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arm: rmobile: r8a779x: Fix L2 cache init and latency setting

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L2CTLR only need to update for cluster 0.
This changes L2CTLR to initialize only when cluster is 0.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
This commit is contained in:
Nobuhiro Iwamatsu 2014-03-28 09:43:36 +09:00 • committed by Nobuhiro Iwamatsu
parent 5723e24df5
commit 42c53ab0a7
1 changed files with 18 additions and 2 deletions
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20
arch/arm/cpu/armv7/rmobile/lowlevel_init_ca15.S
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@ -2,7 +2,7 @@
* arch/arm/cpu/armv7/rmobile/lowlevel_init_ca15.S
* This file is lager low level initialize.
*
* Copyright (C) 2013 Renesas Electronics Corporation
* Copyright (C) 2013, 2014 Renesas Electronics Corporation
*
* SPDX-License-Identifier: GPL-2.0
*/
@ -36,16 +36,32 @@ do_cpu_waiting:
.align 4
do_lowlevel_init:
/* surpress wfe if ca15 */
tst r4, #4
tst r4, #4
mrceq p15, 0, r0, c1, c0, 1 /* actlr */
orreq r0, r0, #(1<<7)
mcreq p15, 0, r0, c1, c0, 1
/* and set l2 latency */
mrceq p15, 1, r0, c9, c0, 2 /* l2ctlr */
orreq r0, r0, #0x00000800
orreq r0, r0, #0x00000003
mcreq p15, 1, r0, c9, c0, 2
mrc p15, 0, r0, c0, c0, 5 /* r0 = MPIDR */
and r0, r0, #0xf00
lsr r0, r0, #8
tst r0, #1 /* only need for cluster 0 */
bne _exit_init_l2_a15
mrc p15, 1, r0, c9, c0, 2 /* r0 = L2CTLR */
and r1, r0, #7
cmp r1, #3 /* has already been set up */
bicne r0, r0, #0xe7
orrne r0, r0, #0x83 /* L2CTLR[7:6] + L2CTLR[2:0] */
orrne r0, r0, #0x20 /* L2CTLR[5] */
mcrne p15, 1, r0, c9, c0, 2
_exit_init_l2_a15:
ldr r3, =(CONFIG_SYS_INIT_SP_ADDR)
sub sp, r3, #4
str lr, [sp]