Some patches to improve the network boot experience on s390x:
First patch is just a minor code refactoring which should not have
any visible impact, but makes the following patches easier.
Patch 2 and 3 add support for loading kernels via configuration files,
pxelinux-style and .INS-file style. This way you don't have to manually
glue your ramdisk to your kernel anymore, so this should be quite a
relieve for all users who want to boot Linux via the network.
The last patch makes sure that we leave the machine in a sane state
before jumping into the Linux kernel - i.e. the netboot firmware now
resets the machine with diag308, too, just like the main s390-ccw
is doing it already.
v2:
- Replaced the patch to shut down virtio-net with the diag308 patch
- Slightly changed the logic that probes for pxelinux config files:
The user can now supply a base folder where config files reside
(the DHCP bootfile name then must end with a slash), and the
firmware will then only look in that folder for config files
instead of always probing the "pxelinux.cfg" folder. This way
we avoid a potential clash with x86 pxelinux.cfg files.
- Some clean-ups here and there.
Thomas Huth (4):
pc-bios/s390-ccw/net: Split up net_load() into init, load and uninit
parts
pc-bios/s390-ccw/net: Add support for pxelinux-style config files
pc-bios/s390-ccw/net: Add support for .INS config files
pc-bios/s390-ccw/net: Use diag308 to reset machine before jumping to
the OS
pc-bios/s390-ccw/Makefile | 4 +-
pc-bios/s390-ccw/bootmap.c | 63 +-------
pc-bios/s390-ccw/bootmap.h | 4 -
pc-bios/s390-ccw/jump2ipl.c | 81 ++++++++++
pc-bios/s390-ccw/netboot.mak | 8 +-
pc-bios/s390-ccw/netmain.c | 344 +++++++++++++++++++++++++++++++++++++++----
pc-bios/s390-ccw/s390-ccw.h | 4 +
7 files changed, 408 insertions(+), 100 deletions(-)
create mode 100644 pc-bios/s390-ccw/jump2ipl.c
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1.8.3.1
