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kernel/linux-imx6_3.14.28/arch/arm/mach-prima2/l2x0.c 1.11 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * l2 cache initialization for CSR SiRFprimaII
   *
   * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
   *
   * Licensed under GPLv2 or later.
   */
  
  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <linux/of.h>
  #include <asm/hardware/cache-l2x0.h>
  
  struct l2x0_aux
  {
  	u32 val;
  	u32 mask;
  };
  
  static struct l2x0_aux prima2_l2x0_aux __initconst = {
  	.val = 2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT,
  	.mask =	0,
  };
  
  static struct l2x0_aux marco_l2x0_aux __initconst = {
  	.val = (2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT) |
  		(1 << L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT),
  	.mask = L2X0_AUX_CTRL_MASK,
  };
  
  static struct of_device_id sirf_l2x0_ids[] __initconst = {
  	{ .compatible = "sirf,prima2-pl310-cache", .data = &prima2_l2x0_aux, },
  	{ .compatible = "sirf,marco-pl310-cache", .data = &marco_l2x0_aux, },
  	{},
  };
  
  static int __init sirfsoc_l2x0_init(void)
  {
  	struct device_node *np;
  	const struct l2x0_aux *aux;
  
  	np = of_find_matching_node(NULL, sirf_l2x0_ids);
  	if (np) {
  		aux = of_match_node(sirf_l2x0_ids, np)->data;
  		return l2x0_of_init(aux->val, aux->mask);
  	}
  
  	return 0;
  }
  early_initcall(sirfsoc_l2x0_init);