General help message cleanup

Many of the help messages were not really helpful; for example, many
commands that take no arguments would not print a correct synopsis
line, but "No additional help available." which is not exactly wrong,
but not helpful either.

Commit ``Make "usage" messages more helpful.'' changed this
partially. But it also became clear that lots of "Usage" and "Help"
messages (fields "usage" and "help" in struct cmd_tbl_s respective)
were actually redundant.

This patch cleans this up - for example:

Before:
	=> help dtt
	dtt - Digital Thermometer and Thermostat

	Usage:
	dtt         - Read temperature from digital thermometer and thermostat.

After:
	=> help dtt
	dtt - Read temperature from Digital Thermometer and Thermostat

	Usage:
	dtt

Signed-off-by: Wolfgang Denk <wd@denx.de>

board/BuS/EB+MCF-EV123/EB+MCF-EV123.c

@@ -156,7 +156,7 @@ int do_vcimage (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 U_BOOT_CMD(
 	vcimage,	2,	0,	do_vcimage,
 	"loads an image to Display",
-	"vcimage addr\n"
+	"vcimage addr"
 );
 
 /* EOF EB+MCF-EV123c */

board/ads5121/ads5121_diu.c

@@ -131,7 +131,7 @@ U_BOOT_CMD(
 	diufb, CONFIG_SYS_MAXARGS, 1, ads5121diu_init_show_bmp,
 	"Init or Display BMP file",
 	"init\n    - initialize DIU\n"
-	"addr\n    - display bmp at address 'addr'\n"
+	"addr\n    - display bmp at address 'addr'"
 	);
 
 

board/amcc/acadia/cmd_acadia.c

@@ -97,5 +97,5 @@ static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 U_BOOT_CMD(
 	bootstrap,	3,	0,	do_bootstrap,
 	"program the I2C bootstrap EEPROM",
-	"<cpu-freq> <nor|nand> - program the I2C bootstrap EEPROM\n"
+	"<cpu-freq> <nor|nand> - program the I2C bootstrap EEPROM"
 );

board/amcc/canyonlands/bootstrap.c

@@ -191,5 +191,5 @@ static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 U_BOOT_CMD(
 	bootstrap,	2,	0,	do_bootstrap,
 	"program the I2C bootstrap EEPROM",
-	"<nand|nor> - strap to boot from NAND or NOR flash\n"
+	"<nand|nor> - strap to boot from NAND or NOR flash"
 );

board/amcc/katmai/cmd_katmai.c

@@ -214,5 +214,5 @@ static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 U_BOOT_CMD(
 	bootstrap,	3,	1,	do_bootstrap,
 	"program the serial device strap",
-	"wrclk [prom0|prom1] - program the serial device strap\n"
+	"wrclk [prom0|prom1] - program the serial device strap"
 );

board/amcc/kilauea/cmd_pll.c

@@ -291,7 +291,7 @@ U_BOOT_CMD(
 	RCONF: Read current eeprom configuration.      \n\
 	-----------------------------------------------\n\
 	WTEST: Test EEPROM write with predefined values\n\
-	-----------------------------------------------\n"
+	-----------------------------------------------"
 );
 
 #endif	/* CONFIG_CMD_EEPROM */

board/amcc/luan/luan.c

@@ -331,5 +331,5 @@ U_BOOT_CMD(
 	l2cache,   2,   1,     do_l2cache,
 	"enable or disable L2 cache",
 	"[on, off]\n"
-	"    - enable or disable L2 cache\n"
+	"    - enable or disable L2 cache"
 );

board/amcc/makalu/cmd_pll.c

@@ -291,7 +291,7 @@ U_BOOT_CMD(
 	RCONF: Read current eeprom configuration.      \n\
 	-----------------------------------------------\n\
 	WTEST: Test EEPROM write with predefined values\n\
-	-----------------------------------------------\n"
+	-----------------------------------------------"
 );
 
