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wdenk2262cfe2002-11-18 00:14:45 +00001/*
2 * (C) Copyright 2002
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 CFG_GBL_DATA_SIZE > sizeof(gd_t)
34 */
35
36typedef struct {
37 bd_t *bd;
38 unsigned long flags;
39 unsigned long baudrate;
40 unsigned long have_console; /* serial_init() was called */
41 unsigned long reloc_off; /* Relocation Offset */
42 unsigned long env_addr; /* Address of Environment struct */
43 unsigned long env_valid; /* Checksum of Environment valid? */
44 unsigned long cpu_clk; /* CPU clock in Hz! */
45 unsigned long bus_clk;
46 unsigned long ram_size; /* RAM size */
47 unsigned long reset_status; /* reset status register at boot */
wdenk27b207f2003-07-24 23:38:38 +000048 void **jt; /* jump table */
wdenk2262cfe2002-11-18 00:14:45 +000049} 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 */
wdenkf72da342003-10-10 10:05:42 +000056#define GD_FLG_SILENT 0x00004 /* Silent mode */
wdenk2262cfe2002-11-18 00:14:45 +000057
58extern gd_t *global_data;
59
60#define DECLARE_GLOBAL_DATA_PTR gd_t *gd = global_data
61
62#endif /* __ASM_GBL_DATA_H */