[U-Boot] [PATCH v2 19/22] scsi: bootstage: Measure time taken to scan the bus

[Simon Glass]

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 at chromium.org>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---

Changes in v2: None

 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 cbc107e..a0a62eb 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 df13ab2..6b7588d 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,
-- 
2.2.0.rc0.207.ga3a616c