[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/acpi/bgrt.c b/src/kernel/linux/v4.14/drivers/acpi/bgrt.c
new file mode 100644
index 0000000..75af783
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/acpi/bgrt.c
@@ -0,0 +1,125 @@
+/*
+ * BGRT boot graphic support
+ * Authors: Matthew Garrett, Josh Triplett <josh@joshtriplett.org>
+ * Copyright 2012 Red Hat, Inc <mjg@redhat.com>
+ * Copyright 2012 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/sysfs.h>
+#include <linux/efi-bgrt.h>
+
+static void *bgrt_image;
+static struct kobject *bgrt_kobj;
+
+static ssize_t show_version(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", bgrt_tab.version);
+}
+static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
+
+static ssize_t show_status(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", bgrt_tab.status);
+}
+static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
+
+static ssize_t show_type(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", bgrt_tab.image_type);
+}
+static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
+
+static ssize_t show_xoffset(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", bgrt_tab.image_offset_x);
+}
+static DEVICE_ATTR(xoffset, S_IRUGO, show_xoffset, NULL);
+
+static ssize_t show_yoffset(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", bgrt_tab.image_offset_y);
+}
+static DEVICE_ATTR(yoffset, S_IRUGO, show_yoffset, NULL);
+
+static ssize_t image_read(struct file *file, struct kobject *kobj,
+ struct bin_attribute *attr, char *buf, loff_t off, size_t count)
+{
+ memcpy(buf, attr->private + off, count);
+ return count;
+}
+
+static BIN_ATTR_RO(image, 0); /* size gets filled in later */
+
+static struct attribute *bgrt_attributes[] = {
+ &dev_attr_version.attr,
+ &dev_attr_status.attr,
+ &dev_attr_type.attr,
+ &dev_attr_xoffset.attr,
+ &dev_attr_yoffset.attr,
+ NULL,
+};
+
+static struct bin_attribute *bgrt_bin_attributes[] = {
+ &bin_attr_image,
+ NULL,
+};
+
+static const struct attribute_group bgrt_attribute_group = {
+ .attrs = bgrt_attributes,
+ .bin_attrs = bgrt_bin_attributes,
+};
+
+int __init acpi_parse_bgrt(struct acpi_table_header *table)
+{
+ efi_bgrt_init(table);
+ return 0;
+}
+
+static int __init bgrt_init(void)
+{
+ int ret;
+
+ if (!bgrt_tab.image_address)
+ return -ENODEV;
+
+ bgrt_image = memremap(bgrt_tab.image_address, bgrt_image_size,
+ MEMREMAP_WB);
+ if (!bgrt_image) {
+ pr_notice("Ignoring BGRT: failed to map image memory\n");
+ return -ENOMEM;
+ }
+
+ bin_attr_image.private = bgrt_image;
+ bin_attr_image.size = bgrt_image_size;
+
+ bgrt_kobj = kobject_create_and_add("bgrt", acpi_kobj);
+ if (!bgrt_kobj) {
+ ret = -EINVAL;
+ goto out_memmap;
+ }
+
+ ret = sysfs_create_group(bgrt_kobj, &bgrt_attribute_group);
+ if (ret)
+ goto out_kobject;
+
+ return 0;
+
+out_kobject:
+ kobject_put(bgrt_kobj);
+out_memmap:
+ memunmap(bgrt_image);
+ return ret;
+}
+device_initcall(bgrt_init);