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Diffstat (limited to 'arch/x86/include/asm/global_data.h')
| -rw-r--r-- | arch/x86/include/asm/global_data.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h new file mode 100644 index 000000000..f8a16d646 --- /dev/null +++ b/arch/x86/include/asm/global_data.h @@ -0,0 +1,102 @@ +/* + * (C) Copyright 2002-2010 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * 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 + */ + +#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 GENERATED_GBL_DATA_SIZE > sizeof(gd_t) + */ + +#ifndef __ASSEMBLY__ + +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 load_off; /* Load Offset */ + unsigned long env_addr; /* Address of Environment struct */ + unsigned long env_valid; /* Checksum of Environment valid? */ + unsigned long cpu_clk; /* CPU clock in Hz! */ + unsigned long bus_clk; + unsigned long relocaddr; /* Start address of U-Boot in RAM */ + unsigned long start_addr_sp; /* start_addr_stackpointer */ + phys_size_t ram_size; /* RAM size */ + unsigned long reset_status; /* reset status register at boot */ + void **jt; /* jump table */ + char env_buf[32]; /* buffer for getenv() before reloc. */ +} gd_t; + +extern gd_t *gd; + +#endif + +/* Word Offsets into Global Data - MUST match struct gd_t */ +#define GD_BD 0 +#define GD_FLAGS 1 +#define GD_BAUDRATE 2 +#define GD_HAVE_CONSOLE 3 +#define GD_RELOC_OFF 4 +#define GD_LOAD_OFF 5 +#define GD_ENV_ADDR 6 +#define GD_ENV_VALID 7 +#define GD_CPU_CLK 8 +#define GD_BUS_CLK 9 +#define GD_RELOC_ADDR 10 +#define GD_START_ADDR_SP 11 +#define GD_RAM_SIZE 12 +#define GD_RESET_STATUS 13 +#define GD_JT 14 + +#define GD_SIZE 15 + +/* + * 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 /* Environment imported into hash table */ +#define GD_FLG_COLD_BOOT 0x00100 /* Cold Boot */ +#define GD_FLG_WARM_BOOT 0x00200 /* Warm Boot */ + +#if 0 +#define DECLARE_GLOBAL_DATA_PTR +#else +#define XTRN_DECLARE_GLOBAL_DATA_PTR extern +#define DECLARE_GLOBAL_DATA_PTR XTRN_DECLARE_GLOBAL_DATA_PTR \ +gd_t *gd +#endif + +#endif /* __ASM_GBL_DATA_H */ |