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Daniel Hellstrom9d7c6b22008-03-28 09:47:00 +01001/*
2 * (C) Copyright 2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2007
6 * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27#ifndef __ASM_GBL_DATA_H
28#define __ASM_GBL_DATA_H
29
30#include "asm/types.h"
31
32/*
33 * The following data structure is placed in some memory wich is
34 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
35 * some locked parts of the data cache) to allow for a minimum set of
36 * global variables during system initialization (until we have set
37 * up the memory controller so that we can use RAM).
38 *
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +020039 * Keep it *SMALL* and remember to set CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t)
Daniel Hellstrom9d7c6b22008-03-28 09:47:00 +010040 */
41
42typedef struct global_data {
43 bd_t *bd;
44 unsigned long flags;
45 unsigned long baudrate;
46 unsigned long cpu_clk; /* CPU clock in Hz! */
47 unsigned long bus_clk;
48
Becky Brucea36601e2008-06-09 20:37:16 -050049 phys_size_t ram_size; /* RAM size */
Daniel Hellstrom9d7c6b22008-03-28 09:47:00 +010050 unsigned long reloc_off; /* Relocation Offset */
51 unsigned long reset_status; /* reset status register at boot */
52 unsigned long env_addr; /* Address of Environment struct */
53 unsigned long env_valid; /* Checksum of Environment valid? */
54 unsigned long have_console; /* serial_init() was called */
55
56#if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
57 unsigned long fb_base; /* Base address of framebuffer memory */
58#endif
59#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
60 unsigned long post_log_word; /* Record POST activities */
61 unsigned long post_init_f_time; /* When post_init_f started */
62#endif
63#ifdef CONFIG_BOARD_TYPES
64 unsigned long board_type;
65#endif
66#ifdef CONFIG_MODEM_SUPPORT
67 unsigned long do_mdm_init;
68 unsigned long be_quiet;
69#endif
70#ifdef CONFIG_LWMON
71 unsigned long kbd_status;
72#endif
73 void **jt; /* jump table */
74} gd_t;
75
76/*
77 * Global Data Flags
78 */
79#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
80#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
81#define GD_FLG_SILENT 0x00004 /* Silent mode */
Yuri Tikhonovbc439b02008-05-08 15:45:26 +020082#define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
83#define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
Yuri Tikhonov35d81ce2008-05-08 15:46:42 +020084#define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
Mark Jackson5de56212008-08-25 19:21:30 +010085#define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
Daniel Hellstrom9d7c6b22008-03-28 09:47:00 +010086
87#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("%g7")
88
89#endif /* __ASM_GBL_DATA_H */