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Wolfgang Denk6cb142f2006-03-12 02:12:27 +01001/*
2 * U-boot - global_data.h Declarations for global data of u-boot
3 *
Aubrey Li155fd762007-04-05 18:31:18 +08004 * Copyright (c) 2005-2007 Analog Devices Inc.
Wolfgang Denk6cb142f2006-03-12 02:12:27 +01005 *
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
Aubrey Li155fd762007-04-05 18:31:18 +080024 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
25 * MA 02110-1301 USA
Wolfgang Denk6cb142f2006-03-12 02:12:27 +010026 */
27
28#ifndef __ASM_GBL_DATA_H
29#define __ASM_GBL_DATA_H
30
Wolfgang Denk6cb142f2006-03-12 02:12:27 +010031/*
32 * The following data structure is placed in some memory wich is
33 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
34 * some locked parts of the data cache) to allow for a minimum set of
35 * global variables during system initialization (until we have set
36 * up the memory controller so that we can use RAM).
37 *
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020038 * Keep it *SMALL* and remember to set CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t)
Wolfgang Denk6cb142f2006-03-12 02:12:27 +010039 */
40typedef struct global_data {
41 bd_t *bd;
42 unsigned long flags;
43 unsigned long board_type;
44 unsigned long baudrate;
45 unsigned long have_console; /* serial_init() was called */
Becky Bruceb57ca3e2008-06-09 20:37:16 -050046 phys_size_t ram_size; /* RAM size */
Wolfgang Denk6cb142f2006-03-12 02:12:27 +010047 unsigned long reloc_off; /* Relocation Offset */
Aubrey.Li3f0606a2007-03-09 13:38:44 +080048 unsigned long env_addr; /* Address of Environment struct */
Wolfgang Denk6cb142f2006-03-12 02:12:27 +010049 unsigned long env_valid; /* Checksum of Environment valid? */
Aubrey.Li3f0606a2007-03-09 13:38:44 +080050#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
51 unsigned long post_log_word; /* Record POST activities */
52 unsigned long post_init_f_time; /* When post_init_f started */
53#endif
54
55 void **jt; /* jump table */
Wolfgang Denk6cb142f2006-03-12 02:12:27 +010056} gd_t;
57
58/*
59 * Global Data Flags
60 */
61#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
62#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
63#define GD_FLG_SILENT 0x00004 /* Silent mode */
Yuri Tikhonovb428f6a2008-02-04 14:11:03 +010064#define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
Yuri Tikhonov28a38502008-05-08 15:45:26 +020065#define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
Yuri Tikhonov0e15ddd2008-05-08 15:46:42 +020066#define GD_FLG_LOGINIT 0x00020 /* Log Buf has been initialized */
Mark Jacksonf5c3ba72008-08-25 19:21:30 +010067#define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
Wolfgang Denk6cb142f2006-03-12 02:12:27 +010068
Robin Getzc4db3352009-08-17 15:23:02 +000069#define DECLARE_GLOBAL_DATA_PTR register gd_t * volatile gd asm ("P3")
Wolfgang Denk6cb142f2006-03-12 02:12:27 +010070
71#endif