/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  Copyright (c) 2003 ARM Limited
 *  All Rights Reserved
 */
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/assembler.h>

/*
 * Realview/Versatile Express specific entry point for secondary CPUs.
 * This provides a "holding pen" into which all secondary cores are held
 * until we're ready for them to initialise.
 */
ENTRY(versatile_secondary_startup)
 ARM_BE8(setend be)
        mrc     p15, 0, r0, c0, c0, 5
        bic     r0, #0xff000000
        adr     r4, 1f
        ldmia   r4, {r5, r6}
        sub     r4, r4, r5
        add     r6, r6, r4
pen:    ldr     r7, [r6]
        cmp     r7, r0
        bne     pen

        /*
         * we've been released from the holding pen: secondary_stack
         * should now contain the SVC stack for this core
         */
        b       secondary_startup

        .align
1:      .long   .
        .long   versatile_cpu_release
ENDPROC(versatile_secondary_startup)