On my machine, it happens once in a while that the virtualised machine
boots too fast for the rootfs to be available at the time the kernel
tries to mount it.
For example, board/qemu/arm-vexpress/readme.txt suggested changing
"-smp 1" up to "-smp 4". But doing so here causes a kernel panic:
VFS: Cannot open root device "mmcblk0" or unknown-block(0,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
1f00 131072 mtdblock0
(driver?)
1f01 32768 mtdblock1
(driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(0,0)
So, add the oh-so-useful 'rootwait' option to all kernel command lines
for qemu defconfigs.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Joel Stanley <joel@jms.id.au>
Cc: Mark Corbin <mark.corbin@embecosm.com>
Cc: Matt Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
All linux configs are renamed to a version neutral filename
to avoid further renaming on kernel bumps.
Defconfig Kernel Qemu Network Status
--------------------------------------------------------------
aarch64_virt 4.16.7 2.12.0 YES OK
arm_versatile 4.16.7 2.12.0 YES OK
arm_versatile_nommu 4.16.7 2.12.0 YES OK (3)
arm_vexpress 4.16.7 2.12.0 YES OK
m68k_mcf5208 4.16.7 2.12.0 YES OK
m68k_q800 4.16.7 q800-v2.11.0 NO (2) OK
microblazebe 4.16.7 2.12.0 YES OK
microblazeel 4.16.7 2.12.0 YES OK
mips32r2el_malta 4.16.7 2.12.0 YES OK
mips32r2_malta 4.16.7 2.12.0 YES OK
mips32r6el_malta 4.16.7 2.12.0 YES OK
mips32r6_malta 4.16.7 2.12.0 YES OK
mips64el_malta 4.16.7 2.12.0 YES OK
mips64_malta 4.16.7 2.12.0 YES OK
mips64r6el_malta 4.16.7 2.12.0 YES OK
mips64r6_malta 4.16.7 2.12.0 YES OK
nios2-10m50 4.16.7 2.12.0 NO OK
or1k 4.16.7 2.12.0 NO OK
ppc_g3beige 4.16.7 2.12.0 YES OK
ppc_mpc8544ds 4.16.7 2.12.0 YES OK
ppc_virtex_ml507 4.16.7 2.12.0 NO OK
ppc64_pseries 4.16.7 2.12.0 YES OK
ppc64le_pseries 4.16.7 2.12.0 YES OK
ppc64_e5500 4.16.7 2.12.0 YES OK
sh4 4.16.7 2.12.0 YES OK
sh4eb 4.16.7 2.12.0 NO (1) OK
sparc_ss10 4.16.7 2.12.0 YES OK
sparc64_sun4u 4.16.7 2.12.0 YES OK
x86 4.16.7 2.12.0 YES OK
x86_64 4.16.7 2.12.0 YES OK
xtensa_lx60 4.16.7 2.12.0 YES OK
xtensa_lx60_nommu 4.16.7 2.12.0 YES OK
(1) - Probably an endian issue with 8139 emulation/driver
(2) - There's a network interface, but enabling it in qemu fails
(3) - Kernel patch required, switched to devicetree usage
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
In particular:
- Explicitly specify the CPU to be used, POWER8, which matches
qemu_ppc64le_pseries_defconfig
- Use hard disk emulation to access the root filesystem instead of an
initrd.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This allows the toolchain building machinery used by
https://toolchains.bootlin.com to automatically re-use this Qemu
command line.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
qemu-system-ppc64le doesn't necessarily exist: it isn't installed by
Qemu, and only created as a symlink to qemu-system-ppc64 by some
distributions (Ubuntu). Other distributions (Fedora) just have
qemu-system-ppc64.
But qemu-system-ppc64 is capable of running little-endian PPC64
systems, so use this one instead.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This is similar to the ppc64_pseries config, except we build for little
endian instead of big endian.
The default architecture is set to Power8 as this was the first fully
enabled LE machine.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
