cpuid for ARMv7

          --- old/usr/src/uts/armv7/bcm2836/os/bcm2836_bsmdep.c
          +++ new/usr/src/uts/armv7/bcm2836/os/bcm2836_bsmdep.c

   1    1  /*
   2    2   * This file and its contents are supplied under the terms of the
   3    3   * Common Development and Distribution License ("CDDL"), version 1.0.
   4    4   * You may only use this file in accordance with the terms of version
   5    5   * 1.0 of the CDDL.
   6    6   *
   7    7   * A full copy of the text of the CDDL should have accompanied this
   8    8   * source.  A copy of the CDDL is also available via the Internet at
   9    9   * http://www.illumos.org/license/CDDL.
  10   10   */
  11   11  

  12   12  /*
  13   13   * Copyright (c) 2014 Joyent, Inc.  All rights reserved.
  14   14   */
  15   15  
  16   16  /*
  17   17   * Broadcom 2836 board specific functions.
  18   18   */
  19   19  
  20   20  #include <vm/vm_dep.h>
  21   21  
  22      -void
  23      -armv7_bsmdep_l2cacheinfo(void)
  24      -{
  25      -        /*
  26      -         * Per the BCM 2836 ARM peripherals manual, the L2 cache on the BCM
  27      -         * 2836 is actually used by the GPU, and from the CPU point of view,
  28      -         * we don't have one.
  29      -         *
  30      -         * This can be toggled on the rPi, but it appears that that toggling
  31      -         * can't be probed for.
  32      -         *
  33      -         * At present, we set these variables as if we owned the l2,
  34      -         * regardless of whether we in fact do.  This might be a terrible
  35      -         * idea.
  36      -         *
  37      -         * XXX: It might be reasonable to demand that we (the CPU) have the l2
  38      -         * cache, although since it is off-chip this may actually hinder
  39      -         * performance.
  40      -         */
  41      -
  42      -        armv6_l2cache_linesz = 32;
  43      -        /* 128K per the BCM2836 manual, though we by default see none of it */
  44      -        armv6_l2cache_size = 0x20000;
  45      -}
    

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