This patch adds a makefile, so we can build our ccw firmware. Also
add the resulting binaries to .gitignore, so that nobody is annoyed
they might be in the tree.
Signed-off-by: Alexander Graf <agraf@suse.de>
On s390, there is an architected boot map format that we can read to
boot a certain entry off the disk. Implement a simple reader for this
that always boots the first (default) entry.
Signed-off-by: Alexander Graf <agraf@suse.de>
Like all great programs, we have to call between different functions in
different object files. And all of them need a common ground of defines.
Provide a file that provides these defines.
Signed-off-by: Alexander Graf <agraf@suse.de>
In order to boot, we need to be able to access a virtio-blk device through
the CCW bus. Implement support for this.
Signed-off-by: Alexander Graf <agraf@suse.de>
In order to communicate with the user, we need an I/O mechanism that he
can read. Implement SCLP ASCII support, which happens to be the default
in the s390 ccw machine.
This file is missing read support for now. It can only print messages.
Signed-off-by: Alexander Graf <agraf@suse.de>
This C file is the main driving piece of the s390 ccw firmware. It
provides a search for a workable block device, sets it as the default
to boot off of and boots from it.
Signed-off-by: Alexander Graf <agraf@suse.de>
We want to write most of our code in C, so add a small assembly
stub that jumps straight into C code for us to continue booting.
Signed-off-by: Alexander Graf <agraf@suse.de>
Alexander Graf