[U-Boot-Users] Re: [PATCH][CFT] bring ARM memory layout in line with the documentation

From: Anders Larsen <alarsen@rea.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] Re: [PATCH][CFT] bring ARM memory layout in line with the documentation
Date: Mon, 27 Oct 2003 17:02:41 +0100	[thread overview]
Message-ID: <fc.004c4e48001dec4d3b9aca007685644e.1dec79@rea.de> (raw)
In-Reply-To: <3F9D3433.4060809@imc-berlin.de>

Steven Scholz <steven.scholz@imc-berlin.de> schreibt:
>I am confused about ARM and the use of TEXT_BASE:

That's understandable.
>
>Anders Larsen wrote:
> > Memory layout example based on my PXA255 (TEXT_BASE = 0xA07E0000):
> >
> > 0xA079FF74   Monitor Stack (growing downwards)
> > 0xA079FF80   Board Info Data and permanent copy of Global Data
> > 0xA07A0000   Malloc Arena
> > 0xA07E0000   RAM copy of Monitor Code
> > ...          optional: Frame Buffer
> > 0xA07FFFFF   [End of RAM]

The ordering of the blocks in the above memory map is only valid with
my patch applied.
>
>Wolfgang Denk wrote:
>
>> TEXT_BASE determines the start address in FLASH memory which is  used
>> before relocation.

...for all architectures except ARM.
>
>Now is TEXT_BASE the "address in FLASH memory" or the address of the "RAM
>copy 
>of Monitor Code"???

For ARM, TEXT_BASE refers to the RAM copy;
for all other architectures TEXT_BASE refers to FLASH.

Cheers
 Anders