Trying to write to a chip using --fmap will fail if the chip does
not yet have a valid fmap table (for example, a blank chip). Let's
omit this flag when writing the entire image.
This commit adds several useful scripts (alongside the coreboot
image) in a `main` expression, which should be the primary build
expression going forward.
The following scripts should exists on all platforms:
- flashrom wrappers:
- `flashrom.sh`
- `flash-write-all.sh`
- `flash-write-fallback.sh`
- `flash-write-normal.sh`
- scripts to select which image (normal or fallback) is used for the
next boot:
- `nextboot-show.sh`
- `nextboot-use-fallback.sh`
- `nextboot-use-normal.sh`
- a script to write an image to the em100 flash-chip-emulator device:
- `em100-write.sh`
This commit makes `hostPlatform` part of the packageset for more
consistent handling. A top-level `hostPlatform` argument is exposed
to the caller, in case they want to customize the `hostPlatform`
(compiler flags, etc).
The `hostPlatform` argument is inherited into the ownerboot package
set, where it will be overridden by `src/platform/*.nix` if it has
not been set explicitly.
Making `hostPlatform` part of the package set allows for more
sophisticated overriding schemes, for example adding additional
compiler flags or sanity-checking the flags that the user has
provided.
Adam Joseph