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 34 typedef struct global_data { 35 bd_t *bd; 36 unsigned long flags; 37 unsigned int baudrate; 38 unsigned long have_console; /* serial_init() was called */ 39 #ifdef CONFIG_PRE_CONSOLE_BUFFER 40 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 41 #endif 42 unsigned long env_addr; /* Address of Environment struct */ 43 unsigned long env_valid; /* Checksum of Environment valid? */ 44 unsigned long fb_base; /* base address of frame buffer */ 45 #ifdef CONFIG_FSL_ESDHC 46 unsigned long sdhc_clk; 47 #endif 48 #ifdef CONFIG_AT91FAMILY 49 /* "static data" needed by at91's clock.c */ 50 unsigned long cpu_clk_rate_hz; 51 unsigned long main_clk_rate_hz; 52 unsigned long mck_rate_hz; 53 unsigned long plla_rate_hz; 54 unsigned long pllb_rate_hz; 55 unsigned long at91_pllb_usb_init; 56 #endif 57 #ifdef CONFIG_ARM 58 /* "static data" needed by most of timer.c on ARM platforms */ 59 unsigned long timer_rate_hz; 60 unsigned long tbl; 61 unsigned long tbu; 62 unsigned long long timer_reset_value; 63 unsigned long lastinc; 64 #endif 65 #ifdef CONFIG_IXP425 66 unsigned long timestamp; 67 #endif 68 unsigned long relocaddr; /* Start address of U-Boot in RAM */ 69 phys_size_t ram_size; /* RAM size */ 70 unsigned long mon_len; /* monitor len */ 71 unsigned long irq_sp; /* irq stack pointer */ 72 unsigned long start_addr_sp; /* start_addr_stackpointer */ 73 unsigned long reloc_off; 74 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) 75 unsigned long tlb_addr; 76 unsigned long tlb_size; 77 #endif 78 const void *fdt_blob; /* Our device tree, NULL if none */ 79 void **jt; /* jump table */ 80 char env_buf[32]; /* buffer for getenv() before reloc. */ 81 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) 82 unsigned long post_log_word; /* Record POST activities */ 83 unsigned long post_log_res; /* success of POST test */ 84 unsigned long post_init_f_time; /* When post_init_f started */ 85 #endif 86 } gd_t; 87 88 #include <asm-generic/global_data_flags.h> 89 90 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r8") 91 92 #endif /* __ASM_GBL_DATA_H */ 93