_coral/baseboard_dptf.asl b/board/google/chromebook_coral/baseboard_dptf.asl
new file mode 100644
index 0000000000..5da963a670
--- /dev/null
+++ b/board/google/chromebook_coral/baseboard_dptf.asl
@@ -0,0 +1,71 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2014 Google Inc.
+ * Copyright (C) 2015 Intel Corporation.
+ */
+
+#define DPTF_CPU_PASSIVE	95
+#define DPTF_CPU_CRITICAL	105
+
+#define DPTF_TSR0_SENSOR_ID	0
+#define DPTF_TSR0_SENSOR_NAME	"Battery"
+#define DPTF_TSR0_PASSIVE	120
+#define DPTF_TSR0_CRITICAL	125
+
+#define DPTF_TSR1_SENSOR_ID	1
+#define DPTF_TSR1_SENSOR_NAME	"Ambient"
+#define DPTF_TSR1_PASSIVE	46
+#define DPTF_TSR1_CRITICAL	75
+
+#define DPTF_TSR2_SENSOR_ID	2
+#define DPTF_TSR2_SENSOR_NAME	"Charger"
+#define DPTF_TSR2_PASSIVE	58
+#define DPTF_TSR2_CRITICAL	90
+
+#define DPTF_ENABLE_CHARGER
+
+/* Charger performance states, board-specific values from charger and EC */
+Name (CHPS, Package () {
+	Package () { 0, 0, 0, 0, 255, 0xBB8, "mA", 0 },	/* 3A (MAX) */
+	Package () { 0, 0, 0, 0, 24, 0x600, "mA", 0 },	/* 1.5A */
+	Package () { 0, 0, 0, 0, 16, 0x400, "mA", 0 },	/* 1.0A */
+	Package () { 0, 0, 0, 0, 8, 0x200, "mA", 0 },	/* 0.5A */
+	Package () { 0, 0, 0, 0, 0, 0x000, "mA", 0 },	/* 0.0A */
+})
+
+Name (DTRT, Package () {
+	/* CPU Throttle Effect on CPU */
+	Package () { \_SB.PCI0.TCPU, \_SB.PCI0.TCPU, 100, 100, 0, 0, 0, 0 },
+
+	/* CPU Effect on Temp Sensor 0 */
+	Package () { \_SB.PCI0.TCPU, \_SB.DPTF.TSR0, 100, 1200, 0, 0, 0, 0 },
+
+#ifdef DPTF_ENABLE_CHARGER
+	/* Charger Effect on Temp Sensor 2 */
+	Package () { \_SB.DPTF.TCHG, \_SB.DPTF.TSR2, 200, 300, 0, 0, 0, 0 },
+#endif
+
+	/* CPU Effect on Temp Sensor 1 */
+	Package () { \_SB.PCI0.TCPU, \_SB.DPTF.TSR1, 100, 150, 0, 0, 0, 0 },
+})
+
+Name (MPPC, Package ()
+{
+	0x2,		/* Revision */
+	Package () {	/* Power Limit 1 */
+		0,	/* PowerLimitIndex, 0 for Power Limit 1 */
+		3000,	/* PowerLimitMinimum */
+		12000,	/* PowerLimitMaximum */
+		1000,	/* TimeWindowMinimum */
+		1000,	/* TimeWindowMaximum */
+		200	/* StepSize */
+	},
+	Package () {	/* Power Limit 2 */
+		1,	/* PowerLimitIndex, 1 for Power Limit 2 */
+		8000,	/* PowerLimitMinimum */
+		15000,	/* PowerLimitMaximum */
+		1000,	/* TimeWindowMinimum */
+		1000,	/* TimeWindowMaximum */
+		1000	/* StepSize */
+	}
+})
diff --git a/board/google/chromebook_coral/coral.c b/board/google/chromebook_coral/coral.c
index 4e34710b97..58b8e7293b 100644
--- a/board/google/chromebook_coral/coral.c
+++ b/board/google/chromebook_coral/coral.c
@@ -4,6 +4,19 @@ 
  */
 
 #include <common.h>
+#include <acpigen.h>
+#include <dm.h>
+#include <asm-generic/gpio.h>
+#include <asm/intel_pinctrl.h>
+#include <dm/acpi.h>
+#include "variant_gpio.h"
+
+struct cros_gpio_info {
+	const char *linux_name;
+	enum cros_gpio_t type;
+	int gpio_num;
+	int flags;
+};
 
