1/*
 2 * Copyright (c) 2015, Christoph Hellwig.
 3 * Copyright (c) 2015, Intel Corporation.
 4 */
 5#include <linux/platform_device.h>
 6#include <linux/module.h>
 7#include <linux/ioport.h>
 8
 9static int found(u64 start, u64 end, void *data)
10{
11	return 1;
12}
13
14static __init int register_e820_pmem(void)
15{
16	struct platform_device *pdev;
17	int rc;
18
19	rc = walk_iomem_res_desc(IORES_DESC_PERSISTENT_MEMORY_LEGACY,
20				 IORESOURCE_MEM, 0, -1, NULL, found);
21	if (rc <= 0)
22		return 0;
23
24	/*
25	 * See drivers/nvdimm/e820.c for the implementation, this is
26	 * simply here to trigger the module to load on demand.
27	 */
28	pdev = platform_device_alloc("e820_pmem", -1);
29	return platform_device_add(pdev);
30}
31device_initcall(register_e820_pmem);