boot_stats: add support for bootup timestamps

Bootup timestamps can be logged at various points and
made available to the kernel through shared memory.
API implementation is platform specific and this change
only adds a dummy function.

Change-Id: I930d3385125ab3d8086518a8bc4481892d2bb34d

2 files changed, 53 insertions, 0 deletions

diff --git a/include/boot_stats.h b/include/boot_stats.h
new file mode 100644
index 00000000..01774846
--- /dev/null
+++ b/include/boot_stats.h
@@ -0,0 +1,48 @@
+/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Fundation, Inc. nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __BOOT_STATS_H
+#define __BOOT_STATS_H
+
+/* The order of the entries in this enum does not correspond to bootup order.
+ * It is mandated by the expected order of the entries in imem when the values
+ * are read in the kernel.
+ */
+enum bs_entry {
+	BS_BL_START = 0,
+	BS_KERNEL_ENTRY,
+	BS_SPLASH_SCREEN_DISPLAY,
+	BS_KERNEL_LOAD_TIME,
+	BS_KERNEL_LOAD_START,
+	BS_KERNEL_LOAD_DONE,
+	BS_MAX,
+};
+void bs_set_timestamp(enum bs_entry bs_id);
+
+#endif
diff --git a/platform/init.c b/platform/init.c
index 30f3e519..0c5a8506 100644
--- a/platform/init.c
+++ b/platform/init.c
@@ -23,6 +23,7 @@
 #include <err.h>
 #include <debug.h>
 #include <platform.h>
+#include <boot_stats.h>
 
 /*
  * default implementations of these routines, if the platform code
@@ -90,3 +91,7 @@ __WEAK int image_verify(unsigned char * image_ptr,
 __WEAK ce_clock_init(void)
 {
 }
+
+__WEAK void bs_set_timestamp(enum bs_entry bs_id)
+{
+}