| Simon Glass | b4a905e | 2011-10-10 08:22:14 +0000 | [diff] [blame] | 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 | * 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). |
| 34 | * |
| 35 | * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t) |
| 36 | */ |
| 37 | |
| 38 | typedef struct global_data { |
| 39 | bd_t *bd; |
| 40 | unsigned long flags; |
| 41 | unsigned long baudrate; |
| 42 | unsigned long have_console; /* serial_init() was called */ |
| 43 | unsigned long env_addr; /* Address of Environment struct */ |
| 44 | unsigned long env_valid; /* Checksum of Environment valid? */ |
| 45 | unsigned long fb_base; /* base address of frame buffer */ |
| 46 | u8 *ram_buf; /* emulated RAM buffer */ |
| 47 | phys_size_t ram_size; /* RAM size */ |
| 48 | void **jt; /* jump table */ |
| 49 | char env_buf[32]; /* buffer for getenv() before reloc. */ |
| 50 | } gd_t; |
| 51 | |
| 52 | /* |
| 53 | * Global Data Flags |
| 54 | */ |
| 55 | #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ |
| 56 | #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ |
| 57 | #define GD_FLG_SILENT 0x00004 /* Silent mode */ |
| 58 | #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ |
| 59 | #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ |
| 60 | #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ |
| 61 | #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ |
| 62 | #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */ |
| 63 | |
| 64 | #define DECLARE_GLOBAL_DATA_PTR extern gd_t *gd |
| 65 | |
| 66 | #endif /* __ASM_GBL_DATA_H */ |