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 /* Architecture-specific global data */ 30 struct arch_global_data { 31 }; 32 33 /* 34 * The following data structure is placed in some memory wich is 35 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 36 * some locked parts of the data cache) to allow for a minimum set of 37 * global variables during system initialization (until we have set 38 * up the memory controller so that we can use RAM). 39 */ 40 41 typedef struct global_data { 42 bd_t *bd; 43 unsigned long flags; 44 unsigned int baudrate; 45 unsigned long have_console; /* serial_init() was called */ 46 unsigned long env_addr; /* Address of Environment struct */ 47 unsigned long env_valid; /* Checksum of Environment valid? */ 48 unsigned long fb_base; /* base address of frame buffer */ 49 u8 *ram_buf; /* emulated RAM buffer */ 50 phys_size_t ram_size; /* RAM size */ 51 const void *fdt_blob; /* Our device tree, NULL if none */ 52 void **jt; /* jump table */ 53 char env_buf[32]; /* buffer for getenv() before reloc. */ 54 struct arch_global_data arch; /* architecture-specific data */ 55 } gd_t; 56 57 #include <asm-generic/global_data_flags.h> 58 59 #define DECLARE_GLOBAL_DATA_PTR extern gd_t *gd 60 61 #endif /* __ASM_GBL_DATA_H */ 62