arch/arm/cpu/armv7/s5pc1xx/sromc.c

   1 /*
   2  * Copyright (C) 2010 Samsung Electronics
   3  * Naveen Krishna Ch <ch.naveen@samsung.com>
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <asm/io.h>
  26 #include <asm/arch/smc.h>
  27
  28 /*
  29  * s5pc1xx_config_sromc() - select the proper SROMC Bank and configure the
  30  *                  band width control and bank control registers
  31  * srom_bank    - SROM Bank 0 to 5
  32  * smc_bw_conf  - SMC Band witdh reg configuration value
  33  * smc_bc_conf  - SMC Bank Control reg configuration value
  34  */
  35 void s5pc1xx_config_sromc(u32 srom_bank, u32 smc_bw_conf, u32 smc_bc_conf)
  36 {
  37         u32 tmp;
  38         struct s5pc1xx_smc *srom;
  39
  40         if (cpu_is_s5pc100())
  41                 srom = (struct s5pc1xx_smc *)S5PC100_SROMC_BASE;
  42         else
  43                 srom = (struct s5pc1xx_smc *)S5PC110_SROMC_BASE;
  44
  45         /* Configure SMC_BW register to handle proper SROMC bank */
  46         tmp = srom->bw;
  47         tmp &= ~(0xF << (srom_bank * 4));
  48         tmp |= smc_bw_conf;
  49         srom->bw = tmp;
  50
  51         /* Configure SMC_BC register */
  52         srom->bc[srom_bank] = smc_bc_conf;
  53 }