arch/arm/mach-prima2/l2x0.c

   1 /*
   2  * l2 cache initialization for CSR SiRFprimaII
   3  *
   4  * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
   5  *
   6  * Licensed under GPLv2 or later.
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/of.h>
  12 #include <asm/hardware/cache-l2x0.h>
  13
  14 struct l2x0_aux
  15 {
  16         u32 val;
  17         u32 mask;
  18 };
  19
  20 static struct l2x0_aux prima2_l2x0_aux __initconst = {
  21         .val = 2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT,
  22         .mask = 0,
  23 };
  24
  25 static struct l2x0_aux marco_l2x0_aux __initconst = {
  26         .val = (2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT) |
  27                 (1 << L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT),
  28         .mask = L2X0_AUX_CTRL_MASK,
  29 };
  30
  31 static struct of_device_id sirf_l2x0_ids[] __initconst = {
  32         { .compatible = "sirf,prima2-pl310-cache", .data = &prima2_l2x0_aux, },
  33         { .compatible = "sirf,marco-pl310-cache", .data = &marco_l2x0_aux, },
  34         {},
  35 };
  36
  37 static int __init sirfsoc_l2x0_init(void)
  38 {
  39         struct device_node *np;
  40         const struct l2x0_aux *aux;
  41
  42         np = of_find_matching_node(NULL, sirf_l2x0_ids);
  43         if (np) {
  44                 aux = of_match_node(sirf_l2x0_ids, np)->data;
  45                 return l2x0_of_init(aux->val, aux->mask);
  46         }
  47
  48         return 0;
  49 }
  50 early_initcall(sirfsoc_l2x0_init);