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wic: add UEFI kernel as UEFI stub

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Linux kernel can be compiled as UEFI stub and loaded directly
with UEFI firmware without grub or other UEFI shell.

Tested with wic file:
bootloader  --ptable gpt --timeout=0  --append="rootwait"
part /boot --source bootimg-efi --sourceparams="loader=uefi-kernel" \
 --ondisk sda  --fstype=vfat --label bootfs \
  --active --align 1024 --use-uuid
part / --source rootfs --fstype=ext4 --label rootfs \
  --align 1024 --exclude-path boot/ --use-label

(From OE-Core rev: b18025fc8a2dad963b6f4b697e24455f2511b279)

Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Maxim Uvarov
2022-10-05 08:55:03 +03:00
committed by Richard Purdie
parent 5680ba2ca5
commit 5b0de8447e
1 changed files with 24 additions and 0 deletions
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24
scripts/lib/wic/plugins/source/bootimg-efi.py
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@@ -220,6 +220,8 @@ class BootimgEFIPlugin(SourcePlugin):
cls.do_configure_grubefi(hdddir, creator, cr_workdir, source_params)
elif source_params['loader'] == 'systemd-boot':
cls.do_configure_systemdboot(hdddir, creator, cr_workdir, source_params)
elif source_params['loader'] == 'uefi-kernel':
return
else:
raise WicError("unrecognized bootimg-efi loader: %s" % source_params['loader'])
except KeyError:
@@ -385,6 +387,28 @@ class BootimgEFIPlugin(SourcePlugin):
for mod in [x for x in os.listdir(kernel_dir) if x.startswith("systemd-")]:
cp_cmd = "cp %s/%s %s/EFI/BOOT/%s" % (kernel_dir, mod, hdddir, mod[8:])
exec_cmd(cp_cmd, True)
elif source_params['loader'] == 'uefi-kernel':
kernel = get_bitbake_var("KERNEL_IMAGETYPE")
if not kernel:
raise WicError("Empty KERNEL_IMAGETYPE %s\n" % target)
target = get_bitbake_var("TARGET_SYS")
if not target:
raise WicError("Unknown arch (TARGET_SYS) %s\n" % target)
if re.match("x86_64", target):
kernel_efi_image = "bootx64.efi"
elif re.match('i.86', target):
kernel_efi_image = "bootia32.efi"
elif re.match('aarch64', target):
kernel_efi_image = "bootaa64.efi"
elif re.match('arm', target):
kernel_efi_image = "bootarm.efi"
else:
raise WicError("UEFI stub kernel is incompatible with target %s" % target)
for mod in [x for x in os.listdir(kernel_dir) if x.startswith(kernel)]:
cp_cmd = "cp %s/%s %s/EFI/BOOT/%s" % (kernel_dir, mod, hdddir, kernel_efi_image)
exec_cmd(cp_cmd, True)
else:
raise WicError("unrecognized bootimg-efi loader: %s" %
source_params['loader'])