4 files changed, 109 insertions, 0 deletions
diff --git a/src/drivers/intel/ish/Kconfig b/src/drivers/intel/ish/Kconfig
new file mode 100644
index 0000000000..635864e143
--- /dev/null
+++ b/src/drivers/intel/ish/Kconfig
@@ -0,0 +1,5 @@
+config DRIVERS_INTEL_ISH
+	bool
+	help
+	   When enabled, chip driver/intel/ish will publish information to the
+	   SSDT _DSD table for the ISH device.
diff --git a/src/drivers/intel/ish/Makefile.inc b/src/drivers/intel/ish/Makefile.inc
new file mode 100644
index 0000000000..cab2b1d804
--- /dev/null
+++ b/src/drivers/intel/ish/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_DRIVERS_INTEL_ISH) += ish.c
diff --git a/src/drivers/intel/ish/chip.h b/src/drivers/intel/ish/chip.h
new file mode 100644
index 0000000000..ae3fb35b8d
--- /dev/null
+++ b/src/drivers/intel/ish/chip.h
@@ -0,0 +1,22 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2019 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.
+ */
+
+/*
+ * Intel Integrated Sensor Hub (ISH)
+ */
+struct drivers_intel_ish_config {
+	/* Firmware name used by kernel for loading ISH firmware */
+	const char *firmware_name;
+};
diff --git a/src/drivers/intel/ish/ish.c b/src/drivers/intel/ish/ish.c
new file mode 100644
index 0000000000..bc1b6fa3c3
--- /dev/null
+++ b/src/drivers/intel/ish/ish.c
@@ -0,0 +1,81 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2019 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/pci.h>
+#include <device/pci_ids.h>
+#include "chip.h"
+
+static void ish_fill_ssdt_generator(struct device *dev)
+{
+	struct drivers_intel_ish_config *config = dev->chip_info;
+	struct device *root = dev->bus->dev;
+	struct acpi_dp *dsd;
+
+	if (!dev->enabled || !config || !config->firmware_name)
+		return;
+
+	acpigen_write_scope(acpi_device_path(root));
+
+	dsd = acpi_dp_new_table("_DSD");
+	acpi_dp_add_string(dsd, "firmware-name", config->firmware_name);
+	acpi_dp_write(dsd);
+
+	acpigen_pop_len();	/* Scope */
+
+	printk(BIOS_INFO, "%s: Set firmware-name: %s\n",
+	       acpi_device_path(root), config->firmware_name);
+}
+
+static struct device_operations intel_ish_ops = {
+	.read_resources			= DEVICE_NOOP,
+	.set_resources			= DEVICE_NOOP,
+	.enable_resources		= DEVICE_NOOP,
+	.acpi_fill_ssdt_generator	= ish_fill_ssdt_generator,
+};
+
+static void intel_ish_enable(struct device *dev)
+{
+	/* This dev is a generic device that is a child to the ISH PCI device */
+	dev->ops = &intel_ish_ops;
+}
+
+/* Copy of default_pci_ops_dev with scan_bus addition */
+static const struct device_operations pci_ish_device_ops = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = pci_dev_init,
+	.scan_bus         = &scan_generic_bus, /* Non-default */
+	.ops_pci          = &pci_dev_ops_pci,
+};
+
+static const unsigned short pci_device_ids[] = {
+	PCI_DEVICE_ID_INTEL_CNL_ISHB,
+	0
+};
+
+static const struct pci_driver ish_intel_driver __pci_driver = {
+	.ops		= &pci_ish_device_ops,
+	.vendor		= PCI_VENDOR_ID_INTEL,
+	.devices	= pci_device_ids,
+};
+
+struct chip_operations drivers_intel_ish_ops = {
+	CHIP_NAME("Intel ISH Chip")
+	.enable_dev	= intel_ish_enable,
+};