uboot/arch/avr32/include/asm/global_data.h
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   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
  35typedef 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__ */
  70