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authorAnton Staaf <robotboy@chromium.org>2012-12-05 14:46:29 +0000
committerTom Rini <trini@ti.com>2012-12-11 13:17:33 -0700
commit53fdc7ef2e43902c4415a81a434c35f9ed8713bc (patch)
treefa7765b0b3177409e40b2a95faa09e2699dd9f63 /common/cmd_gettime.c
parent01433d60016a5aa4b53608f816e1e220f0108546 (diff)
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Add gettime command
Gettime returns the current timer value. If CONFIG_SYS_HZ is defined then the timer value is also converted to seconds. Tegra20 (SeaBoard) # gettime Timer val: 7754 Seconds : 7 Remainder : 754 sys_hz = 1000 There has been some discussion about whether this is useful enough to be included in U-Boot. The following boards do not have CONFIG_SYS_HZ defined: M52277EVB M52277EVB_stmicro M53017EVB M54418TWR M54418TWR_nand_mii M54418TWR_nand_rmii M54418TWR_nand_rmii_lowfreq M54418TWR_serial_mii M54418TWR_serial_rmii Signed-off-by: Anton Staaf <robotboy@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common/cmd_gettime.c')
-rw-r--r--common/cmd_gettime.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/common/cmd_gettime.c b/common/cmd_gettime.c
new file mode 100644
index 0000000..d7d36a9
--- /dev/null
+++ b/common/cmd_gettime.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+ *
+ * Copyright (c) 2009, Code Aurora Forum. All rights reserved.
+ *
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Get Timer overflows after 2^32 / CONFIG_SYS_HZ (32Khz) = 131072 sec
+ */
+#include <common.h>
+#include <command.h>
+
+static int do_gettime(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ unsigned long int val = get_timer(0);
+
+#ifdef CONFIG_SYS_HZ
+ printf("Timer val: %lu\n", val);
+ printf("Seconds : %lu\n", val / CONFIG_SYS_HZ);
+ printf("Remainder : %lu\n", val % CONFIG_SYS_HZ);
+ printf("sys_hz = %lu\n", (unsigned long int)CONFIG_SYS_HZ);
+#else
+ printf("CONFIG_SYS_HZ not defined");
+ printf("Timer Val %lu", val);
+#endif
+
+ return 0;
+}
+
+U_BOOT_CMD(
+ gettime, 1, 1, do_gettime,
+ "get timer val elapsed,\n",
+ "get time elapsed from uboot start\n"
+);