67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/*
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* (C) Copyright 2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef __ASM_GBL_DATA_H
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#define __ASM_GBL_DATA_H
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/*
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* The following data structure is placed in some memory wich is
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* available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
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* some locked parts of the data cache) to allow for a minimum set of
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* global variables during system initialization (until we have set
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* up the memory controller so that we can use RAM).
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*
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* Keep it *SMALL* and remember to set CFG_GBL_DATA_SIZE > sizeof(gd_t)
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*/
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typedef struct global_data {
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bd_t *bd;
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unsigned long flags;
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unsigned long baudrate;
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unsigned long have_console; /* serial_init() was called */
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unsigned long reloc_off; /* Relocation Offset */
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unsigned long env_addr; /* Address of Environment struct */
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unsigned long env_valid; /* Checksum of Environment valid? */
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unsigned long fb_base; /* base address of frame buffer */
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#ifdef CONFIG_VFD
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unsigned char vfd_type; /* display type */
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#endif
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#if 0
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unsigned long cpu_clk; /* CPU clock in Hz! */
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unsigned long bus_clk;
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unsigned long ram_size; /* RAM size */
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unsigned long reset_status; /* reset status register at boot */
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#endif
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void **jt; /* jump table */
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} gd_t;
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/*
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* Global Data Flags
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*/
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#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
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#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
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#define GD_FLG_SILENT 0x00004 /* Silent mode */
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#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r8")
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#endif /* __ASM_GBL_DATA_H */
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