Initial revision

1 files changed, 947 insertions, 0 deletions

diff --git a/board/mpl/pip405/pip405.c b/board/mpl/pip405/pip405.c
new file mode 100644
index 0000000..87ca6ef
--- /dev/null
+++ b/board/mpl/pip405/pip405.c
@@ -0,0 +1,947 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch
+ *
+ * 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
+ *
+ *
+ * TODO: clean-up
+ */
+
+#include <common.h>
+#include "pip405.h"
+#include <asm/processor.h>
+#include <i2c.h>
+#include "../common/isa.h"
+#include "../common/common_util.h"
+
+#undef SDRAM_DEBUG
+
+#define FALSE           0
+#define TRUE            1
+
+/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
+#ifndef __ldiv_t_defined
+typedef struct {
+	long int quot;		/* Quotient */
+	long int rem;		/* Remainder    */
+} ldiv_t;
+extern ldiv_t ldiv (long int __numer, long int __denom);
+
+# define __ldiv_t_defined	1
+#endif
+
+
+typedef enum {
+	SDRAM_NO_ERR,
+	SDRAM_SPD_COMM_ERR,
+	SDRAM_SPD_CHKSUM_ERR,
+	SDRAM_UNSUPPORTED_ERR,
+	SDRAM_UNKNOWN_ERR
+} SDRAM_ERR;
+
+typedef struct {
+	const unsigned char mode;
+	const unsigned char row;
+	const unsigned char col;
+	const unsigned char bank;
+} SDRAM_SETUP;
+
+static const SDRAM_SETUP sdram_setup_table[] = {
+	{1, 11, 9, 2},
+	{1, 11, 10, 2},
+	{2, 12, 9, 4},
+	{2, 12, 10, 4},
+	{3, 13, 9, 4},
+	{3, 13, 10, 4},
+	{3, 13, 11, 4},
+	{4, 12, 8, 2},
+	{4, 12, 8, 4},
+	{5, 11, 8, 2},
+	{5, 11, 8, 4},
+	{6, 13, 8, 2},
+	{6, 13, 8, 4},
+	{7, 13, 9, 2},
+	{7, 13, 10, 2},
+	{0, 0, 0, 0}
+};
+
+static const unsigned char cal_indextable[] = {
+	9, 23, 25
+};
+
+
+/*
+ * translate ns.ns/10 coding of SPD timing values
+ * into 10 ps unit values
+ */
+
+unsigned short NS10to10PS (unsigned char spd_byte, unsigned char spd_version)
+{
+	unsigned short ns, ns10;
+
+	/* isolate upper nibble */
+	ns = (spd_byte >> 4) & 0x0F;
+	/* isolate lower nibble */
+	ns10 = (spd_byte & 0x0F);
+
+	return (ns * 100 + ns10 * 10);
+}
+
+/*
+ * translate ns.ns/4 coding of SPD timing values
+ * into 10 ps unit values
+ */
+
+unsigned short NS4to10PS (unsigned char spd_byte, unsigned char spd_version)
+{
+	unsigned short ns, ns4;
+
+	/* isolate upper 6 bits */
+	ns = (spd_byte >> 2) & 0x3F;
+	/* isloate lower 2 bits */
+	ns4 = (spd_byte & 0x03);
+
+	return (ns * 100 + ns4 * 25);
+}
+
+/*
+ * translate ns coding of SPD timing values
+ * into 10 ps unit values
+ */
+
+unsigned short NSto10PS (unsigned char spd_byte)
+{
+	return (spd_byte * 100);
+}
+
+void SDRAM_err (const char *s)
+{
+#ifndef SDRAM_DEBUG
+	DECLARE_GLOBAL_DATA_PTR;
+
+	(void) get_clocks ();
+	gd->baudrate = 9600;
+	serial_init ();
+#endif
+	serial_puts ("\n");
+	serial_puts (s);
+	serial_puts ("\n enable SDRAM_DEBUG for more info\n");
+	for (;;);
+}
+
+
+#ifdef SDRAM_DEBUG
+
+void write_hex (unsigned char i)
+{
+	char cc;
+
+	cc = i >> 4;
+	cc &= 0xf;
+	if (cc > 9)
+		serial_putc (cc + 55);
+	else
+		serial_putc (cc + 48);
+	cc = i & 0xf;
+	if (cc > 9)
+		serial_putc (cc + 55);
+	else
+		serial_putc (cc + 48);
+}
+
