/* SPDX-License-Identifier: GPL-2.0 */
/* linux/arch/arm/plat-s3c64xx/sleep.S
 *
 * Copyright 2008 Openmoko, Inc.
 * Copyright 2008 Simtec Electronics
 *      Ben Dooks <ben@simtec.co.uk>
 *      http://armlinux.simtec.co.uk/
 *
 * S3C64XX CPU sleep code
 */

#include <linux/linkage.h>
#include <asm/assembler.h>
#include "map.h"

#undef S3C64XX_VA_GPIO
#define S3C64XX_VA_GPIO (0x0)

#include "regs-gpio.h"

#define LL_UART (S3C_PA_UART + (0x400 * CONFIG_S3C_LOWLEVEL_UART_PORT))

        .text

        /* Sleep magic, the word before the resume entry point so that the
         * bootloader can check for a resumeable image. */

        .word   0x2bedf00d

        /* s3c_cpu_reusme
         *
         * This is the entry point, stored by whatever method the bootloader
         * requires to get the kernel runnign again. This code expects to be
         * entered with no caches live and the MMU disabled. It will then
         * restore the MMU and other basic CP registers saved and restart
         * the kernel C code to finish the resume code.
        */

ENTRY(s3c_cpu_resume)
        msr     cpsr_c, #PSR_I_BIT | PSR_F_BIT | SVC_MODE
        ldr     r2, =LL_UART            /* for debug */
        b       cpu_resume