1/* 2 * (C) Copyright 2002-2010 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * (C) Copyright 2007 6 * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com. 7 * 8 * See file CREDITS for list of people who contributed to this 9 * project. 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation; either version 2 of 14 * the License, or (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 24 * MA 02111-1307 USA 25 */ 26 27#ifndef __ASM_GBL_DATA_H 28#define __ASM_GBL_DATA_H 29 30#include "asm/types.h" 31 32/* 33 * The following data structure is placed in some memory wich is 34 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 35 * some locked parts of the data cache) to allow for a minimum set of 36 * global variables during system initialization (until we have set 37 * up the memory controller so that we can use RAM). 38 * 39 * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t) 40 */ 41 42typedef struct global_data { 43 bd_t *bd; 44 unsigned long flags; 45 unsigned long baudrate; 46 unsigned long cpu_clk; /* CPU clock in Hz! */ 47 unsigned long bus_clk; 48 49 phys_size_t ram_size; /* RAM size */ 50 unsigned long reloc_off; /* Relocation Offset */ 51 unsigned long reset_status; /* reset status register at boot */ 52 unsigned long env_addr; /* Address of Environment struct */ 53 unsigned long env_valid; /* Checksum of Environment valid? */ 54 unsigned long have_console; /* serial_init() was called */ 55 56#ifdef CONFIG_PRE_CONSOLE_BUFFER 57 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 58#endif 59#if defined(CONFIG_LCD) || defined(CONFIG_VIDEO) 60 unsigned long fb_base; /* Base address of framebuffer memory */ 61#endif 62#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) 63 unsigned long post_log_word; /* Record POST activities */ 64 unsigned long post_log_res; /* success of POST test */ 65 unsigned long post_init_f_time; /* When post_init_f started */ 66#endif 67#ifdef CONFIG_BOARD_TYPES 68 unsigned long board_type; 69#endif 70#ifdef CONFIG_MODEM_SUPPORT 71 unsigned long do_mdm_init; 72 unsigned long be_quiet; 73#endif 74#ifdef CONFIG_LWMON 75 unsigned long kbd_status; 76#endif 77 void **jt; /* jump table */ 78 char env_buf[32]; /* buffer for getenv() before reloc. */ 79} gd_t; 80 81/* 82 * Global Data Flags 83 */ 84#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 85#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 86#define GD_FLG_SILENT 0x00004 /* Silent mode */ 87#define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 88#define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 89#define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 90#define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 91#define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */ 92 93#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("%g7") 94 95#endif /* __ASM_GBL_DATA_H */ 96