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 #ifndef __ASSEMBLY__ 28 29 /* Architecture-specific global data */ 30 struct arch_global_data { 31 }; 32 33 /* 34 * The following data structure is placed in some memory wich is 35 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 36 * some locked parts of the data cache) to allow for a minimum set of 37 * global variables during system initialization (until we have set 38 * up the memory controller so that we can use RAM). 39 */ 40 41 #include <asm/u-boot.h> 42 43 typedef struct global_data gd_t; 44 45 struct global_data { 46 struct arch_global_data arch; /* architecture-specific data */ 47 /* NOTE: gd_addr MUST be first member of struct global_data! */ 48 gd_t *gd_addr; /* Location of Global Data */ 49 bd_t *bd; 50 unsigned long flags; 51 unsigned int baudrate; 52 unsigned long have_console; /* serial_init() was called */ 53 #ifdef CONFIG_PRE_CONSOLE_BUFFER 54 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 55 #endif 56 unsigned long reloc_off; /* Relocation Offset */ 57 unsigned long load_off; /* Load Offset */ 58 unsigned long env_addr; /* Address of Environment struct */ 59 unsigned long env_valid; /* Checksum of Environment valid? */ 60 unsigned long cpu_clk; /* CPU clock in Hz! */ 61 unsigned long bus_clk; 62 unsigned long relocaddr; /* Start address of U-Boot in RAM */ 63 unsigned long start_addr_sp; /* start_addr_stackpointer */ 64 phys_size_t ram_size; /* RAM size */ 65 unsigned long reset_status; /* reset status register at boot */ 66 const void *fdt_blob; /* Our device tree, NULL if none */ 67 void **jt; /* jump table */ 68 char env_buf[32]; /* buffer for getenv() before reloc. */ 69 }; 70 71 static inline gd_t *get_fs_gd_ptr(void) 72 { 73 gd_t *gd_ptr; 74 75 asm volatile("fs movl 0, %0\n" : "=r" (gd_ptr)); 76 77 return gd_ptr; 78 } 79 80 #define gd get_fs_gd_ptr() 81 82 #endif 83 84 #include <asm-generic/global_data_flags.h> 85 86 /* 87 * Our private Global Data Flags 88 */ 89 #define GD_FLG_COLD_BOOT 0x00100 /* Cold Boot */ 90 #define GD_FLG_WARM_BOOT 0x00200 /* Warm Boot */ 91 92 #define DECLARE_GLOBAL_DATA_PTR 93 94 #endif /* __ASM_GBL_DATA_H */ 95