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* U-boot - global_data.h Declarations for global data of u-boot
* Copyright (c) 2005-2007 Analog Devices Inc.
* (C) Copyright 2000-2010
* Wolfgang Denk, DENX Software Engineering,
* See file CREDITS for list of people who contributed to this
* project.
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
#ifndef __ASM_GBL_DATA_H
#define __ASM_GBL_DATA_H
#include <asm/u-boot.h>
* The following data structure is placed in some memory wich is
* available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
* some locked parts of the data cache) to allow for a minimum set of
* global variables during system initialization (until we have set
* up the memory controller so that we can use RAM).
typedef struct global_data {
bd_t *bd;
unsigned long flags;
unsigned long board_type;
unsigned int baudrate;
unsigned long have_console; /* serial_init() was called */
unsigned long precon_buf_idx; /* Pre-Console buffer index */
phys_size_t ram_size; /* RAM size */
unsigned long env_addr; /* Address of Environment struct */
unsigned long env_valid; /* Checksum of Environment valid? */
#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
unsigned long post_log_word; /* Record POST activities */
unsigned long post_log_res; /* success of POST test */
unsigned long post_init_f_time; /* When post_init_f started */
void **jt; /* jump table */
char env_buf[32]; /* buffer for getenv() before reloc. */
} gd_t;
#include <asm-generic/global_data_flags.h>
#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("P3")