 #endif	/* CONFIG_CMD_EEPROM */

board/amcc/sequoia/cmd_sequoia.c

@@ -227,5 +227,5 @@ static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 U_BOOT_CMD(
 	bootstrap,	2,	0,	do_bootstrap,
 	"program the I2C bootstrap EEPROM",
-	"<nand|nor> - strap to boot from NAND or NOR flash\n"
+	"<nand|nor> - strap to boot from NAND or NOR flash"
 );

board/amcc/taihu/lcd.c

@@ -233,19 +233,19 @@ static int do_lcd_cur (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 U_BOOT_CMD(
 	lcd_cls, 1, 1, do_lcd_clear,
 	"lcd clear display",
-	NULL
+	""
 );
 
 U_BOOT_CMD(
 	lcd_puts, 2, 1, do_lcd_puts,
 	"display string on lcd",
-	"<string> - <string> to be displayed\n"
+	"<string> - <string> to be displayed"
 );
 
 U_BOOT_CMD(
 	lcd_putc, 2, 1, do_lcd_putc,
 	"display char on lcd",
-	"<char> - <char> to be displayed\n"
+	"<char> - <char> to be displayed"
 );
 
 U_BOOT_CMD(
@@ -253,5 +253,5 @@ U_BOOT_CMD(
 	"shift cursor on lcd",
 	"<count> <dir> - shift cursor on lcd <count> times, direction is <dir> \n"
 	" <count> - 0..31\n"
-	" <dir>   - 0=backward 1=forward\n"
+	" <dir>   - 0=backward 1=forward"
 );

board/amcc/taihu/taihu.c

@@ -94,7 +94,7 @@ static int do_sw_stat(cmd_tbl_t* cmd_tp, int flags, int argc, char *argv[])
 U_BOOT_CMD (
 	sw2_stat, 1, 1, do_sw_stat,
 	"show status of switch 2",
-	NULL
+	""
 );
 
 static int do_led_ctl(cmd_tbl_t* cmd_tp, int flags, int argc, char *argv[])
@@ -134,7 +134,7 @@ U_BOOT_CMD (
 	led_ctl, 3, 1, do_led_ctl,
 	"make led 1 or 2  on or off",
 	"<led_no> <on/off>	-  make led <led_no> on/off,\n"
-	"\tled_no is 1 or 2\t"
+	"\tled_no is 1 or 2"
 );
 
 #define SPI_CS_GPIO0	0

board/amcc/taihu/update.c

@@ -128,5 +128,5 @@ static int update_boot_eeprom(cmd_tbl_t* cmdtp, int flag, int argc, char *argv[]
 U_BOOT_CMD (
 	update_boot_eeprom, 1, 1, update_boot_eeprom,
 	"update boot eeprom content",
-	NULL
+	""
 );

board/amcc/taishan/lcd.c

@@ -254,18 +254,18 @@ static int do_lcd_cur(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 	return 0;
 }
 
-U_BOOT_CMD(lcd_test, 1, 1, do_lcd_test, "lcd test display", NULL);
-U_BOOT_CMD(lcd_cls, 1, 1, do_lcd_clear, "lcd clear display", NULL);
+U_BOOT_CMD(lcd_test, 1, 1, do_lcd_test, "lcd test display", "");
+U_BOOT_CMD(lcd_cls, 1, 1, do_lcd_clear, "lcd clear display", "");
 U_BOOT_CMD(lcd_puts, 2, 1, do_lcd_puts,
 	   "display string on lcd",
-	   "<string> - <string> to be displayed\n");
+	   "<string> - <string> to be displayed");
 U_BOOT_CMD(lcd_putc, 2, 1, do_lcd_putc,
 	   "display char on lcd",
-	   "<char> - <char> to be displayed\n");
+	   "<char> - <char> to be displayed");
 U_BOOT_CMD(lcd_cur, 3, 1, do_lcd_cur,
 	   "shift cursor on lcd",
 	   "<count> <dir>- shift cursor on lcd <count> times, direction is <dir> \n"
-	   " <count> - 0~31\n" " <dir> - 0,backward; 1, forward\n");
+	   " <count> - 0~31\n" " <dir> - 0,backward; 1, forward");
 
