From: Simon Glass <sjg@chromium.org>
Date: Wed, 28 Jan 2015 05:13:44 +0000 (-0700)
Subject: scsi: bootstage: Measure time taken to scan the bus
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=abbdb262570f415b5eaea036486076669eff1e76;p=u-boot.git

scsi: bootstage: Measure time taken to scan the bus

On some hardware this time can be significant. Add bootstage support for
measuring this. The result can be obtained using 'bootstage report' or
passed on to the Linux via the device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---

diff --git a/common/cmd_scsi.c b/common/cmd_scsi.c
index cbc107ea50..a0a62ebdca 100644
--- a/common/cmd_scsi.c
+++ b/common/cmd_scsi.c
@@ -217,8 +217,10 @@ void scsi_init(void)
 		       (busdevfunc >> 8) & 0x7);
 	}
 #endif
+	bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
 	scsi_low_level_init(busdevfunc);
 	scsi_scan(1);
+	bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
 }
 #endif
 
diff --git a/include/bootstage.h b/include/bootstage.h
index df13ab2f63..6b7588d38f 100644
--- a/include/bootstage.h
+++ b/include/bootstage.h
@@ -194,6 +194,7 @@ enum bootstage_id {
 	BOOTSTAGE_ID_MAIN_CPU_READY,
 
 	BOOTSTAGE_ID_ACCUM_LCD,
+	BOOTSTAGE_ID_ACCUM_SCSI,
 
 	/* a few spare for the user, from here */
 	BOOTSTAGE_ID_USER,