b195c47924
Different ColdFire CPUs have different ways of defining where their internal peripheral registers sit in their address space. Some use an MBAR register, some use and IPSBAR register, some have a fixed mapping. Now that most of the peripheral address definitions have been cleaned up we can clean up the setting of the MBAR and IPSBAR defines to limit them to just where they are needed (and where they actually exist). Signed-off-by: Greg Ungerer <gerg@uclinux.org>
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/****************************************************************************/
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/*
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* coldfire.h -- Motorola ColdFire CPU sepecific defines
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*
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* (C) Copyright 1999-2006, Greg Ungerer (gerg@snapgear.com)
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* (C) Copyright 2000, Lineo (www.lineo.com)
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*/
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/****************************************************************************/
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#ifndef coldfire_h
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#define coldfire_h
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/****************************************************************************/
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/*
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* Define master clock frequency. This is essentially done at config
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* time now. No point enumerating dozens of possible clock options
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* here. Also the peripheral clock (bus clock) divide ratio is set
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* at config time too.
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*/
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#ifdef CONFIG_CLOCK_SET
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#define MCF_CLK CONFIG_CLOCK_FREQ
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#define MCF_BUSCLK (CONFIG_CLOCK_FREQ / CONFIG_CLOCK_DIV)
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#else
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#error "Don't know what your ColdFire CPU clock frequency is??"
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#endif
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/*
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* Define the processor internal peripherals base address.
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*
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* The majority of ColdFire parts use an MBAR register to set
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* the base address. Some have an IPSBAR register instead, and it
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* has slightly different rules on its size and alignment. Some
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* parts have fixed addresses and the internal peripherals cannot
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* be relocated in the address space.
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*
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* This is generally setup by the boards start up code.
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*/
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#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x)
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#define MCF_IPSBAR 0x40000000
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#else
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#define MCF_MBAR 0x10000000
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#endif
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/****************************************************************************/
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#endif /* coldfire_h */
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