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uboot-mt623x/board/fads/fads.c

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Initial revision
2002-11-03 00:38:21 +00:00
/*
* (C) Copyright 2000
* 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 <config.h>
#include <mpc8xx.h>
#include "fads.h"
/* ------------------------------------------------------------------------- */
#define _NOT_USED_ 0xFFFFFFFF
#if defined(CONFIG_DRAM_50MHZ)
/* 50MHz tables */
const uint dram_60ns[] =
{ 0x8fffec24, 0x0fffec04, 0x0cffec04, 0x00ffec04,
0x00ffec00, 0x37ffec47, 0xffffffff, 0xffffffff,
0x8fffec24, 0x0fffec04, 0x08ffec04, 0x00ffec0c,
0x03ffec00, 0x00ffec44, 0x00ffcc08, 0x0cffcc44,
0x00ffec0c, 0x03ffec00, 0x00ffec44, 0x00ffcc00,
0x3fffc847, 0xffffffff, 0xffffffff, 0xffffffff,
0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x11bfcc47,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x03afcc4c,
0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
0x0cafcc00, 0x33bfcc4f, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xc0ffcc84, 0x00ffcc04, 0x07ffcc04, 0x3fffcc06,
0xffffcc85, 0xffffcc05, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x33ffcc07, 0xffffffff, 0xffffffff, 0xffffffff };
const uint dram_70ns[] =
{ 0x8fffcc24, 0x0fffcc04, 0x0cffcc04, 0x00ffcc04,
0x00ffcc00, 0x37ffcc47, 0xffffffff, 0xffffffff,
0x8fffcc24, 0x0fffcc04, 0x0cffcc04, 0x00ffcc04,
0x00ffcc08, 0x0cffcc44, 0x00ffec0c, 0x03ffec00,
0x00ffec44, 0x00ffcc08, 0x0cffcc44, 0x00ffec04,
0x00ffec00, 0x3fffec47, 0xffffffff, 0xffffffff,
0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x11bfcc47,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x03afcc4c,
0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
0x0cafcc00, 0x33bfcc4f, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xe0ffcc84, 0x00ffcc04, 0x00ffcc04, 0x0fffcc04,
0x7fffcc06, 0xffffcc85, 0xffffcc05, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x33ffcc07, 0xffffffff, 0xffffffff, 0xffffffff };
const uint edo_60ns[] =
{ 0x8ffbec24, 0x0ff3ec04, 0x0cf3ec04, 0x00f3ec04,
0x00f3ec00, 0x37f7ec47, 0xffffffff, 0xffffffff,
0x8fffec24, 0x0ffbec04, 0x0cf3ec04, 0x00f3ec0c,
0x0cf3ec00, 0x00f3ec4c, 0x0cf3ec00, 0x00f3ec4c,
0x0cf3ec00, 0x00f3ec44, 0x03f3ec00, 0x3ff7ec47,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x11bfcc47,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x03afcc4c,
0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
0x0cafcc00, 0x33bfcc4f, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xc0ffcc84, 0x00ffcc04, 0x07ffcc04, 0x3fffcc06,
0xffffcc85, 0xffffcc05, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x33ffcc07, 0xffffffff, 0xffffffff, 0xffffffff };
const uint edo_70ns[] =
{ 0x8ffbcc24, 0x0ff3cc04, 0x0cf3cc04, 0x00f3cc04,
0x00f3cc00, 0x37f7cc47, 0xffffffff, 0xffffffff,
0x8fffcc24, 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc0c,
0x03f3cc00, 0x00f3cc44, 0x00f3ec0c, 0x0cf3ec00,
0x00f3ec4c, 0x03f3ec00, 0x00f3ec44, 0x00f3cc00,
0x33f7cc47, 0xffffffff, 0xffffffff, 0xffffffff,
0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x11bfcc47,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x03afcc4c,
0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c,
0x0cafcc00, 0x33bfcc47, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xe0ffcc84, 0x00ffcc04, 0x00ffcc04, 0x0fffcc04,
0x7fffcc04, 0xffffcc86, 0xffffcc05, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x33ffcc07, 0xffffffff, 0xffffffff, 0xffffffff };
