[PATCH -v6 0/3] x86 boot: 32-bit boot protocol

[Huang, Ying]

This patchset defines a 32-bit boot protocol for x86 platform,
adds an extensible boot parameter passing mechanism, export the boot
parameters via sysfs.

The patchset has been tested against kernel of git version
v2.6.23-6623-g55b70a0 on x86_64 and i386.

This patchset is based on the proposal of Peter Anvin.


v6:

- The linked list of setup_data is copied to memory area right after
  the kernel _end during early kernel bootstrap to solve the issue
  that where the safe place is to place linked list of setup_data.

v5:

- Use bt_ioremap/bt_iounmap in copy_setup_data.

v4:

- Reserve setup_data and boot parameters for accessing during
  runtime.
- Export boot parameters via sysfs.

v3:

- Move hd0_info and hd1_info back to zero page for compatibility.

v2:

- Increase the boot protocol version number
- Check version number before parsing setup data.
- Revise zero page description according to the source code and move
  them to zero-page.txt.


Best Regards,
Huang Ying
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