+void write_4hex (unsigned long val)
+{
+	write_hex ((unsigned char) (val >> 24));
+	write_hex ((unsigned char) (val >> 16));
+	write_hex ((unsigned char) (val >> 8));
+	write_hex ((unsigned char) val);
+}
+
+#endif
+
+int board_pre_init (void)
+{
+	unsigned char dataout[1];
+	unsigned char datain[128];
+	unsigned long sdram_size;
+	SDRAM_SETUP *t = (SDRAM_SETUP *) sdram_setup_table;
+	unsigned long memclk;
+	unsigned long tmemclk = 0;
+	unsigned long tmp, bank, baseaddr, bank_size;
+	unsigned short i;
+	unsigned char rows, cols, banks, sdram_banks, density;
+	unsigned char supported_cal, trp_clocks, trcd_clocks, tras_clocks,
+			trc_clocks, tctp_clocks;
+	unsigned char cal_index, cal_val, spd_version, spd_chksum;
+	unsigned char buf[8];
+#ifdef SDRAM_DEBUG
+	DECLARE_GLOBAL_DATA_PTR;
+#endif
+
+	memclk = get_bus_freq (tmemclk);
+	tmemclk = 1000000000 / (memclk / 100);	/* in 10 ps units */
+
+#ifdef SDRAM_DEBUG
+	(void) get_clocks ();
+	gd->baudrate = 9600;
+	serial_init ();
+	serial_puts ("\nstart SDRAM Setup\n");
+#endif
+
+	/* Read Serial Presence Detect Information */
+	i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+	dataout[0] = 0;
+	for (i = 0; i < 128; i++)
+		datain[i] = 127;
+	i2c_read(SPD_EEPROM_ADDRESS,0,1,datain,128);
+#ifdef SDRAM_DEBUG
+	serial_puts ("\ni2c_read returns ");
+	write_hex (i);
+	serial_puts ("\n");
+#endif
+
+#ifdef SDRAM_DEBUG
+	for (i = 0; i < 128; i++) {
+		write_hex (datain[i]);
+		serial_puts (" ");
+		if (((i + 1) % 16) == 0)
+			serial_puts ("\n");
+	}
+	serial_puts ("\n");
+#endif
+	spd_chksum = 0;
+	for (i = 0; i < 63; i++) {
+		spd_chksum += datain[i];
+	}							/* endfor */
+	if (datain[63] != spd_chksum) {
+#ifdef SDRAM_DEBUG
+		serial_puts ("SPD chksum: 0x");
+		write_hex (datain[63]);
+		serial_puts (" != calc. chksum: 0x");
+		write_hex (spd_chksum);
+		serial_puts ("\n");
+#endif
+		SDRAM_err ("SPD checksum Error");
+	}
+	/* SPD seems to be ok, use it */
+
+	/* get SPD version */
+	spd_version = datain[62];
+
+	/* do some sanity checks on the kind of RAM */
+	if ((datain[0] < 0x80) ||	/* less than 128 valid bytes in SPD */
+		(datain[2] != 0x04) ||	/* if not SDRAM */
+		(!((datain[6] == 0x40) || (datain[6] == 0x48))) ||	/* or not (64 Bit or 72 Bit)  */
+		(datain[7] != 0x00) || (datain[8] != 0x01) ||	/* or not LVTTL signal levels */
+		(datain[126] == 0x66))	/* or a 66Mhz modules */
+		SDRAM_err ("unsupported SDRAM");
+#ifdef SDRAM_DEBUG
+	serial_puts ("SDRAM sanity ok\n");
+#endif
+
+	/* get number of rows/cols/banks out of byte 3+4+5 */
+	rows = datain[3];
+	cols = datain[4];
+	banks = datain[5];
+
+	/* get number of SDRAM banks out of byte 17 and
+	   supported CAS latencies out of byte 18 */
+	sdram_banks = datain[17];
+	supported_cal = datain[18] & ~0x81;
+
+	while (t->mode != 0) {
+		if ((t->row == rows) && (t->col == cols)
+			&& (t->bank == sdram_banks))
+			break;
+		t++;
+	}							/* endwhile */
+
+#ifdef SDRAM_DEBUG
+	serial_puts ("rows: ");
+	write_hex (rows);
+	serial_puts (" cols: ");
+	write_hex (cols);
+	serial_puts (" banks: ");
