payloads/seabios: Add Hardware IRQ Kconfig

Certain boards require SeaBIOS' HARDWARE_IRQ option to be
deselected in order for the platform to boot. Add a Kconfig
to allow selection of HARDWARE_IRQ enablement, and write to
SeaBIOS' .config file in cases where it needs to be disabled.
Deselect the option for google/rambi variants so they boot
with boards defaults.

Test: build/boot google/clapper, verify board boots vs hanging
at boot menu prompt.

Change-Id: I23e9b30d2d1042c86bd10f134d6fe361edaf8cb2
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39869
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

payloads/external/SeaBIOS/Kconfig

@@ -51,6 +51,16 @@ config SEABIOS_THREAD_OPTIONROMS
 	  variations during option ROM code execution. It is not
 	  known if all option ROMs will behave properly with this option.
 
+config SEABIOS_HARDWARE_IRQ
+	prompt "Hardware Interrupts"
+	default y
+	bool
+	help
+	  Program and support hardware interrupts using the i8259
+	  programmable interrupt controller (PIC).  Deselected by
+	  boards which would otherwise hang at the boot menu (eg,
+	  google/rambi).
+
 config SEABIOS_VGA_COREBOOT
 	prompt "Include generated option rom that implements legacy VGA BIOS compatibility"
 	default y if !VENDOR_EMULATION

payloads/external/SeaBIOS/Makefile

@@ -72,6 +72,9 @@ endif
 ifneq ($(CONFIG_SEABIOS_DEBUG_LEVEL),-1)
 	echo "CONFIG_DEBUG_LEVEL=$(CONFIG_SEABIOS_DEBUG_LEVEL)" >> seabios/.config
 endif
+ifneq ($(CONFIG_SEABIOS_HARDWARE_IRQ),y)
+	echo "# CONFIG_HARDWARE_IRQ is not set" >> seabios/.config
+endif
 #	This shows how to force a previously set .config option *off*
 #	echo "# CONFIG_SMBIOS is not set" >> seabios/.config
 	$(MAKE) -C seabios olddefconfig OUT=out/

src/mainboard/google/rambi/Kconfig

@@ -77,6 +77,11 @@ config MAINBOARD_SMBIOS_MANUFACTURER
 	default "GOOGLE"
 
 config CONSOLE_SERIAL
+	bool
+	default n
+
+config SEABIOS_HARDWARE_IRQ
+	bool
 	default n
 
 endif # BOARD_GOOGLE_BASEBOARD_RAMBI