1 /* 2 * (C) Copyright 2002 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 CONFIG_SYS_GBL_DATA_SIZE > sizeof(gd_t) 40 */ 41 42 typedef 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 #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO) 57 unsigned long fb_base; /* Base address of framebuffer memory */ 58 #endif 59 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) 60 unsigned long post_log_word; /* Record POST activities */ 61 unsigned long post_init_f_time; /* When post_init_f started */ 62 #endif 63 #ifdef CONFIG_BOARD_TYPES 64 unsigned long board_type; 65 #endif 66 #ifdef CONFIG_MODEM_SUPPORT 67 unsigned long do_mdm_init; 68 unsigned long be_quiet; 69 #endif 70 #ifdef CONFIG_LWMON 71 unsigned long kbd_status; 72 #endif 73 void **jt; /* jump table */ 74 } gd_t; 75 76 /* 77 * Global Data Flags 78 */ 79 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 80 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 81 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 82 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 83 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 84 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 85 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 86 87 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("%g7") 88 89 #endif /* __ASM_GBL_DATA_H */ 90