root/arch/arm/mach-socfpga/headsmp.S
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  Copyright (c) 2003 ARM Limited
 *  Copyright (c) u-boot contributors
 *  Copyright (c) 2012 Pavel Machek <pavel@denx.de>
 */
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/page.h>
#include <asm/assembler.h>

        .arch   armv7-a
        .arm

ENTRY(secondary_trampoline)
        /* CPU1 will always fetch from 0x0 when it is brought out of reset.
         * Thus, we can just subtract the PAGE_OFFSET to get the physical
         * address of &cpu1start_addr. This would not work for platforms
         * where the physical memory does not start at 0x0.
        */
ARM_BE8(setend  be)
        adr     r0, 1f
        ldmia   r0, {r1, r2}
        sub     r2, r2, #PAGE_OFFSET
        ldr     r3, [r2]
        ldr     r4, [r3]
ARM_BE8(rev     r4, r4)
        bx      r4

        .align
1:      .long   .
        .long   socfpga_cpu1start_addr
ENTRY(secondary_trampoline_end)