Fixed some issues reported by Vladimir:

Initial alignment value 1 instead of 0.
Verify error by returning address being -1 since 0 may be valid in 
memory allocated directly by the Open Firmware.
Use 'end' instead of (addr + len) to search for available memory.
change hardcoded value '1' to GRUB_MEMORY_AVAILABLE.

On 10/19/2010 11:46 AM, Manoel Rebelo Abraches wrote:
> This is another version to the same fix.
>
> The first patch 01_mem.patch creates a new function to allocate memory
> using the "available" property in the "memory" node.
> The second patch 02_offset.patch correctly finds the linux entry point,
> also assumes that more segments can exist (made accordingly with sparc
> implementation)
>
> The patch was made passing  -Bbp to diff as suggested by Vladimir.
> I tested with RHEL/SUSE images and some RHEL/SUSE kernel I had and
> worked correctly. Before the images failed to boot.
> Thank you for reviewing this.
>
> On Mon, 2010-09-27 at 04:29 -0300, Manoel Rebelo Abraches wrote:
>> This Patch loads kernel LOAD segment at the address fixed by PhysAddr
>> with alignment Align at the ELF program header. Even if this address is
>> in use other address with the same alignment is found "linuxadr" (since
>> linux can relocate itself). The linux main function is then find in the
>> adress linuxaddr + entry + (PhysAddr- Entry), where Entry is  the Entry
>> point address in the ELF header. (PhysAddr- Entry) gives the offset
>> where the linux entry point is located after linuxaddr.
>>
>>
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>
>
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