kernel-hacking-2024-linux-s.../arch/m68k/include/asm/coldfire.h
Greg Ungerer d9ee489619 m68knommu: force setting of CONFIG_CLOCK_FREQ for ColdFire
It is possible to disable the clock selection at configuration time,
but for ColdFire targets we always expect a clock frequency to be
selected. This results in the following compile time error:

  CC      arch/m68k/kernel/asm-offsets.s
In file included from ./arch/m68k/include/asm/timex.h:14:0,
                 from include/linux/timex.h:65,
                 from include/linux/sched.h:19,
                 from arch/m68k/kernel/asm-offsets.c:14:
./arch/m68k/include/asm/coldfire.h:25:2: error: #error "Don't know what your ColdFire CPU clock frequency is??"

Remove CONFIG_CLOCK_SELECT completely and always enable CONFIG_CLOCK_FREQ
for ColdFire.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-07-13 09:34:39 +10:00

49 lines
1.6 KiB
C

/****************************************************************************/
/*
* coldfire.h -- Motorola ColdFire CPU sepecific defines
*
* (C) Copyright 1999-2006, Greg Ungerer (gerg@snapgear.com)
* (C) Copyright 2000, Lineo (www.lineo.com)
*/
/****************************************************************************/
#ifndef coldfire_h
#define coldfire_h
/****************************************************************************/
/*
* Define master clock frequency. This is done at config time now.
* No point enumerating dozens of possible clock options here. And
* in any case new boards come along from time to time that have yet
* another different clocking frequency.
*/
#ifdef CONFIG_CLOCK_FREQ
#define MCF_CLK CONFIG_CLOCK_FREQ
#else
#error "Don't know what your ColdFire CPU clock frequency is??"
#endif
/*
* Define the processor internal peripherals base address.
*
* The majority of ColdFire parts use an MBAR register to set
* the base address. Some have an IPSBAR register instead, and it
* has slightly different rules on its size and alignment. Some
* parts have fixed addresses and the internal peripherals cannot
* be relocated in the CPU address space.
*
* The value of MBAR or IPSBAR is config time selectable, we no
* longer hard define it here. No MBAR or IPSBAR will be defined if
* this part has a fixed peripheral address map.
*/
#ifdef CONFIG_MBAR
#define MCF_MBAR CONFIG_MBAR
#endif
#ifdef CONFIG_IPSBAR
#define MCF_IPSBAR CONFIG_IPSBAR
#endif
/****************************************************************************/
#endif /* coldfire_h */