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runqemu: try and guess qemu-system binary when MACHINE isn't set 

Emulate some logic from the prior, shell based, version of runqemu
to try and infer the correct setting for MACHINE from the kernel
and rootfs filenames.

(From OE-Core rev: a5adabe1414061d6864c5913dd5e66a4527838f1)

Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Joshua Lock 2016-09-21 20:35:37 +01:00 committed by Richard Purdie
parent cd47b648af
commit c97912a17d
1 changed files with 36 additions and 0 deletions
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36
scripts/runqemu
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@ -846,8 +846,44 @@ class BaseConfig(object):
self.set('ROOTFS_OPTIONS', self.rootfs_options)
def guess_qb_system(self):
"""attempt to determine the appropriate qemu-system binary"""
mach = self.get('MACHINE')
if not mach:
search = '.*(qemux86-64|qemux86|qemuarm64|qemuarm|qemumips64|qemumips|qemuppc).*'
if self.rootfs:
match = re.match(search, self.rootfs)
if match:
mach = match.group(1)
elif self.kernel:
match = re.match(search, self.kernel)
if match:
mach = match.group(1)
if not mach:
return None
if mach == 'qemuarm':
qbsys = 'arm'
elif mach == 'qemuarm64':
qbsys = 'aarch64'
elif mach == 'qemux86':
qbsys = 'i386'
elif mach == 'qemux86-64':
qbsys = 'x86_64'
elif mach == 'qemuppc':
qbsys = 'ppc'
elif mach == 'qemumips':
qbsys = 'mips'
elif mach == 'qemumips64':
qbsys = 'mips64'
return 'qemu-system-%s' % qbsys
def setup_final(self):
qemu_system = self.get('QB_SYSTEM_NAME')
if not qemu_system:
qemu_system = self.guess_qb_system()
if not qemu_system:
raise Exception("Failed to boot, QB_SYSTEM_NAME is NULL!")