Merge tag 'irq-core-2020-12-23' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-microblaze.git] / arch / mips / kernel / prom.c
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         strlcpy(mips_machine_name, name, 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         strlcpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible));
56         if (bus1) {
57                 strlcpy(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 #endif