mirror of
https://github.com/brain-hackers/u-boot-brain
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751b9b5189
This patch enables the OneNAND boot within U-Boot. Before this work, we used another OneNAND IPL called X-Loader based on open source. With this work, we can build the oneboot.bin image without other program. The build sequence is simple. First, it compiles the u-boot.bin Second, it compiles OneNAND IPL Finally, it becomes the oneboot.bin from OneNAND IPL and u-boot.bin The mechanism is similar with NAND boot except it boots from itself. Another thing is that you can only use the OneNAND IPL only to work other bootloader such as RedBoot and so on. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
/*
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* (C) Copyright 2005-2008 Samsung Electronics
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* Kyungmin Park <kyungmin.park@samsung.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/arch/mux.h>
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#define write_config_reg(reg, value) \
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do { \
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writeb(value, reg); \
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} while (0)
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/*****************************************
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* Routine: board_init
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* Description: Early hardware init.
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*****************************************/
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int board_init(void)
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{
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return 0;
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}
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#ifdef CFG_PRINTF
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/* Pin Muxing registers used for UART1 */
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/****************************************
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* Routine: muxSetupUART1 (ostboot)
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* Description: Set up uart1 muxing
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*****************************************/
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static void muxSetupUART1(void)
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{
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/* UART1_CTS pin configuration, PIN = D21 */
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write_config_reg(CONTROL_PADCONF_UART1_CTS, 0);
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/* UART1_RTS pin configuration, PIN = H21 */
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write_config_reg(CONTROL_PADCONF_UART1_RTS, 0);
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/* UART1_TX pin configuration, PIN = L20 */
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write_config_reg(CONTROL_PADCONF_UART1_TX, 0);
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/* UART1_RX pin configuration, PIN = T21 */
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write_config_reg(CONTROL_PADCONF_UART1_RX, 0);
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}
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#endif
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/**********************************************************
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* Routine: s_init
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* Description: Does early system init of muxing and clocks.
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* - Called at time when only stack is available.
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**********************************************************/
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int s_init(int skip)
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{
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#ifdef CFG_PRINTF
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muxSetupUART1();
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#endif
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return 0;
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}
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