[U-Boot] Most ARM CPU's have buggy clear_bss?

Darius Augulis
2010-10-27T08:58:30Z

On Wed, Oct 27, 2010 at 11:54 AM, Sughosh Ganu <urwithsughosh@gmail.com> wrote:
> hi,
>
> On Wed Oct 27, 2010 at 11:22:17AM +0300, Darius Augulis wrote:
>> Hi,
>>
>> On Wed, Oct 27, 2010 at 11:01 AM, Sughosh Ganu <urwithsughosh@gmail.com> wrote:
>
>> >
>> > ?Not sure which core are you referring to. I checked for arm926ejs,
>> > ?and we have conditional code inclusion based on the definition of
>> > ?CONFIG_SYS_ARM_WITHOUT_RELOC. So the start address in both the cases
>> > ?is determined based on whether relocation is enabled or not.
>>
>> The same is at least for arm926ejs, arm1136, arm1176.
>> As you probably know ?CONFIG_SYS_ARM_WITHOUT_RELOC support will be
>> removed soon and I'm talking about code which is under
>> #ifndef ?CONFIG_SYS_ARM_WITHOUT_RELOC.
>
> ?Umm. I am not sure i get you here. If CONFIG_SYS_ARM_WITHOUT_RELOC
> ?is not defined, it means we have enabled relocation, so all the
> ?address calculation should be w.r.t the relocation address.

No, there could be several different relocation methods - with and
without preloader etc.
There is another definition CONFIG_SKIP_RELOCATE_UBOOT which changes
boot sequence dramatically.
And it isn't CONFIG_SYS_ARM_WITHOUT_RELOC dependent.

Darius.

>
> -sughosh
>