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kernel-fitimage.bbclass: remove it

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The integration of the FIT image-related build steps into the kernel
recipe has proven to be not very good. The new implementation with
kernel-fit-image.bbclass fixes some design issues:

* sstate does not work well when a fitImage contains an initramfs. The
  kernel is rebuilt from scratch if the build runs from an empty TMPDIR.
* A fitImage kernel is not available as a package, but all other kernel
  image types are.
* The task dependencies in the kernel are very complex and difficult to
  debug if something goes wrong. As a separate, downstream recipe, this
  is now much easier.

The long storry about this issue is here:
[YOCTO #12912]

(From OE-Core rev: deb6bc3bea30dadabdb580a7a58a3b2e277af400)

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Adrian Freihofer
2025-06-03 10:23:31 +02:00
committed by Richard Purdie
parent 18861ef0eb
commit 1d8c78c8cd
2 changed files with 0 additions and 334 deletions
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45
meta/classes-recipe/kernel-uboot.bbclass
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@@ -57,48 +57,3 @@ uboot_prep_kimage() {
printf "$linux_comp" > "$output_dir/linux_comp"
}
def uboot_prep_kimage_py(d):
import subprocess
arch = d.getVar('ARCH')
initramfs_image_bundle = d.getVar('INITRAMFS_IMAGE_BUNDLE')
fit_kernel_comp_alg = d.getVar('FIT_KERNEL_COMP_ALG') or 'gzip'
fit_kernel_comp_alg_extension = d.getVar('FIT_KERNEL_COMP_ALG_EXTENSION') or '.gz'
kernel_objcopy = d.getVar('KERNEL_OBJCOPY')
vmlinux_path = ""
linux_suffix = ""
linux_comp = "none"
if os.path.exists(f'arch/{arch}/boot/compressed/vmlinux'):
vmlinux_path = f'arch/{arch}/boot/compressed/vmlinux'
elif os.path.exists(f'arch/{arch}/boot/vmlinuz.bin'):
if os.path.exists('linux.bin'):
os.remove('linux.bin')
os.link(f'arch/{arch}/boot/vmlinuz.bin', 'linux.bin')
else:
vmlinux_path = 'vmlinux'
# Use vmlinux.initramfs for linux.bin when INITRAMFS_IMAGE_BUNDLE set
# As per the implementation in kernel.bbclass.
# See do_bundle_initramfs function
if initramfs_image_bundle == '1' and os.path.exists('vmlinux.initramfs'):
vmlinux_path = 'vmlinux.initramfs'
linux_suffix = fit_kernel_comp_alg_extension
linux_comp = fit_kernel_comp_alg
if vmlinux_path:
subprocess.run([kernel_objcopy.strip(), '-O', 'binary', '-R', '.note', '-R', '.comment', '-S', os.path.abspath(vmlinux_path), 'linux.bin'], check=True)
# if ret.returncode != 0:
# bb.fatal(f"Error: stderr: {ret.stderr.decode('utf-8')} stdout: {ret.stdout.decode('utf-8')}, vmlinux_path: {os.path.abspath(vmlinux_path)}, pwd: {os.getcwd()}, args: {ret.args}")
if linux_comp != "none":
if linux_comp == "gzip":
subprocess.run(['gzip', '-9', 'linux.bin'], check=True)
elif linux_comp == "lzo":
subprocess.run(['lzop', '-9', 'linux.bin'], check=True)
elif linux_comp == "lzma":
subprocess.run(['xz', '--format=lzma', '-f', '-6', 'linux.bin'], check=True)
os.rename(f'linux.bin{linux_suffix}', 'linux.bin')
return linux_comp