arch/blackfin/include/asm/global_data.h

   1 /*
   2  * U-boot - global_data.h Declarations for global data of u-boot
   3  *
   4  * Copyright (c) 2005-2007 Analog Devices Inc.
   5  *
   6  * (C) Copyright 2000-2010
   7  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  25  * MA 02110-1301 USA
  26  */
  27
  28 #ifndef __ASM_GBL_DATA_H
  29 #define __ASM_GBL_DATA_H
  30
  31 #include <asm/u-boot.h>
  32
  33 /*
  34  * The following data structure is placed in some memory wich is
  35  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  36  * some locked parts of the data cache) to allow for a minimum set of
  37  * global variables during system initialization (until we have set
  38  * up the memory controller so that we can use RAM).
  39  *
  40  * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
  41  */
  42 typedef struct global_data {
  43         bd_t *bd;
  44         unsigned long flags;
  45         unsigned long board_type;
  46         unsigned long baudrate;
  47         unsigned long have_console;     /* serial_init() was called */
  48 #ifdef CONFIG_PRE_CONSOLE_BUFFER
  49         unsigned long   precon_buf_idx; /* Pre-Console buffer index */
  50 #endif
  51         phys_size_t ram_size;           /* RAM size */
  52         unsigned long env_addr; /* Address  of Environment struct */
  53         unsigned long env_valid;        /* Checksum of Environment valid? */
  54 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
  55         unsigned long post_log_word;    /* Record POST activities */
  56         unsigned long post_init_f_time; /* When post_init_f started */
  57 #endif
  58
  59         void    **jt;                   /* jump table */
  60         char    env_buf[32];            /* buffer for getenv() before reloc. */
  61 } gd_t;
  62
  63 /*
  64  * Global Data Flags
  65  */
  66 #define GD_FLG_RELOC            0x00001 /* Code was relocated to RAM            */
  67 #define GD_FLG_DEVINIT          0x00002 /* Devices have been initialized        */
  68 #define GD_FLG_SILENT           0x00004 /* Silent mode                          */
  69 #define GD_FLG_POSTFAIL         0x00008 /* Critical POST test failed            */
  70 #define GD_FLG_POSTSTOP         0x00010 /* POST seqeunce aborted                */
  71 #define GD_FLG_LOGINIT          0x00020 /* Log Buffer has been initialized      */
  72 #define GD_FLG_DISABLE_CONSOLE  0x00040 /* Disable console (in & out)           */
  73 #define GD_FLG_ENV_READY        0x00080 /* Environment imported into hash table */
  74
  75 #define DECLARE_GLOBAL_DATA_PTR     register gd_t * volatile gd asm ("P3")
  76
  77 #endif