 #if 0 /* test-only */
 void set_phy_loopback_mode(void)
@@ -373,8 +373,8 @@ static int do_led_test_on(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 }
 
 U_BOOT_CMD(ledon, 1, 1, do_led_test_on,
-	   "led test light on", NULL);
+	   "led test light on", "");
 
 U_BOOT_CMD(ledoff, 1, 1, do_led_test_off,
-	   "led test light off", NULL);
+	   "led test light off", "");
 #endif

board/amcc/taishan/showinfo.c

@@ -168,7 +168,7 @@ int do_show_xbridge_info(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 }
 
 U_BOOT_CMD(xbriinfo, 1, 1, do_show_xbridge_info,
-	   "Show PCIX bridge info", NULL);
+	   "Show PCIX bridge info", "");
 
 #define TAISHAN_PCI_DEV_ID0 0x800
 #define TAISHAN_PCI_DEV_ID1 0x1000
@@ -222,7 +222,7 @@ int do_show_pcix_device_info(cmd_tbl_t * cmdtp, int flag, int argc,
 }
 
 U_BOOT_CMD(xdevinfo, 1, 1, do_show_pcix_device_info,
-	   "Show PCIX Device info", NULL);
+	   "Show PCIX Device info", "");
 
 extern void show_reset_reg(void);
 
@@ -233,4 +233,4 @@ int do_show_reset_reg_info(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 }
 
 U_BOOT_CMD(resetinfo, 1, 1, do_show_reset_reg_info,
-	   "Show Reset REG info", NULL);
+	   "Show Reset REG info", "");

board/amcc/taishan/update.c

@@ -74,5 +74,5 @@ int do_update_boot_eeprom(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 }
 
 U_BOOT_CMD(update_boot_eeprom, 1, 1, do_update_boot_eeprom,
-	   "update bootstrap eeprom content", NULL);
+	   "update bootstrap eeprom content", "");
 #endif

board/amcc/yucca/cmd_yucca.c

@@ -282,5 +282,5 @@ static int setBootStrapClock(cmd_tbl_t *cmdtp, int incrflag, int flag,
 U_BOOT_CMD(
 	evb440spe,	3,	1,	do_evb440spe,
 	"program the serial device strap",
-	"wrclk [prom0|prom1] - program the serial device strap\n"
+	"wrclk [prom0|prom1] - program the serial device strap"
 );

board/amirix/ap1000/ap1000.c

@@ -670,14 +670,14 @@ U_BOOT_CMD (temp, 6, 0, do_temp_sensor,
 	    "        - Set config options.\n"
 	    "\n"
 	    "All values can be decimal or hex (hex preceded with 0x).\n"
-	    "Only whole numbers are supported for external limits.\n");
+	    "Only whole numbers are supported for external limits.");
 
 #if 0
 U_BOOT_CMD (loadace, 2, 0, do_loadace,
 	    "load fpga configuration from System ACE compact flash",
 	    "N\n"
 	    "    - Load configuration N (0-7) from System ACE compact flash\n"
-	    "loadace\n" "    - loads default configuration\n");
+	    "loadace\n" "    - loads default configuration");
 #endif
 
 U_BOOT_CMD (swconfig, 2, 0, do_swconfigbyte,
@@ -685,19 +685,19 @@ U_BOOT_CMD (swconfig, 2, 0, do_swconfigbyte,
 	    "N [ADDRESS]\n"
 	    "    - set software configuration byte to N, optionally use ADDRESS as\n"
 	    "      location of buffer for flash copy\n"
-	    "swconfig\n" "    - display software configuration byte\n");
+	    "swconfig\n" "    - display software configuration byte");
 
 U_BOOT_CMD (pause, 2, 0, do_pause,
 	    "sleep processor until any key is pressed with poll time of N seconds",
 	    "N\n"
 	    "    - sleep processor until any key is pressed with poll time of N seconds\n"
 	    "pause\n"
-	    "    - sleep processor until any key is pressed with poll time of 1 second\n");
+	    "    - sleep processor until any key is pressed with poll time of 1 second");
 
