Add Kconfig options for Linux as payload

These allow to define a kernel image, initrd and command line.

Change-Id: I40155b812728a176b6d15871e1e6c96e4ad693c8
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/3893
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)

2 files changed, 45 insertions, 0 deletions

diff --git a/src/Kconfig b/src/Kconfig
index f714cb2de1..be2cb249c1 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -539,6 +539,16 @@ config PAYLOAD_ELF
 	  You will be able to specify the location and file name of the
 	  payload image later.
 
+config PAYLOAD_LINUX
+	bool "A Linux payload"
+	help
+	  Select this option if you have a Linux bzImage which coreboot
+	  should run as soon as the basic hardware initialization
+	  is completed.
+
+	  You will be able to specify the location and file name of the
+	  payload image later.
+
 config PAYLOAD_SEABIOS
 	bool "SeaBIOS"
 	depends on ARCH_X86
@@ -617,6 +627,13 @@ config PAYLOAD_FILE
 	  The path and filename of the ELF executable file to use as payload.
 
 config PAYLOAD_FILE
+	string "Linux path and filename"
+	depends on PAYLOAD_LINUX
+	default "bzImage"
+	help
+	  The path and filename of the bzImage kernel to use as payload.
+
+config PAYLOAD_FILE
 	depends on PAYLOAD_SEABIOS
 	default "$(obj)/seabios/out/bios.bin.elf"
 
@@ -640,6 +657,20 @@ config COMPRESSED_PAYLOAD_LZMA
 	  In order to reduce the size payloads take up in the ROM chip
 	  coreboot can compress them using the LZMA algorithm.
 
+config LINUX_COMMAND_LINE
+	string "Linux command line"
+	depends on PAYLOAD_LINUX
+	default ""
+	help
+	  A command line to add to the Linux kernel.
+
+config LINUX_INITRD
+	string "Linux initrd"
+	depends on PAYLOAD_LINUX
+	default ""
+	help
+	  An initrd image to add to the Linux kernel.
+
 endmenu
 
 menu "Debugging"
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index 5c286761f2..b3b82b998c 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -74,6 +74,16 @@ $(obj)/coreboot.pre1: $(CBFSTOOL)
 	mv $(obj)/coreboot.rom $@
 endif
 
+ifeq ($(CONFIG_PAYLOAD_LINUX),y)
+LINUX_ADDITIONAL_CONFIG:=
+ifneq ($(strip $(call strip_quotes,$(CONFIG_LINUX_COMMAND_LINE))),)
+  LINUX_ADDITIONAL_CONFIG+=-C $(CONFIG_LINUX_COMMAND_LINE)
+endif
+ifneq ($(strip $(call strip_quotes,$(CONFIG_LINUX_INITRD))),)
+  LINUX_ADDITIONAL_CONFIG+=-I $(CONFIG_LINUX_INITRD)
+endif
+endif
+
 $(obj)/coreboot.rom: $(obj)/coreboot.pre $(objcbfs)/coreboot_ram.elf $(CBFSTOOL) $(call strip_quotes,$(COREBOOT_ROM_DEPENDENCIES)) $$(INTERMEDIATE) $$(VBOOT_STUB_ELF)
 	@printf "    CBFS       $(subst $(obj)/,,$(@))\n"
 	cp $(obj)/coreboot.pre $@.tmp
@@ -85,6 +95,10 @@ ifeq ($(CONFIG_PAYLOAD_ELF),y)
 	@printf "    PAYLOAD    $(CONFIG_PAYLOAD_FILE) (compression: $(CBFS_PAYLOAD_COMPRESS_FLAG))\n"
 	$(CBFSTOOL) $@.tmp add-payload -f $(CONFIG_PAYLOAD_FILE) -n $(CONFIG_CBFS_PREFIX)/payload -c $(CBFS_PAYLOAD_COMPRESS_FLAG)
 endif
+ifeq ($(CONFIG_PAYLOAD_LINUX),y)
+	@printf "    PAYLOAD    $(CONFIG_PAYLOAD_FILE) (compression: $(CBFS_PAYLOAD_COMPRESS_FLAG))\n"
+	$(CBFSTOOL) $@.tmp add-payload -f $(CONFIG_PAYLOAD_FILE) -n $(CONFIG_CBFS_PREFIX)/payload -c $(CBFS_PAYLOAD_COMPRESS_FLAG) $(LINUX_ADDITIONAL_CONFIG)
+endif
 ifeq ($(CONFIG_PAYLOAD_SEABIOS),y)
 	@printf "    PAYLOAD    SeaBIOS (internal, compression: $(CBFS_PAYLOAD_COMPRESS_FLAG))\n"
 	$(CBFSTOOL) $@.tmp add-payload -f $(CONFIG_PAYLOAD_FILE) -n $(CONFIG_CBFS_PREFIX)/payload -c $(CBFS_PAYLOAD_COMPRESS_FLAG)