Merge https://gitlab.denx.de/u-boot/custodians/u-boot-x86

- New timer API to allow delays with a 32-bit microsecond timer
- Add dynamic ACPI structs (DSDT/SSDT) generations to the DM core
- x86: Enable ACPI table generation by default
- x86: Enable the copy framebuffer on Coral
- x86: A few fixes to FSP2 with ApolloLake
- x86: Drop setup_pcat_compatibility()
- x86: Primary-to-Sideband Bus minor fixes

1 files changed, 402 insertions, 0 deletions

diff --git a/lib/acpi/acpi_dp.c b/lib/acpi/acpi_dp.c
new file mode 100644
index 0000000000..579cab4771
--- /dev/null
+++ b/lib/acpi/acpi_dp.c
@@ -0,0 +1,402 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Generation of tables for particular device types
+ *
+ * Copyright 2019 Google LLC
+ * Mostly taken from coreboot file acpi_device.c
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <log.h>
+#include <malloc.h>
+#include <uuid.h>
+#include <acpi/acpigen.h>
+#include <acpi/acpi_dp.h>
+#include <dm/acpi.h>
+
+static void acpi_dp_write_array(struct acpi_ctx *ctx,
+				const struct acpi_dp *array);
+
+static void acpi_dp_write_value(struct acpi_ctx *ctx,
+				const struct acpi_dp *prop)
+{
+	switch (prop->type) {
+	case ACPI_DP_TYPE_INTEGER:
+		acpigen_write_integer(ctx, prop->integer);
+		break;
+	case ACPI_DP_TYPE_STRING:
+	case ACPI_DP_TYPE_CHILD:
+		acpigen_write_string(ctx, prop->string);
+		break;
+	case ACPI_DP_TYPE_REFERENCE:
+		acpigen_emit_namestring(ctx, prop->string);
+		break;
+	case ACPI_DP_TYPE_ARRAY:
+		acpi_dp_write_array(ctx, prop->array);
+		break;
+	default:
+		break;
+	}
+}
+
+/* Package (2) { "prop->name", VALUE } */
+static void acpi_dp_write_property(struct acpi_ctx *ctx,
+				   const struct acpi_dp *prop)
+{
+	acpigen_write_package(ctx, 2);
+	acpigen_write_string(ctx, prop->name);
+	acpi_dp_write_value(ctx, prop);
+	acpigen_pop_len(ctx);
+}
+
+/* Write array of Device Properties */
+static void acpi_dp_write_array(struct acpi_ctx *ctx,
+				const struct acpi_dp *array)
+{
+	const struct acpi_dp *dp;
+	char *pkg_count;
+
+	/* Package element count determined as it is populated */
+	pkg_count = acpigen_write_package(ctx, 0);
+
+	/*
+	 * Only acpi_dp of type DP_TYPE_TABLE is allowed to be an array.
+	 * DP_TYPE_TABLE does not have a value to be written. Thus, start
+	 * the loop from next type in the array.
+	 */
+	for (dp = array->next; dp; dp = dp->next) {
+		acpi_dp_write_value(ctx, dp);
+		(*pkg_count)++;
+	}
+
+	acpigen_pop_len(ctx);
+}
+
+static void acpi_dp_free(struct acpi_dp *dp)
+{
+	assert(dp);
+	while (dp) {
+		struct acpi_dp *p = dp->next;
+
+		switch (dp->type) {
+		case ACPI_DP_TYPE_CHILD:
+			acpi_dp_free(dp->child);
+			break;
+		case ACPI_DP_TYPE_ARRAY:
+			acpi_dp_free(dp->array);
+			break;
+		default:
+			break;
+		}
+
+		free(dp);
+		dp = p;
+	}
+}
+
+static int acpi_dp_write_internal(struct acpi_ctx *ctx, struct acpi_dp *table)
+{
+	struct acpi_dp *dp, *prop;
+	char *dp_count, *prop_count = NULL;
+	int child_count = 0;
+	int ret;
+
+	assert(table);
+	if (table->type != ACPI_DP_TYPE_TABLE)
+		return 0;
+
+	/* Name (name) */
+	acpigen_write_name(ctx, table->name);
+
+	/* Device Property list starts with the next entry */
+	prop = table->next;
+
+	/* Package (DP), default to assuming no properties or children */
+	dp_count = acpigen_write_package(ctx, 0);
+
+	/* Print base properties */
+	for (dp = prop; dp; dp = dp->next) {
+		if (dp->type == ACPI_DP_TYPE_CHILD) {
+			child_count++;
+		} else {
+			/*
+			 * The UUID and package is only added when
+			 * we come across the first property.  This
+			 * is to avoid creating a zero-length package
+			 * in situations where there are only children.
