Add support for AMCC 440SP, add support for AMCC Luan 440SP eval board.

Patch by John Otken, 23 Nov 2005

7 files changed, 1034 insertions, 0 deletions

diff --git a/board/amcc/luan/Makefile b/board/amcc/luan/Makefile
new file mode 100644
index 0000000000..5654f91a83
--- /dev/null
+++ b/board/amcc/luan/Makefile
@@ -0,0 +1,48 @@
+#
+# (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 $(TOPDIR)/config.mk
+
+LIB	= lib$(BOARD).a
+
+OBJS	= $(BOARD).o
+OBJS   += flash.o
+SOBJS	= init.o
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) crv $@ $(OBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+.depend:	Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/board/amcc/luan/config.mk b/board/amcc/luan/config.mk
new file mode 100644
index 0000000000..f52c206177
--- /dev/null
+++ b/board/amcc/luan/config.mk
@@ -0,0 +1,44 @@
+#
+# (C) Copyright 2002
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+#
+# esd ADCIOP boards
+#
+
+#TEXT_BASE = 0x00001000
+
+ifeq ($(ramsym),1)
+TEXT_BASE = 0xFBD00000
+else
+TEXT_BASE = 0xFFFC0000
+endif
+
+PLATFORM_CPPFLAGS += -DCONFIG_440=1
+
+ifeq ($(debug),1)
+PLATFORM_CPPFLAGS += -DDEBUG
+endif
+
+ifeq ($(dbcr),1)
+PLATFORM_CPPFLAGS += -DCFG_INIT_DBCR=0x8cff0000
+endif
diff --git a/board/amcc/luan/epld.h b/board/amcc/luan/epld.h
new file mode 100644
index 0000000000..05362e06d7
--- /dev/null
+++ b/board/amcc/luan/epld.h
@@ -0,0 +1,85 @@
+#define EPLD0_FSEL_FB2		0x80
+#define EPLD0_BOOT_SMALL_FLASH	0x40	/* 0 boot from large flash, 1 from small flash */
+#define EPLD0_RAW_CARD_BIT0	0x20	/* raw card EC level */
+#define EPLD0_RAW_CARD_BIT1	0x10
+#define EPLD0_RAW_CARD_BIT2	0x08
+#define EPLD0_EXT_ARB_SEL_N	0x04	/* 0 select on-board ext PCI-X, 1 internal arbiter */
+#define EPLD0_FLASH_ONBRD_N	0x02	/* 0 small flash/SRAM active, 1 block access */
+#define EPLD0_FLASH_SRAM_SEL_N	0x01	/* 0 SRAM at mem top, 1 small flash at mem top */
+
+#define EPLD1_CLK_CNTL0		0x80	/* FSEL-FB1 of MPC9772 */
+#define EPLD1_PCIX0_CNTL1	0x40	/* S*0 of 9531 */
+#define EPLD1_PCIX0_CNTL2	0x20	/* S*1 of 9531 */
+#define EPLD1_CLK_CNTL3		0x10	/* FSEL-B1 of MPC9772 */
+#define EPLD1_CLK_CNTL4		0x08	/* FSEL-B0 of MPC9772 */
+#define EPLD1_MASTER_CLOCK6	0x04	/* clock source select 6 */
+#define EPLD1_MASTER_CLOCK7	0x02	/* clock source select 7 */
+#define EPLD1_MASTER_CLOCK8	0x01	/* clock source select 8 */
+
+#define EPLD2_ETH_MODE_10	0x80	/* Ethernet mode 10   (default = 1) */
+#define EPLD2_ETH_MODE_100	0x40	/* Ethernet mode 100  (default = 1) */
+#define EPLD2_ETH_MODE_1000	0x20	/* Ethernet mode 1000 (default = 1) */
+#define EPLD2_ETH_DUPLEX_MODE	0x10	/* Ethernet force full duplex mode */
+#define EPLD2_RESET_ETH_N	0x08	/* Ethernet reset (default = 1) */
+#define EPLD2_ETH_AUTO_NEGO	0x04	/* Ethernet auto negotiation */
+#define EPLD2_DEFAULT_UART_N	0x01	/* 0 select DSR DTR for UART1 */
+
+#define EPLD3_STATUS_LED4	0x08	/* status LED 8 (1 = LED on) */
+#define EPLD3_STATUS_LED3	0x04	/* status LED 4 (1 = LED on) */
+#define EPLD3_STATUS_LED2	0x02	/* status LED 2 (1 = LED on) */
+#define EPLD3_STATUS_LED1	0x01	/* status LED 1 (1 = LED on) */
+
+#define EPLD4_PCIX0_VTH1	0x80	/* PCI-X 0 VTH1 status */
