[Buildroot] [PATCHv3 0/6] Add some support for device tree kernels

[Maxime Ripard <maxime.ripard@free-electrons.com>]

Le 30/07/2012 10:33, Fabio Porcedda a ?crit :
> On Fri, Jul 27, 2012 at 8:59 PM, Maxime Ripard
> <maxime.ripard@free-electrons.com> wrote:
>> Le 27/07/2012 18:06, Fabio Porcedda a ?crit :
>>> thanks for the work, this feature it's very useful for me,
>>> i tried your patches and i tried to build a kernel for arm, but it
>>> failed to build it,
>>> this is the tail of the output log:
>>>
>>> cat /home/fabiopo/porting-pro3/ge863-pro3-linux-3.6/buildroot-dt/output/build/linux-3.5/arch/arm/boot/zImage
>>> /home/fabiopo/porting-pro3/ge863-pro3-linux-3.6/buildroot-dt/output/build/linux-3.5/arch/arm/boot/"usb_a9260".dtb
>>>> /home/fabiopo/porting-pro3/ge863-pro3-linux-3.6/buildroot-dt/output/build/linux-3.5/arch/arm/boot/zImage_dtb
>>> mv /home/fabiopo/porting-pro3/ge863-pro3-linux-3.6/buildroot-dt/output/build/linux-3.5/arch/arm/boot/zImage_dtb
>>> /home/fabiopo/porting-pro3/ge863-pro3-linux-3.6/buildroot-dt/output/build/linux-3.5/arch/arm/boot/zImage
>>> # We need to generate a new u-boot image that takes into
>>> # account the extra-size added by the device tree at the end
>>> # of the image. To do so, we first need to retrieve both load
>>> # address and entry point for the kernel from the already
>>> # generate uboot image before using mkimage -l.
>>> LOAD=` -l /home/fabiopo/porting-pro3/ge863-pro3-linux-3.6/buildroot-dt/output/build/linux-3.5/arch/arm/boot/uImage
>>> | sed -n 's/Load Address: \([0-9]*\)/\1/p'`; ENTRY=` -l
>>> /home/fabiopo/porting-pro3/ge863-pro3-linux-3.6/buildroot-dt/output/build/linux-3.5/arch/arm/boot/uImage
>>> | sed -n 's/Entry Point: \([0-9]*\)/\1/p'`;  -A arm -O linux -T kernel
>>> -C none -a ${LOAD} -e ${ENTRY} -n 'Linux Buildroot' -d
>>> /home/fabiopo/porting-pro3/ge863-pro3-linux-3.6/buildroot-dt/output/build/linux-3.5/arch/arm/boot/zImage
>>> /home/fabiopo/porting-pro3/ge863-pro3-linux-3.6/buildroot-dt/output/build/linux-3.5/arch/arm/boot/uImage
>>> /bin/bash: -l: command not found
>>> /bin/bash: -l: command not found
>>> /bin/bash: -A: command not found
>>> make: *** [/home/fabiopo/porting-pro3/ge863-pro3-linux-3.6/buildroot-dt/output/build/linux-3.5/.stamp_built]
>>> Error 127
>>>
>>>
>>> I've applied your patches on top of the commit
>>> fd08153b9d677d654add6c580b9ccc5c27d672e2,
>>>
>>> My defconfig is:
>>> BR2_arm=y
>>> BR2_arm926t=y
>>> BR2_TOOLCHAIN_EXTERNAL=y
>>> BR2_LINUX_KERNEL=y
>>> BR2_LINUX_KERNEL_CUSTOM_VERSION=y
>>> BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="3.5"
>>> BR2_LINUX_KERNEL_DEFCONFIG="at91_dt"
>>> BR2_LINUX_KERNEL_INTREE_DTS_NAME="usb_a9260"
>>> BR2_LINUX_KERNEL_APPENDED_UIMAGE=y
>>
>> I have seen no such bugs during my testing, but can you try with the
>> attached patch?
> 
> The problem it's on the patch "[PATCH 2/4] Add support for appended
> device tree blobs for arm ",
> please read my replay on the patch.
> 
>> I've only discovered this simplification of the code recently and didn't
>> take the time to submit a patch for it, I guess I have the opportunity
>> now :)
> 
> I tried your patch on top of the others, but the patch doesn't apply:
> 
> git apply < ~/Downloads/uimage-dtb.patch
> <stdin>:20: trailing whitespace.
> 	cat $(KERNEL_ARCH_PATH)/boot/$(KERNEL_DTS_NAME).dtb >>
> $(KERNEL_ARCH_PATH)/boot/zImage
> <stdin>:21: trailing whitespace.
> 	# We need to generate the uImage here after that so that the uImage is
> <stdin>:22: trailing whitespace.
> 	# generated with the right image size.
> <stdin>:23: trailing whitespace.
> 	$(TARGET_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) uImage
> <stdin>:29: trailing whitespace.
> 	cat $(KERNEL_ARCH_PATH)/boot/$(KERNEL_DTS_NAME).dtb >>
> $(KERNEL_ARCH_PATH)/boot/zImage
> error: patch failed: linux/linux.mk:198
> error: linux/linux.mk: patch does not apply

Hmmm, that's weird, it applies fine here on top of these patches.
Let me send another version of these patches then.

Maxime

-- 
Maxime Ripard, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com