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authorDave Jones <davej@redhat.com>2008-05-22 18:57:25 -0400
committerH. Peter Anvin <hpa@zytor.com>2008-05-30 15:46:30 -0700
commit30a713180b3d08fdec5ca572e5a1cd35253c5d8e (patch)
tree4d286cbf8dbbaaca40241aa8dffe203cb2acd75d /arch/x86/kernel/cpu/centaur_64.c
parent7e2191127eb414d7d5a11df6552ab6e3845d17a1 (diff)
x86: Move the 64-bit Centaur specific parts out of setup_64.c
Create a separate centaur_64.c file in the cpu/ dir for the useful parts to live in. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/cpu/centaur_64.c')
-rw-r--r--arch/x86/kernel/cpu/centaur_64.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/centaur_64.c b/arch/x86/kernel/cpu/centaur_64.c
new file mode 100644
index 00000000000..bac96d187d0
--- /dev/null
+++ b/arch/x86/kernel/cpu/centaur_64.c
@@ -0,0 +1,31 @@
+#include <linux/init.h>
+#include <linux/smp.h>
+
+#include <asm/cpufeature.h>
+#include <asm/processor.h>
+
+void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
+{
+ if (c->x86 == 0x6 && c->x86_model >= 0xf)
+ set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
+}
+
+void __cpuinit init_centaur(struct cpuinfo_x86 *c)
+{
+ /* Cache sizes */
+ unsigned n;
+
+ n = c->extended_cpuid_level;
+ if (n >= 0x80000008) {
+ unsigned eax = cpuid_eax(0x80000008);
+ c->x86_virt_bits = (eax >> 8) & 0xff;
+ c->x86_phys_bits = eax & 0xff;
+ }
+
+ if (c->x86 == 0x6 && c->x86_model >= 0xf) {
+ c->x86_cache_alignment = c->x86_clflush_size * 2;
+ set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
+ set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+ }
+ set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
+}