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boot-qemu.py: Allow user to supply their own ramdisk #127

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Merged
nathanchance merged 1 commit into from
Nov 30, 2025
Merged

boot-qemu.py: Allow user to supply their own ramdisk #127

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15 changes: 15 additions & 0 deletions boot-qemu.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,7 @@ def __init__(self):
self.gdb = False
self.gdb_bin = ''
self.gh_json_file = None
self.initrd = None
self.interactive = False
self.kernel = None
self.kernel_dir = None
Expand Down Expand Up @@ -167,6 +168,8 @@ def _have_dev_kvm_access(self):
return os.access('/dev/kvm', os.R_OK | os.W_OK)

def _prepare_initrd(self):
if self.initrd:
return self.initrd
if not self._initrd_arch:
raise RuntimeError('No initrd architecture specified?')
return utils.prepare_initrd(self._initrd_arch,
Expand Down Expand Up @@ -821,6 +824,12 @@ def parse_arguments():
help=
'Use file for downloading rootfs images, instead of querying GitHub API directly'
)
parser.add_argument(
'-I',
'--initrd',
help=
'Initial ramdisk to use (default: Download ramdisk from ClangBuiltLinux/boot-utils releases)'
)
parser.add_argument(
'-k',
'--kernel-location',
Expand Down Expand Up @@ -919,6 +928,12 @@ def parse_arguments():
if args.gh_json_file:
runner.gh_json_file = Path(args.gh_json_file).resolve()

if args.initrd:
if not (initrd := Path(args.initrd).resolve()).exists():
raise FileNotFoundError(
f"Supplied initrd ('{initrd}') does not exist?")
runner.initrd = initrd

if args.memory:
runner.memory = args.memory

Expand Down