+	write_hex (banks);
+	serial_puts (" mode: ");
+	write_hex (t->mode);
+	serial_puts ("\n");
+#endif
+	if (t->mode == 0)
+		SDRAM_err ("unsupported SDRAM");
+	/* get tRP, tRCD, tRAS and density from byte 27+29+30+31 */
+#ifdef SDRAM_DEBUG
+	serial_puts ("tRP: ");
+	write_hex (datain[27]);
+	serial_puts ("\ntRCD: ");
+	write_hex (datain[29]);
+	serial_puts ("\ntRAS: ");
+	write_hex (datain[30]);
+	serial_puts ("\n");
+#endif
+
+	trp_clocks = (NSto10PS (datain[27]) + (tmemclk - 1)) / tmemclk;
+	trcd_clocks = (NSto10PS (datain[29]) + (tmemclk - 1)) / tmemclk;
+	tras_clocks = (NSto10PS (datain[30]) + (tmemclk - 1)) / tmemclk;
+	density = datain[31];
+
+	/* trc_clocks is sum of trp_clocks + tras_clocks */
+	trc_clocks = trp_clocks + tras_clocks;
+	/* ctp = ((trp + tras) - trp - trcd) => tras - trcd */
+	tctp_clocks =
+			((NSto10PS (datain[30]) - NSto10PS (datain[29])) +
+			 (tmemclk - 1)) / tmemclk;
+
+#ifdef SDRAM_DEBUG
+	serial_puts ("c_RP: ");
+	write_hex (trp_clocks);
+	serial_puts ("\nc_RCD: ");
+	write_hex (trcd_clocks);
+	serial_puts ("\nc_RAS: ");
+	write_hex (tras_clocks);
+	serial_puts ("\nc_RC: (RP+RAS): ");
+	write_hex (trc_clocks);
+	serial_puts ("\nc_CTP: ((RP+RAS)-RP-RCD): ");
+	write_hex (tctp_clocks);
+	serial_puts ("\nt_CTP: RAS - RCD: ");
+	write_hex ((unsigned
+				char) ((NSto10PS (datain[30]) -
+						NSto10PS (datain[29])) >> 8));
+	write_hex ((unsigned char) (NSto10PS (datain[30]) - NSto10PS (datain[29])));
+	serial_puts ("\ntmemclk: ");
+	write_hex ((unsigned char) (tmemclk >> 8));
+	write_hex ((unsigned char) (tmemclk));
+	serial_puts ("\n");
+#endif
+
+
+	cal_val = 255;
+	for (i = 6, cal_index = 0; (i > 0) && (cal_index < 3); i--) {
+		/* is this CAS latency supported ? */
+		if ((supported_cal >> i) & 0x01) {
+			buf[0] = datain[cal_indextable[cal_index]];
+			if (cal_index < 2) {
+				if (NS10to10PS (buf[0], spd_version) <= tmemclk)
+					cal_val = i;
+			} else {
+				/* SPD bytes 25+26 have another format */
+				if (NS4to10PS (buf[0], spd_version) <= tmemclk)
+					cal_val = i;
+			}	/* endif */
+			cal_index++;
+		}	/* endif */
+	}	/* endfor */
+#ifdef SDRAM_DEBUG
+	serial_puts ("CAL: ");
+	write_hex (cal_val + 1);
+	serial_puts ("\n");
+#endif
+
+	if (cal_val == 255)
+		SDRAM_err ("unsupported SDRAM");
+
+	/* get SDRAM timing register */
+	mtdcr (memcfga, mem_sdtr1);
+	tmp = mfdcr (memcfgd) & ~0x018FC01F;
+	/* insert CASL value */
+/*  tmp |= ((unsigned long)cal_val) << 23; */
+	tmp |= ((unsigned long) cal_val) << 23;
+	/* insert PTA value */
+	tmp |= ((unsigned long) (trp_clocks - 1)) << 18;
+	/* insert CTP value */
+/*  tmp |= ((unsigned long)(trc_clocks - trp_clocks - trcd_clocks - 1)) << 16; */
+	tmp |= ((unsigned long) (trc_clocks - trp_clocks - trcd_clocks)) << 16;
+	/* insert LDF (always 01) */
+	tmp |= ((unsigned long) 0x01) << 14;
+	/* insert RFTA value */
+	tmp |= ((unsigned long) (trc_clocks - 4)) << 2;
+	/* insert RCD value */
+	tmp |= ((unsigned long) (trcd_clocks - 1)) << 0;
+
+#ifdef SDRAM_DEBUG
+	serial_puts ("sdtr: ");
