arch/arm/mach-at91/atmel_sfr.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2015 Atmel Corporation
   4  *                    Wenyou Yang <wenyou.yang@atmel.com>
   5  */
   6
   7 #include <common.h>
   8 #include <asm/hardware.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/sama5_sfr.h>
  11
  12 void redirect_int_from_saic_to_aic(void)
  13 {
  14         struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR;
  15         u32 key32;
  16
  17         if (!(readl(&sfr->aicredir) & ATMEL_SFR_AICREDIR_NSAIC)) {
  18                 key32 = readl(&sfr->sn1) ^ ATMEL_SFR_AICREDIR_KEY;
  19                 writel((key32 | ATMEL_SFR_AICREDIR_NSAIC), &sfr->aicredir);
  20         }
  21 }
  22
  23 void configure_2nd_sram_as_l2_cache(void)
  24 {
  25         struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR;
  26
  27         writel(1, &sfr->l2cc_hramc);
  28 }