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| author | Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> | 2014-02-14 11:32:38 +0530 |
|---|---|---|
| committer | Alexey Kardashevskiy <aik@ozlabs.ru> | 2014-03-04 12:52:03 +1100 |
| commit | 5ea509fd126b7e51fb32ac46c880b86817c8d7a1 (patch) | |
| tree | be6debcbe3f9ec8819680d10b397419283bcb8ec | |
| parent | ae98d1464cdb6ca645cb7d62d44ed7df106a0d3f (diff) | |
| download | SLOF-5ea509fd126b7e51fb32ac46c880b86817c8d7a1.zip SLOF-5ea509fd126b7e51fb32ac46c880b86817c8d7a1.tar.gz SLOF-5ea509fd126b7e51fb32ac46c880b86817c8d7a1.tar.bz2 | |
Introduce dummy console device
Qemu can create console-less machine, aka no output device. And there
are dependencies in the guest which expects a valid output device. Add
this dummy device that gobbles up all the output send, and keeps the
guest happy.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
| -rw-r--r-- | board-qemu/slof/Makefile | 1 | ||||
| -rw-r--r-- | board-qemu/slof/OF.fs | 8 | ||||
| -rw-r--r-- | board-qemu/slof/dev-null.fs | 35 |
3 files changed, 43 insertions, 1 deletions
diff --git a/board-qemu/slof/Makefile b/board-qemu/slof/Makefile index 43db4aa..6a9fa17 100644 --- a/board-qemu/slof/Makefile +++ b/board-qemu/slof/Makefile @@ -76,6 +76,7 @@ VIO_FFS_FILES = \ $(SLOFBRDDIR)/virtio-net.fs \ $(SLOFBRDDIR)/virtio-block.fs \ $(SLOFBRDDIR)/virtio-fs.fs \ + $(SLOFBRDDIR)/dev-null.fs \ $(SLOFBRDDIR)/virtio-scsi.fs # Files that should go into the ROM fs (and so have to be listed in OF.ffs): diff --git a/board-qemu/slof/OF.fs b/board-qemu/slof/OF.fs index 061df66..66af237 100644 --- a/board-qemu/slof/OF.fs +++ b/board-qemu/slof/OF.fs @@ -226,7 +226,13 @@ romfs-base 400000 0 ' claim CATCH IF ." claim failed!" cr 2drop THEN drop ." using hvterm" cr " hvterm" io ELSE - ." and no default found" cr + " /openprom" find-node ?dup IF + set-node + ." and no default found, creating dev-null" cr + " dev-null.fs" included + " devnull-console" io + 0 set-node + THEN THEN THEN THEN diff --git a/board-qemu/slof/dev-null.fs b/board-qemu/slof/dev-null.fs new file mode 100644 index 0000000..d0ffad6 --- /dev/null +++ b/board-qemu/slof/dev-null.fs @@ -0,0 +1,35 @@ +\ Introduce a dummy console that will eat away all chars and make all +\ the components dependent on stdout happy. + +new-device +" devnull-console" device-name + +: open true ; +: close ; + +: write ( adr len -- actual ) + nip +; + +: read ( adr len -- actual ) + nip +; + +: setup-alias + " devnull-console" find-alias 0= IF + " devnull-console" get-node node>path set-alias + ELSE + drop + THEN +; + +: dummy-term-emit drop ; +: dummy-term-key 0 ; +: dummy-term-key? FALSE ; + +' dummy-term-emit to emit +' dummy-term-key to key +' dummy-term-key? to key? + +setup-alias +finish-device |