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Diffstat (limited to 'arch/nds32/include/asm/global_data.h')
| -rw-r--r-- | arch/nds32/include/asm/global_data.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/arch/nds32/include/asm/global_data.h b/arch/nds32/include/asm/global_data.h new file mode 100644 index 0000000000..de20a0a573 --- /dev/null +++ b/arch/nds32/include/asm/global_data.h @@ -0,0 +1,89 @@ +/* + * (C) Copyright 2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Copyright (C) 2011 Andes Technology Corporation + * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> + * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/************************************************************** + * CAUTION: + * - do not implement for NDS32 Arch yet. + * - so far no one uses the macros defined in this head file. + **************************************************************/ + +#ifndef __ASM_GBL_DATA_H +#define __ASM_GBL_DATA_H +/* + * The following data structure is placed in some memory wich is + * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or + * some locked parts of the data cache) to allow for a minimum set of + * global variables during system initialization (until we have set + * up the memory controller so that we can use RAM). + * + * Keep it *SMALL* and remember to set CONFIG_GBL_DATA_SIZE > sizeof(gd_t) + */ + +typedef struct global_data { + bd_t *bd; + unsigned long flags; + unsigned long baudrate; + unsigned long have_console; /* serial_init() was called */ + + unsigned long reloc_off; /* Relocation Offset */ + unsigned long env_addr; /* Address of Environment struct */ + unsigned long env_valid; /* Checksum of Environment valid? */ + unsigned long fb_base; /* base address of frame buffer */ + + unsigned long relocaddr; /* Start address of U-Boot in RAM */ + phys_size_t ram_size; /* RAM size */ + unsigned long mon_len; /* monitor len */ + unsigned long irq_sp; /* irq stack pointer */ + unsigned long start_addr_sp; /* start_addr_stackpointer */ +#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) + unsigned long tlb_addr; +#endif + + void **jt; /* jump table */ + char env_buf[32]; /* buffer for getenv() before reloc. */ +} gd_t; + +/* + * Global Data Flags + */ +#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ +#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ +#define GD_FLG_SILENT 0x00004 /* Silent mode */ +#define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ +#define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ +#define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ +#define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ +#define GD_FLG_ENV_READY 0x00080 /* Envs imported into hash table */ + +#ifdef CONFIG_GLOBAL_DATA_NOT_REG10 +extern volatile gd_t g_gd; +#define DECLARE_GLOBAL_DATA_PTR static volatile gd_t *gd = &g_gd +#else +#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("$r10") +#endif + +#endif /* __ASM_GBL_DATA_H */ |