 int arch_misc_init(void)
 {
@@ -17,3 +30,94 @@  int board_run_command(const char *cmdline)
 
 	return 0;
 }
+
+int chromeos_get_gpio(const struct udevice *dev, const char *prop,
+		      enum cros_gpio_t type, struct cros_gpio_info *info)
+{
+	struct udevice *pinctrl;
+	struct gpio_desc desc;
+	int ret;
+
+	ret = gpio_request_by_name((struct udevice *)dev, prop, 0, &desc, 0);
+	if (ret == -ENOTBLK)
+		info->gpio_num = CROS_GPIO_VIRTUAL;
+	else if (ret)
+		return log_msg_ret("gpio", ret);
+	else
+		info->gpio_num = desc.offset;
+	info->linux_name = dev_read_string(desc.dev, "linux-name");
+	if (!info->linux_name)
+		return log_msg_ret("linux-name", -ENOENT);
+	info->type = type;
+	/* Get ACPI pin from GPIO library if available */
+	if (info->gpio_num != CROS_GPIO_VIRTUAL) {
+		pinctrl = dev_get_parent(desc.dev);
+		info->gpio_num = intel_pinctrl_get_acpi_pin(pinctrl,
+							    info->gpio_num);
+	}
+	info->flags = desc.flags & GPIOD_ACTIVE_LOW ? CROS_GPIO_ACTIVE_LOW :
+		CROS_GPIO_ACTIVE_HIGH;
+
+	return 0;
+}
+
+static int chromeos_acpi_gpio_generate(const struct udevice *dev,
+				       struct acpi_ctx *ctx)
+{
+	struct cros_gpio_info info[3];
+	int count, i;
+	int ret;
+
+	count = 3;
+	ret = chromeos_get_gpio(dev, "recovery-gpios", CROS_GPIO_REC, &info[0]);
+	if (ret)
+		return log_msg_ret("rec", ret);
+	ret = chromeos_get_gpio(dev, "write-protect-gpios", CROS_GPIO_WP,
+				&info[1]);
+	if (ret)
+		return log_msg_ret("rec", ret);
+	ret = chromeos_get_gpio(dev, "phase-enforce-gpios", CROS_GPIO_PE,
+				&info[2]);
+	if (ret)
+		return log_msg_ret("rec", ret);
+	acpigen_write_scope(ctx, "\\");
+	acpigen_write_name(ctx, "OIPG");
+	acpigen_write_package(ctx, count);
+	for (i = 0; i < count; i++) {
+		acpigen_write_package(ctx, 4);
+		acpigen_write_integer(ctx, info[i].type);
+		acpigen_write_integer(ctx, info[i].flags);
+		acpigen_write_integer(ctx, info[i].gpio_num);
+		acpigen_write_string(ctx, info[i].linux_name);
+		acpigen_pop_len(ctx);
+	}
+
+	acpigen_pop_len(ctx);
+	acpigen_pop_len(ctx);
+
+	return 0;
+}
+
+static int coral_write_acpi_tables(const struct udevice *dev,
+				   struct acpi_ctx *ctx)
+{
+	/* Add NHLT here */
+	return 0;
+}
+
+struct acpi_ops coral_acpi_ops = {
+	.write_tables	= coral_write_acpi_tables,
+	.inject_dsdt	= chromeos_acpi_gpio_generate,
+};
+
+static const struct udevice_id coral_ids[] = {
+	{ .compatible = "google,coral" },
+	{ }
+};
+
+U_BOOT_DRIVER(coral_drv) = {
+	.name		= "coral",
+	.id		= UCLASS_BOARD,
+	.of_match	= coral_ids,
+	acpi_ops_ptr(&coral_acpi_ops)
+};
diff --git a/board/google/chromebook_coral/dsdt.asl b/board/google/chromebook_coral/dsdt.asl
new file mode 100644
index 0000000000..c74f4145bf
--- /dev/null
+++ b/board/google/chromebook_coral/dsdt.asl
@@ -0,0 +1,60 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2016 Google Inc.
