LXR linux/arch/arm/mach-prima2/headsmp.S

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * Entry of the second core for CSR Marco dual-core SMP SoCs
   4 *
   5 * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
   6 */
   7
   8#include <linux/linkage.h>
   9#include <linux/init.h>
  10
  11/*
  12 * SIRFSOC specific entry point for secondary CPUs.  This provides
  13 * a "holding pen" into which all secondary cores are held until we're
  14 * ready for them to initialise.
  15 */
  16ENTRY(sirfsoc_secondary_startup)
  17        mrc     p15, 0, r0, c0, c0, 5
  18        and     r0, r0, #15
  19        adr     r4, 1f
  20        ldmia   r4, {r5, r6}
  21        sub     r4, r4, r5
  22        add     r6, r6, r4
  23pen:    ldr     r7, [r6]
  24        cmp     r7, r0
  25        bne     pen
  26
  27        /*
  28         * we've been released from the holding pen: secondary_stack
  29         * should now contain the SVC stack for this core
  30         */
  31        b       secondary_startup
  32ENDPROC(sirfsoc_secondary_startup)
  33
  34        .align
  351:      .long   .
  36        .long   prima2_pen_release
  37