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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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