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authorwdenk <wdenk>2003-12-06 19:49:23 +0000
committerwdenk <wdenk>2003-12-06 19:49:23 +0000
commita8c7c708a9e0051c6358718c53572a4681eaa22b (patch)
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* Patch by Gleb Natapov, 19 Sep 2003:
Move most of the timer interrupt related PPC code to ppc_lib/interrupts.c * Patch by Anders Larsen, 17 Sep 2003: Bring ARM memory layout in sync with the documentation: stack and malloc-heap are now located _below_ the U-Boot code
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+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 TEXT_BASE (0xA07E0000); it seems
+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.
+
+_armboot_end_data is the end address of the initialized data section,
+and is only used in one place (board/logodl/flash.c - the reference in
+lib_arm/board.c is purely informational).
+
+_armboot_end is the end address of the BSS and is used to determine
+the address of the VFD buffer.
+
+Eliminating those should be doable, and at least the patch already
+eliminates _armboot_real_end.