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mem.h
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1 /*
2  * Copyright (C) 2009 Lemote, Inc.
3  * Author: Wu Zhangjin <[email protected]>
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License as published by the
7  * Free Software Foundation; either version 2 of the License, or (at your
8  * option) any later version.
9  */
10 
11 #ifndef __ASM_MACH_LOONGSON_MEM_H
12 #define __ASM_MACH_LOONGSON_MEM_H
13 
14 /*
15  * high memory space
16  *
17  * in loongson2e, starts from 512M
18  * in loongson2f, starts from 2G 256M
19  */
20 #ifdef CONFIG_CPU_LOONGSON2E
21 #define LOONGSON_HIGHMEM_START 0x20000000
22 #else
23 #define LOONGSON_HIGHMEM_START 0x90000000
24 #endif
25 
26 /*
27  * the peripheral registers(MMIO):
28  *
29  * On the Lemote Loongson 2e system, reside between 0x1000:0000 and 0x2000:0000.
30  * On the Lemote Loongson 2f system, reside between 0x1000:0000 and 0x8000:0000.
31  */
32 
33 #define LOONGSON_MMIO_MEM_START 0x10000000
34 
35 #ifdef CONFIG_CPU_LOONGSON2E
36 #define LOONGSON_MMIO_MEM_END 0x20000000
37 #else
38 #define LOONGSON_MMIO_MEM_END 0x80000000
39 #endif
40 
41 #endif /* __ASM_MACH_LOONGSON_MEM_H */