From 21a83053ab619f00fce457c717c496d3b0dc7b4d Mon Sep 17 00:00:00 2001
From: Michael Olbrich <m.olbrich@pengutronix.de>
Date: Fri, 17 Jul 2015 21:22:42 +0200
Subject: efi: write volatile EFI variables used by systemd

LoaderTimeInitUSec and LoaderTimeExecUSec are used e.g. in systemd-analyze
to calculate the time spent in the firmare and barebox.

LoaderDevicePartUUID is used to mount the EFI partition to /boot.

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/efi/efi/efi-image.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'arch/efi/efi/efi-image.c')

diff --git a/arch/efi/efi/efi-image.c b/arch/efi/efi/efi-image.c
index de9b277556..b6437f4078 100644
--- a/arch/efi/efi/efi-image.c
+++ b/arch/efi/efi/efi-image.c
@@ -17,6 +17,7 @@
  *
  */
 
+#include <clock.h>
 #include <common.h>
 #include <linux/sizes.h>
 #include <memory.h>
@@ -242,6 +243,10 @@ static int do_bootm_efi(struct image_data *data)
 			       boot_header->ramdisk_image);
 		printf("...\n");
 	}
+
+	efi_set_variable_usec("LoaderTimeExecUSec", &efi_systemd_vendor_guid,
+			      get_time_ns()/1000);
+
 	linux_efi_handover(handle, boot_header);
 
 	return 0;
-- 
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