1/* 2 * (C) Copyright 2002-2010 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 which 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 GENERATED_GBL_DATA_SIZE > sizeof(gd_t) 34 */ 35 36typedef struct global_data { 37 bd_t *bd; 38 unsigned long flags; 39 unsigned long baudrate; 40 unsigned long have_console; /* serial_init() was called */ 41#ifdef CONFIG_PRE_CONSOLE_BUFFER 42 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 43#endif 44 unsigned long env_addr; /* Address of Environment struct */ 45 unsigned long env_valid; /* Checksum of Environment valid? */ 46 unsigned long fb_base; /* base address of frame buffer */ 47#ifdef CONFIG_FSL_ESDHC 48 unsigned long sdhc_clk; 49#endif 50#ifdef CONFIG_AT91FAMILY 51 /* "static data" needed by at91's clock.c */ 52 unsigned long cpu_clk_rate_hz; 53 unsigned long main_clk_rate_hz; 54 unsigned long mck_rate_hz; 55 unsigned long plla_rate_hz; 56 unsigned long pllb_rate_hz; 57 unsigned long at91_pllb_usb_init; 58#endif 59#ifdef CONFIG_ARM 60 /* "static data" needed by most of timer.c on ARM platforms */ 61 unsigned long timer_rate_hz; 62 unsigned long tbl; 63 unsigned long tbu; 64 unsigned long long timer_reset_value; 65 unsigned long lastinc; 66#endif 67#ifdef CONFIG_IXP425 68 unsigned long timestamp; 69#endif 70 unsigned long relocaddr; /* Start address of U-Boot in RAM */ 71 phys_size_t ram_size; /* RAM size */ 72 unsigned long mon_len; /* monitor len */ 73 unsigned long irq_sp; /* irq stack pointer */ 74 unsigned long start_addr_sp; /* start_addr_stackpointer */ 75 unsigned long reloc_off; 76#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) 77 unsigned long tlb_addr; 78#endif 79 const void *fdt_blob; /* Our device tree, NULL if none */ 80 void **jt; /* jump table */ 81 char env_buf[32]; /* buffer for getenv() before reloc. */ 82#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) 83 unsigned long post_log_word; /* Record POST activities */ 84 unsigned long post_log_res; /* success of POST test */ 85 unsigned long post_init_f_time; /* When post_init_f started */ 86#endif 87} gd_t; 88 89/* 90 * Global Data Flags 91 */ 92#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 93#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 94#define GD_FLG_SILENT 0x00004 /* Silent mode */ 95#define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 96#define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 97#define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 98#define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 99#define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */ 100 101#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r8") 102 103#endif /* __ASM_GBL_DATA_H */ 104