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/*
* (C) Copyright 2001
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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 <mpc8xx.h>
#define _NOT_USED_ 0xFFFFFFFF
/*Orginal table, GPL4 disabled*/
const uint sdram_table[] =
{
/* single read (offset 0x00 in upm ram) */
0x1f07cc04, 0xeeaeec04, 0x11adcc04, 0xefbbac00,
0x1ff74c47,
/* Precharge */
0x1FF74C05,
_NOT_USED_,
_NOT_USED_,
/* burst read (offset 0x08 in upm ram) */
0x1f07cc04, 0xeeaeec04, 0x00adcc04, 0x00afcc00,
0x00afcc00, 0x01afcc00, 0x0fbb8c00, 0x1ff74c47,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* single write (offset 0x18 in upm ram) */
0x1f27cc04, 0xeeaeac00, 0x01b90c04, 0x1ff74c47,
/* Load moderegister */
0x1FF74C34, /*Precharge*/
0xEFEA8C34, /*NOP*/
0x1FB54C35, /*Load moderegister*/
_NOT_USED_,
/* burst write (offset 0x20 in upm ram) */
0x1f07cc04, 0xeeaeac00, 0x00ad4c00, 0x00afcc00,
0x00afcc00, 0x01bb8c04, 0x1ff74c47, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* refresh (offset 0x30 in upm ram) */
0x1ff5cc84, 0xffffec04, 0xffffec04, 0xffffec04,
0xffffec84, 0xffffec07, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* exception (offset 0x3C in upm ram) */
0x7fffec07, _NOT_USED_, _NOT_USED_, _NOT_USED_,
};
/* GPL5 driven every cycle */
/* the display and the DSP */
const uint dsp_disp_table[] =
{
/* single read (offset 0x00 in upm ram) */
0xffffc80c, 0xffffc004, 0x0fffc004, 0x0fffd004,
0x0fffc000, 0x0fffc004, 0x3fffc004, 0xffffcc05,
/* burst read (offset 0x08 in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* single write (offset 0x18 in upm ram) */
0xffffcc0c, 0xffffc004, 0x0fffc004, 0x0fffd004,
0x0fffc000, 0x0fffc004, 0x7fffc004, 0xfffffc05,
/* burst write (offset 0x20 in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* refresh (offset 0x30 in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* exception (offset 0x3C in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
};
int checkboard (void)
{
puts ("Board: FlagaDM V3.0\n");
return 0;
}
long int initdram (int board_type)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
long int size_b0;
memctl->memc_or2 = CFG_OR2;
memctl->memc_br2 = CFG_BR2;
udelay(100);
upmconfig(UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
memctl->memc_mptpr = MPTPR_PTP_DIV16;
memctl->memc_mamr = CFG_MAMR_48_SDR | MAMR_TLFA_1X;
/*Do the initialization of the SDRAM*/
/*Start with the precharge cycle*/
memctl->memc_mcr = (MCR_OP_RUN | MCR_UPM_A | MCR_MB_CS2 | \
MCR_MLCF(1) | MCR_MAD(0x5));
/*Then we need two refresh cycles*/
memctl->memc_mamr = CFG_MAMR_48_SDR | MAMR_TLFA_2X;
memctl->memc_mcr = (MCR_OP_RUN | MCR_UPM_A | MCR_MB_CS2 | \
MCR_MLCF(2) | MCR_MAD(0x30));
/*Mode register programming*/
memctl->memc_mar = 0x00000088; /*CAS Latency = 2 and burst length = 4*/
memctl->memc_mcr = (MCR_OP_RUN | MCR_UPM_A | MCR_MB_CS2 | \
MCR_MLCF(1) | MCR_MAD(0x1C));
/* That should do it, just enable the periodic refresh in burst of 4*/
memctl->memc_mamr = CFG_MAMR_48_SDR | MAMR_TLFA_4X;
memctl->memc_mamr |= (MAMR_PTAE | MAMR_GPL_A4DIS);
size_b0 = 16*1024*1024;
/*
* No bank 1 or 3
* invalidate bank
*/
memctl->memc_br1 = 0;
memctl->memc_br3 = 0;
upmconfig(UPMB, (uint *)dsp_disp_table, sizeof(dsp_disp_table)/sizeof(uint));
memctl->memc_mbmr = MBMR_GPL_B4DIS;
memctl->memc_or4 = CFG_OR4;
memctl->memc_br4 = CFG_BR4;
return (size_b0);
}
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