+	write_4hex (tmp);
+	serial_puts ("\n");
+#endif
+
+	/* write SDRAM timing register */
+	mtdcr (memcfga, mem_sdtr1);
+	mtdcr (memcfgd, tmp);
+	baseaddr = CFG_SDRAM_BASE;
+	bank_size = (((unsigned long) density) << 22) / 2;
+	/* insert AM value */
+	tmp = ((unsigned long) t->mode - 1) << 13;
+	/* insert SZ value; */
+	switch (bank_size) {
+	case 0x00400000:
+		tmp |= ((unsigned long) 0x00) << 17;
+		break;
+	case 0x00800000:
+		tmp |= ((unsigned long) 0x01) << 17;
+		break;
+	case 0x01000000:
+		tmp |= ((unsigned long) 0x02) << 17;
+		break;
+	case 0x02000000:
+		tmp |= ((unsigned long) 0x03) << 17;
+		break;
+	case 0x04000000:
+		tmp |= ((unsigned long) 0x04) << 17;
+		break;
+	case 0x08000000:
+		tmp |= ((unsigned long) 0x05) << 17;
+		break;
+	case 0x10000000:
+		tmp |= ((unsigned long) 0x06) << 17;
+		break;
+	default:
+		SDRAM_err ("unsupported SDRAM");
+	}	/* endswitch */
+	/* get SDRAM bank 0 register */
+	mtdcr (memcfga, mem_mb0cf);
+	bank = mfdcr (memcfgd) & ~0xFFCEE001;
+	bank |= (baseaddr | tmp | 0x01);
+#ifdef SDRAM_DEBUG
+	serial_puts ("bank0: baseaddr: ");
+	write_4hex (baseaddr);
+	serial_puts (" banksize: ");
+	write_4hex (bank_size);
+	serial_puts (" mb0cf: ");
+	write_4hex (bank);
+	serial_puts ("\n");
+#endif
+	baseaddr += bank_size;
+	sdram_size += bank_size;
+
+	/* write SDRAM bank 0 register */
+	mtdcr (memcfga, mem_mb0cf);
+	mtdcr (memcfgd, bank);
+
+	/* get SDRAM bank 1 register */
+	mtdcr (memcfga, mem_mb1cf);
+	bank = mfdcr (memcfgd) & ~0xFFCEE001;
+	sdram_size = 0;
+
+#ifdef SDRAM_DEBUG
+	serial_puts ("bank1: baseaddr: ");
+	write_4hex (baseaddr);
+	serial_puts (" banksize: ");
+	write_4hex (bank_size);
+#endif
+	if (banks == 2) {
+		bank |= (baseaddr | tmp | 0x01);
+		baseaddr += bank_size;
+		sdram_size += bank_size;
+	}	/* endif */
+#ifdef SDRAM_DEBUG
+	serial_puts (" mb1cf: ");
+	write_4hex (bank);
+	serial_puts ("\n");
+#endif
+	/* write SDRAM bank 1 register */
+	mtdcr (memcfga, mem_mb1cf);
+	mtdcr (memcfgd, bank);
+
+	/* get SDRAM bank 2 register */
+	mtdcr (memcfga, mem_mb2cf);
+	bank = mfdcr (memcfgd) & ~0xFFCEE001;
+
+	bank |= (baseaddr | tmp | 0x01);
+
+#ifdef SDRAM_DEBUG
+	serial_puts ("bank2: baseaddr: ");
+	write_4hex (baseaddr);
+	serial_puts (" banksize: ");
+	write_4hex (bank_size);
+	serial_puts (" mb2cf: ");
+	write_4hex (bank);
+	serial_puts ("\n");
+#endif
+
+	baseaddr += bank_size;
+	sdram_size += bank_size;
+
+	/* write SDRAM bank 2 register */
+	mtdcr (memcfga, mem_mb2cf);
+	mtdcr (memcfgd, bank);
+
+	/* get SDRAM bank 3 register */
+	mtdcr (memcfga, mem_mb3cf);
+	bank = mfdcr (memcfgd) & ~0xFFCEE001;
+
+#ifdef SDRAM_DEBUG
+	serial_puts ("bank3: baseaddr: ");
+	write_4hex (baseaddr);
+	serial_puts (" banksize: ");
+	write_4hex (bank_size);
+#endif
+
+	if (banks == 2) {
+		bank |= (baseaddr | tmp | 0x01);
+		baseaddr += bank_size;
+		sdram_size += bank_size;
+	}
+	/* endif */
+#ifdef SDRAM_DEBUG
+	serial_puts (" mb3cf: ");
+	write_4hex (bank);
+	serial_puts ("\n");
+#endif
+
+	/* write SDRAM bank 3 register */
