| wdenk | 2262cfe | 2002-11-18 00:14:45 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2002 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #ifndef __ASM_GBL_DATA_H |
| 25 | #define __ASM_GBL_DATA_H |
| 26 | /* |
| 27 | * The following data structure is placed in some memory wich is |
| 28 | * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or |
| 29 | * some locked parts of the data cache) to allow for a minimum set of |
| 30 | * global variables during system initialization (until we have set |
| 31 | * up the memory controller so that we can use RAM). |
| 32 | * |
| 33 | * Keep it *SMALL* and remember to set CFG_GBL_DATA_SIZE > sizeof(gd_t) |
| 34 | */ |
| 35 | |
| 36 | typedef struct { |
| 37 | bd_t *bd; |
| 38 | unsigned long flags; |
| 39 | unsigned long baudrate; |
| 40 | unsigned long have_console; /* serial_init() was called */ |
| 41 | unsigned long reloc_off; /* Relocation Offset */ |
| 42 | unsigned long env_addr; /* Address of Environment struct */ |
| 43 | unsigned long env_valid; /* Checksum of Environment valid? */ |
| 44 | unsigned long cpu_clk; /* CPU clock in Hz! */ |
| 45 | unsigned long bus_clk; |
| 46 | unsigned long ram_size; /* RAM size */ |
| 47 | unsigned long reset_status; /* reset status register at boot */ |
| 48 | } gd_t; |
| 49 | |
| 50 | /* |
| 51 | * Global Data Flags |
| 52 | */ |
| 53 | #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ |
| 54 | #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ |
| 55 | |
| 56 | extern gd_t *global_data; |
| 57 | |
| 58 | #define DECLARE_GLOBAL_DATA_PTR gd_t *gd = global_data |
| 59 | |
| 60 | #endif /* __ASM_GBL_DATA_H */ |