Prepare for 0.3.0 release

* Add support for Purple Board (MIPS64 5Kc)

* Add support for MIPS64 5Kc CPUs

8 files changed, 1147 insertions, 0 deletions

diff --git a/board/purple/Makefile b/board/purple/Makefile
new file mode 100644
index 0000000..d1b0056
--- /dev/null
+++ b/board/purple/Makefile
@@ -0,0 +1,41 @@
+#
+# (C) Copyright 2003
+# 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 $(TOPDIR)/config.mk
+
+LIB	= lib$(BOARD).a
+
+OBJS	= $(BOARD).o flash.o sconsole.o
+SOBJS	= memsetup.o
+
+$(LIB):	.depend $(OBJS) $(SOBJS)
+	$(AR) crv $@ $^
+
+#########################################################################
+
+.depend:	Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/board/purple/config.mk b/board/purple/config.mk
new file mode 100644
index 0000000..ea478ed
--- /dev/null
+++ b/board/purple/config.mk
@@ -0,0 +1,32 @@
+#
+# (C) Copyright 2003
+# 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
+#
+
+#
+# Purple board with MIPS 5Kc CPU core
+#
+
+# ROM version
+TEXT_BASE = 0xB0000000
+
+# RAM version
+#TEXT_BASE = 0x80100000
diff --git a/board/purple/flash.c b/board/purple/flash.c
new file mode 100644
index 0000000..56d3acd
--- /dev/null
+++ b/board/purple/flash.c
@@ -0,0 +1,596 @@
+/*
+ * (C) Copyright 2003
+ * 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 <asm/inca-ip.h>
+
+flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
+
+typedef unsigned long FLASH_PORT_WIDTH;
+typedef volatile unsigned long FLASH_PORT_WIDTHV;
+
+#define	FLASH_ID_MASK	0xFFFFFFFF
+
+#define FPW	FLASH_PORT_WIDTH
+#define FPWV	FLASH_PORT_WIDTHV
+
+#define ORMASK(size) ((-size) & OR_AM_MSK)
+
+#define FLASH29_REG_ADRS(reg) ((FPWV *)PHYS_FLASH_1 + (reg))
+
+/* FLASH29 command register addresses */
+
+#define FLASH29_REG_FIRST_CYCLE		FLASH29_REG_ADRS (0x1555)
+#define FLASH29_REG_SECOND_CYCLE	FLASH29_REG_ADRS (0x2aaa)
+#define FLASH29_REG_THIRD_CYCLE		FLASH29_REG_ADRS (0x3555)	
+#define	FLASH29_REG_FOURTH_CYCLE	FLASH29_REG_ADRS (0x4555)
+#define	FLASH29_REG_FIFTH_CYCLE		FLASH29_REG_ADRS (0x5aaa)
+#define	FLASH29_REG_SIXTH_CYCLE		FLASH29_REG_ADRS (0x6555)
+
+/* FLASH29 command definitions */
+
+#define	FLASH29_CMD_FIRST		0xaaaaaaaa
+#define	FLASH29_CMD_SECOND		0x55555555
+#define	FLASH29_CMD_FOURTH		0xaaaaaaaa
+#define	FLASH29_CMD_FIFTH		0x55555555
+#define	FLASH29_CMD_SIXTH		0x10101010
+
+#define	FLASH29_CMD_SECTOR		0x30303030
+#define	FLASH29_CMD_PROGRAM		0xa0a0a0a0
+#define	FLASH29_CMD_CHIP_ERASE		0x80808080
+#define	FLASH29_CMD_READ_RESET		0xf0f0f0f0
+#define	FLASH29_CMD_AUTOSELECT		0x90909090
+#define FLASH29_CMD_READ		0x70707070	
+
+#define IN_RAM_CMD_READ		0x1
+#define IN_RAM_CMD_WRITE	0x2
+
+#define FLASH_WRITE_CMD	((ulong)(flash_write_cmd) & 0x7)+0xbf008000
+#define FLASH_READ_CMD  ((ulong)(flash_read_cmd) & 0x7)+0xbf008000
+
+typedef void (*FUNCPTR_CP)(ulong *source, ulong *destination, ulong nlongs);
+typedef void (*FUNCPTR_RD)(int cmd, FPWV * pFA, char * string, int strLen);
+typedef void (*FUNCPTR_WR)(int cmd, FPWV * pFA, FPW value);
+
+static ulong flash_get_size(FPWV *addr, flash_info_t *info);
+static int write_word(flash_info_t *info, FPWV *dest, FPW data);
