2 * MIPS support for CONFIG_OF device tree support
4 * Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com>
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.
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>
18 #include <linux/of_fdt.h>
19 #include <linux/of_platform.h>
21 #include <asm/bootinfo.h>
25 static char mips_machine_name[64] = "Unknown";
27 __init void mips_set_machine_name(const char *name)
32 strlcpy(mips_machine_name, name, sizeof(mips_machine_name));
33 pr_info("MIPS: machine is %s\n", mips_get_machine_name());
36 char *mips_get_machine_name(void)
38 return mips_machine_name;
42 void __init early_init_dt_add_memory_arch(u64 base, u64 size)
44 if (base >= PHYS_ADDR_MAX) {
45 pr_warn("Trying to add an invalid memory region, skipped\n");
49 /* Truncate the passed memory region instead of type casting */
50 if (base + size - 1 >= PHYS_ADDR_MAX || base + size < base) {
51 pr_warn("Truncate memory region %llx @ %llx to size %llx\n",
52 size, base, PHYS_ADDR_MAX - base);
53 size = PHYS_ADDR_MAX - base;
56 add_memory_region(base, size, BOOT_MEM_RAM);
59 int __init early_init_dt_reserve_memory_arch(phys_addr_t base,
60 phys_addr_t size, bool nomap)
62 add_memory_region(base, size, BOOT_MEM_RESERVED);
66 void __init __dt_setup_arch(void *bph)
68 if (!early_init_dt_scan(bph))
71 mips_set_machine_name(of_flat_dt_get_machine_name());
74 int __init __dt_register_buses(const char *bus0, const char *bus1)
76 static struct of_device_id of_ids[3];
78 if (!of_have_populated_dt())
79 panic("device tree not present");
81 strlcpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible));
83 strlcpy(of_ids[1].compatible, bus1,
84 sizeof(of_ids[1].compatible));
87 if (of_platform_populate(NULL, of_ids, NULL, NULL))
88 panic("failed to populate DT");