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wdenk507bbe32004-04-18 21:13:41 +00001/*
2 * (C) Copyright 2004 Atmark Techno, Inc.
3 *
4 * Yasushi SHOJI <yashi@atmark-techno.com>
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24
25#ifndef __ASM_GBL_DATA_H
26#define __ASM_GBL_DATA_H
27/*
28 * The following data structure is placed in some memory wich is
29 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
30 * some locked parts of the data cache) to allow for a minimum set of
31 * global variables during system initialization (until we have set
32 * up the memory controller so that we can use RAM).
33 *
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020034 * Keep it *SMALL* and remember to set CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t)
wdenk507bbe32004-04-18 21:13:41 +000035 */
36
37typedef struct global_data {
38 bd_t *bd;
39 unsigned long flags;
40 unsigned long baudrate;
41 unsigned long have_console; /* serial_init() was called */
42 unsigned long reloc_off; /* Relocation Offset */
43 unsigned long env_addr; /* Address of Environment struct */
44 unsigned long env_valid; /* Checksum of Environment valid? */
45 unsigned long fb_base; /* base address of frame buffer */
46 void **jt; /* jump table */
47} gd_t;
48
49/*
50 * Global Data Flags
51 */
52#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
53#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
54#define GD_FLG_SILENT 0x00004 /* Silent mode */
Yuri Tikhonovb428f6a2008-02-04 14:11:03 +010055#define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
Yuri Tikhonov28a38502008-05-08 15:45:26 +020056#define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
Yuri Tikhonov0e15ddd2008-05-08 15:46:42 +020057#define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
Mark Jacksonf5c3ba72008-08-25 19:21:30 +010058#define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
wdenk507bbe32004-04-18 21:13:41 +000059
60#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r31")
61
62#endif /* __ASM_GBL_DATA_H */