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 36 typedef struct global_data { 37 bd_t *bd; 38 unsigned long flags; 39 unsigned int baudrate; 40 unsigned long have_console; /* serial_init() was called */ 41 unsigned long env_addr; /* Address of Environment struct */ 42 unsigned long env_valid; /* Checksum of Environment valid? */ 43 unsigned long fb_base; /* base address of frame buffer */ 44 u8 *ram_buf; /* emulated RAM buffer */ 45 phys_size_t ram_size; /* RAM size */ 46 const void *fdt_blob; /* Our device tree, NULL if none */ 47 void **jt; /* jump table */ 48 char env_buf[32]; /* buffer for getenv() before reloc. */ 49 } gd_t; 50 51 #include <asm-generic/global_data_flags.h> 52 53 #define DECLARE_GLOBAL_DATA_PTR extern gd_t *gd 54 55 #endif /* __ASM_GBL_DATA_H */ 56