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/*
* linux/arch/arm/boot/compressed/head-ftvpci.S
*
* Copyright (C) 2000 FutureTV Labs Ltd.
*
* Special startup code for FTV PCI board.
*/
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
.section ".start", #alloc, #execinstr
ftv_start:
mcr p15, 0, r0, c7, c5, 0 @ flush I cache
mrc p15, 0, r0, c1, c0
orr r0, r0, #1 << 12
mcr p15, 0, r0, c1, c0 @ enable I cache
mov r0, #0
mcreq p15, 0, r0, c15, c1, 2 @ enable clock switching
/* check to see if the kernel must be relocated */
ldr ip, =ftv_start
adr sl, ftv_start
teq ip, sl
beq 2f @ no need to copy
/* in the wrong place -> presumably, executing out of ROM */
sub ip, ip, sl @ displacement
ldr lr, =_start @ destination
sub sp, lr, ip @ source
ldr fp, =_edata @ end of copied area
1: ldmia sp!, {r0, r1, r2, r3, r4, r5, r6, r10}
stmia lr!, {r0, r1, r2, r3, r4, r5, r6, r10}
cmp lr, fp
ble 1b
2:
mov r8, #0
mov r7, #3
b 1f
.ltorg
1:
/* fall back into head.S */
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