1 files changed, 98 insertions, 0 deletions
diff --git a/src/drivers/generic/generic/generic.c b/src/drivers/generic/generic/generic.c
new file mode 100644
index 0000000000..37fbab5c61
--- /dev/null
+++ b/src/drivers/generic/generic/generic.c
@@ -0,0 +1,98 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 Google LLC
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <arch/acpi_device.h>
+#include <arch/acpigen.h>
+#include <console/console.h>
+#include <device/device.h>
+#include <device/path.h>
+#include <stdint.h>
+#include <string.h>
+#include "chip.h"
+
+static void generic_dev_fill_ssdt_generator(struct device *dev)
+{
+	struct acpi_dp *dsd;
+	struct drivers_generic_generic_config *config = dev->chip_info;
+
+	if (!dev->enabled || !config)
+		return;
+
+	if (!config->hid) {
+		printk(BIOS_ERR, "%s: ERROR: _HID required\n", dev_path(dev));
+		return;
+	}
+
+	acpigen_write_scope(acpi_device_scope(dev));
+	acpigen_write_device(acpi_device_name(dev));
+	acpigen_write_name_string("_HID", config->hid);
+	if (config->cid)
+		acpigen_write_name_string("_CID", config->cid);
+	acpigen_write_name_integer("_UID", config->uid);
+	acpigen_write_name_string("_DDN", config->desc);
+	acpigen_write_STA(acpi_device_status(dev));
+
+	dsd = acpi_dp_new_table("_DSD");
+	acpi_dp_add_property_list(dsd, config->property_list,
+				  config->property_count);
+	acpi_dp_write(dsd);
+
+	acpigen_pop_len();	/* Device */
+	acpigen_pop_len();	/* Scope */
+
+	printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev),
+	       config->desc ? : dev->chip_ops->name, dev_path(dev));
+}
+
+static char *generic_autogen_name(struct drivers_generic_generic_config *config)
+{
+	char *name = &config->autogen_name[0];
+	static unsigned int id;
+
+	if (name[0] != '\0')
+		return name;
+
+	snprintf(name, sizeof(name), "G%03.3X", id++);
+	name[4] = '\0';
+	return name;
+}
+
+static const char *generic_dev_acpi_name(const struct device *dev)
+{
+	struct drivers_generic_generic_config *config = dev->chip_info;
+
+	if (config->name)
+		return config->name;
+
+	return generic_autogen_name(config);
+}
+
+static struct device_operations generic_dev_ops = {
+	.read_resources			= DEVICE_NOOP,
+	.set_resources			= DEVICE_NOOP,
+	.enable_resources		= DEVICE_NOOP,
+	.acpi_name			= &generic_dev_acpi_name,
+	.acpi_fill_ssdt_generator	= &generic_dev_fill_ssdt_generator,
+};
+
+static void generic_dev_enable(struct device *dev)
+{
+	dev->ops = &generic_dev_ops;
+}
+
+struct chip_operations drivers_generic_generic_ops = {
+	CHIP_NAME("Generic Device")
+	.enable_dev = &generic_dev_enable
+};