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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
parent01433d60016a5aa4b53608f816e1e220f0108546 (diff)
downloadu-boot-linaro-stable-53fdc7ef2e43902c4415a81a434c35f9ed8713bc.tar.gz
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>
-rw-r--r--README1
-rw-r--r--common/Makefile1
-rw-r--r--common/cmd_gettime.c56
-rw-r--r--include/config_cmd_all.h1
4 files changed, 59 insertions, 0 deletions
diff --git a/README b/README
index 5a86ae9c5..d1c60de0a 100644
--- a/README
+++ b/README
@@ -824,6 +824,7 @@ The following options need to be configured:
CONFIG_CMD_FDOS * Dos diskette Support
CONFIG_CMD_FLASH flinfo, erase, protect
CONFIG_CMD_FPGA FPGA device initialization support
+ CONFIG_CMD_GETTIME * Get time since boot
CONFIG_CMD_GO * the 'go' command (exec code)
CONFIG_CMD_GREPENV * search environment
CONFIG_CMD_HWFLOW * RTS/CTS hw flow control
diff --git a/common/Makefile b/common/Makefile
index c29a7d82e..b3a603209 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -100,6 +100,7 @@ ifdef CONFIG_FPGA
COBJS-$(CONFIG_CMD_FPGA) += cmd_fpga.o
endif
COBJS-$(CONFIG_CMD_FS_GENERIC) += cmd_fs.o
+COBJS-$(CONFIG_CMD_GETTIME) += cmd_gettime.o
COBJS-$(CONFIG_CMD_GPIO) += cmd_gpio.o
COBJS-$(CONFIG_CMD_I2C) += cmd_i2c.o
COBJS-$(CONFIG_CMD_IDE) += cmd_ide.o
diff --git a/common/cmd_gettime.c b/common/cmd_gettime.c
new file mode 100644
index 000000000..d7d36a987
--- /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"
+);
diff --git a/include/config_cmd_all.h b/include/config_cmd_all.h
index f434cd089..b87967e42 100644
--- a/include/config_cmd_all.h
+++ b/include/config_cmd_all.h
@@ -40,6 +40,7 @@
#define CONFIG_CMD_FDOS /* Floppy DOS support */
#define CONFIG_CMD_FLASH /* flinfo, erase, protect */
#define CONFIG_CMD_FPGA /* FPGA configuration Support */
+#define CONFIG_CMD_GETTIME /* Get time since boot */
#define CONFIG_CMD_HWFLOW /* RTS/CTS hw flow control */
#define CONFIG_CMD_I2C /* I2C serial bus support */
#define CONFIG_CMD_IDE /* IDE harddisk support */