1 /*
2  * (C) Copyright 2002-2010
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 GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
37  */
38 
39 typedef	struct	global_data {
40 	bd_t		*bd;
41 	unsigned long	flags;
42 #ifdef CONFIG_JZSOC
43 	/* There are other clocks in the jz4740 */
44 	unsigned long	cpu_clk;	/* CPU core clock */
45 	unsigned long	sys_clk;	/* System bus clock */
46 	unsigned long	per_clk;	/* Peripheral bus clock */
47 	unsigned long	mem_clk;	/* Memory bus clock */
48 	unsigned long	dev_clk;	/* Device clock */
49 	/* "static data" needed by most of timer.c */
50 	unsigned long	tbl;
51 	unsigned long	lastinc;
52 #endif
53 	unsigned long	baudrate;
54 	unsigned long	have_console;	/* serial_init() was called */
55 #ifdef CONFIG_PRE_CONSOLE_BUFFER
56 	unsigned long	precon_buf_idx;	/* Pre-Console buffer index */
57 #endif
58 	phys_size_t	ram_size;	/* RAM size */
59 	unsigned long	reloc_off;	/* Relocation Offset */
60 	unsigned long	env_addr;	/* Address  of Environment struct */
61 	unsigned long	env_valid;	/* Checksum of Environment valid? */
62 	void		**jt;		/* jump table */
63 	char		env_buf[32];	/* buffer for getenv() before reloc. */
64 } gd_t;
65 
66 /*
67  * Global Data Flags
68  */
69 #define	GD_FLG_RELOC		0x00001	/* Code was relocated to RAM		*/
70 #define	GD_FLG_DEVINIT		0x00002	/* Devices have been initialized	*/
71 #define	GD_FLG_SILENT		0x00004	/* Silent mode				*/
72 #define	GD_FLG_POSTFAIL		0x00008	/* Critical POST test failed		*/
73 #define	GD_FLG_POSTSTOP		0x00010	/* POST seqeunce aborted		*/
74 #define	GD_FLG_LOGINIT		0x00020	/* Log Buffer has been initialized	*/
75 #define GD_FLG_DISABLE_CONSOLE	0x00040	/* Disable console (in & out)		*/
76 #define GD_FLG_ENV_READY	0x00080	/* Environment imported into hash table	*/
77 
78 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("k0")
79 
80 #endif /* __ASM_GBL_DATA_H */
81