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authorMathieu Othacehe <m.othacehe@gmail.com>2017-12-05 11:34:01 +0100
committerMathieu Othacehe <m.othacehe@gmail.com>2017-12-15 11:44:29 +0100
commitacf54bca225b63f5b06e335a55045421c47bbd09 (patch)
tree5b103e6bdc84afe5c290b585d0dfb83b0eb0e9c5 /gnu
parentdfb403b053eb0ea5e7c052855ba419e6a9968442 (diff)
downloadguix-acf54bca225b63f5b06e335a55045421c47bbd09.tar
guix-acf54bca225b63f5b06e335a55045421c47bbd09.tar.gz
vm: Adapt qemu command to ARM.
* gnu/build/vm.scm (load-in-linux-vm): New argument #:target-arm32. Use it to adapt command for qemu-system-arm. This implies to choose a machine ("virt"), use the correct console port "ttyAMA0", disable KVM use that is buggy on some ARM boards (Odroid XU4 for example) and use user mode network stack instead of NIC. Gather all those options in a new variable "arch-specific-flags". * gnu/system/vm.scm (expression->derivation-in-linux-vm): Pass to load-in-linux-vm "#:target-arm32?" argument.
Diffstat (limited to 'gnu')
-rw-r--r--gnu/build/vm.scm34
-rw-r--r--gnu/system/vm.scm4
2 files changed, 31 insertions, 7 deletions
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index ed84463677..8f8ca609f2 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -77,6 +77,7 @@
linux initrd
make-disk-image?
single-file-output?
+ target-arm32?
(disk-image-size (* 100 (expt 2 20)))
(disk-image-format "qcow2")
(references-graphs '()))
@@ -91,6 +92,31 @@ access it via /dev/hda.
REFERENCES-GRAPHS can specify a list of reference-graph files as produced by
the #:references-graphs parameter of 'derivation'."
+
+ (define arch-specific-flags
+ `(;; On ARM, a machine has to be specified. Use "virt" machine to avoid
+ ;; hardware limits imposed by other machines.
+ ,@(if target-arm32? '("-M" "virt") '())
+
+ ;; Only enable kvm if we see /dev/kvm exists. This allows users without
+ ;; hardware virtualization to still use these commands. KVM support is
+ ;; still buggy on some ARM32 boards. Do not use it even if available.
+ ,@(if (and (file-exists? "/dev/kvm")
+ (not target-arm32?))
+ '("-enable-kvm")
+ '())
+ "-append"
+ ;; The serial port name differs between emulated architectures/machines.
+ ,@(if target-arm32?
+ `(,(string-append "console=ttyAMA0 --load=" builder))
+ `(,(string-append "console=ttyS0 --load=" builder)))
+ ;; NIC is not supported on ARM "virt" machine, so use a user mode
+ ;; network stack instead.
+ ,@(if target-arm32?
+ '("-device" "virtio-net-pci,netdev=mynet"
+ "-netdev" "user,id=mynet")
+ '("-net" "nic,model=virtio"))))
+
(when make-disk-image?
(format #t "creating ~a image of ~,2f MiB...~%"
disk-image-format (/ disk-image-size (expt 2 20)))
@@ -113,7 +139,6 @@ the #:references-graphs parameter of 'derivation'."
(unless (zero?
(apply system* qemu "-nographic" "-no-reboot"
"-m" (number->string memory-size)
- "-net" "nic,model=virtio"
"-virtfs"
(string-append "local,id=store_dev,path="
(%store-directory)
@@ -132,12 +157,7 @@ the #:references-graphs parameter of 'derivation'."
",format=" disk-image-format
",id=myhd"))
'())
- ;; Only enable kvm if we see /dev/kvm exists.
- ;; This allows users without hardware virtualization to still
- ;; use these commands.
- (if (file-exists? "/dev/kvm")
- '("-enable-kvm")
- '()))))
+ arch-specific-flags)))
(error "qemu failed" qemu))
;; When MAKE-DISK-IMAGE? is true, the image is in OUTPUT already.
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
index d754ac76f0..b376337c8d 100644
--- a/gnu/system/vm.scm
+++ b/gnu/system/vm.scm
@@ -175,6 +175,10 @@ made available under the /xchg CIFS share."
#:memory-size #$memory-size
#:make-disk-image? #$make-disk-image?
#:single-file-output? #$single-file-output?
+ ;; FIXME: ‘target-arm32?’ may not operate on
+ ;; the right system/target values. Rewrite
+ ;; using ‘let-system’ when available.
+ #:target-arm32? #$(target-arm32?)
#:disk-image-format #$disk-image-format
#:disk-image-size size
#:references-graphs graphs)))))