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# Use "select HAVE_USBDEBUG" on southbridges which have Debug Port code.
config HAVE_USBDEBUG
bool
default y if HAVE_USBDEBUG_OPTIONS
default n
# Use "select HAVE_USBDEBUG_OPTIONS" on southbridges with multiple
# EHCI controllers or multiple ports with Debug Port capability
config HAVE_USBDEBUG_OPTIONS
def_bool n
config USBDEBUG
bool "USB 2.0 EHCI debug dongle support"
default n
depends on HAVE_USBDEBUG
help
This option allows you to use a so-called USB EHCI Debug device
(such as the Ajays NET20DC, AMIDebug RX, or a system using the
Linux "EHCI Debug Device gadget" driver found in recent kernel)
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.
See http://www.coreboot.org/EHCI_Debug_Port for an up-to-date list
of supported controllers.
If unsure, say N.
if USBDEBUG
config USBDEBUG_IN_ROMSTAGE
bool "Enable early (pre-RAM) usbdebug"
default y
depends on EARLY_CBMEM_INIT && EARLY_CONSOLE
help
Configuring USB controllers in system-agent binary may cause
problems to usbdebug. Disabling this option delays usbdebug to
be setup on entry to ramstage.
If unsure, say Y.
config USBDEBUG_HCD_INDEX
int
default 0
prompt "Index for EHCI controller to use with usbdebug" if HAVE_USBDEBUG_OPTIONS
help
Some boards have multiple EHCI controllers with possibly only
one having the Debug Port capability on an external USB port.
Mapping of this index to PCI device functions is southbridge
specific and mainboard level Kconfig should already provide
a working default value here.
config USBDEBUG_DEFAULT_PORT
int
default 0
prompt "Default USB port to use as Debug Port" if HAVE_USBDEBUG_OPTIONS
help
Selects which physical USB port usbdebug dongle is connected to.
Setting of 0 means to scan possible ports starting from 1.
Intel platforms have hardwired the debug port location and this
setting makes no difference there.
Hence, if you select the correct port here, you can speed up
your boot time. Which USB port number refers to which actual
port on your mainboard (potentially also USB pin headers on
your mainboard) is highly board-specific, and you'll likely
have to find out by trial-and-error.
choice
prompt "Type of dongle"
default USBDEBUG_DONGLE_STD
config USBDEBUG_DONGLE_STD
bool "Net20DC or compatible"
config USBDEBUG_DONGLE_BEAGLEBONE
bool "BeagleBone"
help
Use this to configure the USB hub on BeagleBone board.
endchoice
config USBDEBUG_OPTIONAL_HUB_PORT
int
default 2 if USBDEBUG_DONGLE_BEAGLEBONE
default 0
endif # USBDEBUG
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