Adding upstream version 2.06.upstream/2.06upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 77 insertions, 0 deletions

diff --git a/grub-core/kern/generic/millisleep.c b/grub-core/kern/generic/millisleep.c
new file mode 100644
index 0000000..9d5971f
--- /dev/null
+++ b/grub-core/kern/generic/millisleep.c
@@ -0,0 +1,39 @@
+/* millisleep.c - generic millisleep function.
+ * The generic implementation of these functions can be used for architectures
+ * or platforms that do not have a more specialized implementation. */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/misc.h>
+#include <grub/time.h>
+
+void
+grub_millisleep (grub_uint32_t ms)
+{
+  grub_uint64_t start;
+
+  start = grub_get_time_ms ();
+
+  /* Instead of setting an end time and looping while the current time is
+     less than that, comparing the elapsed sleep time with the desired sleep
+     time handles the (unlikely!) case that the timer would wrap around
+     during the sleep. */
+
+  while (grub_get_time_ms () - start < ms)
+    grub_cpu_idle ();
+}
diff --git a/grub-core/kern/generic/rtc_get_time_ms.c b/grub-core/kern/generic/rtc_get_time_ms.c
new file mode 100644
index 0000000..3e39c8f
--- /dev/null
+++ b/grub-core/kern/generic/rtc_get_time_ms.c
@@ -0,0 +1,38 @@
+/* rtc_get_time_ms.c - get_time_ms implementation using platform RTC.
+ * The generic implementation of these functions can be used for architectures
+ * or platforms that do not have a more specialized implementation. */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2008  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/time.h>
+#include <grub/misc.h>
+#include <grub/machine/time.h>
+
+/* Calculate the time in milliseconds since the epoch based on the RTC. */
+grub_uint64_t
+grub_rtc_get_time_ms (void)
+{
+  /* By dimensional analysis:
+
+      1000 ms   N rtc ticks       1 s
+      ------- * ----------- * ----------- = 1000*N/T ms
+        1 s          1        T rtc ticks
+   */
+  grub_uint64_t ticks_ms_per_sec = ((grub_uint64_t) 1000) * grub_get_rtc ();
+  return grub_divmod64 (ticks_ms_per_sec, GRUB_TICKS_PER_SECOND ? : 1000, 0);
+}