[people/ms/u-boot.git] / arch / x86 / include / asm / global_data.h

/*
 * (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 */
Commit	Line	Data
2262cfee	1	/*
91a76751	2	* (C) Copyright 2002-2010
2262cfee WD	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	* The following data structure is placed in some memory wich is
	28	* available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
	29	* some locked parts of the data cache) to allow for a minimum set of
	30	* global variables during system initialization (until we have set
	31	* up the memory controller so that we can use RAM).
	32	*
25ddd1fb	33	* Keep it SMALL and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
2262cfee WD	34	*/
2262cfee WD	35
161b3589 GR	36	#ifndef __ASSEMBLY__
161b3589 GR	37
de47cbe6	38	typedef struct global_data {
2262cfee WD	39	bd_t *bd;
	40	unsigned long flags;
	41	unsigned long baudrate;
	42	unsigned long have_console; /* serial_init() was called */
	43	unsigned long reloc_off; /* Relocation Offset */
c868af3e	44	unsigned long load_off; /* Load Offset */
2262cfee WD	45	unsigned long env_addr; /* Address of Environment struct */
	46	unsigned long env_valid; /* Checksum of Environment valid? */
	47	unsigned long cpu_clk; /* CPU clock in Hz! */
	48	unsigned long bus_clk;
71a54049 GR	49	unsigned long relocaddr; /* Start address of U-Boot in RAM */
71a54049 GR	50	unsigned long start_addr_sp; /* start_addr_stackpointer */
b57ca3e1	51	phys_size_t ram_size; /* RAM size */
2262cfee	52	unsigned long reset_status; /* reset status register at boot */
27b207fd	53	void *jt; / jump table */
91a76751	54	char env_buf[32]; /* buffer for getenv() before reloc. */
2262cfee WD	55	} gd_t;
2262cfee WD	56
161b3589 GR	57	extern gd_t *gd;
	58
	59	#endif
	60
	61	/* Word Offsets into Global Data - MUST match struct gd_t */
c868af3e GR	62	#define GD_BD 0
	63	#define GD_FLAGS 1
	64	#define GD_BAUDRATE 2
	65	#define GD_HAVE_CONSOLE 3
	66	#define GD_RELOC_OFF 4
	67	#define GD_LOAD_OFF 5
	68	#define GD_ENV_ADDR 6
	69	#define GD_ENV_VALID 7
	70	#define GD_CPU_CLK 8
	71	#define GD_BUS_CLK 9
71a54049 GR	72	#define GD_RELOC_ADDR 10
	73	#define GD_START_ADDR_SP 11
	74	#define GD_RAM_SIZE 12
	75	#define GD_RESET_STATUS 13
	76	#define GD_JT 14
161b3589	77
71a54049	78	#define GD_SIZE 15
161b3589	79
2262cfee WD	80	/*
	81	* Global Data Flags
	82	*/
ea882baf WD	83	#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
	84	#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
	85	#define GD_FLG_SILENT 0x00004 /* Silent mode */
	86	#define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
	87	#define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
	88	#define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
91a76751	89	#define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
ea882baf	90	#define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */
c81b26be GR	91	#define GD_FLG_COLD_BOOT 0x00100 /* Cold Boot */
	92	#define GD_FLG_WARM_BOOT 0x00200 /* Warm Boot */
	93
2e2613d2	94	#if 0
3ef96ded	95	#define DECLARE_GLOBAL_DATA_PTR
2e2613d2 GR	96	#else
	97	#define XTRN_DECLARE_GLOBAL_DATA_PTR extern
	98	#define DECLARE_GLOBAL_DATA_PTR XTRN_DECLARE_GLOBAL_DATA_PTR \
	99	gd_t *gd
	100	#endif
2262cfee WD	101
2262cfee WD	102	#endif /* __ASM_GBL_DATA_H */