+ */
+
+#include "variant_ec.h"
+#include "variant_gpio.h"
+#include <acpi_table.h>
+#include <asm/acpi/global_nvs.h>
+
+DefinitionBlock(
+	"dsdt.aml",
+	"DSDT",
+	0x02,		// DSDT revision: ACPI v2.0 and up
+	OEM_ID,
+	ACPI_TABLE_CREATOR,
+	0x20110725	// OEM revision
+)
+{
+	/* global NVS and variables */
+	#include <asm/arch/acpi/globalnvs.asl>
+
+	/* CPU */
+	#include <asm/acpi/cpu.asl>
+
+	Scope (\_SB) {
+		Device (PCI0)
+		{
+			#include <asm/arch/acpi/northbridge.asl>
+			#include <asm/arch/acpi/southbridge.asl>
+			#include <asm/arch/acpi/pch_hda.asl>
+		}
+	}
+
+	/* Chrome OS specific */
+	#include <asm/acpi/chromeos.asl>
+
+	/* Chipset specific sleep states */
+	#include <asm/acpi/sleepstates.asl>
+
+	/* Chrome OS Embedded Controller */
+	Scope (\_SB.PCI0.LPCB)
+	{
+		/* ACPI code for EC SuperIO functions */
+		#include <asm/acpi/cros_ec/superio.asl>
+		/* ACPI code for EC functions */
+		#include <asm/acpi/cros_ec/ec.asl>
+	}
+
+	/* Dynamic Platform Thermal Framework */
+	Scope (\_SB)
+	{
+		/* Per board variant specific definitions. */
+		#include "variant_dptf.asl"
+		/* Include soc specific DPTF changes */
+		#include <asm/arch/acpi/dptf.asl>
+		/* Include common dptf ASL files */
+		#include <asm/acpi/dptf/dptf.asl>
+	}
+}
diff --git a/board/google/chromebook_coral/variant_dptf.asl b/board/google/chromebook_coral/variant_dptf.asl
new file mode 100644
index 0000000000..943ebeaac2
--- /dev/null
+++ b/board/google/chromebook_coral/variant_dptf.asl
@@ -0,0 +1,6 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2016 Google Inc.
+ */
+
+#include "baseboard_dptf.asl"
diff --git a/board/google/chromebook_coral/variant_ec.h b/board/google/chromebook_coral/variant_ec.h
new file mode 100644
index 0000000000..7d5e1a674c
--- /dev/null
+++ b/board/google/chromebook_coral/variant_ec.h
@@ -0,0 +1,75 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2019 Google LLC
+/*
+ * Taken from coreboot file of the same name
+ */
+
+#ifndef VARIANT_EC_H
+#define VARIANT_EC_H
+
+#include "variant_gpio.h"
+#include <ec_commands.h>
+
+#define MAINBOARD_EC_SCI_EVENTS \
+	(EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED)        |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_OPEN)          |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_CONNECTED)      |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED)   |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_LOW)       |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_CRITICAL)  |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY)           |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_STATUS)    |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_THERMAL_THRESHOLD) |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_THROTTLE_START)    |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_THROTTLE_STOP)     |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_USB_CHARGER)       |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MKBP)              |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_PD_MCU)            |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MODE_CHANGE))
+
+#define MAINBOARD_EC_SMI_EVENTS \
+	(EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED))
+
+/* EC can wake from S5 with lid or power button */
+#define MAINBOARD_EC_S5_WAKE_EVENTS \
+	(EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_OPEN)     |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_POWER_BUTTON))
+
+/* EC can wake from S3 with lid or power button or key press */
+#define MAINBOARD_EC_S3_WAKE_EVENTS \
+	(MAINBOARD_EC_S5_WAKE_EVENTS |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEY_PRESSED))
+
+#define MAINBOARD_EC_S0IX_WAKE_EVENTS	(MAINBOARD_EC_S3_WAKE_EVENTS)
+
+/* Log EC wake events plus EC shutdown events */
+#define MAINBOARD_EC_LOG_EVENTS \
+	(EC_HOST_EVENT_MASK(EC_HOST_EVENT_THERMAL_SHUTDOWN) | \
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_SHUTDOWN) | \
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_PANIC))
+
+/*
+ * ACPI related definitions for ASL code.
