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/page.h> 22 #include <asm/prom.h> 23 24 static char mips_machine_name[64] = "Unknown"; 25 26 __init void mips_set_machine_name(const char *name) 27 { 28 if (name == NULL) 29 return; 30 31 strlcpy(mips_machine_name, name, sizeof(mips_machine_name)); 32 pr_info("MIPS: machine is %s\n", mips_get_machine_name()); 33 } 34 35 char *mips_get_machine_name(void) 36 { 37 return mips_machine_name; 38 } 39 40 #ifdef CONFIG_OF 41 void __init early_init_dt_add_memory_arch(u64 base, u64 size) 42 { 43 return add_memory_region(base, size, BOOT_MEM_RAM); 44 } 45 46 void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) 47 { 48 return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS)); 49 } 50 51 void __init __dt_setup_arch(void *bph) 52 { 53 if (!early_init_dt_scan(bph)) 54 return; 55 56 mips_set_machine_name(of_flat_dt_get_machine_name()); 57 } 58 59 int __init __dt_register_buses(const char *bus0, const char *bus1) 60 { 61 static struct of_device_id of_ids[3]; 62 63 if (!of_have_populated_dt()) 64 panic("device tree not present"); 65 66 strlcpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible)); 67 if (bus1) { 68 strlcpy(of_ids[1].compatible, bus1, 69 sizeof(of_ids[1].compatible)); 70 } 71 72 if (of_platform_populate(NULL, of_ids, NULL, NULL)) 73 panic("failed to populate DT"); 74 75 return 0; 76 } 77 78 #endif 79