+static void flash_get_offsets(ulong base, flash_info_t *info);
+static flash_info_t *flash_get_info(ulong base);
+
+static void load_cmd(ulong cmd);
+static ulong in_ram_cmd = 0;
+
+
+/******************************************************************************
+*
+* Don't change the program architecture
+* This architecture assure the program
+* can be relocated to scratch ram
+*/
+static void flash_read_cmd(int cmd, FPWV * pFA, char * string, int strLen)
+{					
+	int i,j;
+	FPW temp,temp1;	
+	FPWV *str;
+
+	str = (FPWV *)string;
+
+	j=  strLen/4;
+	
+	if(cmd == FLASH29_CMD_AUTOSELECT)
+	   {
+            *(FLASH29_REG_FIRST_CYCLE)  = FLASH29_CMD_FIRST;
+            *(FLASH29_REG_SECOND_CYCLE) = FLASH29_CMD_SECOND;
+            *(FLASH29_REG_THIRD_CYCLE)  = FLASH29_CMD_AUTOSELECT;
+           }
+
+        if(cmd == FLASH29_CMD_READ)
+           { 
+	    i = 0;		
+	    while(i<j)	
+            {
+		temp = *pFA++;
+		temp1 = *(int *)0xa0000000;
+                *(int *)0xbf0081f8 = temp1 + temp;
+		*str++ = temp;
+		i++;
+	    }  		
+           }
+
+         if(cmd == FLASH29_CMD_READ_RESET) 
+         {
+            *(FLASH29_REG_FIRST_CYCLE)  = FLASH29_CMD_FIRST;
+            *(FLASH29_REG_SECOND_CYCLE) = FLASH29_CMD_SECOND;
+            *(FLASH29_REG_THIRD_CYCLE)  = FLASH29_CMD_READ_RESET;
+         } 			 	
+	    	
+	*(int *)0xbf0081f8 = *(int *)0xa0000000;	/* dummy read switch back to sdram interface */	
+}
+
+/******************************************************************************
+*
+* Don't change the program architecture
+* This architecture assure the program
+* can be relocated to scratch ram
+*/
+static void flash_write_cmd(int cmd, FPWV * pFA, FPW value)
+{						
+        *(FLASH29_REG_FIRST_CYCLE)  = FLASH29_CMD_FIRST;
+        *(FLASH29_REG_SECOND_CYCLE) = FLASH29_CMD_SECOND;
+
+	if (cmd == FLASH29_CMD_SECTOR)
+	   {
+            *(FLASH29_REG_THIRD_CYCLE)  = FLASH29_CMD_CHIP_ERASE;
+            *(FLASH29_REG_FOURTH_CYCLE) = FLASH29_CMD_FOURTH;
+            *(FLASH29_REG_FIFTH_CYCLE)  = FLASH29_CMD_FIFTH;
+            *pFA		        = FLASH29_CMD_SECTOR;
+           }
+
+        if (cmd == FLASH29_CMD_SIXTH)
+           { 
+            *(FLASH29_REG_THIRD_CYCLE)  = FLASH29_CMD_CHIP_ERASE;
+            *(FLASH29_REG_FOURTH_CYCLE) = FLASH29_CMD_FOURTH;
+            *(FLASH29_REG_FIFTH_CYCLE)  = FLASH29_CMD_FIFTH;
+            *(FLASH29_REG_SIXTH_CYCLE)  = FLASH29_CMD_SIXTH;
+	   }
+
+        if (cmd == FLASH29_CMD_PROGRAM)
+           {
+            *(FLASH29_REG_THIRD_CYCLE)  = FLASH29_CMD_PROGRAM;
+	    *pFA = value;
+           }
+
+        if (cmd == FLASH29_CMD_READ_RESET)    
+           {
+            *(FLASH29_REG_THIRD_CYCLE)  = FLASH29_CMD_READ_RESET;
+           } 			 	
+	    	
+	*(int *)0xbf0081f8 = *(int *)0xa0000000;	/* dummy read switch back to sdram interface */	
+}
+
+static void load_cmd(ulong cmd)
+{
+	ulong *src;
+	ulong *dst;
+	FUNCPTR_CP absEntry;
+	ulong func;
+	 
+	if (in_ram_cmd & cmd) return;
+	
+	if (cmd == IN_RAM_CMD_READ)
+	{
+		func = (ulong)flash_read_cmd;
+	}
+	else
+	{
+		func = (ulong)flash_write_cmd;
+	}
+
+    	src = (ulong *)(func & 0xfffffff8);
