mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-27 05:23:34 +00:00
d5a163d6ba
Clear possible errors in MCSR resulting from data-eye-search. If not done, then we could get an interrupt later on when exceptions are enabled. Signed-off-by: Stefan Roese <sr@denx.de>
117 lines
3.7 KiB
C
117 lines
3.7 KiB
C
/*
|
|
* (C) Copyright 2006
|
|
* Sylvie Gohl, AMCC/IBM, gohl.sylvie@fr.ibm.com
|
|
* Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
|
|
* Thierry Roman, AMCC/IBM, thierry_roman@fr.ibm.com
|
|
* Alain Saurel, AMCC/IBM, alain.saurel@fr.ibm.com
|
|
* Robert Snyder, AMCC/IBM, rob.snyder@fr.ibm.com
|
|
*
|
|
* (C) Copyright 2006-2007
|
|
* Stefan Roese, DENX Software Engineering, sr@denx.de.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
/* define DEBUG for debug output */
|
|
#undef DEBUG
|
|
|
|
#include <common.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/io.h>
|
|
#include <ppc440.h>
|
|
|
|
/*-----------------------------------------------------------------------------+
|
|
* Prototypes
|
|
*-----------------------------------------------------------------------------*/
|
|
extern int denali_wait_for_dlllock(void);
|
|
extern void denali_core_search_data_eye(void);
|
|
|
|
#if defined(CONFIG_NAND_SPL)
|
|
/* Using cpu/ppc4xx/speed.c to calculate the bus frequency is too big
|
|
* for the 4k NAND boot image so define bus_frequency to 133MHz here
|
|
* which is save for the refresh counter setup.
|
|
*/
|
|
#define get_bus_freq(val) 133000000
|
|
#endif
|
|
|
|
/*************************************************************************
|
|
*
|
|
* initdram -- 440EPx's DDR controller is a DENALI Core
|
|
*
|
|
************************************************************************/
|
|
long int initdram (int board_type)
|
|
{
|
|
#if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL)
|
|
#if !defined(CONFIG_NAND_SPL)
|
|
ulong speed = get_bus_freq(0);
|
|
#else
|
|
ulong speed = 133333333; /* 133MHz is on the safe side */
|
|
#endif
|
|
|
|
mtsdram(DDR0_02, 0x00000000);
|
|
|
|
mtsdram(DDR0_00, 0x0000190A);
|
|
mtsdram(DDR0_01, 0x01000000);
|
|
mtsdram(DDR0_03, 0x02030602);
|
|
mtsdram(DDR0_04, 0x0A020200);
|
|
mtsdram(DDR0_05, 0x02020308);
|
|
mtsdram(DDR0_06, 0x0102C812);
|
|
mtsdram(DDR0_07, 0x000D0100);
|
|
mtsdram(DDR0_08, 0x02430001);
|
|
mtsdram(DDR0_09, 0x00011D5F);
|
|
mtsdram(DDR0_10, 0x00000300);
|
|
mtsdram(DDR0_11, 0x0027C800);
|
|
mtsdram(DDR0_12, 0x00000003);
|
|
mtsdram(DDR0_14, 0x00000000);
|
|
mtsdram(DDR0_17, 0x19000000);
|
|
mtsdram(DDR0_18, 0x19191919);
|
|
mtsdram(DDR0_19, 0x19191919);
|
|
mtsdram(DDR0_20, 0x0B0B0B0B);
|
|
mtsdram(DDR0_21, 0x0B0B0B0B);
|
|
mtsdram(DDR0_22, 0x00267F0B);
|
|
mtsdram(DDR0_23, 0x00000000);
|
|
mtsdram(DDR0_24, 0x01010002);
|
|
if (speed > 133333334)
|
|
mtsdram(DDR0_26, 0x5B26050C);
|
|
else
|
|
mtsdram(DDR0_26, 0x5B260408);
|
|
mtsdram(DDR0_27, 0x0000682B);
|
|
mtsdram(DDR0_28, 0x00000000);
|
|
mtsdram(DDR0_31, 0x00000000);
|
|
mtsdram(DDR0_42, 0x01000006);
|
|
mtsdram(DDR0_43, 0x030A0200);
|
|
mtsdram(DDR0_44, 0x00000003);
|
|
mtsdram(DDR0_02, 0x00000001);
|
|
|
|
denali_wait_for_dlllock();
|
|
#endif /* #ifndef CONFIG_NAND_U_BOOT */
|
|
|
|
#ifdef CONFIG_DDR_DATA_EYE
|
|
/* -----------------------------------------------------------+
|
|
* Perform data eye search if requested.
|
|
* ----------------------------------------------------------*/
|
|
denali_core_search_data_eye();
|
|
#endif
|
|
|
|
/*
|
|
* Clear possible errors resulting from data-eye-search.
|
|
* If not done, then we could get an interrupt later on when
|
|
* exceptions are enabled.
|
|
*/
|
|
set_mcsr(get_mcsr());
|
|
|
|
return (CFG_MBYTES_SDRAM << 20);
|
|
}
|