1 /* 2 * (C) Copyright 2004 Atmark Techno, Inc. 3 * 4 * Yasushi SHOJI <yashi@atmark-techno.com> 5 * 6 * See file CREDITS for list of people who contributed to this 7 * project. 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License as 11 * published by the Free Software Foundation; either version 2 of 12 * the License, or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 22 * MA 02111-1307 USA 23 */ 24 25 #ifndef __ASM_GBL_DATA_H 26 #define __ASM_GBL_DATA_H 27 /* 28 * The following data structure is placed in some memory wich is 29 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 30 * some locked parts of the data cache) to allow for a minimum set of 31 * global variables during system initialization (until we have set 32 * up the memory controller so that we can use RAM). 33 */ 34 35 typedef struct global_data { 36 bd_t *bd; 37 unsigned long flags; 38 unsigned long baudrate; 39 unsigned long have_console; /* serial_init() was called */ 40 #ifdef CONFIG_PRE_CONSOLE_BUFFER 41 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 42 #endif 43 unsigned long env_addr; /* Address of Environment struct */ 44 const void *fdt_blob; /* Our device tree, NULL if none */ 45 unsigned long env_valid; /* Checksum of Environment valid? */ 46 unsigned long fb_base; /* base address of frame buffer */ 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 register volatile gd_t *gd asm ("r31") 54 55 #endif /* __ASM_GBL_DATA_H */ 56