+    	dst = (ulong *)0xbf008000;
+    	absEntry = (FUNCPTR_CP)(0xbf0081d0);
+    	absEntry(src,dst,0x38);
+
+        in_ram_cmd = cmd;
+}
+
+/*-----------------------------------------------------------------------
+ * flash_init()
+ *
+ * sets up flash_info and returns size of FLASH (bytes)
+ */
+unsigned long flash_init (void)
+{
+	unsigned long size = 0;
+	int i;
+	 
+        load_cmd(IN_RAM_CMD_READ);
+
+	/* Init: no FLASHes known */
+	for (i=0; i < CFG_MAX_FLASH_BANKS; ++i) {
+		ulong flashbase = PHYS_FLASH_1;
+		ulong * buscon = (ulong *) INCA_IP_EBU_EBU_BUSCON0;
+		
+		/* Disable write protection */
+		*buscon &= ~INCA_IP_EBU_EBU_BUSCON1_WRDIS;
+
+#if 1
+		memset(&flash_info[i], 0, sizeof(flash_info_t));
+#endif
+
+		flash_info[i].size = 
+			flash_get_size((FPW *)flashbase, &flash_info[i]);
+
+		if (flash_info[i].flash_id == FLASH_UNKNOWN) {
+			printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx\n",
+			i, flash_info[i].size);
+		}
+		
+		size += flash_info[i].size;
+	}
+
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+	/* monitor protection ON by default */
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_MONITOR_BASE,
+		      CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
+		      flash_get_info(CFG_MONITOR_BASE));
+#endif
+
+#ifdef	CFG_ENV_IS_IN_FLASH
+	/* ENV protection ON by default */
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_ENV_ADDR,
+		      CFG_ENV_ADDR+CFG_ENV_SIZE-1,
+		      flash_get_info(CFG_ENV_ADDR));
+#endif
+
+	return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+static void flash_get_offsets (ulong base, flash_info_t *info)
+{
+	int i;
+
+	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD
+		 && (info->flash_id & FLASH_TYPEMASK) == FLASH_AM160B) {
+
+		int bootsect_size[4];	/* number of bytes/boot sector  */
+		int sect_size;		/* number of bytes/regular sector */
+
+		bootsect_size[0] = 0x00008000;
+		bootsect_size[1] = 0x00004000;
+		bootsect_size[2] = 0x00004000;
+		bootsect_size[3] = 0x00010000;
+		sect_size =        0x00020000;
+
+		/* set sector offsets for bottom boot block type	*/
+		for (i = 0; i < info->sector_count; i++) {
+			info->start[i] = base;
+			base += i < 4 ? bootsect_size[i] : sect_size;
+		}
+	}
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+static flash_info_t *flash_get_info(ulong base)
+{
+	int i;
+	flash_info_t * info;
+	
+	for (i = 0; i < CFG_MAX_FLASH_BANKS; i ++) {
+		info = & flash_info[i];
+		if (info->start[0] <= base && base < info->start[0] + info->size)
+			break;
+	}
+	
+	return i == CFG_MAX_FLASH_BANKS ? 0 : info;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+void flash_print_info (flash_info_t *info)
+{
+	int i;
+	uchar *boottype;
+	uchar *bootletter;
+	uchar *fmt;
+	uchar botbootletter[] = "B";
+	uchar topbootletter[] = "T";
+	uchar botboottype[] = "bottom boot sector";
+	uchar topboottype[] = "top boot sector";
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		printf ("missing or unknown FLASH type\n");
+		return;
+	}
+
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case FLASH_MAN_AMD:	printf ("AMD ");		break;
+	case FLASH_MAN_BM:	printf ("BRIGHT MICRO ");	break;