+#define EPLD4_PCIX0_VTH2	0x40	/* PCI-X 0 VTH2 status */
+#define EPLD4_PCIX0_VTH3	0x20	/* PCI-X 0 VTH3 status */
+#define EPLD4_PCIX0_VTH4	0x10	/* PCI-X 0 VTH4 status */
+#define EPLD4_PCIX1_VTH1	0x08	/* PCI-X 1 VTH1 status */
+#define EPLD4_PCIX1_VTH2	0x04	/* PCI-X 1 VTH2 status */
+#define EPLD4_PCIX1_VTH3	0x02	/* PCI-X 1 VTH3 status */
+#define EPLD4_PCIX1_VTH4	0x01	/* PCI-X 1 VTH4 status */
+
+#define EPLD5_PCIX0_INT0	0x80	/* PCIX0 INT0 status, write 0 to reset */
+#define EPLD5_PCIX0_INT1	0x40	/* PCIX0 INT1 status, write 0 to reset */
+#define EPLD5_PCIX0_INT2	0x20	/* PCIX0 INT2 status, write 0 to reset */
+#define EPLD5_PCIX0_INT3	0x10	/* PCIX0 INT3 status, write 0 to reset */
+#define EPLD5_PCIX1_INT0	0x08	/* PCIX1 INT0 status, write 0 to reset */
+#define EPLD5_PCIX1_INT1	0x04	/* PCIX1 INT1 status, write 0 to reset */
+#define EPLD5_PCIX1_INT2	0x02	/* PCIX1 INT2 status, write 0 to reset */
+#define EPLD5_PCIX1_INT3	0x01	/* PCIX1 INT3 status, write 0 to reset */
+
+#define EPLD6_PCIX0_RESET_CTL	0x80	/* 0=enable slot reset, 1=disable slot reset */
+#define EPLD6_PCIX1_RESET_CTL	0x40	/* 0=enable slot reset, 1=disable slot reset */
+#define EPLD6_ETH_INT_MODE	0x20	/* 0=IRQ5 recv's external eth int */
+#define EPLD6_PCIX2_RESET_CTL	0x10	/* 0=enable slot reset, 1=disable slot reset */
+#define EPLD6_PCI1_CLKCNTL1	0x80	/* PCI1 clock control S*0 of 9531 */
+#define EPLD6_PCI1_CLKCNTL2	0x40	/* PCI1 clock control S*1 of 9531 */
+#define EPLD6_PCI2_CLKCNTL1	0x20	/* PCI2 clock control S*0 of 9531 */
+#define EPLD6_PCI2_CLKCNTL2	0x10	/* PCI2 clock control S*1 of 9531 */
+
+#define EPLD7_VTH1		0x80	/* PCI2 VTH1 status */
+#define EPLD7_VTH2		0x40	/* PCI2 VTH2 status */
+#define EPLD7_VTH3		0x20	/* PCI2 VTH3 status */
+#define EPLD7_VTH4		0x10	/* PCI2 VTH4 status */
+#define EPLD7_INTA_MODE		0x80	/* see S5 on SW2 for details */
+#define EPLD7_PCI_INT_MODE_N	0x40	/* see S1 on SW2 for details */
+#define EPLD7_WRITE_ENABLE_GPIO	0x20	/* see S2 on SW2 for details */
+#define EPLD7_WRITE_ENABLE_INT	0x10	/* see S3 on SW2 for details */
+
+
+typedef struct {
+    unsigned char  status;		/* misc status */
+    unsigned char  clock;		/* clock status, PCI-X clock control */
+    unsigned char  ethuart;		/* Ethernet, UART status */
+    unsigned char  leds;		/* LED register */
+    unsigned char  vth01;		/* PCI0, PCI1 VTH register */
+    unsigned char  pciints;		/* PCI0, PCI1 interrupts */
+    unsigned char  pci2;		/* PCI2 interrupts, clock control */
+    unsigned char  vth2;		/* PCI2 VTH register */
+    unsigned char  filler1[4096-8];
+    unsigned char  gpio00;		/* GPIO bits  0-7 */
+    unsigned char  gpio08;		/* GPIO bits  8-15 */
+    unsigned char  gpio16;		/* GPIO bits 16-23 */
+    unsigned char  gpio24;		/* GPIO bits 24-31 */
+    unsigned char  filler2[4096-4];
+    unsigned char  version;		/* EPLD version */
+} epld_t;
diff --git a/board/amcc/luan/flash.c b/board/amcc/luan/flash.c
new file mode 100644
index 0000000000..d3c3c0d058
--- /dev/null
+++ b/board/amcc/luan/flash.c
@@ -0,0 +1,111 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
+ * Add support for Am29F016D and dynamic switch setting.
