2 * Copyright (c) 2015, Christoph Hellwig.
4 #include <linux/memblock.h>
5 #include <linux/platform_device.h>
6 #include <linux/slab.h>
8 #include <asm/page_types.h>
11 static __init void register_pmem_device(struct resource *res)
13 struct platform_device *pdev;
16 pdev = platform_device_alloc("pmem", PLATFORM_DEVID_AUTO);
20 error = platform_device_add_resources(pdev, res, 1);
24 error = platform_device_add(pdev);
30 dev_warn(&pdev->dev, "failed to add 'pmem' (persistent memory) device!\n");
31 platform_device_put(pdev);
34 static __init int register_pmem_devices(void)
38 for (i = 0; i < e820.nr_map; i++) {
39 struct e820entry *ei = &e820.map[i];
41 if (ei->type == E820_PRAM) {
42 struct resource res = {
43 .flags = IORESOURCE_MEM,
45 .end = ei->addr + ei->size - 1,
47 register_pmem_device(&res);
53 device_initcall(register_pmem_devices);