#elif defined(CONFIG_DRAM_25MHZ)
/* 25MHz tables */
const uint dram_60ns[] =
{ 0x0fffcc04, 0x08ffcc00, 0x33ffcc47, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0fffcc24, 0x0fffcc04, 0x08ffcc00, 0x03ffcc4c,
0x08ffcc00, 0x03ffcc4c, 0x08ffcc00, 0x03ffcc4c,
0x08ffcc00, 0x33ffcc47, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0fafcc04, 0x08afcc00, 0x3fbfcc47, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0fafcc04, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
0x01afcc4c, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
0x31bfcc43, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x80ffcc84, 0x13ffcc04, 0xffffcc87, 0xffffcc05,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x33ffcc07, 0xffffffff, 0xffffffff, 0xffffffff };
const uint dram_70ns[] =
{ 0x0fffec04, 0x08ffec04, 0x00ffec00, 0x3fffcc47,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0fffcc24, 0x0fffcc04, 0x08ffcc00, 0x03ffcc4c,
0x08ffcc00, 0x03ffcc4c, 0x08ffcc00, 0x03ffcc4c,
0x08ffcc00, 0x33ffcc47, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0fafcc04, 0x08afcc00, 0x3fbfcc47, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0fafcc04, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
0x01afcc4c, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00,
0x31bfcc43, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xc0ffcc84, 0x01ffcc04, 0x7fffcc86, 0xffffcc05,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x33ffcc07, 0xffffffff, 0xffffffff, 0xffffffff };
const uint edo_60ns[] =
{ 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc00, 0x33f7cc47,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0ffbcc04, 0x09f3cc0c, 0x09f3cc0c, 0x09f3cc0c,
0x08f3cc00, 0x3ff7cc47, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0fefcc04, 0x08afcc04, 0x00afcc00, 0x3fbfcc47,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0fefcc04, 0x08afcc00, 0x07afcc48, 0x08afcc48,
0x08afcc48, 0x39bfcc47, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x80ffcc84, 0x13ffcc04, 0xffffcc87, 0xffffcc05,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x33ffcc07, 0xffffffff, 0xffffffff, 0xffffffff };
const uint edo_70ns[] =
{ 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc00, 0x33f7cc47,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0ffbec04, 0x08f3ec04, 0x03f3ec48, 0x08f3cc00,
0x0ff3cc4c, 0x08f3cc00, 0x0ff3cc4c, 0x08f3cc00,
0x3ff7cc47, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0fefcc04, 0x08afcc04, 0x00afcc00, 0x3fbfcc47,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x0fefcc04, 0x08afcc00, 0x07afcc4c, 0x08afcc00,
0x07afcc4c, 0x08afcc00, 0x07afcc4c, 0x08afcc00,
0x37bfcc47, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xc0ffcc84, 0x01ffcc04, 0x7fffcc86, 0xffffcc05,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0x33ffcc07, 0xffffffff, 0xffffffff, 0xffffffff };
#else
#error dram not correct defined - use CONFIG_DRAM_25MHZ or CONFIG_DRAM_50MHZ
#endif
/* ------------------------------------------------------------------------- */
/*
* Check Board Identity:
*/
int checkboard (void)
{
uint k;
puts ("Board: ");
#ifdef CONFIG_FADS
k = (*((uint *)BCSR3) >> 24) & 0x3f;
switch(k) {
case 0x03 :
case 0x20 :
case 0x21 :
case 0x22 :
case 0x23 :
case 0x24 :
* Patch by Dave Ellis, 22 May 2003: Fix problem with only partially cleared .bss segment * Patch by Rune Torgersen, 12 May 2003: get PCI to work on a MPC8266ADS board; incorporate change to cpu/mpc8260/pci.c to enable overrides of PCI memory parameters
