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Wolfgang Denk7b64fef2006-10-24 14:21:16 +02001/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22#ifndef __ASM_GLOBAL_DATA_H__
23#define __ASM_GLOBAL_DATA_H__
24
25/*
26 * The following data structure is placed in some memory wich is
27 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
28 * some locked parts of the data cache) to allow for a minimum set of
29 * global variables during system initialization (until we have set
30 * up the memory controller so that we can use RAM).
31 *
32 * Keep it *SMALL* and remember to set CFG_GBL_DATA_SIZE > sizeof(gd_t)
33 */
34
35typedef struct global_data {
36 bd_t *bd;
37 unsigned long flags;
Wolfgang Denk7b64fef2006-10-24 14:21:16 +020038 unsigned long baudrate;
Haavard Skinnemoen1f4f2122006-11-20 15:53:10 +010039 unsigned long stack_end; /* highest stack address */
Wolfgang Denk7b64fef2006-10-24 14:21:16 +020040 unsigned long have_console; /* serial_init() was called */
41 unsigned long reloc_off; /* Relocation Offset */
42 unsigned long env_addr; /* Address of env struct */
43 unsigned long env_valid; /* Checksum of env valid? */
44 unsigned long cpu_hz; /* cpu core clock frequency */
45 void **jt; /* jump table */
46} gd_t;
47
48/*
49 * Global Data Flags
50 */
51#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
52#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
53#define GD_FLG_SILENT 0x00004 /* Silent mode */
54
55#define DECLARE_GLOBAL_DATA_PTR register gd_t *gd asm("r5")
56
57#endif /* __ASM_GLOBAL_DATA_H__ */