onenand_ipl/board/apollon/apollon.c

   1 /*
   2  * (C) Copyright 2005-2008 Samsung Electronics
   3  * Kyungmin Park <kyungmin.park@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 #include <common.h>
  24 #include <asm/arch/mux.h>
  25
  26 #define write_config_reg(reg, value)                                    \
  27 do {                                                                    \
  28         writeb(value, reg);                                             \
  29 } while (0)
  30
  31 /*****************************************
  32  * Routine: board_init
  33  * Description: Early hardware init.
  34  *****************************************/
  35 int board_init(void)
  36 {
  37         return 0;
  38 }
  39
  40 #ifdef CONFIG_SYS_PRINTF
  41 /* Pin Muxing registers used for UART1 */
  42 /****************************************
  43  * Routine: muxSetupUART1  (ostboot)
  44  * Description: Set up uart1 muxing
  45  *****************************************/
  46 static void muxSetupUART1(void)
  47 {
  48         /* UART1_CTS pin configuration, PIN = D21 */
  49         write_config_reg(CONTROL_PADCONF_UART1_CTS, 0);
  50         /* UART1_RTS pin configuration, PIN = H21 */
  51         write_config_reg(CONTROL_PADCONF_UART1_RTS, 0);
  52         /* UART1_TX pin configuration, PIN = L20 */
  53         write_config_reg(CONTROL_PADCONF_UART1_TX, 0);
  54         /* UART1_RX pin configuration, PIN = T21 */
  55         write_config_reg(CONTROL_PADCONF_UART1_RX, 0);
  56 }
  57 #endif
  58
  59 /**********************************************************
  60  * Routine: s_init
  61  * Description: Does early system init of muxing and clocks.
  62  * - Called at time when only stack is available.
  63  **********************************************************/
  64 int s_init(int skip)
  65 {
  66 #ifdef CONFIG_SYS_PRINTF
  67         muxSetupUART1();
  68 #endif
  69         return 0;
  70 }