+	case FLASH_MAN_FUJ:	printf ("FUJITSU ");		break;
+	case FLASH_MAN_SST:	printf ("SST ");		break;
+	case FLASH_MAN_STM:	printf ("STM ");		break;
+	case FLASH_MAN_INTEL:	printf ("INTEL ");		break;
+	default:		printf ("Unknown Vendor ");	break;
+	}
+
+	/* check for top or bottom boot, if it applies */
+	if (info->flash_id & FLASH_BTYPE) {
+		boottype = botboottype;
+		bootletter = botbootletter;
+	}
+	else {
+		boottype = topboottype;
+		bootletter = topbootletter;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AM160B:
+		fmt = "29LV160B%s (16 Mbit, %s)\n";
+		break;
+        case FLASH_28F800C3B:
+        case FLASH_28F800C3T:
+		fmt = "28F800C3%s (8 Mbit, %s)\n";
+		break;
+	case FLASH_INTEL800B:
+	case FLASH_INTEL800T:
+		fmt = "28F800B3%s (8 Mbit, %s)\n";
+		break;
+        case FLASH_28F160C3B:
+        case FLASH_28F160C3T:
+		fmt = "28F160C3%s (16 Mbit, %s)\n";
+		break;
+	case FLASH_INTEL160B:
+	case FLASH_INTEL160T:
+		fmt = "28F160B3%s (16 Mbit, %s)\n";
+		break;
+        case FLASH_28F320C3B:
+        case FLASH_28F320C3T:
+		fmt = "28F320C3%s (32 Mbit, %s)\n";
+		break;
+	case FLASH_INTEL320B:
+	case FLASH_INTEL320T:
+		fmt = "28F320B3%s (32 Mbit, %s)\n";
+		break;
+        case FLASH_28F640C3B:
+        case FLASH_28F640C3T:
+		fmt = "28F640C3%s (64 Mbit, %s)\n";
+		break;
+	case FLASH_INTEL640B:
+	case FLASH_INTEL640T:
+		fmt = "28F640B3%s (64 Mbit, %s)\n";
+		break;
+	default:
+		fmt = "Unknown Chip Type\n";
+		break;
+	}
+
+	printf (fmt, bootletter, boottype);
+
+	printf ("  Size: %ld MB in %d Sectors\n",
+		info->size >> 20,
+		info->sector_count);
+
+	printf ("  Sector Start Addresses:");
+
+	for (i=0; i<info->sector_count; ++i) {
+		if ((i % 5) == 0) {
+			printf ("\n   ");
+		}
+
+		printf (" %08lX%s", info->start[i],
+			info->protect[i] ? " (RO)" : "     ");
+	}
+
+	printf ("\n");
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+
+ulong flash_get_size (FPWV *addr, flash_info_t *info)
+{
+	FUNCPTR_RD absEntry;
+	FPW retValue;	
+	int flag;
+
+        load_cmd(IN_RAM_CMD_READ);
+	absEntry = (FUNCPTR_RD)FLASH_READ_CMD;
+
+	flag = disable_interrupts();
+	absEntry(FLASH29_CMD_AUTOSELECT,0,0,0);
+	if (flag) enable_interrupts();
+	
+	udelay(100);
+
+	flag = disable_interrupts();
+	absEntry(FLASH29_CMD_READ, addr + 1, (char *)&retValue, sizeof(retValue));
+	absEntry(FLASH29_CMD_READ_RESET,0,0,0);
+	if (flag) enable_interrupts();
+
+	udelay(100);
+
+	switch (retValue) {
+
+	case (FPW)AMD_ID_LV160B:
+		info->flash_id += FLASH_AM160B;
+		info->sector_count = 35;
+		info->size = 0x00400000;
+		break;				/* => 8 or 16 MB	*/
+
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		return (0);			/* => no or unknown flash */
+	}
+
+	flash_get_offsets((ulong)addr, info);
+
+	return (info->size);
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int	flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+	FPWV *addr;
+	int flag, prot, sect;
+	ulong start, now, last;
+	int rcode = 0;
+	FUNCPTR_WR absEntry;
+
+        load_cmd(IN_RAM_CMD_WRITE);
+	absEntry = (FUNCPTR_WR)FLASH_WRITE_CMD;
+
+	if ((s_first < 0) || (s_first > s_last)) {
+		if (info->flash_id == FLASH_UNKNOWN) {
