1 // SPDX-License-Identifier: GPL-2.0-only
2
3 #include <linux/init.h>
4 #include <linux/of_fdt.h>
5 #include <linux/printk.h>
6 #include <linux/memblock.h>
7 #include <init.h>
8
9 #include "um_arch.h"
10
11 static char *dtb __initdata;
12
13 void uml_dtb_init(void)
14 {
15 long long size;
16 void *area;
17
18 area = uml_load_file(dtb, &size);
19 if (area) {
20 if (!early_init_dt_scan(area)) {
21 pr_err("invalid DTB %s\n", dtb);
22 memblock_free(area, size);
23 return;
24 }
25
26 early_init_fdt_scan_reserved_mem();
27 }
28
29 unflatten_device_tree();
30 }
31
32 static int __init uml_dtb_setup(char *line, int *add)
33 {
34 dtb = line;
35 return 0;
36 }
37
38 __uml_setup("dtb=", uml_dtb_setup,
39 "dtb=<file>\n"
40 " Boot the kernel with the devicetree blob from the specified file.\n"
41 );
42
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.