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kernel/linux-imx6_3.14.28/arch/arm/mach-prima2/headsmp.S 995 Bytes
6b13f685e   김민수   BSP 최초 추가
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  /*
   * Entry of the second core for CSR Marco dual-core SMP SoCs
   *
   * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
   *
   * Licensed under GPLv2 or later.
   */
  
  #include <linux/linkage.h>
  #include <linux/init.h>
  
  /*
   * SIRFSOC 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(sirfsoc_secondary_startup)
  	bl v7_invalidate_l1
          mrc     p15, 0, r0, c0, c0, 5
          and     r0, r0, #15
          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
  ENDPROC(sirfsoc_secondary_startup)
  
          .align
  1:      .long   .
          .long   pen_release