1 /*
2  * (C) Copyright 2002-2010
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 which 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  *
33  * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
34  */
35 
36 typedef	struct	global_data {
37 	bd_t		*bd;
38 	unsigned long	flags;
39 	unsigned long	baudrate;
40 	unsigned long	have_console;	/* serial_init() was called */
41 #ifdef CONFIG_PRE_CONSOLE_BUFFER
42 	unsigned long	precon_buf_idx;	/* Pre-Console buffer index */
43 #endif
44 	unsigned long	env_addr;	/* Address  of Environment struct */
45 	unsigned long	env_valid;	/* Checksum of Environment valid? */
46 	unsigned long	fb_base;	/* base address of frame buffer */
47 #ifdef CONFIG_FSL_ESDHC
48 	unsigned long	sdhc_clk;
49 #endif
50 #ifdef CONFIG_AT91FAMILY
51 	/* "static data" needed by at91's clock.c */
52 	unsigned long	cpu_clk_rate_hz;
53 	unsigned long	main_clk_rate_hz;
54 	unsigned long	mck_rate_hz;
55 	unsigned long	plla_rate_hz;
56 	unsigned long	pllb_rate_hz;
57 	unsigned long	at91_pllb_usb_init;
58 #endif
59 #ifdef CONFIG_ARM
60 	/* "static data" needed by most of timer.c on ARM platforms */
61 	unsigned long	timer_rate_hz;
62 	unsigned long	tbl;
63 	unsigned long	tbu;
64 	unsigned long long	timer_reset_value;
65 	unsigned long	lastinc;
66 #endif
67 #ifdef CONFIG_IXP425
68 	unsigned long	timestamp;
69 #endif
70 	unsigned long	relocaddr;	/* Start address of U-Boot in RAM */
71 	phys_size_t	ram_size;	/* RAM size */
72 	unsigned long	mon_len;	/* monitor len */
73 	unsigned long	irq_sp;		/* irq stack pointer */
74 	unsigned long	start_addr_sp;	/* start_addr_stackpointer */
75 	unsigned long	reloc_off;
76 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
77 	unsigned long	tlb_addr;
78 #endif
79 	const void	*fdt_blob;	/* Our device tree, NULL if none */
80 	void		**jt;		/* jump table */
81 	char		env_buf[32];	/* buffer for getenv() before reloc. */
82 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
83 	unsigned long	post_log_word; /* Record POST activities */
84 	unsigned long	post_log_res; /* success of POST test */
85 	unsigned long	post_init_f_time; /* When post_init_f started */
86 #endif
87 } gd_t;
88 
89 /*
90  * Global Data Flags
91  */
92 #define	GD_FLG_RELOC		0x00001	/* Code was relocated to RAM		*/
93 #define	GD_FLG_DEVINIT		0x00002	/* Devices have been initialized	*/
94 #define	GD_FLG_SILENT		0x00004	/* Silent mode				*/
95 #define	GD_FLG_POSTFAIL		0x00008	/* Critical POST test failed		*/
96 #define	GD_FLG_POSTSTOP		0x00010	/* POST seqeunce aborted		*/
97 #define	GD_FLG_LOGINIT		0x00020	/* Log Buffer has been initialized	*/
98 #define GD_FLG_DISABLE_CONSOLE	0x00040	/* Disable console (in & out)		*/
99 #define GD_FLG_ENV_READY	0x00080	/* Environment imported into hash table	*/
100 
101 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("r8")
102 
103 #endif /* __ASM_GBL_DATA_H */
104