1 /*
2  * (C) Copyright 2002
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * Copyright (C) 2011 Andes Technology Corporation
6  * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
7  * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
8  *
9  * See file CREDITS for list of people who contributed to this
10  * project.
11  *
12  * This program is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU General Public License as
14  * published by the Free Software Foundation; either version 2 of
15  * the License, or (at your option) any later version.
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with this program; if not, write to the Free Software
24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25  * MA 02111-1307 USA
26  */
27 
28 /**************************************************************
29  * CAUTION:
30  *   - do not implement for NDS32 Arch yet.
31  *   - so far no one uses the macros defined in this head file.
32  **************************************************************/
33 
34 #ifndef	__ASM_GBL_DATA_H
35 #define __ASM_GBL_DATA_H
36 /*
37  * The following data structure is placed in some memory wich is
38  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
39  * some locked parts of the data cache) to allow for a minimum set of
40  * global variables during system initialization (until we have set
41  * up the memory controller so that we can use RAM).
42  */
43 
44 typedef	struct global_data {
45 	bd_t		*bd;
46 	unsigned long	flags;
47 	unsigned long	baudrate;
48 	unsigned long	have_console;	/* serial_init() was called */
49 
50 	unsigned long	reloc_off;	/* Relocation Offset */
51 	unsigned long	env_addr;	/* Address  of Environment struct */
52 	unsigned long	env_valid;	/* Checksum of Environment valid? */
53 	unsigned long	fb_base;	/* base address of frame buffer */
54 
55 	unsigned long	relocaddr;	/* Start address of U-Boot in RAM */
56 	phys_size_t	ram_size;	/* RAM size */
57 	unsigned long	mon_len;	/* monitor len */
58 	unsigned long	irq_sp;		/* irq stack pointer */
59 	unsigned long	start_addr_sp;	/* start_addr_stackpointer */
60 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
61 	unsigned long	tlb_addr;
62 #endif
63 
64 	void		**jt;		/* jump table */
65 	char		env_buf[32];	/* buffer for getenv() before reloc. */
66 } gd_t;
67 
68 #include <asm-generic/global_data_flags.h>
69 
70 #ifdef CONFIG_GLOBAL_DATA_NOT_REG10
71 extern volatile gd_t g_gd;
72 #define DECLARE_GLOBAL_DATA_PTR		static volatile gd_t *gd = &g_gd
73 #else
74 #define DECLARE_GLOBAL_DATA_PTR		register volatile gd_t *gd asm ("$r10")
75 #endif
76 
77 #endif /* __ASM_GBL_DATA_H */
78