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/*
* (C) Copyright 2006
* 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
*/
#include <common.h>
#include <asm/processor.h>
#include <ppc440.h>
/*************************************************************************
*
* 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)
volatile ulong val;
mtsdram(DDR0_02, 0x00000000);
/*
* Soft-reset SDRAM controller
*/
mtsdr(sdr_srst, SDR0_SRST0_DMC);
mtsdr(sdr_srst, 0x00000000);
mtsdram(DDR0_00, 0x0000190A);
mtsdram(DDR0_01, 0x01000000);
mtsdram(DDR0_03, 0x02030602);
mtsdram(DDR0_04, 0x13030300);
mtsdram(DDR0_05, 0x0202050E);
mtsdram(DDR0_06, 0x0104C823);
mtsdram(DDR0_07, 0x000D0100);
mtsdram(DDR0_08, 0x02360001);
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);
mtsdram(DDR0_26, 0x5B260181);
mtsdram(DDR0_27, 0x0000682B);
mtsdram(DDR0_28, 0x00000000);
mtsdram(DDR0_31, 0x00000000);
mtsdram(DDR0_42, 0x01000006);
mtsdram(DDR0_43, 0x050A0200);
mtsdram(DDR0_44, 0x00000005);
mtsdram(DDR0_02, 0x00000001);
/*
* Wait for DCC master delay line to finish calibration
*/
mfsdram(DDR0_17, val);
while (((val >> 8) & 0x000007f) == 0) {
mfsdram(DDR0_17, val);
}
#endif /* #ifndef CONFIG_NAND_U_BOOT */
return (CFG_MBYTES_SDRAM << 20);
}
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