1 /* 2 * Copyright (c) 2011 The Chromium OS Authors. 3 * 4 * (C) Copyright 2002-2010 5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 6 * 7 * See file CREDITS for list of people who contributed to this 8 * project. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License as 12 * published by the Free Software Foundation; either version 2 of 13 * the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 23 * MA 02111-1307 USA 24 */ 25 26 #ifndef __ASM_GBL_DATA_H 27 #define __ASM_GBL_DATA_H 28 /* 29 * The following data structure is placed in some memory wich is 30 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 31 * some locked parts of the data cache) to allow for a minimum set of 32 * global variables during system initialization (until we have set 33 * up the memory controller so that we can use RAM). 34 * 35 * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t) 36 */ 37 38 typedef struct global_data { 39 bd_t *bd; 40 unsigned long flags; 41 unsigned long baudrate; 42 unsigned long have_console; /* serial_init() was called */ 43 unsigned long env_addr; /* Address of Environment struct */ 44 unsigned long env_valid; /* Checksum of Environment valid? */ 45 unsigned long fb_base; /* base address of frame buffer */ 46 u8 *ram_buf; /* emulated RAM buffer */ 47 phys_size_t ram_size; /* RAM size */ 48 const void *fdt_blob; /* Our device tree, NULL if none */ 49 void **jt; /* jump table */ 50 char env_buf[32]; /* buffer for getenv() before reloc. */ 51 } gd_t; 52 53 /* 54 * Global Data Flags 55 */ 56 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 57 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 58 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 59 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 60 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 61 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 62 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 63 #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */ 64 65 #define DECLARE_GLOBAL_DATA_PTR extern gd_t *gd 66 67 #endif /* __ASM_GBL_DATA_H */ 68