2003-05-22 22:52:13 +00:00
case 0x2a :
Initial revision
2002-11-03 00:38:21 +00:00
case 0x3f :
puts ("FADS");
break;
default :
printf("unknown board (0x%02x)\n", k);
return -1;
}
printf(" with db ");
switch(k) {
case 0x03 :
puts ("MPC823");
break;
case 0x20 :
puts ("MPC801");
break;
case 0x21 :
puts ("MPC850");
break;
case 0x22 :
puts ("MPC821, MPC860 / MPC860SAR / MPC860T");
break;
case 0x23 :
puts ("MPC860SAR");
break;
case 0x24 :
puts ("MPC860T");
break;
case 0x3f :
puts ("MPC850SAR");
break;
}
printf(" rev ");
k = (((*((uint *)BCSR3) >> 23) & 1) << 3)
| (((*((uint *)BCSR3) >> 19) & 1) << 2)
| (((*((uint *)BCSR3) >> 16) & 3));
switch(k) {
case 0x01 :
puts ("ENG or PILOT\n");
break;
default:
printf("unknown (0x%x)\n", k);
return -1;
}
return 0;
#endif /* CONFIG_FADS */
#ifdef CONFIG_ADS
printf("ADS rev ");
k = (((*((uint *)BCSR3) >> 23) & 1) << 3)
| (((*((uint *)BCSR3) >> 19) & 1) << 2)
| (((*((uint *)BCSR3) >> 16) & 3));
switch(k) {
case 0x00 : puts ("ENG - this board sucks, check the errata, not supported\n");
* Code cleanup: - remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen)
2003-06-27 21:31:46 +00:00
return -1;
Initial revision
2002-11-03 00:38:21 +00:00
case 0x01 : puts ("PILOT - warning, read errata \n"); break;
case 0x02 : puts ("A - warning, read errata \n"); break;
case 0x03 : puts ("B \n"); break;
default : printf ("unknown revision (0x%x)\n", k); return -1;
}
return 0;
#endif /* CONFIG_ADS */
}
/* ------------------------------------------------------------------------- */
int _draminit(uint base, uint noMbytes, uint edo, uint delay)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
/* init upm */
switch(delay)
{
case 70:
{
if(edo)
{
upmconfig(UPMA, (uint *) edo_70ns, sizeof(edo_70ns)/sizeof(uint));
}
else
{
upmconfig(UPMA, (uint *) dram_70ns, sizeof(dram_70ns)/sizeof(uint));
}
break;
}
case 60:
{
if(edo)
{
upmconfig(UPMA, (uint *) edo_60ns, sizeof(edo_60ns)/sizeof(uint));
}
else
{
upmconfig(UPMA, (uint *) dram_60ns, sizeof(dram_60ns)/sizeof(uint));
}
break;
}
default :
return -1;
}
memctl->memc_mptpr = 0x0400; /* divide by 16 */
switch(noMbytes)
{
case 8: /* 8 Mbyte uses both CS3 and CS2 */
{
memctl->memc_mamr = 0x13a01114;
memctl->memc_or3 = 0xffc00800;
memctl->memc_br3 = 0x00400081 + base;
memctl->memc_or2 = 0xffc00800;
break;
}
case 4: /* 4 Mbyte uses only CS2 */
{
memctl->memc_mamr = 0x13a01114;
memctl->memc_or2 = 0xffc00800;
break;
}
case 32: /* 32 Mbyte uses both CS3 and CS2 */
{
memctl->memc_mamr = 0x13b01114;
memctl->memc_or3 = 0xff000800;
memctl->memc_br3 = 0x01000081 + base;
memctl->memc_or2 = 0xff000800;
break;
}
case 16: /* 16 Mbyte uses only CS2 */
{
#ifdef CONFIG_ADS
memctl->memc_mamr = 0x60b21114;
#else
memctl->memc_mamr = 0x13b01114;
#endif
memctl->memc_or2 = 0xff000800;
break;
}
default:
return -1;
}
memctl->memc_br2 = 0x81 + base; /* use upma */
return 0;
}
/* ------------------------------------------------------------------------- */
void _dramdisable(void)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
memctl->memc_br2 = 0x00000000;
memctl->memc_br3 = 0x00000000;
/* maybe we should turn off upma here or something */
}
#if defined(CONFIG_SDRAM_100MHZ)
/* ------------------------------------------------------------------------- */
/* sdram table by Dan Malek */
/* This has the stretched early timing so the 50 MHz
* processor can make the 100 MHz timing. This will
* work at all processor speeds.
