Ticket #6061: 0003-system_time-Fall-back-to-get-msecs-if-milliseconds-f.patch

headers/private/kernel/platform/openfirmware/openfirmware.h

@@ -74 +74 @@
     int numReturns, ...);
 extern int of_test(const char *service);
 extern int of_milliseconds(void);
+extern int of_get_msecs(void);
 extern void of_exit(void);
 
 #ifdef __cplusplus

src/system/boot/platform/openfirmware/support.cpp

@@ -10 +10 @@
 bigtime_t
 system_time(void)
 {
-    int result = of_milliseconds();
-    return (result == OF_FAILED ? 0 : bigtime_t(result) * 1000);
+    int milliseconds = of_milliseconds();
+    if (milliseconds == OF_FAILED) {
+        milliseconds = of_get_msecs();
+    }
+    return (milliseconds == OF_FAILED ? 0 : bigtime_t(milliseconds) * 1000);
 }

src/system/kernel/platform/openfirmware/openfirmware.cpp

@@ -566 +566 @@
 }
 
 
+int
+of_get_msecs(void)
+{
+    struct {
+        const char  *name;
+        int         num_args;
+        int         num_returns;
+        int         milliseconds;
+    } args = { "get-msecs", 0, 1, 0 };
+
+    if (gCallOpenFirmware(&args) == OF_FAILED)
+        return OF_FAILED;
+
+    return args.milliseconds;
+}
+
+
 void
 of_exit(void)
 {