From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55070) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dUag6-0004rV-J4 for qemu-devel@nongnu.org; Mon, 10 Jul 2017 11:32:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dUag2-0002RY-K3 for qemu-devel@nongnu.org; Mon, 10 Jul 2017 11:32:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40412) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dUag2-0002Qw-BV for qemu-devel@nongnu.org; Mon, 10 Jul 2017 11:32:46 -0400 From: Thomas Huth Date: Mon, 10 Jul 2017 17:32:30 +0200 Message-Id: <1499700760-4777-1-git-send-email-thuth@redhat.com> Subject: [Qemu-devel] [PATCH v3 00/10] Implement network booting directly into the s390-ccw BIOS List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, Christian Borntraeger , Cornelia Huck Cc: Alexander Graf , Farhan Ali , David Hildenbrand , Viktor Mihajlovski , Alexey Kardashevskiy It's already possible to do a network boot of an s390x guest with an external netboot image based on a Linux installation, but it would be much more convenient if the s390-ccw firmware supported network booting right out of the box, without the need to assemble such an external image first. This patch series now introduces a s390-netboot.img that can be used for network booting via DHCP and TFTP by re-using the networking stack from the SLOF firmware (see https://github.com/aik/SLOF/ for details), and adds a driver for virtio-net-ccw devices. The code can only be built if the roms/SLOF submodule has been checked out (there is a sanity check for this in the Makefile). Once it has been built, you can download a combined kernel + initrd image via TFTP by starting QEMU for example with: qemu-system-s390x ... -device virtio-net,netdev=n1,bootindex=1 \ -netdev user,id=n1,tftp=/path/to/tftp,bootfile=kernel.img Note that this version does not support downloading via config files (i.e. pxelinux config files or .INS config files) yet. This will be added later. v3: - Adressed the review feedback from v2 - The last remaining SLOF patch has now been merged (big thanks to Alexey!), so not sending this as RFC anymore - it is ready now for integration, I think. v2: - Put the network boot loader into a separate s390-netboot.img binary instead of linking it directly into the s390-ccw firmware. - Use the SLOF sources from the roms/SLOF/ submodule instead of copying them into the pc-bios/s390-ccw folder - Removed the .INS config file loading code for now - only support combined kernel + initrd images in this initial implementation. Thomas Huth (10): pc-bios/s390-ccw: Move libc functions to separate header pc-bios/s390-ccw: Move ebc2asc to sclp.c pc-bios/s390-ccw: Move virtio-block related functions into a separate file pc-bios/s390-ccw: Add a write() function for stdio pc-bios/s390-ccw: Move byteswap functions to a separate header pc-bios/s390-ccw: Add code for virtio feature negotiation roms/SLOF: Update submodule to latest status pc-bios/s390-ccw: Add core files for the network bootloading program pc-bios/s390-ccw: Add virtio-net driver code pc-bios/s390-ccw: Link libnet into the netboot image and do the TFTP load pc-bios/s390-ccw/Makefile | 13 +- pc-bios/s390-ccw/bootmap.c | 2 + pc-bios/s390-ccw/bootmap.h | 26 --- pc-bios/s390-ccw/bswap.h | 25 +++ pc-bios/s390-ccw/libc.h | 45 +++++ pc-bios/s390-ccw/main.c | 14 +- pc-bios/s390-ccw/netboot.mak | 51 ++++++ pc-bios/s390-ccw/netmain.c | 365 +++++++++++++++++++++++++++++++++++++++ pc-bios/s390-ccw/s390-ccw.h | 33 +--- pc-bios/s390-ccw/sclp.c | 37 ++-- pc-bios/s390-ccw/virtio-blkdev.c | 297 +++++++++++++++++++++++++++++++ pc-bios/s390-ccw/virtio-net.c | 133 ++++++++++++++ pc-bios/s390-ccw/virtio-scsi.c | 1 + pc-bios/s390-ccw/virtio.c | 306 ++++---------------------------- pc-bios/s390-ccw/virtio.h | 18 +- roms/SLOF | 2 +- 16 files changed, 1007 insertions(+), 361 deletions(-) create mode 100644 pc-bios/s390-ccw/bswap.h create mode 100644 pc-bios/s390-ccw/libc.h create mode 100644 pc-bios/s390-ccw/netboot.mak create mode 100644 pc-bios/s390-ccw/netmain.c create mode 100644 pc-bios/s390-ccw/virtio-blkdev.c create mode 100644 pc-bios/s390-ccw/virtio-net.c -- 1.8.3.1