*/
#define SDRAM_MPTPRVALUE 0x0400
#define SDRAM_MBMRVALUE0 0xc3802114 /* (16-14) 50 MHz */
#define SDRAM_MBMRVALUE1 SDRAM_MBMRVALUE0
#define SDRAM_OR4VALUE 0xffc00a00
#define SDRAM_BR4VALUE 0x000000c1 /* base address will be or:ed on */
#define SDRAM_MARVALUE 0x88
#define SDRAM_MCRVALUE0 0x80808111 /* run pattern 0x11 */
#define SDRAM_MCRVALUE1 SDRAM_MCRVALUE0
const uint sdram_table[] =
{
/* single read. (offset 0 in upm RAM) */
0xefebfc24, 0x1f07fc24, 0xeeaefc04, 0x11adfc04,
0xefbbbc00, 0x1ff77c45, 0xffffffff, 0xffffffff,
/* burst read. (offset 8 in upm RAM) */
0xefebfc24, 0x1f07fc24, 0xeeaefc04, 0x10adfc04,
0xf0affc00, 0xf0affc00, 0xf1affc00, 0xefbbbc00,
0x1ff77c45, 0xeffbbc04, 0x1ff77c34, 0xefeabc34,
0x1fb57c35, 0xffffffff, 0xffffffff, 0xffffffff,
/* single write. (offset 18 in upm RAM) */
0xefebfc24, 0x1f07fc24, 0xeeaebc00, 0x01b93c04,
0x1ff77c45, 0xffffffff, 0xffffffff, 0xffffffff,
/* burst write. (offset 20 in upm RAM) */
0xefebfc24, 0x1f07fc24, 0xeeaebc00, 0x10ad7c00,
0xf0affc00, 0xf0affc00, 0xe1bbbc04, 0x1ff77c45,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
/* refresh. (offset 30 in upm RAM) */
0xeffafc84, 0x1ff5fc04, 0xfffffc04, 0xfffffc04,
0xfffffc84, 0xfffffc07, 0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
/* exception. (offset 3c in upm RAM) */
0xeffffc06, 0x1ffffc07, 0xffffffff, 0xffffffff };
#elif defined(CONFIG_SDRAM_50MHZ)
/* ------------------------------------------------------------------------- */
/* sdram table stolen from the fads manual */
/* for chip MB811171622A-100 */
/* this table is for 32-50MHz operation */
#define _not_used_ 0xffffffff
#define SDRAM_MPTPRVALUE 0x0400
#define SDRAM_MBMRVALUE0 0x80802114 /* refresh at 32MHz */
#define SDRAM_MBMRVALUE1 0x80802118
#define SDRAM_OR4VALUE 0xffc00a00
#define SDRAM_BR4VALUE 0x000000c1 /* base address will be or:ed on */
#define SDRAM_MARVALUE 0x88
#define SDRAM_MCRVALUE0 0x80808105
#define SDRAM_MCRVALUE1 0x80808130
const uint sdram_table[] =
{
/* single read. (offset 0 in upm RAM) */
0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00,
0x1ff77c47,
/* MRS initialization (offset 5) */
0x1ff77c34, 0xefeabc34, 0x1fb57c35,
/* burst read. (offset 8 in upm RAM) */
0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00,
0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47,
_not_used_, _not_used_, _not_used_, _not_used_,
_not_used_, _not_used_, _not_used_, _not_used_,
/* single write. (offset 18 in upm RAM) */
0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47,
_not_used_, _not_used_, _not_used_, _not_used_,
/* burst write. (offset 20 in upm RAM) */
0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
0xf0affc00, 0xe1bbbc04, 0x1ff77c47, _not_used_,
_not_used_, _not_used_, _not_used_, _not_used_,
_not_used_, _not_used_, _not_used_, _not_used_,
/* refresh. (offset 30 in upm RAM) */
0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
0xfffffc84, 0xfffffc07, _not_used_, _not_used_,
_not_used_, _not_used_, _not_used_, _not_used_,
/* exception. (offset 3c in upm RAM) */
0x7ffffc07, _not_used_, _not_used_, _not_used_ };
/* ------------------------------------------------------------------------- */
#else
#error SDRAM not correctly configured
#endif
int _initsdram(uint base, uint noMbytes)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
if(noMbytes != 4)
{
return -1;
}
upmconfig(UPMB, (uint *)sdram_table,sizeof(sdram_table)/sizeof(uint));
memctl->memc_mptpr = SDRAM_MPTPRVALUE;
/* Configure the refresh (mostly). This needs to be
* based upon processor clock speed and optimized to provide
* the highest level of performance. For multiple banks,
* this time has to be divided by the number of banks.
* Although it is not clear anywhere, it appears the
* refresh steps through the chip selects for this UPM
* on each refresh cycle.
