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wdenk0157ced2002-10-21 17:04:47 +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 *
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020033 * Keep it *SMALL* and remember to set CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t)
wdenk0157ced2002-10-21 17:04:47 +000034 */
35
36typedef struct global_data {
37 bd_t *bd;
38 unsigned long flags;
39 unsigned long baudrate;
40 unsigned long have_console; /* serial_init() was called */
wdenk0157ced2002-10-21 17:04:47 +000041 unsigned long env_addr; /* Address of Environment struct */
42 unsigned long env_valid; /* Checksum of Environment valid? */
wdenk0157ced2002-10-21 17:04:47 +000043 unsigned long fb_base; /* base address of frame buffer */
wdenk71f95112003-06-15 22:40:42 +000044#ifdef CONFIG_VFD
wdenk6069ff22003-02-28 00:49:47 +000045 unsigned char vfd_type; /* display type */
wdenk0157ced2002-10-21 17:04:47 +000046#endif
47#if 0
48 unsigned long cpu_clk; /* CPU clock in Hz! */
49 unsigned long bus_clk;
Becky Bruceb57ca3e2008-06-09 20:37:16 -050050 phys_size_t ram_size; /* RAM size */
wdenk0157ced2002-10-21 17:04:47 +000051 unsigned long reset_status; /* reset status register at boot */
52#endif
wdenk27b207f2003-07-24 23:38:38 +000053 void **jt; /* jump table */
wdenk0157ced2002-10-21 17:04:47 +000054} gd_t;
55
56/*
57 * Global Data Flags
58 */
59#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
60#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
wdenkf72da342003-10-10 10:05:42 +000061#define GD_FLG_SILENT 0x00004 /* Silent mode */
Yuri Tikhonovb428f6a2008-02-04 14:11:03 +010062#define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
Yuri Tikhonov28a38502008-05-08 15:45:26 +020063#define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
Yuri Tikhonov0e15ddd2008-05-08 15:46:42 +020064#define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
Mark Jacksonf5c3ba72008-08-25 19:21:30 +010065#define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
wdenk0157ced2002-10-21 17:04:47 +000066
Wolfgang Denk0be248f2006-03-07 00:22:36 +010067#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r8")
wdenk0157ced2002-10-21 17:04:47 +000068
69#endif /* __ASM_GBL_DATA_H */