2 * U-boot - global_data.h Declarations for global data of u-boot
4 * Copyright (c) 2005 blackfin.uclinux.org
6 * (C) Copyright 2000-2004
7 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
9 * See file CREDITS for list of people who contributed to this
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.
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.
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., 59 Temple Place, Suite 330, Boston,
28 #ifndef __ASM_GBL_DATA_H
29 #define __ASM_GBL_DATA_H
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).
40 * Keep it *SMALL* and remember to set CFG_GBL_DATA_SIZE > sizeof(gd_t)
42 typedef struct global_data {
45 unsigned long board_type;
46 unsigned long baudrate;
47 unsigned long have_console; /* serial_init() was called */
48 unsigned long ram_size; /* RAM size */
49 unsigned long reloc_off; /* Relocation Offset */
50 unsigned long env_addr; /* Address of Environment struct */
51 unsigned long env_valid; /* Checksum of Environment valid? */
52 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
53 unsigned long post_log_word; /* Record POST activities */
54 unsigned long post_init_f_time; /* When post_init_f started */
57 void **jt; /* jump table */
63 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
64 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
65 #define GD_FLG_SILENT 0x00004 /* Silent mode */
67 #define DECLARE_GLOBAL_DATA_PTR register gd_t * volatile gd asm ("P5")