+ */
+
+/* Enable EC backed ALS device in ACPI */
+#define EC_ENABLE_ALS_DEVICE
+
+/* Enable EC backed PD MCU device in ACPI */
+#define EC_ENABLE_PD_MCU_DEVICE
+
+/* Enable LID switch and provide wake pin for EC */
+#define EC_ENABLE_LID_SWITCH
+#define EC_ENABLE_WAKE_PIN	GPE_EC_WAKE
+
+#define EC_ENABLE_TBMC_DEVICE
+
+#define SIO_EC_MEMMAP_ENABLE     /* EC Memory Map Resources */
+#define SIO_EC_HOST_ENABLE       /* EC Host Interface Resources */
+#define SIO_EC_ENABLE_PS2K       /* Enable PS/2 Keyboard */
+
+/* Enable EC backed Keyboard Backlight in ACPI */
+#define EC_ENABLE_KEYBOARD_BACKLIGHT
+
+#endif
diff --git a/board/google/chromebook_coral/variant_gpio.h b/board/google/chromebook_coral/variant_gpio.h
new file mode 100644
index 0000000000..f516d88be5
--- /dev/null
+++ b/board/google/chromebook_coral/variant_gpio.h
@@ -0,0 +1,63 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Taken from coreboot file of the same name
+ */
+
+#ifndef BASEBOARD_GPIO_H
+#define BASEBOARD_GPIO_H
+
+#include <asm/arch/gpio.h>
+#include <ec_commands.h>
+
+/*
+ * GPIO_11 for SCI is routed to GPE0_DW1 and maps to group GPIO_GPE_N_31_0
+ * which is North community
+ */
+#define EC_SCI_GPI	GPE0_DW1_11
+
+/* EC SMI */
+#define EC_SMI_GPI	GPIO_49
+
+/*
+ * On lidopen/lidclose GPIO_22 from North Community gets toggled and
+ * is used in _PRW to wake up device from sleep. GPIO_22 maps to
+ * group GPIO_GPE_N_31_0 and the pad is configured as SCI with
+ * EDGE_SINGLE and INVERT.
+ */
+#define GPE_EC_WAKE	GPE0_DW1_22
+
+/* Write Protect and indication if EC is in RW code. */
+#define GPIO_PCH_WP	GPIO_75
+#define GPIO_EC_IN_RW	GPIO_41
+/* Determine if board is in final shipping mode. */
+#define GPIO_SHIP_MODE	GPIO_10
+
+/*  Memory SKU GPIOs. */
+#define MEM_CONFIG3	GPIO_45
+#define MEM_CONFIG2	GPIO_38
+#define MEM_CONFIG1	GPIO_102
+#define MEM_CONFIG0	GPIO_101
+
+/* DMIC_CONFIG_PIN: High for 1-DMIC and low for 4-DMIC's */
+#define DMIC_CONFIG_PIN	GPIO_17
+
+#ifndef __ASSEMBLY__
+
+enum cros_gpio_t {
+	CROS_GPIO_REC = 1,	 /* Recovery */
+
+	/* Developer; * deprecated (chromium:942901) */
+	CROS_GPIO_DEPRECATED_DEV = 2,
+	CROS_GPIO_WP = 3,	/* Write Protect */
+	CROS_GPIO_PE = 4,	/* Phase enforcement for final product */
+
+	CROS_GPIO_ACTIVE_LOW = 0,
+	CROS_GPIO_ACTIVE_HIGH = 1,
+
+	CROS_GPIO_VIRTUAL = -1,
+};
+#endif
+
+#endif /* BASEBOARD_GPIO_H */