headsmp.S 1007 B

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  1. /*
  2. * Entry of the second core for CSR Marco dual-core SMP SoCs
  3. *
  4. * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
  5. *
  6. * Licensed under GPLv2 or later.
  7. */
  8. #include <linux/linkage.h>
  9. #include <linux/init.h>
  10. __CPUINIT
  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. */
  16. ENTRY(sirfsoc_secondary_startup)
  17. bl v7_invalidate_l1
  18. mrc p15, 0, r0, c0, c0, 5
  19. and r0, r0, #15
  20. adr r4, 1f
  21. ldmia r4, {r5, r6}
  22. sub r4, r4, r5
  23. add r6, r6, r4
  24. pen: ldr r7, [r6]
  25. cmp r7, r0
  26. bne pen
  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
  32. ENDPROC(sirfsoc_secondary_startup)
  33. .align
  34. 1: .long .
  35. .long pen_release