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 CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t)
37  */
38 
39 typedef	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 	phys_size_t	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 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed	 */
58 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted	 */
59 #define	GD_FLG_LOGINIT	0x00020		/* Log Buf has been initialized	 */
60 #define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
61 
62 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("k0")
63 
64 #endif /* __ASM_GBL_DATA_H */
65