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/*
* Copyright (C) 2012 Nobuhiro Iwamatsu <nobuhiro.Iwamatsu.yj@renesas.com>
* Copyright (C) 2012 Renesas Solutions Corp.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <linux/linkage.h>
ENTRY(lowlevel_init)
ldr r0, =MERAM_BASE
mov r1, #0x0
str r1, [r0]
mrc p15, 0, r0, c0, c0, 5
ands r0, r0, #0xF
beq lowlevel_init__
b wait_interrupt
.pool
.align 4
wait_interrupt:
#ifdef ICCICR
ldr r1, =ICCICR
mov r2, #0x0
str r2, [r1]
mov r2, #0xF0
adds r1, r1, #4 /* ICCPMR */
str r2, [r1]
ldr r1, =ICCICR
mov r2, #0x1
str r2, [r1]
#endif
wait_loop:
.long 0xE320F003 /* wfi */
ldr r2, [r1, #0xC]
str r2, [r1, #0x10]
ldr r0, =MERAM_BASE
ldr r2, [r0]
cmp r2, #0
movne pc, r2
b wait_loop
wait_loop_end:
.pool
.align 4
lowlevel_init__:
mov r0, #0x200000
loop0:
subs r0, r0, #1
bne loop0
ldr sp, MERAM_STACK
b s_init
.pool
.align 4
ENDPROC(lowlevel_init)
.ltorg
MERAM_STACK:
.word LOW_LEVEL_MERAM_STACK
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