* We have to be careful changing
* UPM registers after we ask it to run these commands.
*/
memctl->memc_mbmr = SDRAM_MBMRVALUE0;
memctl->memc_mar = SDRAM_MARVALUE; /* MRS code */
udelay(200);
/* Now run the precharge/nop/mrs commands.
*/
memctl->memc_mcr = 0x80808111; /* run pattern 0x11 */
udelay(200);
/* Run 8 refresh cycles */
memctl->memc_mcr = SDRAM_MCRVALUE0;
udelay(200);
memctl->memc_mbmr = SDRAM_MBMRVALUE1;
memctl->memc_mcr = SDRAM_MCRVALUE1;
udelay(200);
memctl->memc_mbmr = SDRAM_MBMRVALUE0;
memctl->memc_or4 = SDRAM_OR4VALUE;
memctl->memc_br4 = SDRAM_BR4VALUE | base;
return 0;
}
/* ------------------------------------------------------------------------- */
void _sdramdisable(void)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
memctl->memc_br4 = 0x00000000;
/* maybe we should turn off upmb here or something */
}
/* ------------------------------------------------------------------------- */
int initsdram(uint base, uint *noMbytes)
{
uint m = 4;
*((uint *)BCSR1) |= BCSR1_SDRAM_EN; /* enable sdram */
/* _fads_sdraminit needs access to sdram */
*noMbytes = m;
if(!_initsdram(base, m))
{
return 0;
}
else
{
*((uint *)BCSR1) &= ~BCSR1_SDRAM_EN; /* disable sdram */
_sdramdisable();
return -1;
}
}
long int initdram (int board_type)
{
#ifdef CONFIG_ADS
/* ADS: has no SDRAM, so start DRAM at 0 */
uint base = (unsigned long)0x0;
#else
/* FADS: has 4MB SDRAM, put DRAM above it */
uint base = (unsigned long)0x00400000;
#endif
uint k, m, s;
k = (*((uint *)BCSR2) >> 23) & 0x0f;
m = 0;
switch(k & 0x3)
{
/* "MCM36100 / MT8D132X" */
case 0x00 :
m = 4;
break;
/* "MCM36800 / MT16D832X" */
case 0x01 :
m = 32;
break;
/* "MCM36400 / MT8D432X" */
case 0x02 :
m = 16;
break;
/* "MCM36200 / MT16D832X ?" */
case 0x03 :
m = 8;
break;
}
switch(k >> 2)
{
case 0x02 :
k = 70;
break;
case 0x03 :
k = 60;
break;
default :
printf("unknown dramdelay (0x%x) - defaulting to 70 ns", k);
k = 70;
}
#ifdef CONFIG_FADS
/* the FADS is missing this bit, all rams treated as non-edo */
s = 0;
#else
s = (*((uint *)BCSR2) >> 27) & 0x01;
#endif
if(!_draminit(base, m, s, k))
{
#ifdef CONFIG_FADS
uint sdramsz;
#endif
*((uint *)BCSR1) &= ~BCSR1_DRAM_EN; /* enable dram */
#ifdef CONFIG_FADS
if (!initsdram(0x00000000, &sdramsz)) {
m += sdramsz;
printf("(%u MB SDRAM) ", sdramsz);
} else {
_dramdisable();
/********************************
*DRAM ERROR, HALT PROCESSOR
*********************************/
while(1);
return -1;
}
#endif
return (m << 20);
}
else
{
_dramdisable();
/********************************
*DRAM ERROR, HALT PROCESSOR
*********************************/
while(1);
return -1;
}
}
/* ------------------------------------------------------------------------- */
int testdram (void)
{
/* TODO: XXX XXX XXX */
printf ("test: 16 MB - ok\n");
return (0);
}
#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
#ifdef CFG_PCMCIA_MEM_ADDR
volatile unsigned char *pcmcia_mem = (unsigned char*)CFG_PCMCIA_MEM_ADDR;
#endif
int pcmcia_init(void)
{
volatile pcmconf8xx_t *pcmp;
uint v, slota, slotb;
