2 * U-boot - global_data.h Declarations for global data of u-boot
4 * Copyright (c) 2005-2007 Analog Devices Inc.
6 * (C) Copyright 2000-2010
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., 51 Franklin St, Fifth Floor, Boston,
28 #ifndef __ASM_GBL_DATA_H
29 #define __ASM_GBL_DATA_H
31 #include <asm/u-boot.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 typedef struct global_data {
43 unsigned long board_type;
44 unsigned int baudrate;
45 unsigned long have_console; /* serial_init() was called */
46 #ifdef CONFIG_PRE_CONSOLE_BUFFER
47 unsigned long precon_buf_idx; /* Pre-Console buffer index */
49 phys_size_t ram_size; /* RAM size */
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_log_res; /* success of POST test */
55 unsigned long post_init_f_time; /* When post_init_f started */
58 void **jt; /* jump table */
59 char env_buf[32]; /* buffer for getenv() before reloc. */
62 #include <asm-generic/global_data_flags.h>
64 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("P3")