+ *
+ * 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
+ */
+
+/*
+ * Modified 4/5/2001
+ * Wait for completion of each sector erase command issued
+ * 4/5/2001
+ * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
+ */
+
+#include <common.h>
+#include <ppc4xx.h>
+#include <asm/processor.h>
+
+#undef DEBUG
+#ifdef DEBUG
+#define DEBUGF(x...) printf(x)
+#else
+#define DEBUGF(x...)
+#endif				/* DEBUG */
+
+static unsigned long flash_addr_table[1][CFG_MAX_FLASH_BANKS] = {
+	{0xff900000, 0xff980000, 0xffc00000},	/* 0:000: configuraton 3 */
+};
+
+/*
+ * include common flash code (for amcc boards)
+ */
+#include "../common/flash.c"
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static ulong flash_get_size(vu_long * addr, flash_info_t * info);
+
+unsigned long flash_init(void)
+{
+	unsigned long total_b = 0;
+	unsigned long size_b[CFG_MAX_FLASH_BANKS];
+	unsigned short index = 0;
+	int i;
+
+	/* read FPGA base register FPGA_REG0 */
+
+	DEBUGF("\n");
+	DEBUGF("FLASH: Index: %d\n", index);
+
+	/* Init: no FLASHes known */
+	for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
+		flash_info[i].flash_id = FLASH_UNKNOWN;
+		flash_info[i].sector_count = -1;
+		flash_info[i].size = 0;
+
+		/* check whether the address is 0 */
+		if (flash_addr_table[index][i] == 0) {
+			continue;
+		}
+
+		/* call flash_get_size() to initialize sector address */
+		size_b[i] = flash_get_size((vu_long *)
+					   flash_addr_table[index][i],
+					   &flash_info[i]);
+		flash_info[i].size = size_b[i];
+		if (flash_info[i].flash_id == FLASH_UNKNOWN) {
+			printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
+			       i, size_b[i], size_b[i] << 20);
+			flash_info[i].sector_count = -1;
+			flash_info[i].size = 0;
+		}
+
+		/* Monitor protection ON by default */
+		(void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
+				    CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
+				    &flash_info[2]);
+#ifdef CFG_ENV_IS_IN_FLASH
+		(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
+				    CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
+				    &flash_info[2]);
+		(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
+				    CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
+				    &flash_info[2]);
+#endif
+
+		total_b += flash_info[i].size;
+	}
+
+	return total_b;
+}
diff --git a/board/amcc/luan/init.S b/board/amcc/luan/init.S
new file mode 100644
index 0000000000..7830ebdfa6
--- /dev/null
+++ b/board/amcc/luan/init.S
@@ -0,0 +1,132 @@
+/*
+*
+* 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 <ppc_asm.tmpl>
+#include <config.h>
+
+/* General */
+#define TLB_VALID   0x00000200
+
+/* Supported page sizes */
+
+#define SZ_1K	    0x00000000
+#define SZ_4K	    0x00000010
+#define SZ_16K	    0x00000020
+#define SZ_64K	    0x00000030
+#define SZ_256K	    0x00000040
+#define SZ_1M	    0x00000050
+#define SZ_16M	    0x00000070
+#define SZ_256M	    0x00000090
+
+/* Storage attributes */
+#define SA_W	    0x00000800	    /* Write-through */
+#define SA_I	    0x00000400	    /* Caching inhibited */
+#define SA_M	    0x00000200	    /* Memory coherence */
