1 /*
2 * MIPS support for CONFIG_OF device tree support
3 *
4 * Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 #include <linux/init.h>
12 #include <linux/export.h>
13 #include <linux/errno.h>
14 #include <linux/types.h>
15 #include <linux/bootmem.h>
16 #include <linux/debugfs.h>
17 #include <linux/of.h>
18 #include <linux/of_fdt.h>
19 #include <linux/of_platform.h>
20
21 #include <asm/bootinfo.h>
22 #include <asm/page.h>
23 #include <asm/prom.h>
24
25 static char mips_machine_name[64] = "Unknown";
26
mips_set_machine_name(const char * name)27 __init void mips_set_machine_name(const char *name)
28 {
29 if (name == NULL)
30 return;
31
32 strlcpy(mips_machine_name, name, sizeof(mips_machine_name));
33 pr_info("MIPS: machine is %s\n", mips_get_machine_name());
34 }
35
mips_get_machine_name(void)36 char *mips_get_machine_name(void)
37 {
38 return mips_machine_name;
39 }
40
41 #ifdef CONFIG_USE_OF
early_init_dt_add_memory_arch(u64 base,u64 size)42 void __init early_init_dt_add_memory_arch(u64 base, u64 size)
43 {
44 return add_memory_region(base, size, BOOT_MEM_RAM);
45 }
46
early_init_dt_reserve_memory_arch(phys_addr_t base,phys_addr_t size,bool nomap)47 int __init early_init_dt_reserve_memory_arch(phys_addr_t base,
48 phys_addr_t size, bool nomap)
49 {
50 add_memory_region(base, size, BOOT_MEM_RESERVED);
51 return 0;
52 }
53
__dt_setup_arch(void * bph)54 void __init __dt_setup_arch(void *bph)
55 {
56 if (!early_init_dt_scan(bph))
57 return;
58
59 mips_set_machine_name(of_flat_dt_get_machine_name());
60 }
61
__dt_register_buses(const char * bus0,const char * bus1)62 int __init __dt_register_buses(const char *bus0, const char *bus1)
63 {
64 static struct of_device_id of_ids[3];
65
66 if (!of_have_populated_dt())
67 panic("device tree not present");
68
69 strlcpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible));
70 if (bus1) {
71 strlcpy(of_ids[1].compatible, bus1,
72 sizeof(of_ids[1].compatible));
73 }
74
75 if (of_platform_populate(NULL, of_ids, NULL, NULL))
76 panic("failed to populate DT");
77
78 return 0;
79 }
80
81 #endif
82
