With these patches, I made a fitImage that booted on the mini-zed. It
would be nice to include a note on how to enable this. I took at few
stabs at it and ended up with
PREFERRED_PROVIDER_virtual/dtb = "devicetree"
in he machine file to get the code to trigger.
Philip
On 02/14/2019 07:56 PM, Manjukumar Matha wrote:
> Currently kernel-fitimage gets the dtb from KERNEL_DEVICETREE, however
> there are instances when the DTB file can be generated using other
> recipes, provide a way to include the DTB instead of inkernel device
> tree.
>
> Add support for external device tree during the creation of fitimage.
> If virtual/dtb is set then use the path provided in
> EXTERNAL_KERNEL_DEVICETREE else use KERNEL_DEVICETREE during fitimage
> process
>
> Signed-off-by: Manjukumar Matha <manjukumar.harthikote-ma...@xilinx.com>
> ---
> meta/classes/kernel-fitimage.bbclass | 20 +++++++++++++++++++-
> 1 file changed, 19 insertions(+), 1 deletion(-)
>
> diff --git a/meta/classes/kernel-fitimage.bbclass
> b/meta/classes/kernel-fitimage.bbclass
> index 8ebd3dd..3adb1c9 100644
> --- a/meta/classes/kernel-fitimage.bbclass
> +++ b/meta/classes/kernel-fitimage.bbclass
> @@ -30,6 +30,13 @@ python __anonymous () {
> if image:
> d.appendVarFlag('do_assemble_fitimage_initramfs', 'depends', '
> ${INITRAMFS_IMAGE}:do_image_complete')
>
> + #check if there are any dtb providers
> + providerdtb = d.getVar("PREFERRED_PROVIDER_virtual/dtb")
> + if providerdtb:
> + d.appendVarFlag('do_assemble_fitimage', 'depends', '
> virtual/dtb:do_populate_sysroot')
> + d.appendVarFlag('do_assemble_fitimage_initramfs', 'depends', '
> virtual/dtb:do_populate_sysroot')
> + d.setVar('EXTERNAL_KERNEL_DEVICETREE',
> "${RECIPE_SYSROOT}/boot/devicetree")
> +
> # Verified boot will sign the fitImage and append the public key to
> # U-Boot dtb. We ensure the U-Boot dtb is deployed before assembling
> # the fitImage:
> @@ -373,7 +380,8 @@ fitimage_assemble() {
> #
> # Step 2: Prepare a DTB image section
> #
> - if [ -n "${KERNEL_DEVICETREE}" ]; then
> +
> + if [ -z "${EXTERNAL_KERNEL_DEVICETREE}" ] && [ -n
> "${KERNEL_DEVICETREE}" ]; then
> dtbcount=1
> for DTB in ${KERNEL_DEVICETREE}; do
> if echo ${DTB} | grep -q '/dts/'; then
> @@ -391,6 +399,16 @@ fitimage_assemble() {
> done
> fi
>
> + if [ -n "${EXTERNAL_KERNEL_DEVICETREE}" ]; then
> + dtbcount=1
> + for DTBFILE in ${EXTERNAL_KERNEL_DEVICETREE}/*.dtb; do
> + DTB=`basename ${DTBFILE}`
> + DTB=$(echo "${DTB}" | tr '/' '_')
> + DTBS="${DTBS} ${DTB}"
> + fitimage_emit_section_dtb ${1} ${DTB} ${DTBFILE}
> + done
> + fi
> +
> #
> # Step 3: Prepare a setup section. (For x86)
> #
>
--
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