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Microblaze: build kernel with device tree

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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@relinux.de>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Stephan Hoffmann 2012-03-17 10:46:55 +01:00 committed by Peter Korsgaard
parent bb7788fd86
commit aaed42d156
2 changed files with 24 additions and 0 deletions
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8
linux/Config.in
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@ -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
#

16
linux/linux.mk
View File

@ -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