+			printf ("- missing\n");
+		} else {
+			printf ("- no sectors to erase\n");
+		}
+		return 1;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AM160B:
+		break;
+	case FLASH_UNKNOWN:
+	default:
+		printf ("Can't erase unknown flash type %08lx - aborted\n",
+			info->flash_id);
+		return 1;
+	}
+
+	prot = 0;
+	for (sect=s_first; sect<=s_last; ++sect) {
+		if (info->protect[sect]) {
+			prot++;
+		}
+	}
+
+	if (prot) {
+		printf ("- Warning: %d protected sectors will not be erased!\n",
+			prot);
+	} else {
+		printf ("\n");
+	}
+
+	last  = get_timer(0);
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect<=s_last && rcode == 0; sect++) {
+
+		if (info->protect[sect] != 0)	/* protected, skip it */
+			continue;
+
+		/* Disable interrupts which might cause a timeout here */
+		flag = disable_interrupts();
+
+		addr = (FPWV *)(info->start[sect]);
+		absEntry(FLASH29_CMD_SECTOR, addr, 0);
+
+		/* re-enable interrupts if necessary */
+		if (flag)
+			enable_interrupts();
+
+		start = get_timer(0);
+
+		while ((now = get_timer(start)) <= CFG_FLASH_ERASE_TOUT) {
+
+			/* show that we're waiting */
+			if ((get_timer(last)) > CFG_HZ) {/* every second */
+				putc ('.');
+				last = get_timer(0);
+			}
+		}
+
+		flag = disable_interrupts();
+		absEntry(FLASH29_CMD_READ_RESET,0,0);
+		if (flag)
+			enable_interrupts();
+	}
+
+	printf (" done\n");
+	return rcode;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+    FPW data = 0; /* 16 or 32 bit word, matches flash bus width on MPC8XX */
+    int bytes;	  /* number of bytes to program in current word		*/
+    int left;	  /* number of bytes left to program			*/
+    int i, res;
+
+    for (left = cnt, res = 0;
+	 left > 0 && res == 0;
+	 addr += sizeof(data), left -= sizeof(data) - bytes) {
+
+        bytes = addr & (sizeof(data) - 1);
+        addr &= ~(sizeof(data) - 1);
+
+	/* combine source and destination data so can program
+	 * an entire word of 16 or 32 bits
+	 */
+        for (i = 0; i < sizeof(data); i++) {
+            data <<= 8;
+            if (i < bytes || i - bytes >= left )
+		data += *((uchar *)addr + i);
+	    else
+		data += *src++;
+	}
+
+	res = write_word(info, (FPWV *)addr, data);
+    }
+
+    return (res);
+}
+
+static int write_word (flash_info_t *info, FPWV *dest, FPW data)
+{
+    int res = 0;	/* result, assume success	*/
+    FUNCPTR_WR absEntry;
+    int flag;
+
+    /* Check if Flash is (sufficiently) erased */
+    if ((*dest & data) != data) {
+	return (2);
+    }
+
+    if (info->start[0] != PHYS_FLASH_1)
+    {
+	return (3);
+    }
+
+    load_cmd(IN_RAM_CMD_WRITE);
+    absEntry = (FUNCPTR_WR)FLASH_WRITE_CMD;
+
+    flag = disable_interrupts();
+    absEntry(FLASH29_CMD_PROGRAM,dest,data);
+    if (flag) enable_interrupts();
+
+    udelay(100);
+
+    flag = disable_interrupts();
+    absEntry(FLASH29_CMD_READ_RESET,0,0);
+    if (flag) enable_interrupts();
+
+    return (res);
+}
diff --git a/board/purple/memsetup.S b/board/purple/memsetup.S
new file mode 100644
index 0000000..55daf8a
--- /dev/null
+++ b/board/purple/memsetup.S
@@ -0,0 +1,35 @@
+/*
+ *  Memory sub-system initialization code for PURPLE development board.
