1 /* 2 * (C) Copyright 2004 Atmark Techno, Inc. 3 * 4 * Yasushi SHOJI <yashi@atmark-techno.com> 5 * 6 * See file CREDITS for list of people who contributed to this 7 * project. 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License as 11 * published by the Free Software Foundation; either version 2 of 12 * the License, or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 22 * MA 02111-1307 USA 23 */ 24 25 #ifndef __ASM_GBL_DATA_H 26 #define __ASM_GBL_DATA_H 27 /* 28 * The following data structure is placed in some memory wich is 29 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 30 * some locked parts of the data cache) to allow for a minimum set of 31 * global variables during system initialization (until we have set 32 * up the memory controller so that we can use RAM). 33 * 34 * Keep it *SMALL* and remember to set CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t) 35 */ 36 37 typedef struct global_data { 38 bd_t *bd; 39 unsigned long flags; 40 unsigned long baudrate; 41 unsigned long have_console; /* serial_init() was called */ 42 unsigned long env_addr; /* Address of Environment struct */ 43 unsigned long env_valid; /* Checksum of Environment valid? */ 44 unsigned long fb_base; /* base address of frame buffer */ 45 void **jt; /* jump table */ 46 char env_buf[32]; /* buffer for getenv() before reloc. */ 47 } gd_t; 48 49 /* 50 * Global Data Flags 51 */ 52 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 53 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 54 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 55 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 56 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 57 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 58 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 59 #define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */ 60 61 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r31") 62 63 #endif /* __ASM_GBL_DATA_H */ 64