/*
** Enable the PCMCIA for a Flash card.
*/
pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
#if 0
pcmp->pcmc_pbr0 = CFG_PCMCIA_MEM_ADDR;
pcmp->pcmc_por0 = 0xc00ff05d;
#endif
/* Set all slots to zero by default. */
pcmp->pcmc_pgcra = 0;
pcmp->pcmc_pgcrb = 0;
#ifdef PCMCIA_SLOT_A
pcmp->pcmc_pgcra = 0x40;
#endif
#ifdef PCMCIA_SLOT_B
pcmp->pcmc_pgcrb = 0x40;
#endif
/* enable PCMCIA buffers */
*((uint *)BCSR1) &= ~BCSR1_PCCEN;
/* Check if any PCMCIA card is plugged in. */
slota = (pcmp->pcmc_pipr & 0x18000000) == 0 ;
slotb = (pcmp->pcmc_pipr & 0x00001800) == 0 ;
if (!(slota || slotb))
{
printf("No card present\n");
#ifdef PCMCIA_SLOT_A
pcmp->pcmc_pgcra = 0;
#endif
#ifdef PCMCIA_SLOT_B
pcmp->pcmc_pgcrb = 0;
#endif
return -1;
}
else
printf("Card present (");
v = 0;
/* both the ADS and the FADS have a 5V keyed pcmcia connector (?)
**
** Paolo - Yes, but i have to insert some 3.3V card in that slot on
** my FADS... :-)
*/
#if defined(CONFIG_MPC860)
switch( (pcmp->pcmc_pipr >> 30) & 3 )
#elif defined(CONFIG_MPC823) || defined(CONFIG_MPC850)
switch( (pcmp->pcmc_pipr >> 14) & 3 )
#endif
{
case 0x00 :
printf("5V");
v = 5;
break;
case 0x01 :
printf("5V and 3V");
#ifdef CONFIG_FADS
v = 3; /* User lower voltage if supported! */
#else
v = 5;
#endif
break;
case 0x03 :
printf("5V, 3V and x.xV");
#ifdef CONFIG_FADS
v = 3; /* User lower voltage if supported! */
#else
v = 5;
#endif
break;
}
switch(v){
#ifdef CONFIG_FADS
case 3:
printf("; using 3V");
/*
** Enable 3 volt Vcc.
*/
*((uint *)BCSR1) &= ~BCSR1_PCCVCC1;
*((uint *)BCSR1) |= BCSR1_PCCVCC0;
break;
#endif
case 5:
printf("; using 5V");
#ifdef CONFIG_ADS
/*
** Enable 5 volt Vcc.
*/
*((uint *)BCSR1) &= ~BCSR1_PCCVCCON;
#endif
#ifdef CONFIG_FADS
/*
** Enable 5 volt Vcc.
*/
*((uint *)BCSR1) &= ~BCSR1_PCCVCC0;
*((uint *)BCSR1) |= BCSR1_PCCVCC1;
#endif
break;
default:
*((uint *)BCSR1) |= BCSR1_PCCEN; /* disable pcmcia */
printf("; unknown voltage");
return -1;
}
printf(")\n");
/* disable pcmcia reset after a while */
udelay(20);
#ifdef MPC860
pcmp->pcmc_pgcra = 0;
#elif MPC823
pcmp->pcmc_pgcrb = 0;
#endif
/* If you using a real hd you should give a short
* spin-up time. */
#ifdef CONFIG_DISK_SPINUP_TIME
udelay(CONFIG_DISK_SPINUP_TIME);
#endif
return 0;
}
#endif /* CFG_CMD_PCMCIA */
/* ------------------------------------------------------------------------- */
#ifdef CFG_PC_IDE_RESET
void ide_set_reset(int on)
{
volatile immap_t *immr = (immap_t *)CFG_IMMR;
/*
* Configure PC for IDE Reset Pin
*/
if (on) { /* assert RESET */
immr->im_ioport.iop_pcdat &= ~(CFG_PC_IDE_RESET);
} else { /* release RESET */
immr->im_ioport.iop_pcdat |= CFG_PC_IDE_RESET;
}
/* program port pin as GPIO output */
immr->im_ioport.iop_pcpar &= ~(CFG_PC_IDE_RESET);
immr->im_ioport.iop_pcso &= ~(CFG_PC_IDE_RESET);
immr->im_ioport.iop_pcdir |= CFG_PC_IDE_RESET;
}
#endif /* CFG_PC_IDE_RESET */
/* ------------------------------------------------------------------------- */