* Command can be enabled by CONFIG_CMD_CLEAR * Added some ANSI escape codes definitions in common.h
Signed-off-by: Pali Rohár pali.rohar@gmail.com Cc: Marcel Mol marcel@mesa.nl --- Changes since original version: - Renamed command clr to clear - Use puts instead printf - Move cursor to pos1,1 - Merged parts of patch "Add some ANSI escape codes definitions in common.h"
common/Makefile | 1 + common/cmd_clear.c | 42 ++++++++++++++++++++++++++++++++++++++++++ include/common.h | 7 +++++++ include/config_cmd_all.h | 1 + 4 files changed, 51 insertions(+) create mode 100644 common/cmd_clear.c
diff --git a/common/Makefile b/common/Makefile index d9f10f3..0682a49 100644 --- a/common/Makefile +++ b/common/Makefile @@ -70,6 +70,7 @@ COBJS-$(CONFIG_CMD_BEDBUG) += bedbug.o cmd_bedbug.o COBJS-$(CONFIG_CMD_BMP) += cmd_bmp.o COBJS-$(CONFIG_CMD_BOOTLDR) += cmd_bootldr.o COBJS-$(CONFIG_CMD_CACHE) += cmd_cache.o +COBJS-$(CONFIG_CMD_CLEAR) += cmd_clear.o COBJS-$(CONFIG_CMD_CONSOLE) += cmd_console.o COBJS-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o COBJS-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o diff --git a/common/cmd_clear.c b/common/cmd_clear.c new file mode 100644 index 0000000..597611e --- /dev/null +++ b/common/cmd_clear.c @@ -0,0 +1,42 @@ +/* + * Copyright 2011 + * Marcel Mol, MESA Consulting, marcel@mesa.nl + * + * Copyright 2011 + * Pali Rohár, pali.rohar@gmail.com + * + * 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 + */ + +#include <common.h> +#include <command.h> + +static int do_clear(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + puts(ANSI_CLEAR_CONSOLE); + printf(ANSI_CURSOR_POSITION, 1, 1); + return 0; +} + +U_BOOT_CMD( + clear, CONFIG_SYS_MAXARGS, 1, do_clear, + "clear", + "\n" + " - clear screen and move cursor to top of screen" +); diff --git a/include/common.h b/include/common.h index 4b5841e..26bfd95 100644 --- a/include/common.h +++ b/include/common.h @@ -743,6 +743,13 @@ void clear_ctrlc (void); /* clear the Control-C condition */ int disable_ctrlc (int); /* 1 to disable, 0 to enable Control-C detect */
/* + * ANSI terminal + */ + +#define ANSI_CURSOR_POSITION "\e[%d;%dH" +#define ANSI_CLEAR_CONSOLE "\e[2J" + +/* * STDIO based functions (can always be used) */ /* serial stuff */ diff --git a/include/config_cmd_all.h b/include/config_cmd_all.h index 2c6b829..243098a 100644 --- a/include/config_cmd_all.h +++ b/include/config_cmd_all.h @@ -24,6 +24,7 @@ #define CONFIG_CMD_BSP /* Board Specific functions */ #define CONFIG_CMD_CACHE /* icache, dcache */ #define CONFIG_CMD_CDP /* Cisco Discovery Protocol */ +#define CONFIG_CMD_CLEAR /* ANSI clear screen command */ #define CONFIG_CMD_CONSOLE /* coninfo */ #define CONFIG_CMD_DATE /* support for RTC, date/time...*/ #define CONFIG_CMD_DHCP /* DHCP Support */