payloads/external/iPXE: Add more Kconfig options

Add two new options:
* Disable the prompt "Press Ctrl+B for the iPXE command line..."
Add a boolean that disables the initial 2 second timeout.

* Include a script that is executed instead of showing a shell.
Allows to add a script that will be included into the iPXE ROM.

Tested on Lenovo T500 and PC Engines apu2.

Change-Id: Ie1083d8571d9d1f1c7c71659fb6ff0de2eecad0e
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/20782
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

payloads/external/Makefile.inc

@@ -229,7 +229,9 @@ endif
 ifeq ($(CONFIG_BUILD_IPXE),y)
 PXE_ROM_FILE:=payloads/external/iPXE/ipxe/ipxe.rom
 endif
-
+ifeq ($(CONFIG_PXE_ADD_SCRIPT),y)
+PXE_CONFIG_SCRIPT:=$(abspath $(patsubst "%",%,$(CONFIG_PXE_SCRIPT)))
+endif
 ifeq ($(CONFIG_CONSOLE_SERIAL)$(CONFIG_DRIVERS_UART_8250IO),yy)
 IPXE_UART=COM$(call int-add,$(CONFIG_UART_FOR_CONSOLE) 1)
 endif
@@ -244,7 +246,7 @@ cbfs-files-$(CONFIG_PXE_ROM)$(CONFIG_BUILD_IPXE) += pci$(CONFIG_PXE_ROM_ID).rom
 pci$(CONFIG_PXE_ROM_ID).rom-file := $(PXE_ROM_FILE)
 pci$(CONFIG_PXE_ROM_ID).rom-type := raw
 
-payloads/external/iPXE/ipxe/ipxe.rom ipxe: $(DOTCONFIG)
+payloads/external/iPXE/ipxe/ipxe.rom ipxe: $(DOTCONFIG) $(PXE_CONFIG_SCRIPT)
 	$(MAKE) -C payloads/external/iPXE all \
 	CROSS_COMPILE="$(CROSS_COMPILE_$(ARCH-ramstage-y))" \
 	PXE_ROM_PCI_ID=$(PXE_ROM_PCI_ID) \
@@ -253,6 +255,9 @@ payloads/external/iPXE/ipxe/ipxe.rom ipxe: $(DOTCONFIG)
 	CONSOLE_SERIAL=$(IPXE_SERIAL_CONSOLE) \
 	IPXE_UART=$(IPXE_UART) \
 	CONFIG_TTYS0_BAUD=$(CONFIG_TTYS0_BAUD) \
+	CONFIG_SCRIPT=$(PXE_CONFIG_SCRIPT) \
+	CONFIG_HAS_SCRIPT=$(CONFIG_PXE_ADD_SCRIPT) \
+	CONFIG_PXE_NO_PROMT=$(CONFIG_PXE_NO_PROMT) \
 	MFLAGS= MAKEFLAGS=
 
 # LinuxBoot

payloads/external/iPXE/Kconfig

@@ -87,5 +87,31 @@ config PXE_SERIAL_CONSOLE
 
 	  Unselect to let only SeaBIOS handle printing output.
 
+config PXE_NO_PROMT
+	bool "Do not show prompt to boot from PXE"
+	default n
+	depends on BUILD_IPXE
+	help
+	  Don't wait for the user to press Ctrl-B.
+	  The PXE still can be run as it shows up in SeaBIOS's payload list.
+
+config PXE_ADD_SCRIPT
+	bool "Embed an iPXE script for automated provisioning"
+	depends on BUILD_IPXE
+	default n
+	help
+	  Enable to embed a script that is run instead of an iPXE shell.
+
+config PXE_SCRIPT
+	string "Embedded iPXE script path and filename"
+	depends on PXE_ADD_SCRIPT
+	default ""
+	help
+	  Path to a script that is embedded into the iPXE binary.
+	  Example: startup.ipxe
+
+	  Uses the ipxe script instead showing the prompt:
+	  "Press Ctrl-B to start iPXE..."
+
 endmenu
 endif

payloads/external/iPXE/Makefile

@@ -54,15 +54,34 @@ ifeq ($(CONSOLE_SERIAL),yy)
 	sed 's|#define\s*COMCONSOLE.*|#define COMCONSOLE $(IPXE_UART)|' "$(project_dir)/src/config/serial.h" > "$(project_dir)/src/config/serial.h.tmp"
 	sed 's|#define\s*COMSPEED.*|#define COMSPEED $(CONFIG_TTYS0_BAUD)|'  "$(project_dir)/src/config/serial.h.tmp" > "$(project_dir)/src/config/serial.h"
 endif
+ifneq ($(filter y,$(CONFIG_HAS_SCRIPT) $(CONFIG_PXE_NO_PROMT)),)
+	cp "$(project_dir)/src/config/general.h" "$(project_dir)/src/config/general.h.cb"
+endif
+ifeq ($(CONFIG_HAS_SCRIPT),y)
+	sed 's|//#define\s*IMAGE_SCRIPT.*|#define IMAGE_SCRIPT|' "$(project_dir)/src/config/general.h" > "$(project_dir)/src/config/general.h.tmp"
+	mv "$(project_dir)/src/config/general.h.tmp" "$(project_dir)/src/config/general.h"
+endif
+ifeq ($(CONFIG_PXE_NO_PROMT),y)
+	sed 's|#define\s*BANNER_TIMEOUT.*|#define BANNER_TIMEOUT 0|' "$(project_dir)/src/config/general.h" > "$(project_dir)/src/config/general.h.tmp"
+	mv "$(project_dir)/src/config/general.h.tmp" "$(project_dir)/src/config/general.h"
+endif
 
-build: config
+build: config $(CONFIG_SCRIPT)
+ifeq ($(CONFIG_HAS_SCRIPT),y)
+	echo "    MAKE       $(project_name) $(TAG-y) EMBED=$(CONFIG_SCRIPT)"
+	$(MAKE) -C $(project_dir)/src bin/$(PXE_ROM_PCI_ID).rom EMBED=$(CONFIG_SCRIPT)
+else
 	echo "    MAKE       $(project_name) $(TAG-y)"
 	$(MAKE) -C $(project_dir)/src bin/$(PXE_ROM_PCI_ID).rom
+endif
 	cp $(project_dir)/src/bin/$(PXE_ROM_PCI_ID).rom $(project_dir)/ipxe.rom
 ifeq ($(CONSOLE_SERIAL),yy)
 	cp "$(project_dir)/src/config/console.h.cb" "$(project_dir)/src/config/console.h"
 	cp "$(project_dir)/src/config/serial.h.cb" "$(project_dir)/src/config/serial.h"
 endif
+ifneq ($(filter y,$(CONFIG_HAS_SCRIPT) $(CONFIG_PXE_NO_PROMT)),)
+	cp "$(project_dir)/src/config/general.h.cb" "$(project_dir)/src/config/general.h"
+endif
 
 clean:
 	test -d $(project_dir) && $(MAKE) -C $(project_dir)/src veryclean || exit 0