2 * (C) Copyright 2002-2010
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
24 #ifndef __ASM_GBL_DATA_H
25 #define __ASM_GBL_DATA_H
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).
33 * Keep it *SMALL* and remember to set CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t)
41 unsigned long baudrate;
42 unsigned long have_console; /* serial_init() was called */
43 unsigned long reloc_off; /* Relocation Offset */
44 unsigned long env_addr; /* Address of Environment struct */
45 unsigned long env_valid; /* Checksum of Environment valid? */
46 unsigned long cpu_clk; /* CPU clock in Hz! */
47 unsigned long bus_clk;
48 phys_size_t ram_size; /* RAM size */
49 unsigned long reset_status; /* reset status register at boot */
50 void **jt; /* jump table */
51 char env_buf[32]; /* buffer for getenv() before reloc. */
58 /* Word Offsets into Global Data - MUST match struct gd_t */
62 #define GD_HAVE_CONSOLE 3
63 #define GD_RELOC_OFF 4
65 #define GD_ENV_VALID 6
69 #define GD_RESET_STATUS 10
77 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
78 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
79 #define GD_FLG_SILENT 0x00004 /* Silent mode */
80 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
81 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
82 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
83 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
84 #define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */
85 #define GD_FLG_COLD_BOOT 0x00100 /* Cold Boot */
86 #define GD_FLG_WARM_BOOT 0x00200 /* Warm Boot */
89 #define DECLARE_GLOBAL_DATA_PTR
91 #endif /* __ASM_GBL_DATA_H */