aboutsummaryrefslogtreecommitdiff
path: root/src/include/cpu/p5/cpuid.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/include/cpu/p5/cpuid.h')
-rw-r--r--src/include/cpu/p5/cpuid.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/include/cpu/p5/cpuid.h b/src/include/cpu/p5/cpuid.h
new file mode 100644
index 0000000000..b8ffc88a84
--- /dev/null
+++ b/src/include/cpu/p5/cpuid.h
@@ -0,0 +1,25 @@
+#ifndef CPU_P5_CPUID_H
+#define CPU_P5_CPUID_H
+
+int mtrr_check(void);
+void display_cpuid(void);
+
+/*
+ * Generic CPUID function. copied from Linux kernel headers
+ */
+
+static inline void cpuid(int op, int *eax, int *ebx, int *ecx, int *edx)
+{
+ __asm__("pushl %%ebx\n\t"
+ "cpuid\n\t"
+ "movl %%ebx, %%esi\n\t"
+ "popl %%ebx\n\t"
+ : "=a" (*eax),
+ "=S" (*ebx),
+ "=c" (*ecx),
+ "=d" (*edx)
+ : "a" (op)
+ : "cc");
+}
+
+#endif /* CPU_P5_CPUID_H */