[yocto] linux-xilinx: How to download a ramdisk image and copy it to arch/powerpc/boot folder

[Elvis Dowson]

Hi,
          Would you be able to guide me, on how I can accomplish

a. trying to download a pre-built ramdisk image, prior to building the linux kernel? e.g. should I create a new ramdisk-xilinx.bb recipe to separately download it. 

If so, how do I get to stage it so that it downloads it, as soon, as the kernel sources have been unpacked in the work directory, .. and then copy the ramdisk.image.gz file over to the arch/powerpc/boot folder? 

b. which variables should I use to reference the kernel source work folder to perform the copy & which task should I use to perform the copy ?

Best regards,

Elvis Dowson


On Jul 14, 2012, at 12:19 AM, Elvis Dowson wrote:

> Hi,
>      I'm trying to create a linux-xilinx-2.6.38 recipe, that will download a ramdisk image from http://wiki.xilinx.com/local--files/powerpc-linux/ramdisk.image.gz
> and copy it to the arch/powerpc/boot folder.
> 
> How can I modify the following recipe to execute these commands?
> 
> inherit kernel xilinx-kernel xilinx-utils
> require recipes-kernel/linux/linux-xilinx.inc
> 
> DEFAULT_PREFERENCE = "1"
> 
> KBRANCH = "master"
> 
> LINUX_VERSION ?= "2.6.38"
> SRCREV_pn-${PN} = "c965eb91f22d1ca04b141957bccd1c02abc5c6f7"
> KTAG_virtex5 = "xilinx_v2.6.38"
> 
> PR = "r00"
> PV = "${LINUX_VERSION}"
> 
> SRC_URI = "git://git.xilinx.com/linux-xlnx.git;protocol=git;tag=${KTAG} \
>            file://0001-virtex-ml507-Update-device-tree-to-version-generated-by-Xilinx-EDK-13.1.patch \
>            file://0002-Makefile-Disable-warnings-being-treated-as-errors.patch \
>            file://defconfig"
> 
> XILINX_BOARD ?= "${@find_board(bb.data.getVar('XILINX_BSP_PATH', d, 1), d)}"
> KERNEL_DEVICETREE = "${@device_tree(bb.data.getVar('TARGET_ARCH', d, 1), d)}"
> KERNEL_DEVICETREE_microblazeel = "${@device_tree(bb.data.getVar('TARGET_CPU', d, 1), d)}"
> 
> #KERNEL_DEVICETREE = "virtex440-ml507.dts"
> 
> COMPATIBLE_MACHINE = "(virtex4|virtex5|virtex5mb|spartan6-sp605|spartan6-lx9mb)"
> 
> Best regards,
> 
> Elvis
> 
> 

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