On Mon, Jul 9, 2012 at 12:42 AM, Michal Simek monstr@monstr.eu wrote:
On 07/04/2012 10:25 PM, Stephan Linz wrote:
Some architectures, for example Microblaze, doesn't need a splitted device tree because every Microblaze hw design is different. The individuell Microblaze device tree will be auto generated by FPGA design tools and could be used directly with dtc.
The auto generated dts for Microblaze can not processed by CPP. Unfortunately that is the default procedure in U-Boot to merge a splitted device tree (substitution of ARCH_CPU_DTS).
Microblaze will never use the ARCH_CPU_DTS substitution and we introduce the new board specific substitution variable BOARD_DTS that points into vendor/board/dts subdir with the file name of CONFIG_DEFAULT_DEVICE_TREE. The common dts file in vendor/dts subdir (defined by CONFIG_DEFAULT_DEVICE_TREE) contain a single include line that can processed by CPP:
/include/ BOARD_DTSSigned-off-by: Stephan Linzlinz@li-pro.net
dts/Makefile | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/dts/Makefile b/dts/Makefile index 914e479..b1f47a1 100644 --- a/dts/Makefile +++ b/dts/Makefile @@ -36,7 +36,8 @@ $(error Your architecture does not have device tree support enabled. \ Please define CONFIG_ARCH_DEVICE_TREE))
# We preprocess the device tree file provide a useful define -DTS_CPPFLAGS := -DARCH_CPU_DTS="$(SRCTREE)/**arch/$(ARCH)/dts/$(CONFIG_ **ARCH_DEVICE_TREE).dtsi" +DTS_CPPFLAGS := -DARCH_CPU_DTS="$(SRCTREE)/**arch/$(ARCH)/dts/$(CONFIG_ **ARCH_DEVICE_TREE).dtsi" \
-DBOARD_DTS=\"$(SRCTREE)/**board/$(VENDOR)/$(BOARD)/dts/$**(DEVICE_TREE).dts"
all: $(obj).depend $(LIB)
Ok. Have tested this. Simon can you give your ACK for this patch?
Weill I think for now it is reasonable.
Acked-by: Simon Glass sjg@chromium.org
Tested-by: Michal Simek monstr@monstr.eu
I think I can add this one to my microblaze custodian tree.
Thanks, Michal
-- Michal Simek, Ing. (M.Eng) w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/ Microblaze U-BOOT custodian