Re: [U-Boot] P4080 Reset Vector

On Tue, 14 Sep 2010 01:43:40 -0700 MArunKumar marunk2004@yahoo.com wrote:

Hi Kumar Gala

Thanks for ur kind reply.

Till, I am not clear why the resect vector points different address(0xefff_fffc).

From your reply, I understood Text_Base address is 0xeff8_0000, so the resetvec address points to 0xefff_fffc.

For all 85xx processor except(MPC8572) the resetvec = 0xffff_fffc, Text_Base = 0xfff8_0000 For p4080 the resetvec = 0xefff_fffc,Text_Base = 0xeff8_0000

For p4080 why the resetvec and Text_Base address is different from the other 85xx processor ?.

The reset vector is 0xfffffffc. 0xeffffffc is where the reset vector code sits once flash has been remapped. Until that remapping happens, you can't use any absolute addresses by symbol.

-Scott