include/asm-avr32/global_data.h

   1 /*
   2  * Copyright (C) 2004-2006 Atmel Corporation
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22 #ifndef __ASM_GLOBAL_DATA_H__
  23 #define __ASM_GLOBAL_DATA_H__
  24
  25 /*
  26  * The following data structure is placed in some memory wich is
  27  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  28  * some locked parts of the data cache) to allow for a minimum set of
  29  * global variables during system initialization (until we have set
  30  * up the memory controller so that we can use RAM).
  31  *
  32  * Keep it *SMALL* and remember to set CFG_GBL_DATA_SIZE > sizeof(gd_t)
  33  */
  34
  35 typedef struct  global_data {
  36         bd_t            *bd;
  37         unsigned long   flags;
  38         unsigned long   baudrate;
  39         unsigned long   stack_end;      /* highest stack address */
  40         unsigned long   have_console;   /* serial_init() was called */
  41         unsigned long   reloc_off;      /* Relocation Offset */
  42         unsigned long   env_addr;       /* Address of env struct */
  43         unsigned long   env_valid;      /* Checksum of env valid? */
  44         unsigned long   cpu_hz;         /* cpu core clock frequency */
  45         void            **jt;           /* jump table */
  46 } gd_t;
  47
  48 /*
  49  * Global Data Flags
  50  */
  51 #define GD_FLG_RELOC    0x00001         /* Code was relocated to RAM     */
  52 #define GD_FLG_DEVINIT  0x00002         /* Devices have been initialized */
  53 #define GD_FLG_SILENT   0x00004         /* Silent mode                   */
  54 #define GD_FLG_POSTFAIL 0x00008         /* Critical POST test failed     */
  55
  56 #define DECLARE_GLOBAL_DATA_PTR register gd_t *gd asm("r5")
  57
  58 #endif /* __ASM_GLOBAL_DATA_H__ */