1 /* 2 * U-boot - global_data.h Declarations for global data of u-boot 3 * 4 * Copyright (c) 2005-2007 Analog Devices Inc. 5 * 6 * (C) Copyright 2000-2004 7 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 8 * 9 * See file CREDITS for list of people who contributed to this 10 * project. 11 * 12 * This program is free software; you can redistribute it and/or 13 * modify it under the terms of the GNU General Public License as 14 * published by the Free Software Foundation; either version 2 of 15 * the License, or (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, 25 * MA 02110-1301 USA 26 */ 27 28 #ifndef __ASM_GBL_DATA_H 29 #define __ASM_GBL_DATA_H 30 31 #include <asm/u-boot.h> 32 33 /* 34 * The following data structure is placed in some memory wich is 35 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 36 * some locked parts of the data cache) to allow for a minimum set of 37 * global variables during system initialization (until we have set 38 * up the memory controller so that we can use RAM). 39 * 40 * Keep it *SMALL* and remember to set CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t) 41 */ 42 typedef struct global_data { 43 bd_t *bd; 44 unsigned long flags; 45 unsigned long board_type; 46 unsigned long baudrate; 47 unsigned long have_console; /* serial_init() was called */ 48 phys_size_t ram_size; /* RAM size */ 49 unsigned long env_addr; /* Address of Environment struct */ 50 unsigned long env_valid; /* Checksum of Environment valid? */ 51 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) 52 unsigned long post_log_word; /* Record POST activities */ 53 unsigned long post_init_f_time; /* When post_init_f started */ 54 #endif 55 56 void **jt; /* jump table */ 57 } gd_t; 58 59 /* 60 * Global Data Flags 61 */ 62 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 63 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 64 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 65 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 66 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 67 #define GD_FLG_LOGINIT 0x00020 /* Log Buf has been initialized */ 68 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 69 70 #define DECLARE_GLOBAL_DATA_PTR register gd_t * volatile gd asm ("P3") 71 72 #endif 73