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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
|
|
