[people/ms/u-boot.git] / doc / README.ARM-memory-map

Subject: Re: [PATCH][CFT] bring ARM memory layout in line with the documented behaviour
From: "Anders Larsen" <alarsen@rea.de>
Date: Thu, 18 Sep 2003 14:15:21 +0200
To: Wolfgang Denk <wd@denx.de>

...
>I still see  references  to  _armboot_start,  _armboot_end_data,  and
>_armboot_end - which role do these play now? Can we get rid of them?
>
>How are they (should they be) set in your memory map above?

_armboot_start contains the value of CONFIG_SYS_TEXT_BASE (0xA07E0000); it seems
CONFIG_SYS_TEXT_BASE and _armboot_start are both used for the same purpose in
different parts of the (ARM) code.
Furthermore, the startup code (cpu/<arm>/start.S) internally uses
another variable (_TEXT_BASE) with the same content as _armboot_start.
I agree that this mess should be cleaned up.
Commit	Line	Data
a8c7c708 WD	1	Subject: Re: [PATCH][CFT] bring ARM memory layout in line with the documented behaviour
	2	From: "Anders Larsen" <alarsen@rea.de>
	3	Date: Thu, 18 Sep 2003 14:15:21 +0200
	4	To: Wolfgang Denk <wd@denx.de>
	5
	6	...
	7	>I still see references to _armboot_start, _armboot_end_data, and
	8	>_armboot_end - which role do these play now? Can we get rid of them?
	9	>
	10	>How are they (should they be) set in your memory map above?
	11
14d0a02a WD	12	_armboot_start contains the value of CONFIG_SYS_TEXT_BASE (0xA07E0000); it seems
14d0a02a WD	13	CONFIG_SYS_TEXT_BASE and _armboot_start are both used for the same purpose in
a8c7c708 WD	14	different parts of the (ARM) code.
	15	Furthermore, the startup code (cpu/<arm>/start.S) internally uses
	16	another variable (_TEXT_BASE) with the same content as _armboot_start.
	17	I agree that this mess should be cleaned up.