1 /* 2 * (C) Copyright 2002-2010 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #ifndef __ASM_GBL_DATA_H 25 #define __ASM_GBL_DATA_H 26 27 #include <asm/regdef.h> 28 29 /* 30 * The following data structure is placed in some memory wich is 31 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 32 * some locked parts of the data cache) to allow for a minimum set of 33 * global variables during system initialization (until we have set 34 * up the memory controller so that we can use RAM). 35 * 36 * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t) 37 */ 38 39 typedef struct global_data { 40 bd_t *bd; 41 unsigned long flags; 42 unsigned long baudrate; 43 unsigned long have_console; /* serial_init() was called */ 44 phys_size_t ram_size; /* RAM size */ 45 unsigned long reloc_off; /* Relocation Offset */ 46 unsigned long env_addr; /* Address of Environment struct */ 47 unsigned long env_valid; /* Checksum of Environment valid? */ 48 void **jt; /* jump table */ 49 char env_buf[32]; /* buffer for getenv() before reloc. */ 50 } gd_t; 51 52 /* 53 * Global Data Flags 54 */ 55 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 56 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 57 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 58 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 59 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 60 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 61 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 62 #define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */ 63 64 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("k0") 65 66 #endif /* __ASM_GBL_DATA_H */ 67