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  • /*
     * (C) Copyright 2002-2003
     * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
     *
     * See file CREDITS for list of people who contributed to this
     * project.
     *
     * This program is free software; you can redistribute it and/or
     * modify it under the terms of the GNU General Public License as
     * published by the Free Software Foundation; either version 2 of
     * the License, or (at your option) any later version.
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
     * MA 02111-1307 USA
     */
    
    #ifndef	__ASM_GBL_DATA_H
    #define __ASM_GBL_DATA_H
    
    #include <asm/regdef.h>
    
    /*
     * The following data structure is placed in some memory wich is
     * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
     * some locked parts of the data cache) to allow for a minimum set of
     * global variables during system initialization (until we have set
     * up the memory controller so that we can use RAM).
     *
    
     * Keep it *SMALL* and remember to set CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t)
    
     */
    
    typedef	struct	global_data {
    	bd_t		*bd;
    	unsigned long	flags;
    	unsigned long	baudrate;
    	unsigned long	have_console;	/* serial_init() was called */
    
    	phys_size_t	ram_size;	/* RAM size */
    
    	unsigned long	reloc_off;	/* Relocation Offset */
    	unsigned long	env_addr;	/* Address  of Environment struct */
    	unsigned long	env_valid;	/* Checksum of Environment valid? */
    
    } gd_t;
    
    /*
     * Global Data Flags
     */
    #define	GD_FLG_RELOC	0x00001		/* Code was relocated to RAM     */
    #define	GD_FLG_DEVINIT	0x00002		/* Devices have been initialized */
    
    #define	GD_FLG_SILENT	0x00004		/* Silent mode			 */
    
    #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed	 */
    
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    #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted	 */
    
    #define	GD_FLG_LOGINIT	0x00020		/* Log Buf has been initialized	 */
    
    #define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
    
    #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("k0")
    
    
    #endif /* __ASM_GBL_DATA_H */