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[ARM] 3259/1: remove phys_ram from struct machine_desc (part 1) 

Patch from Nicolas Pitre

This field is redundent since it must be equal to PHYS_OFFSET anyway.

First, let's  use PHYS_OFFSET directly instead.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Nicolas Pitre 2006-01-13 20:51:46 +00:00 committed by Russell King
parent 3261e362f6
commit 2df96b34aa
1 changed files with 3 additions and 4 deletions
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7
arch/arm/kernel/head.S
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@ -251,12 +251,11 @@ __turn_mmu_on:
* r10 = procinfo
*
* Returns:
* r0, r3, r5, r6, r7 corrupted
* r0, r3, r6, r7 corrupted
* r4 = physical page table address
*/
.type __create_page_tables, %function
__create_page_tables:
ldr r5, [r8, #MACHINFO_PHYSRAM] @ physram
pgtbl r4 @ page table address
/*
@ -303,7 +302,7 @@ __create_page_tables:
* Then map first 1MB of ram in case it contains our boot params.
*/
add r0, r4, #PAGE_OFFSET >> 18
orr r6, r5, r7
orr r6, r7, #PHYS_OFFSET
str r6, [r0]
#ifdef CONFIG_XIP_KERNEL
@ -311,7 +310,7 @@ __create_page_tables:
* Map some ram to cover our .data and .bss areas.
* Mapping 3MB should be plenty.
*/
sub r3, r4, r5
sub r3, r4, #PHYS_OFFSET
mov r3, r3, lsr #20
add r0, r0, r3, lsl #2
add r6, r6, r3, lsl #20