From abbdb262570f415b5eaea036486076669eff1e76 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Tue, 27 Jan 2015 22:13:44 -0700
Subject: [PATCH] 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>
---
common/cmd_scsi.c | 2 ++
include/bootstage.h | 1 +
2 files changed, 3 insertions(+)
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,
--
2.39.5