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  * The following data structure is placed in some memory wich is
28  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
29  * some locked parts of the data cache) to allow for a minimum set of
30  * global variables during system initialization (until we have set
31  * up the memory controller so that we can use RAM).
32  *
33  * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
34  */
35 
36 typedef	struct	global_data {
37 	bd_t		*bd;
38 	unsigned long	flags;
39 	unsigned long	baudrate;
40 	unsigned long	cpu_clk;	/* CPU clock in Hz!		*/
41 	unsigned long	bus_clk;
42 #ifdef CONFIG_PCI
43 	unsigned long	pci_clk;
44 #endif
45 #ifdef CONFIG_EXTRA_CLOCK
46 	unsigned long	inp_clk;
47 	unsigned long	vco_clk;
48 	unsigned long	flb_clk;
49 #endif
50 #ifdef CONFIG_FSL_I2C
51 	unsigned long	i2c1_clk;
52 	unsigned long	i2c2_clk;
53 #endif
54 	phys_size_t	ram_size;	/* RAM size */
55 	unsigned long	reloc_off;	/* Relocation Offset */
56 	unsigned long	reset_status;	/* reset status register at boot	*/
57 	unsigned long	env_addr;	/* Address  of Environment struct	*/
58 	unsigned long	env_valid;	/* Checksum of Environment valid?	*/
59 	unsigned long	have_console;	/* serial_init() was called		*/
60 #ifdef CONFIG_PRE_CONSOLE_BUFFER
61 	unsigned long	precon_buf_idx;	/* Pre-Console buffer index */
62 #endif
63 #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
64 	unsigned long	fb_base;	/* Base addr of framebuffer memory */
65 #endif
66 #ifdef CONFIG_BOARD_TYPES
67 	unsigned long	board_type;
68 #endif
69 	void		**jt;		/* Standalone app jump table */
70 	char		env_buf[32];	/* buffer for getenv() before reloc. */
71 } gd_t;
72 
73 /*
74  * Global Data Flags
75  */
76 #define	GD_FLG_RELOC		0x00001	/* Code was relocated to RAM		*/
77 #define	GD_FLG_DEVINIT		0x00002	/* Devices have been initialized	*/
78 #define	GD_FLG_SILENT		0x00004	/* Silent mode				*/
79 #define	GD_FLG_POSTFAIL		0x00008	/* Critical POST test failed		*/
80 #define	GD_FLG_POSTSTOP		0x00010	/* POST seqeunce aborted		*/
81 #define	GD_FLG_LOGINIT		0x00020	/* Log Buffer has been initialized	*/
82 #define GD_FLG_DISABLE_CONSOLE	0x00040	/* Disable console (in & out)		*/
83 #define GD_FLG_ENV_READY	0x00080	/* Environment imported into hash table	*/
84 
85 #if 0
86 extern gd_t *global_data;
87 #define DECLARE_GLOBAL_DATA_PTR     gd_t *gd = global_data
88 #else
89 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("d7")
90 #endif
91 
92 #endif /* __ASM_GBL_DATA_H */
93