+#define SA_G	    0x00000100	    /* Guarded */
+#define SA_E	    0x00000080	    /* Endian */
+
+/* Access control */
+#define AC_X	    0x00000024	    /* Execute */
+#define AC_W	    0x00000012	    /* Write */
+#define AC_R	    0x00000009	    /* Read */
+
+/* Some handy macros */
+
+#define EPN(e)		((e) & 0xfffffc00)
+#define TLB0(epn,sz)	( (EPN((epn)) | (sz) | TLB_VALID ) )
+#define TLB1(rpn,erpn)	( ((rpn)&0xfffffc00) | (erpn) )
+#define TLB2(a)		( (a)&0x00000fbf )
+
+#define tlbtab_start\
+	mflr    r1  ;\
+	bl 0f	    ;
+
+#define tlbtab_end\
+	.long 0, 0, 0	;   \
+0:	mflr    r0	;   \
+	mtlr    r1	;   \
+	blr		;
+
+#define tlbentry(epn,sz,rpn,erpn,attr)\
+	.long TLB0(epn,sz),TLB1(rpn,erpn),TLB2(attr)
+
+
+/**************************************************************************
+ * TLB TABLE
+ *
+ * This table is used by the cpu boot code to setup the initial tlb
+ * entries. Rather than make broad assumptions in the cpu source tree,
+ * this table lets each board set things up however they like.
+ *
+ *  Pointer to the table is returned in r1
+ *
+ *************************************************************************/
+
+    .section .bootpg,"ax"
+    .globl tlbtab
+
+tlbtab:
+    tlbtab_start
+
+#if (CFG_LARGE_FLASH == 0xffc00000)	/* if booting from large flash */
+    /* large flash */
+    tlbentry( 0xffc00000,         SZ_1M, 0xffc00000,          1, AC_R|AC_W|AC_X|SA_G|SA_I|SA_W )
+    tlbentry( 0xffd00000,         SZ_1M, 0xffd00000,          1, AC_R|AC_W|AC_X|SA_G|SA_I|SA_W )
+    tlbentry( 0xffe00000,         SZ_1M, 0xffe00000,          1, AC_R|AC_W|AC_X|SA_G|SA_I|SA_W )
+    tlbentry( 0xfff00000,         SZ_1M, 0xfff00000,          1, AC_R|AC_W|AC_X|SA_G|SA_I|SA_W )
+
+    tlbentry( 0xff800000,         SZ_1M, 0xff800000,          1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+    tlbentry( 0xff900000,         SZ_1M, 0xff900000,          1, AC_R|AC_W|AC_X|SA_G|SA_I|SA_W )
+#else					/* else booting from small flash */
+    tlbentry( 0xffe00000,         SZ_1M, 0xffe00000,          1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+    tlbentry( 0xfff00000,         SZ_1M, 0xfff00000,          1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+
+    tlbentry( 0xff800000,         SZ_1M, 0xff800000,          1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+    tlbentry( 0xff900000,         SZ_1M, 0xff900000,          1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+    tlbentry( 0xffa00000,         SZ_1M, 0xffa00000,          1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+    tlbentry( 0xffb00000,         SZ_1M, 0xffb00000,          1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+#endif
+
+    tlbentry( CFG_EPLD_BASE,    SZ_256K, 0xff000000,          1, AC_R|AC_W|SA_G|SA_I )
+
+#if (CFG_SRAM_BASE != 0)		/* if SRAM up high and SDRAM at zero */
+    tlbentry( 0x00000000, SZ_256M, 0x00000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
+    tlbentry( 0x10000000, SZ_256M, 0x10000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
+#elif (CFG_SMALL_FLASH == 0xff900000)	/* else SRAM at 0 */
