1/*
2 * (C) Copyright 2002-2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#ifndef	__ASM_GBL_DATA_H
25#define __ASM_GBL_DATA_H
26
27#include <asm/regdef.h>
28
29/*
30 * The following data structure is placed in some memory wich is
31 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
32 * some locked parts of the data cache) to allow for a minimum set of
33 * global variables during system initialization (until we have set
34 * up the memory controller so that we can use RAM).
35 *
36 * Keep it *SMALL* and remember to set CFG_GBL_DATA_SIZE > sizeof(gd_t)
37 */
38
39typedef	struct	global_data {
40	bd_t		*bd;
41	unsigned long	flags;
42	unsigned long	baudrate;
43	unsigned long	have_console;	/* serial_init() was called */
44	unsigned long	ram_size;	/* RAM size */
45	unsigned long	reloc_off;	/* Relocation Offset */
46	unsigned long	env_addr;	/* Address  of Environment struct */
47	unsigned long	env_valid;	/* Checksum of Environment valid? */
48	void		**jt;		/* jump table */
49} gd_t;
50
51/*
52 * Global Data Flags
53 */
54#define	GD_FLG_RELOC	0x00001		/* Code was relocated to RAM     */
55#define	GD_FLG_DEVINIT	0x00002		/* Devices have been initialized */
56#define	GD_FLG_SILENT	0x00004		/* Silent mode			 */
57
58#define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("k0")
59
60#endif /* __ASM_GBL_DATA_H */
61