+	mtdcr (memcfga, mem_mb3cf);
+	mtdcr (memcfgd, bank);
+
+
+	/* get SDRAM refresh interval register */
+	mtdcr (memcfga, mem_rtr);
+	tmp = mfdcr (memcfgd) & ~0x3FF80000;
+
+	if (tmemclk < NSto10PS (16))
+		tmp |= 0x05F00000;
+	else
+		tmp |= 0x03F80000;
+
+	/* write SDRAM refresh interval register */
+	mtdcr (memcfga, mem_rtr);
+	mtdcr (memcfgd, tmp);
+
+	/* enable SDRAM controller with no ECC, 32-bit SDRAM width, 16 byte burst */
+	mtdcr (memcfga, mem_mcopt1);
+	tmp = (mfdcr (memcfgd) & ~0xFFE00000) | 0x80E00000;
+	mtdcr (memcfga, mem_mcopt1);
+	mtdcr (memcfgd, tmp);
+
+
+
+   /*-------------------------------------------------------------------------+
+   | Interrupt controller setup for the PIP405 board.
+   | Note: IRQ 0-15  405GP internally generated; active high; level sensitive
+   |       IRQ 16    405GP internally generated; active low; level sensitive
+   |       IRQ 17-24 RESERVED
+   |       IRQ 25 (EXT IRQ 0) SouthBridg; active low; level sensitive
+   |       IRQ 26 (EXT IRQ 1) NMI: active low; level sensitive
+   |       IRQ 27 (EXT IRQ 2) SMI: active Low; level sensitive
+   |       IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive
+   |       IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
+   |       IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive
+   |       IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive
+   | Note for PIP405 board:
+   |       An interrupt taken for the SouthBridge (IRQ 25) indicates that
+   |       the Interrupt Controller in the South Bridge has caused the
+   |       interrupt. The IC must be read to determine which device
+   |       caused the interrupt.
+   |
+   +-------------------------------------------------------------------------*/
+	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
+	mtdcr (uicer, 0x00000000);	/* disable all ints */
+	mtdcr (uiccr, 0x00000000);	/* set all to be non-critical (for now) */
+	mtdcr (uicpr, 0xFFFFFF80);	/* set int polarities */
+	mtdcr (uictr, 0x10000000);	/* set int trigger levels */
+	mtdcr (uicvcr, 0x00000001);	/* set vect base=0,INT0 highest priority */
+	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
+
+	return 0;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Check Board Identity:
+ */
+
+int checkboard (void)
+{
+	unsigned char s[50];
+	unsigned char bc;
+	int i;
+	backup_t *b = (backup_t *) s;
+
+	puts ("Board: ");
+
+	i = getenv_r ("serial#", s, 32);
+	if ((i == 0) || strncmp (s, "PIP405", 6)) {
+		get_backup_values (b);
+		if (strncmp (b->signature, "MPL\0", 4) != 0) {
+			puts ("### No HW ID - assuming PIP405");
+		} else {
+			b->serial_name[6] = 0;
+			printf ("%s SN: %s", b->serial_name,
+				&b->serial_name[7]);
+		}
+	} else {
+		s[6] = 0;
+		printf ("%s SN: %s", s, &s[7]);
+	}
+	bc = in8 (CONFIG_PORT_ADDR);
+	printf (" Boot Config: 0x%x\n", bc);
+	return (0);
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* ------------------------------------------------------------------------- */
+/*
