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 * The following data structure is placed in some memory wich is 38 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 39 * some locked parts of the data cache) to allow for a minimum set of 40 * global variables during system initialization (until we have set 41 * up the memory controller so that we can use RAM). 42 * 43 * Keep it *SMALL* and remember to set CONFIG_GBL_DATA_SIZE > sizeof(gd_t) 44 */ 45 46 typedef struct global_data { 47 bd_t *bd; 48 unsigned long flags; 49 unsigned long baudrate; 50 unsigned long have_console; /* serial_init() was called */ 51 52 unsigned long reloc_off; /* Relocation Offset */ 53 unsigned long env_addr; /* Address of Environment struct */ 54 unsigned long env_valid; /* Checksum of Environment valid? */ 55 unsigned long fb_base; /* base address of frame buffer */ 56 57 unsigned long relocaddr; /* Start address of U-Boot in RAM */ 58 phys_size_t ram_size; /* RAM size */ 59 unsigned long mon_len; /* monitor len */ 60 unsigned long irq_sp; /* irq stack pointer */ 61 unsigned long start_addr_sp; /* start_addr_stackpointer */ 62 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) 63 unsigned long tlb_addr; 64 #endif 65 66 void **jt; /* jump table */ 67 char env_buf[32]; /* buffer for getenv() before reloc. */ 68 } gd_t; 69 70 /* 71 * Global Data Flags 72 */ 73 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 74 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 75 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 76 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 77 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 78 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 79 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 80 #define GD_FLG_ENV_READY 0x00080 /* Envs imported into hash table */ 81 82 #ifdef CONFIG_GLOBAL_DATA_NOT_REG10 83 extern volatile gd_t g_gd; 84 #define DECLARE_GLOBAL_DATA_PTR static volatile gd_t *gd = &g_gd 85 #else 86 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("$r10") 87 #endif 88 89 #endif /* __ASM_GBL_DATA_H */ 90