+ *
+ *  Copyright (c) 2003	Wolfgang Denk <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 <config.h>
+#include <version.h>
+#include <asm/regdef.h>
+
+
+	.globl	memsetup
+memsetup:
+
+	j	ra
+	nop
+
diff --git a/board/purple/purple.c b/board/purple/purple.c
new file mode 100644
index 0000000..293cc56
--- /dev/null
+++ b/board/purple/purple.c
@@ -0,0 +1,197 @@
+/*
+ * (C) Copyright 2003
+ * 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 <command.h>
+#include <asm/inca-ip.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+#include <asm/cacheops.h>
+
+#include "sconsole.h"
+
+#define cache_unroll(base,op)	        	\
+	__asm__ __volatile__("	         	\
+		.set noreorder;		        \
+		.set mips3;		        \
+                cache %1, (%0);	                \
+		.set mips0;			\
+		.set reorder"			\
+		:				\
+		: "r" (base),			\
+		  "i" (op));
+
+typedef void (*FUNCPTR)(ulong *source, ulong *destination, ulong nlongs);
+
+extern void	asc_serial_init		(void);
+extern void	asc_serial_putc 	(char);
+extern void	asc_serial_puts 	(const char *);
+extern int	asc_serial_getc 	(void);
+extern int	asc_serial_tstc 	(void);
+extern void	asc_serial_setbrg 	(void);
+
+
+long int initdram(int board_type)
+{
+	/* The only supported number of SDRAM banks is 4.
+	 */
+#define CFG_NB	4
+
+	ulong	cfgpb0	= *INCA_IP_SDRAM_MC_CFGPB0;
+	ulong	cfgdw	= *INCA_IP_SDRAM_MC_CFGDW;
+	int	cols	= cfgpb0 & 0xF;
+	int	rows	= (cfgpb0 & 0xF0) >> 4;
+	int	dw	= cfgdw & 0xF;
+	ulong	size	= (1 << (rows + cols)) * (1 << (dw - 1)) * CFG_NB;
+
+	return size;
+}
+
+int checkboard (void)
+{
+
+	unsigned long chipid = *(unsigned long *)0xB800C800;
+
+	printf ("Board: Purple PLB 2800 chip version %ld, ", chipid & 0xF);
+
+	printf("CPU Speed %d MHz\n", CPU_CLOCK_RATE/1000000);
+
+	return 0;
+}
+
+int misc_init_r (void)
+{
+	asc_serial_init ();
+
+	sconsole_putc   = asc_serial_putc;
+	sconsole_puts   = asc_serial_puts;
+	sconsole_getc   = asc_serial_getc;
+	sconsole_tstc   = asc_serial_tstc;
+	sconsole_setbrg = asc_serial_setbrg;
+
+	sconsole_flush ();
+	return (0);
+}
+
+/*******************************************************************************
+*
+* copydwords - copy one buffer to another a long at a time
+*
+* This routine copies the first <nlongs> longs from <source> to <destination>.
+*/
+static void copydwords (ulong *source, ulong *destination, ulong nlongs)
+{
+	ulong temp,temp1;
+	ulong *dstend = destination + nlongs;
+
+	while (destination < dstend)
+	{
+		temp = *source++;
+		/* dummy read from sdram */
+		temp1 = *(ulong *)0xa0000000;
+		/* avoid optimization from compliler */
+		*(ulong *)0xbf0081f8 = temp1 + temp;
+		*destination++ = temp;
+
+	} 
+}
+
+/*******************************************************************************
+*
+* copyLongs - copy one buffer to another a long at a time
+*
+* This routine copies the first <nlongs> longs from <source> to <destination>.
