xref: /openbmc/linux/arch/m68k/include/asm/coldfire.h (revision b6dcefde)
1 /****************************************************************************/
2 
3 /*
4  *	coldfire.h -- Motorola ColdFire CPU sepecific defines
5  *
6  *	(C) Copyright 1999-2006, Greg Ungerer (gerg@snapgear.com)
7  *	(C) Copyright 2000, Lineo (www.lineo.com)
8  */
9 
10 /****************************************************************************/
11 #ifndef	coldfire_h
12 #define	coldfire_h
13 /****************************************************************************/
14 
15 
16 /*
17  *	Define master clock frequency. This is essentially done at config
18  *	time now. No point enumerating dozens of possible clock options
19  *	here. Also the peripheral clock (bus clock) divide ratio is set
20  *	at config time too.
21  */
22 #ifdef CONFIG_CLOCK_SET
23 #define	MCF_CLK		CONFIG_CLOCK_FREQ
24 #define	MCF_BUSCLK	(CONFIG_CLOCK_FREQ / CONFIG_CLOCK_DIV)
25 #else
26 #error "Don't know what your ColdFire CPU clock frequency is??"
27 #endif
28 
29 /*
30  *	Define the processor support peripherals base address.
31  *	This is generally setup by the boards start up code.
32  */
33 #define	MCF_MBAR	0x10000000
34 #define	MCF_MBAR2	0x80000000
35 #if defined(CONFIG_M520x)
36 #define	MCF_IPSBAR	0xFC000000
37 #else
38 #define	MCF_IPSBAR	0x40000000
39 #endif
40 
41 #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
42     defined(CONFIG_M520x)
43 #undef MCF_MBAR
44 #define	MCF_MBAR	MCF_IPSBAR
45 #elif defined(CONFIG_M532x)
46 #undef MCF_MBAR
47 #define MCF_MBAR	0x00000000
48 #endif
49 
50 /****************************************************************************/
51 #endif	/* coldfire_h */
52