1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * MIPS support for CONFIG_OF device tree support |
4 | * |
5 | * Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com> |
6 | */ |
7 | |
8 | #include <linux/init.h> |
9 | #include <linux/export.h> |
10 | #include <linux/errno.h> |
11 | #include <linux/types.h> |
12 | #include <linux/memblock.h> |
13 | #include <linux/debugfs.h> |
14 | #include <linux/of.h> |
15 | #include <linux/of_fdt.h> |
16 | #include <linux/of_platform.h> |
17 | |
18 | #include <asm/bootinfo.h> |
19 | #include <asm/page.h> |
20 | #include <asm/prom.h> |
21 | |
22 | static char mips_machine_name[64] = "Unknown" ; |
23 | |
24 | __init void mips_set_machine_name(const char *name) |
25 | { |
26 | if (name == NULL) |
27 | return; |
28 | |
29 | strscpy(p: mips_machine_name, q: name, size: sizeof(mips_machine_name)); |
30 | pr_info("MIPS: machine is %s\n" , mips_get_machine_name()); |
31 | } |
32 | |
33 | char *mips_get_machine_name(void) |
34 | { |
35 | return mips_machine_name; |
36 | } |
37 | |
38 | #ifdef CONFIG_USE_OF |
39 | |
40 | void __init __dt_setup_arch(void *bph) |
41 | { |
42 | if (!early_init_dt_scan(bph)) |
43 | return; |
44 | |
45 | mips_set_machine_name(of_flat_dt_get_machine_name()); |
46 | } |
47 | |
48 | int __init __dt_register_buses(const char *bus0, const char *bus1) |
49 | { |
50 | static struct of_device_id of_ids[3]; |
51 | |
52 | if (!of_have_populated_dt()) |
53 | panic("device tree not present" ); |
54 | |
55 | strscpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible)); |
56 | if (bus1) { |
57 | strscpy(of_ids[1].compatible, bus1, |
58 | sizeof(of_ids[1].compatible)); |
59 | } |
60 | |
61 | if (of_platform_populate(NULL, of_ids, NULL, NULL)) |
62 | panic("failed to populate DT" ); |
63 | |
64 | return 0; |
65 | } |
66 | |
67 | void __weak __init device_tree_init(void) |
68 | { |
69 | unflatten_and_copy_device_tree(); |
70 | } |
71 | |
72 | #endif |
73 | |