This modifies the segment at 0x0 so that it contains enough of a fake
Extended BIOS Data Area at addresses 0x40e and 0x413 that Xen can
correctly locate its trampoline code.
Since custom Xen is no longer required, we can remove the module,
the patches and all of the references to it in the board definition
files.
The whiptail binary will allow us to create GUI menus from bash scripts.
It is included in the newt library, which depends on slang. To enable,
the board configuration file should add CONFIG_SLANG=y and CONFIG_NEWT=y
This adds a `CONFIG_UROOT=y` option to allow the busybox
runtime to be replaced with the go u-root runtime.
You must have go 1.9 or newer for it to work.
It has been tested on the OCP winterfell and qemu nodes,
and it can be specified on the build command line as well.
Nothing from `heads/initrd` or any of the tools will be
linked into the cpio file. Only the kernel modules and the
go shell will be included.
Move board configuration into `boards/` instead of `config/`
Fix mistake in building kernel module tree before kernel was done.
Allow per-board initrd builds (#278)
Allow per-board configurations for things (#304)
Each of the submodule configuration files defined a subset of the
cross compiler tools that it used and many were picking up the
system `ar`, `nm`, `strip, `ld`, etc. They all now use a `Makefile`
macro that defines the path to the proper cross compiler tools.
For ones that need the tools, but not the musl-libc gcc,
there is $(CROSS_TOOLS_NOCC) that is all of them without gcc.
This is for musl-libc itself, as well as xen and the Linux kernel.
This addresses multiple issues:
* Issue #63: initrd is build fresh each time, so tracked files do not matter.
* Issue #144: build time configuration
* Issue #123: allows us to customize the startup experience
* Issue #122: manual start-xen will go away
* Issue #25: tpmtotp PCRs are updated after reading the secret
* Issue #16: insmod now meaures modules
The .INTERMEDIATE target seemed to causing the problem with
make thinking it didn't have to descend into the sub-module
directories. Removing it allows it to work correctly.