 U_BOOT_CMD (swrecon, 1, 0, do_swreconfig,
 	    "trigger a board reconfigure to the software selected configuration",
 	    "\n"
-	    "    - trigger a board reconfigure to the software selected configuration\n");
+	    "    - trigger a board reconfigure to the software selected configuration");
 
 int board_eth_init(bd_t *bis)
 {

board/amirix/ap1000/powerspan.c

@@ -487,7 +487,7 @@ U_BOOT_CMD (eeprom, 4, 0, do_eeprom,
 	    "    - store contents of eeprom at address ADD\n"
 	    "eeprom p ADD\n"
 	    "    - put data stored at address ADD into the eeprom\n"
-	    "eeprom d\n" "    - return eeprom to default contents\n");
+	    "eeprom d\n" "    - return eeprom to default contents");
 
 unsigned int PowerSpanRead (unsigned int theOffset)
 {

board/barco/barco.c

@@ -307,19 +307,19 @@ int barcobcd_boot_image (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 U_BOOT_CMD (
 		try_working, 1, 1, barcobcd_boot_image,
 		"check flash value and boot the appropriate image",
-		"\n"
+		""
 	  );
 
 U_BOOT_CMD (
 		boot_working, 1, 1, barcobcd_boot_image,
 		"check flash value and boot the appropriate image",
-		"\n"
+		""
 	  );
 
 U_BOOT_CMD (
 		boot_default, 1, 1, barcobcd_boot_image,
 		"check flash value and boot the appropriate image",
-		"\n"
+		""
 	  );
 /*
  * We are not using serial communication, so just provide empty functions

board/bc3450/cmd_bc3450.c

@@ -198,7 +198,7 @@ U_BOOT_CMD (dip, 1, 1, cmd_dip,
 	    "\n"
 	    "     - prints the state of the dip switch and/or\n"
 	    "       external configuration inputs as hex value.\n"
-	    "     - \"Config 1\" is the LSB\n");
+	    "     - \"Config 1\" is the LSB");
 
 
 /*
@@ -229,7 +229,7 @@ static int cmd_buz (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 
 U_BOOT_CMD (buz, 2, 1, cmd_buz,
 	    "turns buzzer on/off",
-	    "\n" "buz <on/off>\n" "     - turns the buzzer on or off\n");
+	    "\n" "buz <on/off>\n" "     - turns the buzzer on or off");
 #endif /* CONFIG_BC3450_BUZZER */
 
 
@@ -326,14 +326,14 @@ U_BOOT_CMD (fp, 3, 1, cmd_fp,
 	    "\n"
 	    "fp bl <on/off>\n"
 	    "     - turns the CCFL backlight of the display on/off\n"
-	    "fp <on/off>\n" "     - turns the whole display on/off\n"
+	    "fp <on/off>\n" "     - turns the whole display on/off"
 #ifdef CONFIG_BC3450_CRT
+	    "\n"
 	    "fp crt <on/off>\n"
-	    "     - enables/disables the crt output (debug only)\n"
+	    "     - enables/disables the crt output (debug only)"
 #endif /* CONFIG_BC3450_CRT */
 	);
 
-
 /*
  * temp - DS1620 thermometer
  */
@@ -524,7 +524,7 @@ static int cmd_temp (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 
 U_BOOT_CMD (temp, 3, 1, cmd_temp,
 	    "print current temperature",
-	    "\n" "temp\n" "     - print current temperature\n");
+	    "\n" "temp\n" "     - print current temperature");
 
 #ifdef CONFIG_BC3450_CAN
 /*
@@ -823,5 +823,6 @@ U_BOOT_CMD (test, 2, 1, cmd_test, "unit test routines", "\n"
 #endif /* CONFIG_BC3450_CAN */
 	"test unit-off\n"
 	"     - turns off the BC3450 unit\n"
-	    "       WARNING: Unsaved environment variables will be lost!\n");
+	"       WARNING: Unsaved environment variables will be lost!"
+);
 #endif