diff options
| author | Greg Ungerer <gerg@uclinux.org> | 2010-11-02 08:40:37 +0100 |
|---|---|---|
| committer | Greg Ungerer <gerg@uclinux.org> | 2011-01-05 06:19:17 +0100 |
| commit | 733f31b764061d976a60c5ee454632d9562900ea (patch) | |
| tree | 7e7d5bceb6d6815c54a4c0ab37dddbd53dbe41a5 /arch/m68knommu/kernel | |
| parent | m68knommu: move ColdFire CPU names into their headers (diff) | |
| download | linux-733f31b764061d976a60c5ee454632d9562900ea.tar.xz linux-733f31b764061d976a60c5ee454632d9562900ea.zip | |
m68knommu: fix clock rate value reported for ColdFire 54xx parts
The instruction timings of the ColdFire 54xx family parts are
different to other version 4 parts (or version 2 or 3 parts for
that matter too).
Move the instruction timing setting into the ColdFire part
specific headers, and set the 54xx value appropriately.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'arch/m68knommu/kernel')
| -rw-r--r-- | arch/m68knommu/kernel/setup.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/arch/m68knommu/kernel/setup.c b/arch/m68knommu/kernel/setup.c index f48d9df484d3..5c931f9d392c 100644 --- a/arch/m68knommu/kernel/setup.c +++ b/arch/m68knommu/kernel/setup.c @@ -66,13 +66,20 @@ void (*mach_power_off)(void); #ifdef CONFIG_M68360 #define CPU_NAME "MC68360" #endif -/* - * The ColdFire CPU names are defined in their headers. - */ #ifndef CPU_NAME #define CPU_NAME "UNKNOWN" #endif +/* + * Different cores have different instruction execution timings. + * The old/traditional 68000 cores are basically all the same, at 16. + * The ColdFire cores vary a little, their values are defined in their + * headers. We default to the standard 68000 value here. + */ +#ifndef CPU_INSTR_PER_JIFFY +#define CPU_INSTR_PER_JIFFY 16 +#endif + extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end; extern int _ramstart, _ramend; @@ -273,12 +280,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) cpu = CPU_NAME; mmu = "none"; fpu = "none"; - -#ifdef CONFIG_COLDFIRE - clockfreq = (loops_per_jiffy * HZ) * 3; -#else - clockfreq = (loops_per_jiffy * HZ) * 16; -#endif + clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY; seq_printf(m, "CPU:\t\t%s\n" "MMU:\t\t%s\n" |