Various Kconfig fixes and improvements:

- Add helps texts to multiple user-visible Kconfig options.

 - Improve some menu and option names.

 - PAYLOAD_NONE should come before PAYLOAD_ELF, so that you scroll down
   (instead of up) when changing "no payload" to "ELF payload" (more
   intuitive, IMHO).

 - s/cbfs/cbfstool/.

 - Add some TODO items where needed.

 - Put GDB_STUB in a "Debugging" menu, no options should be top-level.
   There'll be more debug options later, I'm pretty sure.

 - Start converting help texts which are not user-visible to #-comments.

 - Re-order some options for more intuitive menus.

 - Set ARCH_X86 and ARCH_POWERPC to "default n", each boards selects them.

 - "Maximum reboot count" should proabably not be user-selectable, or at
   most if CONFIG_EXPERT (yet to be added) is enabled. It does definately
   not need its own "Misc options" menu.

 - Set PCI_ROM_RUN and VGA_ROM_RUN to "default y", most users will want to
   run option ROMs.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4734 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/console/Kconfig

@@ -1,53 +1,96 @@
 menu "Console options"
 
+# TODO: Rename to SERIAL_CONSOLE once Kconfig transition is complete.
 config CONSOLE_SERIAL8250
-	#TODO Rename to SERIAL_CONSOLE once Kconfig transition is complete.
-	bool "See output on the serial port console"
+	bool "Enable serial port console output"
 	default y
+	help
+	  Send coreboot debug output to a serial port console.
 
-config SERIAL_POST
-	bool "See POST output on the serial port console"
-	default n
-
+# TODO: COM1, COM2 etc.
 config TTYS0_BASE
 	hex "I/O base for the serial port"
 	depends on CONSOLE_SERIAL8250
 	default 0x3f8
 
 config SERIAL_SET_SPEED
-	bool "Override the serial console BAUD rate"
+	bool "Override the serial port BAUD rate"
 	default y
 	depends on CONSOLE_SERIAL8250
 
 config TTYS0_BAUD
-	int "Serial console BAUD rate"
+	int "Serial port BAUD rate"
 	depends on SERIAL_SET_SPEED
 	default 115200
 
+# TODO: Allow user-friendly selection of settings other than 8n1.
 config TTYS0_LCS
 	int
 	default 3
 	depends on CONSOLE_SERIAL8250
 
-config USBDEBUG_DIRECT
-	bool "USB debug dongle support. Not supported on all chipsets."
+config SERIAL_POST
+	bool "Enable POST output on the serial port console"
+	depends on CONSOLE_SERIAL8250
 	default n
-	# TODO: FIX DEPENDENCY HERE
+	help
+	  If enabled, coreboot will additionally print POST codes (which are
+	  usually displayed using a so-called "POST card" ISA/PCI/PCI-E
+	  device) on the serial console.
+
+# TODO: FIX DEPENDENCY HERE
+config USBDEBUG_DIRECT
+	bool "USB 2.0 EHCI debug dongle support"
+	default n
+	help
+	  This option allows you to use a so-called USB EHCI Debug device
+	  to retrieve the coreboot debug messages (instead, or in addition
+	  to, a serial port).
+
+	  This feature is NOT supported on all chipsets in coreboot!
+
+	  It also requires a USB2 controller which supports the EHCI
+	  Debug Port capability. Controllers which are known to work:
+	
+	    * 10b9:5239 ALi Corporation USB 2.0 (USB PCI card)
+	    * 8086:24cd Intel ICH4/ICH4-M
+	    * 8086:24dd Intel ICH5
+	    * 8086:265c Intel ICH6
+	    * 8086:268c Intel 631xESB/632xESB/3100
+	    * 8086:27cc Intel ICH7
+	    * 8086:2836 Intel ICH8
+	    * 8086:283a Intel ICH8
+	    * 8086:293a Intel ICH9
+	    * 10de:0088 NVIDIA MCP2A
+	    * 10de:005b NVIDIA CK804
+	    * 10de:026e NVIDIA MCP51
+	    * 10de:036d NVIDIA MCP55
+	    * 10de:03f2 NVIDIA MCP61
+	    * 1002:4386 ATI/AMD SB600
+	    * 1106:3104 VIA VX800
+
+	  See http://www.coreboot.org/EHCI_Debug_Port for an up-to-date list.
 
 config CONSOLE_VGA
-	bool "Use VGA console, once initialized."
+	bool "Use VGA console once initialized"
 	default n
 
+# TODO: Deps?
+# TODO: Improve description.
 config CONSOLE_VGA_ONBOARD_AT_FIRST
-	bool "Use onboard VGA as primary"
+	bool "Use onboard VGA as primary video device"
 	default n
 	help
 	  If not selected, the last adapter found will be used.
 
+# TODO: User-friendly "choice" selection.
+# TODO: Add help text.
 config MAXIMUM_CONSOLE_LOGLEVEL
 	int "Maximum console loglevel"
 	default 9
 
+# TODO: User-friendly "choice" selection.
+# TODO: Add help text.
 config DEFAULT_CONSOLE_LOGLEVEL
 	int "Default console loglevel"
 	default 9