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1 /*
2  * arch/arm/mach-sa1100/include/mach/hardware.h
3  *
4  * Copyright (C) 1998 Nicolas Pitre <nico@fluxnic.net>
5  *
6  * This file contains the hardware definitions for SA1100 architecture
7  *
8  * 2000/05/23 John Dorsey <john+@cs.cmu.edu>
9  *      Definitions for SA1111 added.
10  */
11 
12 #ifndef __ASM_ARCH_HARDWARE_H
13 #define __ASM_ARCH_HARDWARE_H
14 
15 
16 #define UNCACHEABLE_ADDR	0xfa050000
17 
18 
19 /*
20  * SA1100 internal I/O mappings
21  *
22  * We have the following mapping:
23  *      phys            virt
24  *      80000000        f8000000
25  *      90000000        fa000000
26  *      a0000000        fc000000
27  *      b0000000        fe000000
28  */
29 
30 #define VIO_BASE        0xf8000000	/* virtual start of IO space */
31 #define VIO_SHIFT       3		/* x = IO space shrink power */
32 #define PIO_START       0x80000000	/* physical start of IO space */
33 
34 #define io_p2v( x )             \
35    IOMEM( (((x)&0x00ffffff) | (((x)&0x30000000)>>VIO_SHIFT)) + VIO_BASE )
36 #define io_v2p( x )             \
37    ( (((x)&0x00ffffff) | (((x)&(0x30000000>>VIO_SHIFT))<<VIO_SHIFT)) + PIO_START )
38 
39 #define CPU_SA1110_A0	(0)
40 #define CPU_SA1110_B0	(4)
41 #define CPU_SA1110_B1	(5)
42 #define CPU_SA1110_B2	(6)
43 #define CPU_SA1110_B4	(8)
44 
45 #define CPU_SA1100_ID	(0x4401a110)
46 #define CPU_SA1100_MASK	(0xfffffff0)
47 #define CPU_SA1110_ID	(0x6901b110)
48 #define CPU_SA1110_MASK	(0xfffffff0)
49 
50 #define __MREG(x)	IOMEM(io_p2v(x))
51 
52 #ifndef __ASSEMBLY__
53 
54 #include <asm/cputype.h>
55 
56 #define CPU_REVISION	(read_cpuid_id() & 15)
57 
58 #define cpu_is_sa1100()	((read_cpuid_id() & CPU_SA1100_MASK) == CPU_SA1100_ID)
59 #define cpu_is_sa1110()	((read_cpuid_id() & CPU_SA1110_MASK) == CPU_SA1110_ID)
60 
61 # define __REG(x)	(*((volatile unsigned long __iomem *)io_p2v(x)))
62 # define __PREG(x)	(io_v2p((unsigned long)&(x)))
63 
get_clock_tick_rate(void)64 static inline unsigned long get_clock_tick_rate(void)
65 {
66 	return 3686400;
67 }
68 #else
69 
70 # define __REG(x)	io_p2v(x)
71 # define __PREG(x)	io_v2p(x)
72 
73 #endif
74 
75 #include "SA-1100.h"
76 
77 #ifdef CONFIG_SA1101
78 #include "SA-1101.h"
79 #endif
80 
81 #endif  /* _ASM_ARCH_HARDWARE_H */
82