+*/
+static void copyLongs (ulong *source, ulong *destination, ulong nlongs)
+{
+	FUNCPTR absEntry;
+
+	absEntry = (FUNCPTR)(0xbf008000+((ulong)copydwords & 0x7));
+	absEntry(source, destination, nlongs);
+}
+
+/*******************************************************************************
+*
+* programLoad - load program into ram
+*
+* This routine load copydwords into ram
+*
+*/
+static void programLoad(void)
+{
+	FUNCPTR absEntry;
+	ulong *src,*dst;
+
+	src = (ulong *)(TEXT_BASE + 0x428);
+	dst = (ulong *)0xbf0081d0;
+
+	absEntry = (FUNCPTR)(TEXT_BASE + 0x400);   
+	absEntry(src,dst,0x6);     	
+
+	src = (ulong *)((ulong)copydwords & 0xfffffff8);
+	dst = (ulong *)0xbf008000;
+
+	absEntry(src,dst,0x38);
+}
+
+/*******************************************************************************
+*
+* copy_code - copy u-boot image from flash to RAM
+*
+* This routine is needed to solve flash problems on this board
+*
+*/
+void copy_code (ulong dest_addr)
+{
+	unsigned long start;
+	unsigned long end;
+
+	/* load copydwords into ram
+	 */
+	programLoad();
+
+	/* copy u-boot code
+	 */
+	copyLongs((ulong *)CFG_MONITOR_BASE,
+		  (ulong *)dest_addr,
+		  (CFG_MONITOR_LEN + 3) / 4);
+
+
+	/* flush caches
+	 */
+
+	start = KSEG0;
+	end = start + CFG_DCACHE_SIZE;
+	while(start < end) {
+		cache_unroll(start,Index_Writeback_Inv_D);
+		start += CFG_CACHELINE_SIZE;
+	}
+
+	start = KSEG0;
+	end = start + CFG_ICACHE_SIZE;
+	while(start < end) {
+		cache_unroll(start,Index_Invalidate_I);
+		start += CFG_CACHELINE_SIZE;
+	}
+}
diff --git a/board/purple/sconsole.c b/board/purple/sconsole.c
new file mode 100644
index 0000000..f52d50d
--- /dev/null
+++ b/board/purple/sconsole.c
@@ -0,0 +1,125 @@
+/*
+ * (C) Copyright 2002
+ * 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 <config.h>
+#include <common.h>
+
+#include "sconsole.h"
+
+void	(*sconsole_putc) (char) = 0;
+void	(*sconsole_puts) (const char *) = 0;
+int	(*sconsole_getc) (void) = 0;
+int	(*sconsole_tstc) (void) = 0;
+void	(*sconsole_setbrg) (void) = 0;
+
+int serial_init (void)
+{
+	sconsole_buffer_t *sb = SCONSOLE_BUFFER;
+
+	sb->pos  = 0;
+	sb->size = 0;
+	sb->max_size = CFG_SCONSOLE_SIZE - sizeof (sconsole_buffer_t);
+
+	return (0);
+}
+
+void serial_putc (char c)
+{
+	if (sconsole_putc) {
+		(*sconsole_putc) (c);
+	} else {
+		sconsole_buffer_t *sb = SCONSOLE_BUFFER;
+
+		if (c) {
+			sb->data[sb->pos++] = c;
+			if (sb->pos == sb->max_size) {
+				sb->pos = 0;
+			}
+			if (sb->size < sb->max_size) {
+				sb->size++;
+			}
+		}
+	}
+}
+
+void serial_puts (const char *s)
+{
+	if (sconsole_puts) {
+		(*sconsole_puts) (s);
+	} else {
+		sconsole_buffer_t *sb = SCONSOLE_BUFFER;
+
+		while (*s) {
+			sb->data[sb->pos++] = *s++;
+			if (sb->pos == sb->max_size) {
+				sb->pos = 0;
+			}
+			if (sb->size < sb->max_size) {
