1 /* 2 * (C) Copyright 2002 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * Copyright (C) 2011 Andes Technology Corporation 6 * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> 7 * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> 8 * 9 * See file CREDITS for list of people who contributed to this 10 * project. 11 * 12 * This program is free software; you can redistribute it and/or 13 * modify it under the terms of the GNU General Public License as 14 * published by the Free Software Foundation; either version 2 of 15 * the License, or (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 25 * MA 02111-1307 USA 26 */ 27 28 /************************************************************** 29 * CAUTION: 30 * - do not implement for NDS32 Arch yet. 31 * - so far no one uses the macros defined in this head file. 32 **************************************************************/ 33 34 #ifndef __ASM_GBL_DATA_H 35 #define __ASM_GBL_DATA_H 36 37 /* Architecture-specific global data */ 38 struct arch_global_data { 39 }; 40 41 /* 42 * The following data structure is placed in some memory wich is 43 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 44 * some locked parts of the data cache) to allow for a minimum set of 45 * global variables during system initialization (until we have set 46 * up the memory controller so that we can use RAM). 47 */ 48 49 typedef struct global_data { 50 bd_t *bd; 51 unsigned long flags; 52 unsigned int baudrate; 53 unsigned long have_console; /* serial_init() was called */ 54 55 unsigned long reloc_off; /* Relocation Offset */ 56 unsigned long env_addr; /* Address of Environment struct */ 57 unsigned long env_valid; /* Checksum of Environment valid? */ 58 unsigned long fb_base; /* base address of frame buffer */ 59 60 unsigned long relocaddr; /* Start address of U-Boot in RAM */ 61 phys_size_t ram_size; /* RAM size */ 62 unsigned long mon_len; /* monitor len */ 63 unsigned long irq_sp; /* irq stack pointer */ 64 unsigned long start_addr_sp; /* start_addr_stackpointer */ 65 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) 66 unsigned long tlb_addr; 67 #endif 68 69 void **jt; /* jump table */ 70 char env_buf[32]; /* buffer for getenv() before reloc. */ 71 struct arch_global_data arch; /* architecture-specific data */ 72 } gd_t; 73 74 #include <asm-generic/global_data_flags.h> 75 76 #ifdef CONFIG_GLOBAL_DATA_NOT_REG10 77 extern volatile gd_t g_gd; 78 #define DECLARE_GLOBAL_DATA_PTR static volatile gd_t *gd = &g_gd 79 #else 80 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("$r10") 81 #endif 82 83 #endif /* __ASM_GBL_DATA_H */ 84