1 /*
2  * Copyright (c) 2011 The Chromium OS Authors.
3  *
4  * (C) Copyright 2002-2010
5  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6  *
7  * See file CREDITS for list of people who contributed to this
8  * project.
9  *
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License as
12  * published by the Free Software Foundation; either version 2 of
13  * the License, or (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23  * MA 02111-1307 USA
24  */
25 
26 #ifndef	__ASM_GBL_DATA_H
27 #define __ASM_GBL_DATA_H
28 /*
29  * The following data structure is placed in some memory wich is
30  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
31  * some locked parts of the data cache) to allow for a minimum set of
32  * global variables during system initialization (until we have set
33  * up the memory controller so that we can use RAM).
34  */
35 
36 typedef	struct global_data {
37 	bd_t		*bd;
38 	unsigned long	flags;
39 	unsigned long	baudrate;
40 	unsigned long	have_console;	/* serial_init() was called */
41 	unsigned long	env_addr;	/* Address  of Environment struct */
42 	unsigned long	env_valid;	/* Checksum of Environment valid? */
43 	unsigned long	fb_base;	/* base address of frame buffer */
44 	u8		*ram_buf;	/* emulated RAM buffer */
45 	phys_size_t	ram_size;	/* RAM size */
46 	const void	*fdt_blob;	/* Our device tree, NULL if none */
47 	void		**jt;		/* jump table */
48 	char		env_buf[32];	/* buffer for getenv() before reloc. */
49 } gd_t;
50 
51 #include <asm-generic/global_data_flags.h>
52 
53 #define DECLARE_GLOBAL_DATA_PTR     extern gd_t *gd
54 
55 #endif /* __ASM_GBL_DATA_H */
56