tree eb7709a314b7ec5ba3eef1dcd60018f41d512a45
parent cf32eb89cb4e674f88e4af5025839d85d02485c6
author Grant Likely <grant.likely@secretlab.ca> 1271200346 -0700
committer Grant Likely <grant.likely@secretlab.ca> 1272500429 -0600

of/flattree: Make unflatten_device_tree() safe to call from any arch

This patch makes unflatten_device_tree() safe to call from any arch
setup code with the following changes:
- Make sure initial_boot_params actually points to a device tree blob
  before unflattening
- Make sure the initial_boot_params->magic field is correct
- If CONFIG_OF_FLATTREE is not set, then make unflatten_device_tree()
  an empty static inline function.

This patch also adds some additional debug output to the top of
unflatten_device_tree().

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>