[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/nvdimm/e820.c b/src/kernel/linux/v4.14/drivers/nvdimm/e820.c
new file mode 100644
index 0000000..6f9a6ff
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/nvdimm/e820.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2015, Christoph Hellwig.
+ * Copyright (c) 2015, Intel Corporation.
+ */
+#include <linux/platform_device.h>
+#include <linux/memory_hotplug.h>
+#include <linux/libnvdimm.h>
+#include <linux/module.h>
+
+static const struct attribute_group *e820_pmem_attribute_groups[] = {
+ &nvdimm_bus_attribute_group,
+ NULL,
+};
+
+static const struct attribute_group *e820_pmem_region_attribute_groups[] = {
+ &nd_region_attribute_group,
+ &nd_device_attribute_group,
+ NULL,
+};
+
+static int e820_pmem_remove(struct platform_device *pdev)
+{
+ struct nvdimm_bus *nvdimm_bus = platform_get_drvdata(pdev);
+
+ nvdimm_bus_unregister(nvdimm_bus);
+ return 0;
+}
+
+#ifdef CONFIG_MEMORY_HOTPLUG
+static int e820_range_to_nid(resource_size_t addr)
+{
+ return memory_add_physaddr_to_nid(addr);
+}
+#else
+static int e820_range_to_nid(resource_size_t addr)
+{
+ return NUMA_NO_NODE;
+}
+#endif
+
+static int e820_pmem_probe(struct platform_device *pdev)
+{
+ static struct nvdimm_bus_descriptor nd_desc;
+ struct device *dev = &pdev->dev;
+ struct nvdimm_bus *nvdimm_bus;
+ struct resource *p;
+
+ nd_desc.attr_groups = e820_pmem_attribute_groups;
+ nd_desc.provider_name = "e820";
+ nd_desc.module = THIS_MODULE;
+ nvdimm_bus = nvdimm_bus_register(dev, &nd_desc);
+ if (!nvdimm_bus)
+ goto err;
+ platform_set_drvdata(pdev, nvdimm_bus);
+
+ for (p = iomem_resource.child; p ; p = p->sibling) {
+ struct nd_region_desc ndr_desc;
+
+ if (p->desc != IORES_DESC_PERSISTENT_MEMORY_LEGACY)
+ continue;
+
+ memset(&ndr_desc, 0, sizeof(ndr_desc));
+ ndr_desc.res = p;
+ ndr_desc.attr_groups = e820_pmem_region_attribute_groups;
+ ndr_desc.numa_node = e820_range_to_nid(p->start);
+ set_bit(ND_REGION_PAGEMAP, &ndr_desc.flags);
+ if (!nvdimm_pmem_region_create(nvdimm_bus, &ndr_desc))
+ goto err;
+ }
+
+ return 0;
+
+ err:
+ nvdimm_bus_unregister(nvdimm_bus);
+ dev_err(dev, "failed to register legacy persistent memory ranges\n");
+ return -ENXIO;
+}
+
+static struct platform_driver e820_pmem_driver = {
+ .probe = e820_pmem_probe,
+ .remove = e820_pmem_remove,
+ .driver = {
+ .name = "e820_pmem",
+ },
+};
+
+module_platform_driver(e820_pmem_driver);
+
+MODULE_ALIAS("platform:e820_pmem*");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Intel Corporation");