Change in coreboot[master]: Linuxboot: add option to parse initramfs

[Marcello Sylvester Bauer (Code Review)]

Marcello Sylvester Bauer has uploaded this change for review. ( https://review.coreboot.org/29448

Change subject: Linuxboot: add option to parse initramfs
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Linuxboot: add option to parse initramfs

Add the option to build the Linuxboot initramfs, otherwise choose the path to a
custom initramfs. Build a u-root initramfs remains default.

Change-Id: I648fb2e0383d20b0e4d50e416af637ea07d1efb4
Signed-off-by: Marcello Sylvester Bauer 
---
M payloads/external/LinuxBoot/Kconfig
M payloads/external/LinuxBoot/Makefile
2 files changed, 21 insertions(+), 6 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/48/29448/1

diff --git a/payloads/external/LinuxBoot/Kconfig b/payloads/external/LinuxBoot/Kconfig
index 58a67d6..30bd610 100644
--- a/payloads/external/LinuxBoot/Kconfig
+++ b/payloads/external/LinuxBoot/Kconfig
@@ -112,9 +112,16 @@
 config PAYLOAD_FILE
    default "payloads/external/LinuxBoot/linuxboot/kernel-image"

+config LINUXBOOT_BUILD_INITRAMFS
+	bool "build initramfs"
+	default y
+	help
+	  build Linuxboot initramfs
+
 choice
    prompt "Payload Mode"
    default LINUXBOOT_UROOT
+	depends on LINUXBOOT_BUILD_INITRAMFS

config LINUXBOOT_UROOT
    bool "u-root"
@@ -153,12 +160,20 @@
      Path to directory containing root structure for embedding into the
      initramfs.

-config PAYLOAD_USERSPACE
-	string "LinuxBoot initramfs"
-	default "payloads/external/LinuxBoot/linuxboot/initramfs.cpio.xz"
+endif
+
+config LINUXBOOT_CUSTOM_INITRAMFS
+	string "path to LinuxBoot initramfs"
+	default ""
+	depends on !LINUXBOOT_BUILD_INITRAMFS
    help
      The initramfs to use with the compiled kernel.
      Useful for debugging or custom initramfs.

-endif
+config PAYLOAD_USERSPACE
+	string
+	default "payloads/external/LinuxBoot/linuxboot/initramfs.cpio.xz" \
+		if LINUXBOOT_BUILD_INITRAMFS && LINUXBOOT_UROOT
+	default LINUXBOOT_CUSTOM_INITRAMFS if !LINUXBOOT_BUILD_INITRAMFS
+
 endif
diff --git a/payloads/external/LinuxBoot/Makefile b/payloads/external/LinuxBoot/Makefile
index 2390ba8..352c271 100644
--- a/payloads/external/LinuxBoot/Makefile
+++ b/payloads/external/LinuxBoot/Makefile
@@ -42,7 +42,7 @@

OBJCOPY:=$(LINUXBOOT_COMPILE)objcopy

-all: payload
+all: linuxboot

toolchain:
    if [[ ! -x "$(LINUXBOOT_COMPILE)gcc" ]]; then \
@@ -104,7 +104,7 @@
    echo "Building without u-root support"
 endif

-payload: $(project_dir)/kernel-image $(PWD)/$(CONFIG_PAYLOAD_USERSPACE)
+linuxboot: $(project_dir)/kernel-image $(PWD)/$(CONFIG_PAYLOAD_USERSPACE)

clean:
    if [ -d "$(kernel_dir)" ]; then rm -rf $(kernel_dir); fi