Separate out ram shadow code and permit more code to write to bios.

Extract shadow code from rombios32.c to its own file - shadow.c.
Reorg post.c so that shadow enable happens early and ram lock happens
    late in boot process.
Also, improve some comments in post.c and reorg code slightly.
5 files changed
tree: 0f4eedfeec0be5e7b0b6095f52bc81a4d49702fc
  1. .gitignore
  2. COPYING
  3. Makefile
  4. README
  5. TODO
  6. src/
  7. tools/