1f2ffa5abSDezhong Diao /* 2f2ffa5abSDezhong Diao * MIPS support for CONFIG_OF device tree support 3f2ffa5abSDezhong Diao * 4f2ffa5abSDezhong Diao * Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com> 5f2ffa5abSDezhong Diao * 6f2ffa5abSDezhong Diao * This program is free software; you can redistribute it and/or modify 7f2ffa5abSDezhong Diao * it under the terms of the GNU General Public License version 2 as 8f2ffa5abSDezhong Diao * published by the Free Software Foundation. 9f2ffa5abSDezhong Diao */ 10f2ffa5abSDezhong Diao 11f2ffa5abSDezhong Diao #include <linux/init.h> 1273bc256dSPaul Gortmaker #include <linux/export.h> 13f2ffa5abSDezhong Diao #include <linux/errno.h> 14f2ffa5abSDezhong Diao #include <linux/types.h> 15f2ffa5abSDezhong Diao #include <linux/bootmem.h> 16f2ffa5abSDezhong Diao #include <linux/debugfs.h> 17f2ffa5abSDezhong Diao #include <linux/of.h> 18f2ffa5abSDezhong Diao #include <linux/of_fdt.h> 1984988c06SKevin Cernekee #include <linux/of_platform.h> 20f2ffa5abSDezhong Diao 2101306aeaSRob Herring #include <asm/bootinfo.h> 22f2ffa5abSDezhong Diao #include <asm/page.h> 23f2ffa5abSDezhong Diao #include <asm/prom.h> 24f2ffa5abSDezhong Diao 259169a5d0SJohn Crispin static char mips_machine_name[64] = "Unknown"; 269169a5d0SJohn Crispin 279169a5d0SJohn Crispin __init void mips_set_machine_name(const char *name) 289169a5d0SJohn Crispin { 299169a5d0SJohn Crispin if (name == NULL) 309169a5d0SJohn Crispin return; 319169a5d0SJohn Crispin 3241c8366bSChen Gang strlcpy(mips_machine_name, name, sizeof(mips_machine_name)); 339169a5d0SJohn Crispin pr_info("MIPS: machine is %s\n", mips_get_machine_name()); 349169a5d0SJohn Crispin } 359169a5d0SJohn Crispin 369169a5d0SJohn Crispin char *mips_get_machine_name(void) 379169a5d0SJohn Crispin { 389169a5d0SJohn Crispin return mips_machine_name; 399169a5d0SJohn Crispin } 409169a5d0SJohn Crispin 419169a5d0SJohn Crispin #ifdef CONFIG_OF 42f2ffa5abSDezhong Diao void __init early_init_dt_add_memory_arch(u64 base, u64 size) 43f2ffa5abSDezhong Diao { 44f2ffa5abSDezhong Diao return add_memory_region(base, size, BOOT_MEM_RAM); 45f2ffa5abSDezhong Diao } 46f2ffa5abSDezhong Diao 47672c5446SGrant Likely void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) 48f2ffa5abSDezhong Diao { 49672c5446SGrant Likely return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS)); 50f2ffa5abSDezhong Diao } 51f2ffa5abSDezhong Diao 520cdde839SRob Herring void __init __dt_setup_arch(void *bph) 53f2ffa5abSDezhong Diao { 54f75813c0SRob Herring if (!early_init_dt_scan(bph)) 55f75813c0SRob Herring return; 569169a5d0SJohn Crispin 5797e7f455SRob Herring mips_set_machine_name(of_flat_dt_get_machine_name()); 58f2ffa5abSDezhong Diao } 5984988c06SKevin Cernekee 6084988c06SKevin Cernekee int __init __dt_register_buses(const char *bus0, const char *bus1) 6184988c06SKevin Cernekee { 6284988c06SKevin Cernekee static struct of_device_id of_ids[3]; 6384988c06SKevin Cernekee 6484988c06SKevin Cernekee if (!of_have_populated_dt()) 6584988c06SKevin Cernekee panic("device tree not present"); 6684988c06SKevin Cernekee 6784988c06SKevin Cernekee strlcpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible)); 689127dc47SKevin Cernekee if (bus1) { 699127dc47SKevin Cernekee strlcpy(of_ids[1].compatible, bus1, 709127dc47SKevin Cernekee sizeof(of_ids[1].compatible)); 719127dc47SKevin Cernekee } 7284988c06SKevin Cernekee 7384988c06SKevin Cernekee if (of_platform_populate(NULL, of_ids, NULL, NULL)) 7484988c06SKevin Cernekee panic("failed to populate DT"); 7584988c06SKevin Cernekee 7684988c06SKevin Cernekee return 0; 7784988c06SKevin Cernekee } 7884988c06SKevin Cernekee 799169a5d0SJohn Crispin #endif 80