arch/avr32/include/asm/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 GENERATED_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 #ifdef CONFIG_PRE_CONSOLE_BUFFER
  42         unsigned long   precon_buf_idx; /* Pre-Console buffer index */
  43 #endif
  44         unsigned long   reloc_off;      /* Relocation Offset */
  45         unsigned long   env_addr;       /* Address of env struct */
  46         unsigned long   env_valid;      /* Checksum of env valid? */
  47         unsigned long   cpu_hz;         /* cpu core clock frequency */
  48 #if defined(CONFIG_LCD)
  49         void            *fb_base;       /* framebuffer address */
  50 #endif
  51         void            **jt;           /* jump table */
  52         char            env_buf[32];    /* buffer for getenv() before reloc. */
  53 } gd_t;
  54
  55 /*
  56  * Global Data Flags
  57  */
  58 #define GD_FLG_RELOC            0x00001 /* Code was relocated to RAM            */
  59 #define GD_FLG_DEVINIT          0x00002 /* Devices have been initialized        */
  60 #define GD_FLG_SILENT           0x00004 /* Silent mode                          */
  61 #define GD_FLG_POSTFAIL         0x00008 /* Critical POST test failed            */
  62 #define GD_FLG_POSTSTOP         0x00010 /* POST seqeunce aborted                */
  63 #define GD_FLG_LOGINIT          0x00020 /* Log Buffer has been initialized      */
  64 #define GD_FLG_DISABLE_CONSOLE  0x00040 /* Disable console (in & out)           */
  65 #define GD_FLG_ENV_READY        0x00080 /* Environment imported into hash table */
  66
  67 #define DECLARE_GLOBAL_DATA_PTR register gd_t *gd asm("r5")
  68
  69 #endif /* __ASM_GLOBAL_DATA_H__ */