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 CFG_GBL_DATA_SIZE > sizeof(gd_t)
36 typedef struct global_data {
39 unsigned long baudrate;
40 unsigned long have_console; /* serial_init() was called */
41 unsigned long reloc_off; /* Relocation Offset */
42 unsigned long env_addr; /* Address of Environment struct */
43 unsigned long env_valid; /* Checksum of Environment valid? */
44 unsigned long fb_base; /* base address of frame buffer */
46 unsigned char vfd_type; /* display type */
49 unsigned long cpu_clk; /* CPU clock in Hz! */
50 unsigned long bus_clk;
51 unsigned long ram_size; /* RAM size */
52 unsigned long reset_status; /* reset status register at boot */
54 void **jt; /* jump table */
60 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
61 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
62 #define GD_FLG_SILENT 0x00004 /* Silent mode */
64 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r8")
66 #endif /* __ASM_GBL_DATA_H */