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Add gettime command

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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>
This commit is contained in:
Anton Staaf 2012-12-05 14:46:29 +00:00 committed by Tom Rini
parent 01433d6001
commit 53fdc7ef2e
4 changed files with 59 additions and 0 deletions
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1
README
View File

@ -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

1
common/Makefile
View File

@ -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

56
common/cmd_gettime.c Normal file
View File

@ -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"
);

1
include/config_cmd_all.h
View File

@ -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 */