From fe8c2806cdba70479e351299881a395dc2be7785 Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Sun, 3 Nov 2002 00:38:21 +0000
Subject: Initial revision

---
 board/fads/fads.c | 876 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 876 insertions(+)
 create mode 100644 board/fads/fads.c

(limited to 'board/fads')

diff --git a/board/fads/fads.c b/board/fads/fads.c
new file mode 100644
index 0000000..3b97f51
--- /dev/null
+++ b/board/fads/fads.c
@@ -0,0 +1,876 @@
+/*
+ * (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 :
+	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");
+              return -1;
+  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 */
+/* ------------------------------------------------------------------------- */
-- 
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