+  initdram(int board_type) reads EEPROM via I2c. EEPROM contains all of
+  the necessary info for SDRAM controller configuration
+*/
+/* ------------------------------------------------------------------------- */
+/* ------------------------------------------------------------------------- */
+static int test_dram (unsigned long ramsize);
+
+long int initdram (int board_type)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	unsigned long bank_reg[4], tmp, bank_size;
+	int i, ds;
+	unsigned long TotalSize;
+
+	ds = 0;
+	/* since the DRAM controller is allready set up,
+	 * calculate the size with the bank registers
+	 */
+	mtdcr (memcfga, mem_mb0cf);
+	bank_reg[0] = mfdcr (memcfgd);
+	mtdcr (memcfga, mem_mb1cf);
+	bank_reg[1] = mfdcr (memcfgd);
+	mtdcr (memcfga, mem_mb2cf);
+	bank_reg[2] = mfdcr (memcfgd);
+	mtdcr (memcfga, mem_mb3cf);
+	bank_reg[3] = mfdcr (memcfgd);
+	TotalSize = 0;
+	for (i = 0; i < 4; i++) {
+		if ((bank_reg[i] & 0x1) == 0x1) {
+			tmp = (bank_reg[i] >> 17) & 0x7;
+			bank_size = 4 << tmp;
+			TotalSize += bank_size;
+		} else
+			ds = 1;
+	}
+	if (ds == 1)
+		printf ("single-sided DIMM ");
+	else
+		printf ("double-sided DIMM ");
+	test_dram (TotalSize * 1024 * 1024);
+	/* bank 2 (SDRAM Clock 2) is not usable if 133MHz SDRAM IF */
+	(void) get_clocks();
+	if (gd->cpu_clk > 220000000)
+		TotalSize /= 2;
+	return (TotalSize * 1024 * 1024);
+}
+
+/* ------------------------------------------------------------------------- */
+
+
+static int test_dram (unsigned long ramsize)
+{
+	/* not yet implemented */
+	return (1);
+}
+
+
+int misc_init_r (void)
+{
+	return (0);
+}
+
+/***************************************************************************
+ * some helping routines
+ */
+
+int overwrite_console (void)
+{
+	return (in8 (CONFIG_PORT_ADDR) & 0x1);	/* return TRUE if console should be overwritten */
+}
+
+
+
+extern int isa_init (void);
+
+
+void print_pip405_rev (void)
+{
+	unsigned char part, vers, cfg;
+
+	part = in8 (PLD_PART_REG);
+	vers = in8 (PLD_VERS_REG);
+	cfg = in8 (PLD_BOARD_CFG_REG);
+	printf ("Rev:   PIP405-%d Rev %c PLD%d %d PLD%d %d\n",
+			16 - ((cfg >> 4) & 0xf), (cfg & 0xf) + 'A', part & 0xf,
+			vers & 0xf, (part >> 4) & 0xf, (vers >> 4) & 0xf);
+}
+
+extern void check_env(void);
+
+
+int last_stage_init (void)
+{
+	print_pip405_rev ();
+	isa_init ();
+	show_stdio_dev ();
+	check_env();
+	return 0;
+}
+
+/************************************************************************
+* Print PIP405 Info
+************************************************************************/
+void print_pip405_info (void)
+{
+	unsigned char part, vers, cfg, ledu, sysman, flashcom, can, serpwr,
+			compwr, nicvga, scsirst;
+
+	part = in8 (PLD_PART_REG);
+	vers = in8 (PLD_VERS_REG);
+	cfg = in8 (PLD_BOARD_CFG_REG);
+	ledu = in8 (PLD_LED_USER_REG);
+	sysman = in8 (PLD_SYS_MAN_REG);
+	flashcom = in8 (PLD_FLASH_COM_REG);
+	can = in8 (PLD_CAN_REG);
+	serpwr = in8 (PLD_SER_PWR_REG);
+	compwr = in8 (PLD_COM_PWR_REG);
+	nicvga = in8 (PLD_NIC_VGA_REG);
+	scsirst = in8 (PLD_SCSI_RST_REG);
