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Diffstat (limited to 'tools/perf/arch/powerpc/util/header.c')
-rw-r--r--tools/perf/arch/powerpc/util/header.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
new file mode 100644
index 000000000000..eba80c292945
--- /dev/null
+++ b/tools/perf/arch/powerpc/util/header.c
@@ -0,0 +1,36 @@
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../util/header.h"
+
+#define __stringify_1(x) #x
+#define __stringify(x) __stringify_1(x)
+
+#define mfspr(rn) ({unsigned long rval; \
+ asm volatile("mfspr %0," __stringify(rn) \
+ : "=r" (rval)); rval; })
+
+#define SPRN_PVR 0x11F /* Processor Version Register */
+#define PVR_VER(pvr) (((pvr) >> 16) & 0xFFFF) /* Version field */
+#define PVR_REV(pvr) (((pvr) >> 0) & 0xFFFF) /* Revison field */
+
+int
+get_cpuid(char *buffer, size_t sz)
+{
+ unsigned long pvr;
+ int nb;
+
+ pvr = mfspr(SPRN_PVR);
+
+ nb = snprintf(buffer, sz, "%lu,%lu$", PVR_VER(pvr), PVR_REV(pvr));
+
+ /* look for end marker to ensure the entire data fit */
+ if (strchr(buffer, '$')) {
+ buffer[nb-1] = '\0';
+ return 0;
+ }
+ return -1;
+}