[Buildroot] [git commit] Microblaze: build kernel with device tree
Peter Korsgaard
jacmet at sunsite.dk
Sun Mar 18 21:55:18 UTC 2012
commit: http://git.buildroot.net/buildroot/commit/?id=aaed42d15643e0cb64c96fa400a6097a19d19ef4
branch: http://git.buildroot.net/buildroot/commit/?id=refs/heads/master
This patch adds the options needed to build the SimpleImage containing
the device tree structure needed for the Microblaze architecture.
Handling Device Tree and SimpleImage will be handled in a general way
in the future.
I provide this patch to be able to build the system in the meantime.
Signed-off-by: Stephan Hoffmann <sho at relinux.de>
Signed-off-by: Peter Korsgaard <jacmet at sunsite.dk>
---
linux/Config.in | 8 ++++++++
linux/linux.mk | 16 ++++++++++++++++
2 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/linux/Config.in b/linux/Config.in
index b89fcdc..a7fa89f 100644
--- a/linux/Config.in
+++ b/linux/Config.in
@@ -120,6 +120,14 @@ config BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE
help
Path to the kernel configuration file
+config BR2_LINUX_KERNEL_DTS_FILE
+ string "Device Tree dts file location"
+ depends on BR2_microblaze
+ help
+ Path from where the dts file has to be copied
+ The final "custom target" name depends on the
+ dts file name:
+ <name>.dts --> simpleImage.<name>
#
# Binary format
#
diff --git a/linux/linux.mk b/linux/linux.mk
index 58cbe8e..c0334d2 100644
--- a/linux/linux.mk
+++ b/linux/linux.mk
@@ -117,6 +117,18 @@ endef
LINUX_POST_PATCH_HOOKS += LINUX_APPLY_PATCHES
+ifeq ($(KERNEL_ARCH),microblaze)
+# on microblaze, we always want mkimage
+LINUX_DEPENDENCIES+=host-uboot-tools
+
+define LINUX_COPY_DTS
+ if test -f "$(BR2_LINUX_KERNEL_DTS_FILE)" ; then \
+ cp $(BR2_LINUX_KERNEL_DTS_FILE) $(@D)/arch/microblaze/boot/dts ; \
+ else \
+ echo "Cannot copy dts file!" ; \
+ fi
+endef
+endif
ifeq ($(BR2_LINUX_KERNEL_USE_DEFCONFIG),y)
KERNEL_SOURCE_CONFIG = $(KERNEL_ARCH_PATH)/configs/$(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG))_defconfig
@@ -131,6 +143,8 @@ define LINUX_CONFIGURE_CMDS
$(if $(BR2_ARM_EABI),
$(call KCONFIG_ENABLE_OPT,CONFIG_AEABI,$(@D)/.config),
$(call KCONFIG_DISABLE_OPT,CONFIG_AEABI,$(@D)/.config))
+ $(if $(BR2_microblaze),
+ $(call LINUX_COPY_DTS))
# As the kernel gets compiled before root filesystems are
# built, we create a fake cpio file. It'll be
# replaced later by the real cpio archive, and the kernel will be
@@ -215,6 +229,8 @@ $(LINUX_DIR)/.stamp_initramfs_rebuilt: $(LINUX_DIR)/.stamp_target_installed $(LI
$(TARGET_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) $(LINUX_IMAGE_NAME)
# Copy the kernel image to its final destination
cp $(LINUX_IMAGE_PATH) $(BINARIES_DIR)
+ # If there is a .ub file copy it to the final destination
+ test -f $(LINUX_IMAGE_PATH).ub && cp $(LINUX_IMAGE_PATH).ub $(BINARIES_DIR)
$(Q)touch $@
# The initramfs building code must make sure this target gets called
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