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