+			 */
+			if (!prop_count) {
+				*dp_count += 2;
+				/* ToUUID (ACPI_DP_UUID) */
+				ret = acpigen_write_uuid(ctx, ACPI_DP_UUID);
+				if (ret)
+					return log_msg_ret("touuid", ret);
+				/*
+				 * Package (PROP), element count determined as
+				 * it is populated
+				 */
+				prop_count = acpigen_write_package(ctx, 0);
+			}
+			(*prop_count)++;
+			acpi_dp_write_property(ctx, dp);
+		}
+	}
+
+	if (prop_count) {
+		/* Package (PROP) length, if a package was written */
+		acpigen_pop_len(ctx);
+	}
+
+	if (child_count) {
+		/* Update DP package count to 2 or 4 */
+		*dp_count += 2;
+		/* ToUUID (ACPI_DP_CHILD_UUID) */
+		ret = acpigen_write_uuid(ctx, ACPI_DP_CHILD_UUID);
+		if (ret)
+			return log_msg_ret("child uuid", ret);
+
+		/* Print child pointer properties */
+		acpigen_write_package(ctx, child_count);
+
+		for (dp = prop; dp; dp = dp->next)
+			if (dp->type == ACPI_DP_TYPE_CHILD)
+				acpi_dp_write_property(ctx, dp);
+		/* Package (CHILD) length */
+		acpigen_pop_len(ctx);
+	}
+
+	/* Package (DP) length */
+	acpigen_pop_len(ctx);
+
+	/* Recursively parse children into separate tables */
+	for (dp = prop; dp; dp = dp->next) {
+		if (dp->type == ACPI_DP_TYPE_CHILD) {
+			ret = acpi_dp_write_internal(ctx, dp->child);
+			if (ret)
+				return log_msg_ret("dp child", ret);
+		}
+	}
+
+	return 0;
+}
+
+int acpi_dp_write(struct acpi_ctx *ctx, struct acpi_dp *table)
+{
+	int ret;
+
+	ret = acpi_dp_write_internal(ctx, table);
+
+	/* Clean up */
+	acpi_dp_free(table);
+
+	if (ret)
+		return log_msg_ret("write", ret);
+
+	return 0;
+}
+
+static struct acpi_dp *acpi_dp_new(struct acpi_dp *dp, enum acpi_dp_type type,
+				   const char *name)
+{
+	struct acpi_dp *new;
+
+	new = malloc(sizeof(struct acpi_dp));
+	if (!new)
+		return NULL;
+
+	memset(new, '\0', sizeof(*new));
+	new->type = type;
+	new->name = name;
+
+	if (dp) {
+		/* Add to end of property list */
+		while (dp->next)
+			dp = dp->next;
+		dp->next = new;
+	}
+
+	return new;
+}
+
+struct acpi_dp *acpi_dp_new_table(const char *name)
+{
+	return acpi_dp_new(NULL, ACPI_DP_TYPE_TABLE, name);
+}
+
+struct acpi_dp *acpi_dp_add_integer(struct acpi_dp *dp, const char *name,
+				    u64 value)
+{
+	struct acpi_dp *new;
+
+	assert(dp);
+	new = acpi_dp_new(dp, ACPI_DP_TYPE_INTEGER, name);
+
+	if (new)
+		new->integer = value;
+
+	return new;
+}
+
+struct acpi_dp *acpi_dp_add_string(struct acpi_dp *dp, const char *name,
+				   const char *string)
+{
+	struct acpi_dp *new;
+
+	assert(dp);
+	new = acpi_dp_new(dp, ACPI_DP_TYPE_STRING, name);
+	if (new)
+		new->string = string;
+
+	return new;
+}
+
+struct acpi_dp *acpi_dp_add_reference(struct acpi_dp *dp, const char *name,
+				      const char *reference)
+{
+	struct acpi_dp *new;
+
+	assert(dp);
+	new = acpi_dp_new(dp, ACPI_DP_TYPE_REFERENCE, name);
+	if (new)
