ARM: rmobile: Move SoC sources to mach-rmobile
Move from arch/arm/cpu/armv7/rmobile/ to arch/arm/mach-rmobile/. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
This commit is contained in:
89
arch/arm/mach-rmobile/lowlevel_init_ca15.S
Normal file
89
arch/arm/mach-rmobile/lowlevel_init_ca15.S
Normal file
@@ -0,0 +1,89 @@
|
||||
/*
|
||||
* arch/arm/cpu/armv7/rmobile/lowlevel_init_ca15.S
|
||||
* This file is lager low level initialize.
|
||||
*
|
||||
* Copyright (C) 2013, 2014 Renesas Electronics Corporation
|
||||
*
|
||||
* SPDX-License-Identifier: GPL-2.0
|
||||
*/
|
||||
|
||||
#include <config.h>
|
||||
#include <linux/linkage.h>
|
||||
|
||||
ENTRY(lowlevel_init)
|
||||
mrc p15, 0, r4, c0, c0, 5 /* mpidr */
|
||||
orr r4, r4, r4, lsr #6
|
||||
and r4, r4, #7 /* id 0-3 = ca15.0,1,2,3 */
|
||||
|
||||
b do_lowlevel_init
|
||||
|
||||
.pool
|
||||
|
||||
/*
|
||||
* CPU ID #1-#3 come here
|
||||
*/
|
||||
.align 4
|
||||
do_cpu_waiting:
|
||||
ldr r1, =0xe6180000 /* sysc */
|
||||
1: ldr r0, [r1, #0x20] /* sbar */
|
||||
tst r0, r0
|
||||
beq 1b
|
||||
bx r0
|
||||
|
||||
/*
|
||||
* Only CPU ID #0 comes here
|
||||
*/
|
||||
.align 4
|
||||
do_lowlevel_init:
|
||||
ldr r2, =0xFF000044 /* PRR */
|
||||
ldr r1, [r2]
|
||||
and r1, r1, #0x7F00
|
||||
lsrs r1, r1, #8
|
||||
cmp r1, #0x4C /* 0x4C is ID of r8a7794 */
|
||||
beq _enable_actlr_smp
|
||||
|
||||
/* surpress wfe if ca15 */
|
||||
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 */
|
||||
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] */
|
||||
#if defined(CONFIG_R8A7790)
|
||||
orrne r0, r0, #0x20 /* L2CTLR[5] */
|
||||
#endif
|
||||
mcrne p15, 1, r0, c9, c0, 2
|
||||
|
||||
b _exit_init_l2_a15
|
||||
|
||||
_enable_actlr_smp: /* R8A7794 only (CA7) */
|
||||
#ifndef CONFIG_DCACHE_OFF
|
||||
mrc p15, 0, r0, c1, c0, 1
|
||||
orr r0, r0, #0x40
|
||||
mcr p15, 0, r0, c1, c0, 1
|
||||
#endif
|
||||
|
||||
_exit_init_l2_a15:
|
||||
ldr r3, =(CONFIG_SYS_INIT_SP_ADDR)
|
||||
sub sp, r3, #4
|
||||
str lr, [sp]
|
||||
|
||||
/* initialize system */
|
||||
bl s_init
|
||||
|
||||
ldr lr, [sp]
|
||||
mov pc, lr
|
||||
nop
|
||||
ENDPROC(lowlevel_init)
|
||||
.ltorg
|
||||
Reference in New Issue
Block a user