arch/arm/mach-uniphier/ph1-sld3/memconf.c

   1 /*
   2  * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <linux/types.h>
   9 #include <linux/sizes.h>
  10 #include <mach/sg-regs.h>
  11
  12 static inline u32 sg_memconf_val_ch2(unsigned long size, int num)
  13 {
  14         int size_mb = size / num;
  15         u32 ret;
  16
  17         switch (size_mb) {
  18         case SZ_64M:
  19                 ret = SG_MEMCONF_CH2_SZ_64M;
  20                 break;
  21         case SZ_128M:
  22                 ret = SG_MEMCONF_CH2_SZ_128M;
  23                 break;
  24         case SZ_256M:
  25                 ret = SG_MEMCONF_CH2_SZ_256M;
  26                 break;
  27         case SZ_512M:
  28                 ret = SG_MEMCONF_CH2_SZ_512M;
  29                 break;
  30         default:
  31                 BUG();
  32                 break;
  33         }
  34
  35         switch (num) {
  36         case 1:
  37                 ret |= SG_MEMCONF_CH2_NUM_1;
  38                 break;
  39         case 2:
  40                 ret |= SG_MEMCONF_CH2_NUM_2;
  41                 break;
  42         default:
  43                 BUG();
  44                 break;
  45         }
  46         return ret;
  47 }
  48
  49 u32 memconf_additional_val(void)
  50 {
  51         return sg_memconf_val_ch2(CONFIG_SDRAM2_SIZE, CONFIG_DDR_NUM_CH2);
  52 }