+		new->string = reference;
+
+	return new;
+}
+
+struct acpi_dp *acpi_dp_add_child(struct acpi_dp *dp, const char *name,
+				  struct acpi_dp *child)
+{
+	struct acpi_dp *new;
+
+	assert(dp);
+	if (child->type != ACPI_DP_TYPE_TABLE)
+		return NULL;
+
+	new = acpi_dp_new(dp, ACPI_DP_TYPE_CHILD, name);
+	if (new) {
+		new->child = child;
+		new->string = child->name;
+	}
+
+	return new;
+}
+
+struct acpi_dp *acpi_dp_add_array(struct acpi_dp *dp, struct acpi_dp *array)
+{
+	struct acpi_dp *new;
+
+	assert(dp);
+	assert(array);
+	if (array->type != ACPI_DP_TYPE_TABLE)
+		return NULL;
+
+	new = acpi_dp_new(dp, ACPI_DP_TYPE_ARRAY, array->name);
+	if (new)
+		new->array = array;
+
+	return new;
+}
+
+struct acpi_dp *acpi_dp_add_integer_array(struct acpi_dp *dp, const char *name,
+					  u64 *array, int len)
+{
+	struct acpi_dp *dp_array;
+	int i;
+
+	assert(dp);
+	if (len <= 0)
+		return NULL;
+
+	dp_array = acpi_dp_new_table(name);
+	if (!dp_array)
+		return NULL;
+
+	for (i = 0; i < len; i++)
+		if (!acpi_dp_add_integer(dp_array, NULL, array[i]))
+			break;
+
+	if (!acpi_dp_add_array(dp, dp_array))
+		return NULL;
+
+	return dp_array;
+}
+
+struct acpi_dp *acpi_dp_add_gpio(struct acpi_dp *dp, const char *name,
+				 const char *ref, int index, int pin,
+				 enum acpi_irq_polarity polarity)
+{
+	struct acpi_dp *gpio;
+
+	assert(dp);
+	gpio = acpi_dp_new_table(name);
+	if (!gpio)
+		return NULL;
+
+	if (!acpi_dp_add_reference(gpio, NULL, ref) ||
+	    !acpi_dp_add_integer(gpio, NULL, index) ||
+	    !acpi_dp_add_integer(gpio, NULL, pin) ||
+	    !acpi_dp_add_integer(gpio, NULL, polarity == ACPI_IRQ_ACTIVE_LOW))
+		return NULL;
+
+	if (!acpi_dp_add_array(dp, gpio))
+		return NULL;
+
+	return gpio;
+}
+
+int acpi_dp_ofnode_copy_int(ofnode node, struct acpi_dp *dp, const char *prop)
+{
+	int ret;
+	u32 val = 0;
+
+	ret = ofnode_read_u32(node, prop, &val);
+	if (ret)
+		return ret;
+	if (!acpi_dp_add_integer(dp, prop, val))
+		return log_ret(-ENOMEM);
+
+	return 0;
+}
+
+int acpi_dp_ofnode_copy_str(ofnode node, struct acpi_dp *dp, const char *prop)
+{
+	const char *val;
+
+	val = ofnode_read_string(node, prop);
+	if (!val)
+		return -EINVAL;
+	if (!acpi_dp_add_string(dp, prop, val))
+		return log_ret(-ENOMEM);
+
+	return 0;
+}
+
+int acpi_dp_dev_copy_int(const struct udevice *dev, struct acpi_dp *dp,
+			 const char *prop)
+{
+	int ret;
+	u32 val = 0;
+
+	ret = dev_read_u32(dev, prop, &val);
+	if (ret)
+		return ret;
+	if (!acpi_dp_add_integer(dp, prop, val))
+		return log_ret(-ENOMEM);
+
+	return ret;
+}
+
+int acpi_dp_dev_copy_str(const struct udevice *dev, struct acpi_dp *dp,
+			 const char *prop)
+{
+	const char *val;
+
+	val = dev_read_string(dev, prop);
+	if (!val)
+		return -EINVAL;
+	if (!acpi_dp_add_string(dp, prop, val))
+		return log_ret(-ENOMEM);
+
+	return 0;
+}