+	printf ("PLD Part %d version %d\n",
+		part & 0xf, vers & 0xf);
+	printf ("PLD Part %d version %d\n",
+		(part >> 4) & 0xf, (vers >> 4) & 0xf);
+	printf ("Board Revision %c\n", (cfg & 0xf) + 'A');
+	printf ("Population Options %d %d %d %d\n",
+		(cfg >> 4) & 0x1, (cfg >> 5) & 0x1,
+		(cfg >> 6) & 0x1, (cfg >> 7) & 0x1);
+	printf ("User LED0 %s User LED1 %s\n",
+		((ledu & 0x1) == 0x1) ? "on" : "off",
+		((ledu & 0x2) == 0x2) ? "on" : "off");
+	printf ("Additionally Options %d %d\n",
+		(ledu >> 2) & 0x1, (ledu >> 3) & 0x1);
+	printf ("User Config Switch %d %d %d %d\n",
+		(ledu >> 4) & 0x1, (ledu >> 5) & 0x1,
+		(ledu >> 6) & 0x1, (ledu >> 7) & 0x1);
+	switch (sysman & 0x3) {
+	case 0:
+		printf ("PCI Clocks are running\n");
+		break;
+	case 1:
+		printf ("PCI Clocks are stopped in POS State\n");
+		break;
+	case 2:
+		printf ("PCI Clocks are stopped when PCI_STP# is asserted\n");
+		break;
+	case 3:
+		printf ("PCI Clocks are stopped\n");
+		break;
+	}
+	switch ((sysman >> 2) & 0x3) {
+	case 0:
+		printf ("Main Clocks are running\n");
+		break;
+	case 1:
+		printf ("Main Clocks are stopped in POS State\n");
+		break;
+	case 2:
+	case 3:
+		printf ("PCI Clocks are stopped\n");
+		break;
+	}
+	printf ("INIT asserts %sINT2# (SMI)\n",
+			((sysman & 0x10) == 0x10) ? "" : "not ");
+	printf ("INIT asserts %sINT1# (NMI)\n",
+			((sysman & 0x20) == 0x20) ? "" : "not ");
+	printf ("INIT occured %d\n", (sysman >> 6) & 0x1);
+	printf ("SER1 is routed to %s\n",
+			((flashcom & 0x1) == 0x1) ? "RS485" : "RS232");
+	printf ("COM2 is routed to %s\n",
+			((flashcom & 0x2) == 0x2) ? "RS485" : "RS232");
+	printf ("RS485 is configured as %s duplex\n",
+			((flashcom & 0x4) == 0x4) ? "full" : "half");
+	printf ("RS485 is connected to %s\n",
+			((flashcom & 0x8) == 0x8) ? "COM1" : "COM2");
+	printf ("SER1 uses handshakes %s\n",
+			((flashcom & 0x10) == 0x10) ? "DTR/DSR" : "RTS/CTS");
+	printf ("Bootflash is %swriteprotected\n",
+			((flashcom & 0x20) == 0x20) ? "not " : "");
+	printf ("Bootflash VPP is %s\n",
+			((flashcom & 0x40) == 0x40) ? "on" : "off");
+	printf ("Bootsector is %swriteprotected\n",
+			((flashcom & 0x80) == 0x80) ? "not " : "");
+	switch ((can) & 0x3) {
+	case 0:
+		printf ("CAN Controller is on address 0x1000..0x10FF\n");
+		break;
+	case 1:
+		printf ("CAN Controller is on address 0x8000..0x80FF\n");
+		break;
+	case 2:
+		printf ("CAN Controller is on address 0xE000..0xE0FF\n");
+		break;
+	case 3:
+		printf ("CAN Controller is disabled\n");
+		break;
+	}
+	switch ((can >> 2) & 0x3) {
+	case 0:
+		printf ("CAN Controller Reset is ISA Reset\n");
+		break;
+	case 1:
+		printf ("CAN Controller Reset is ISA Reset and POS State\n");
+		break;
+	case 2:
+	case 3:
+		printf ("CAN Controller is in reset\n");
+		break;
+	}
+	if (((can >> 4) < 3) || ((can >> 4) == 8) || ((can >> 4) == 13))
+		printf ("CAN Interrupt is disabled\n");
+	else
+		printf ("CAN Interrupt is ISA INT%d\n", (can >> 4) & 0xf);
+	switch (serpwr & 0x3) {
+	case 0:
