2 * Copyright (c) 2011 The Chromium OS Authors.
4 * (C) Copyright 2002-2010
5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * See file CREDITS for list of people who contributed to this
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.
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.
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,
26 #ifndef __ASM_GBL_DATA_H
27 #define __ASM_GBL_DATA_H
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).
36 typedef struct global_data {
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. */
51 #include <asm-generic/global_data_flags.h>
53 #define DECLARE_GLOBAL_DATA_PTR extern gd_t *gd
55 #endif /* __ASM_GBL_DATA_H */