+				sb->size++;
+			}
+		}
+	}
+}
+
+int serial_getc (void)
+{
+	if (sconsole_getc) {
+		return (*sconsole_getc) ();
+	} else {
+		return 0;
+	}
+}
+
+int serial_tstc (void)
+{
+	if (sconsole_tstc) {
+		return (*sconsole_tstc) ();
+	} else {
+		return 0;
+	}
+}
+
+void serial_setbrg (void)
+{
+	if (sconsole_setbrg) {
+		(*sconsole_setbrg) ();
+	}
+}
+
+void sconsole_flush (void)
+{
+	if (sconsole_putc) {
+		sconsole_buffer_t *sb = SCONSOLE_BUFFER;
+		unsigned int end = sb->pos < sb->size
+				? sb->pos + sb->max_size - sb->size
+				: sb->pos - sb->size;
+
+		while (sb->size) {
+			(*sconsole_putc) (sb->data[end++]);
+			if (end == sb->max_size) {
+				end = 0;
+			}
+			sb->size--;
+		}
+	}
+}
diff --git a/board/purple/sconsole.h b/board/purple/sconsole.h
new file mode 100644
index 0000000..d441f37
--- /dev/null
+++ b/board/purple/sconsole.h
@@ -0,0 +1,47 @@
+/*
+ * (C) Copyright 2002
+ * 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
+ */
+
+#ifndef _SCONSOLE_H_
+#define _SCONSOLE_H_
+
+#include <config.h>
+
+typedef struct sconsole_buffer_s
+{
+  unsigned long		size;
+  unsigned long		max_size;
+  unsigned long 	pos;
+  char			data [1];
+} sconsole_buffer_t;
+
+#define SCONSOLE_BUFFER		((sconsole_buffer_t *) CFG_SCONSOLE_ADDR)
+
+extern void	(* sconsole_putc) 	(char);
+extern void	(* sconsole_puts) 	(const char *);
+extern int	(* sconsole_getc) 	(void);
+extern int	(* sconsole_tstc) 	(void);
+extern void	(* sconsole_setbrg) 	(void);
+
+extern void	sconsole_flush		(void);
+
+#endif
diff --git a/board/purple/u-boot.lds b/board/purple/u-boot.lds
new file mode 100644
index 0000000..7508865
--- /dev/null
+++ b/board/purple/u-boot.lds
@@ -0,0 +1,74 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk 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
+ */
+
+/*
+OUTPUT_FORMAT("elf32-bigmips", "elf32-bigmips", "elf32-bigmips")
+*/
+OUTPUT_FORMAT("elf32-tradbigmips", "elf32-tradbigmips", "elf32-tradbigmips")
+OUTPUT_ARCH(mips)
+ENTRY(_start)
+SECTIONS
+{
+        . = 0x00000000;
+
+        . = ALIGN(4);
+	.text       :
+	{
+	  cpu/mips/start.o		(.text)
+	  board/purple/memsetup.o	(.text)
+	  cpu/mips/cache.o		(.text)
+	  common/main.o			(.text)
+	  common/dlmalloc.o		(.text)
+	  common/cmd_boot.o		(.text)
+	  lib_generic/zlib.o		(.text)
+	  . = DEFINED(env_offset) ? env_offset : .;
+	  common/environment.o	(.ppcenv)
+
+	  *(.text)
+	}
+
+        . = ALIGN(4);
+        .rodata  : { *(.rodata) }
+
+        . = ALIGN(4);
+        .data  : { *(.data) }
+
+	. = ALIGN(4);
+	.sdata  : { *(.sdata) }
+
+	_gp = ALIGN(16);
+
+	__got_start = .;
+	.got  : { *(.got) }
+	__got_end = .;
+
+	.sdata  : { *(.sdata) }
+
+	uboot_end_data = .;
+	num_got_entries = (__got_end - __got_start) >> 2;
+
+        . = ALIGN(4);
+	.sbss  : { *(.sbss) }
+        .bss  : { *(.bss) }
+	uboot_end = .;
+}