+		printf ("SER0 Drivers are enabled\n");
+		break;
+	case 1:
+		printf ("SER0 Drivers are disabled in the POS state\n");
+		break;
+	case 2:
+	case 3:
+		printf ("SER0 Drivers are disabled\n");
+		break;
+	}
+	switch ((serpwr >> 2) & 0x3) {
+	case 0:
+		printf ("SER1 Drivers are enabled\n");
+		break;
+	case 1:
+		printf ("SER1 Drivers are disabled in the POS state\n");
+		break;
+	case 2:
+	case 3:
+		printf ("SER1 Drivers are disabled\n");
+		break;
+	}
+	switch (compwr & 0x3) {
+	case 0:
+		printf ("COM1 Drivers are enabled\n");
+		break;
+	case 1:
+		printf ("COM1 Drivers are disabled in the POS state\n");
+		break;
+	case 2:
+	case 3:
+		printf ("COM1 Drivers are disabled\n");
+		break;
+	}
+	switch ((compwr >> 2) & 0x3) {
+	case 0:
+		printf ("COM2 Drivers are enabled\n");
+		break;
+	case 1:
+		printf ("COM2 Drivers are disabled in the POS state\n");
+		break;
+	case 2:
+	case 3:
+		printf ("COM2 Drivers are disabled\n");
+		break;
+	}
+	switch ((nicvga) & 0x3) {
+	case 0:
+		printf ("PHY is running\n");
+		break;
+	case 1:
+		printf ("PHY is in Power save mode in POS state\n");
+		break;
+	case 2:
+	case 3:
+		printf ("PHY is in Power save mode\n");
+		break;
+	}
+	switch ((nicvga >> 2) & 0x3) {
+	case 0:
+		printf ("VGA is running\n");
+		break;
+	case 1:
+		printf ("VGA is in Power save mode in POS state\n");
+		break;
+	case 2:
+	case 3:
+		printf ("VGA is in Power save mode\n");
+		break;
+	}
+	printf ("PHY is %sreseted\n", ((nicvga & 0x10) == 0x10) ? "" : "not ");
+	printf ("VGA is %sreseted\n", ((nicvga & 0x20) == 0x20) ? "" : "not ");
+	printf ("Reserved Configuration is %d %d\n", (nicvga >> 6) & 0x1,
+			(nicvga >> 7) & 0x1);
+	switch ((scsirst) & 0x3) {
+	case 0:
+		printf ("SCSI Controller is running\n");
+		break;
+	case 1:
+		printf ("SCSI Controller is in Power save mode in POS state\n");
+		break;
+	case 2:
+	case 3:
+		printf ("SCSI Controller is in Power save mode\n");
+		break;
+	}
+	printf ("SCSI termination is %s\n",
+			((scsirst & 0x4) == 0x4) ? "disabled" : "enabled");
+	printf ("SCSI Controller is %sreseted\n",
+			((scsirst & 0x10) == 0x10) ? "" : "not ");
+	printf ("IDE disks are %sreseted\n",
+			((scsirst & 0x20) == 0x20) ? "" : "not ");
+	printf ("ISA Bus is %sreseted\n",
+			((scsirst & 0x40) == 0x40) ? "" : "not ");
+	printf ("Super IO is %sreseted\n",
+			((scsirst & 0x80) == 0x80) ? "" : "not ");
+}
+
+void user_led0 (unsigned char on)
+{
+	if (on == TRUE)
+		out8 (PLD_LED_USER_REG, (in8 (PLD_LED_USER_REG) | 0x1));
+	else
+		out8 (PLD_LED_USER_REG, (in8 (PLD_LED_USER_REG) & 0xfe));
+}
+
+void user_led1 (unsigned char on)
+{
+	if (on == TRUE)
+		out8 (PLD_LED_USER_REG, (in8 (PLD_LED_USER_REG) | 0x2));
+	else
+		out8 (PLD_LED_USER_REG, (in8 (PLD_LED_USER_REG) & 0xfd));
+}
+
+void ide_set_reset (int idereset)
+{
+	/* if reset = 1 IDE reset will be asserted */
+	unsigned char resreg;
+
+	resreg = in8 (PLD_SCSI_RST_REG);
+	if (idereset == 1)
+		resreg |= 0x20;
+	else {
+		udelay(10000);
+		resreg &= 0xdf;
+	}
+	out8 (PLD_SCSI_RST_REG, resreg);
+}
+
+