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 /* Architecture-specific global data */
28 struct arch_global_data {
29 #ifdef CONFIG_AT91FAMILY
30 	/* "static data" needed by at91's clock.c */
31 	unsigned long	cpu_clk_rate_hz;
32 	unsigned long	main_clk_rate_hz;
33 	unsigned long	mck_rate_hz;
34 	unsigned long	plla_rate_hz;
35 	unsigned long	pllb_rate_hz;
36 	unsigned long	at91_pllb_usb_init;
37 #endif
38 	/* "static data" needed by most of timer.c on ARM platforms */
39 	unsigned long timer_rate_hz;
40 	unsigned long tbu;
41 	unsigned long tbl;
42 	unsigned long lastinc;
43 	unsigned long long timer_reset_value;
44 #ifdef CONFIG_IXP425
45 	unsigned long timestamp;
46 #endif
47 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
48 	unsigned long tlb_addr;
49 	unsigned long tlb_size;
50 #endif
51 };
52 
53 /*
54  * The following data structure is placed in some memory which is
55  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
56  * some locked parts of the data cache) to allow for a minimum set of
57  * global variables during system initialization (until we have set
58  * up the memory controller so that we can use RAM).
59  */
60 
61 typedef	struct	global_data {
62 	bd_t		*bd;
63 	unsigned long	flags;
64 	unsigned int	baudrate;
65 	unsigned long	have_console;	/* serial_init() was called */
66 #ifdef CONFIG_PRE_CONSOLE_BUFFER
67 	unsigned long	precon_buf_idx;	/* Pre-Console buffer index */
68 #endif
69 	unsigned long	env_addr;	/* Address  of Environment struct */
70 	unsigned long	env_valid;	/* Checksum of Environment valid? */
71 	unsigned long	fb_base;	/* base address of frame buffer */
72 #ifdef CONFIG_FSL_ESDHC
73 	unsigned long	sdhc_clk;
74 #endif
75 	unsigned long	relocaddr;	/* Start address of U-Boot in RAM */
76 	phys_size_t	ram_size;	/* RAM size */
77 	unsigned long	mon_len;	/* monitor len */
78 	unsigned long	irq_sp;		/* irq stack pointer */
79 	unsigned long	start_addr_sp;	/* start_addr_stackpointer */
80 	unsigned long	reloc_off;
81 	const void	*fdt_blob;	/* Our device tree, NULL if none */
82 	void		**jt;		/* jump table */
83 	char		env_buf[32];	/* buffer for getenv() before reloc. */
84 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
85 	unsigned long	post_log_word; /* Record POST activities */
86 	unsigned long	post_log_res; /* success of POST test */
87 	unsigned long	post_init_f_time; /* When post_init_f started */
88 #endif
89 	struct arch_global_data arch;	/* architecture-specific data */
90 } gd_t;
91 
92 #include <asm-generic/global_data_flags.h>
93 
94 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("r8")
95 
96 #endif /* __ASM_GBL_DATA_H */
97