[ECOS] Memory layout

Jonathan Larmour jlarmour@redhat.com
Wed Apr 10 13:51:00 GMT 2002


"Agarwal, Lomesh" wrote:
> 
> I want to burn RedBoot in a flash. I should use "ROM" start type. Right?

Yes.

> On my platform during boot Flash is aliased at 0 and after unaliasing flash
> my DRAM is at 0 address. I have modified the rom.ldi file as follows:
> 
> MEMORY
> {
>     ram  : ORIGIN = 0xA0000000, LENGTH = 0x2000000
>     rom  : ORIGIN = 0x00000000, LENGTH = 0x800000
> }

No, the memory layout should reflect the addresses after unaliasing or MMU
mapping. And it's up to the very initial startup code to set up the
unaliasing/remapping without relying on linker defined symbols or
relocations to do it.

Jifl
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