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 /* Architecture-specific global data */ 29 struct arch_global_data { 30 }; 31 32 /* 33 * The following data structure is placed in some memory wich is 34 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 35 * some locked parts of the data cache) to allow for a minimum set of 36 * global variables during system initialization (until we have set 37 * up the memory controller so that we can use RAM). 38 */ 39 40 typedef struct global_data { 41 bd_t *bd; 42 unsigned long flags; 43 unsigned int baudrate; 44 unsigned long have_console; /* serial_init() was called */ 45 #ifdef CONFIG_PRE_CONSOLE_BUFFER 46 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 47 #endif 48 unsigned long env_addr; /* Address of Environment struct */ 49 const void *fdt_blob; /* Our device tree, NULL if none */ 50 unsigned long env_valid; /* Checksum of Environment valid? */ 51 unsigned long fb_base; /* base address of frame buffer */ 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 register volatile gd_t *gd asm ("r31") 60 61 #endif /* __ASM_GBL_DATA_H */ 62