+    tlbentry( 0x00000000,   SZ_1M, 0xff800000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+#elif (CFG_SMALL_FLASH == 0xfff00000)
+    tlbentry( 0x00000000,   SZ_1M, 0xffe00000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+#else
+    #error DONT KNOW SRAM LOCATION
+#endif
+
+    /* internal ram (l2 cache) */
+    tlbentry( CFG_ISRAM_BASE,    SZ_256K, 0x80000000,      0, AC_R|AC_W|AC_X|SA_I )
+
+    /* peripherals at f0000000 */
+    tlbentry( CFG_PERIPHERAL_BASE, SZ_4K, CFG_PERIPHERAL_BASE, 1, AC_R|AC_W|SA_G|SA_I )
+
+    /* PCI */
+#if (CONFIG_COMMANDS & CFG_CMD_PCI)
+    tlbentry( CFG_PCI_BASE,    SZ_256M, 0x00000000, 9, AC_R|AC_W|SA_G|SA_I )
+    tlbentry( CFG_PCI_MEMBASE, SZ_256M, 0x10000000, 9, AC_R|AC_W|SA_G|SA_I )
+#endif
+    tlbtab_end
diff --git a/board/amcc/luan/luan.c b/board/amcc/luan/luan.c
new file mode 100644
index 0000000000..c6b79a9f5f
--- /dev/null
+++ b/board/amcc/luan/luan.c
@@ -0,0 +1,458 @@
+/*
+ * (C) Copyright 2005
+ * John Otken, jotken@softadvances.com
+ *
+ * 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 <ppc4xx.h>
+#include <asm/processor.h>
+#include <spd_sdram.h>
+#include "epld.h"
+
+
+extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+
+/*************************************************************************
+ *  int board_early_init_f()
+ *
+ ************************************************************************/
+int board_early_init_f(void)
+{
+	volatile epld_t *x = (epld_t *) CFG_EPLD_BASE;
+
+	mtebc( pb0ap,  0x03800000 );	/* set chip selects */
+	mtebc( pb0cr,  0xffc58000 );	/* ebc0_b0cr, 4MB at 0xffc00000 CS0 */
+	mtebc( pb1ap,  0x03800000 );
+	mtebc( pb1cr,  0xff018000 );	/* ebc0_b1cr, 1MB at 0xff000000 CS1 */
+	mtebc( pb2ap,  0x03800000 );
+	mtebc( pb2cr,  0xff838000 );	/* ebc0_b2cr, 2MB at 0xff800000 CS2 */
+
+	mtdcr( uic1sr, 0xffffffff );	/* Clear all interrupts */
+	mtdcr( uic1er, 0x00000000 );	/* disable all interrupts */
+	mtdcr( uic1cr, 0x00000000 );	/* Set Critical / Non Critical interrupts */
+	mtdcr( uic1pr, 0x7fff83ff );	/* Set Interrupt Polarities */
+	mtdcr( uic1tr, 0x001f8000 );	/* Set Interrupt Trigger Levels */
+	mtdcr( uic1vr, 0x00000001 );	/* Set Vect base=0,INT31 Highest priority */
+	mtdcr( uic1sr, 0x00000000 );	/* clear all interrupts */
+	mtdcr( uic1sr, 0xffffffff );
+
+	mtdcr( uic0sr, 0xffffffff );	/* Clear all interrupts */
+	mtdcr( uic0er, 0x00000000 );	/* disable all interrupts excepted cascade */
+	mtdcr( uic0cr, 0x00000001 );	/* Set Critical / Non Critical interrupts */
+	mtdcr( uic0pr, 0xffffffff );	/* Set Interrupt Polarities */
+	mtdcr( uic0tr, 0x01000004 );	/* Set Interrupt Trigger Levels */
+	mtdcr( uic0vr, 0x00000001 );	/* Set Vect base=0,INT31 Highest priority */
+	mtdcr( uic0sr, 0x00000000 );	/* clear all interrupts */
+	mtdcr( uic0sr, 0xffffffff );
+
+	x->ethuart &= ~EPLD2_RESET_ETH_N; /* put Ethernet+PHY in reset */
+
+	return  0;
+}
+
+
+/*************************************************************************
+ *  int misc_init_r()
+ *
+ ************************************************************************/
+int misc_init_r(void)
+{
+	volatile epld_t *x = (epld_t *) CFG_EPLD_BASE;
+	x->ethuart |= EPLD2_RESET_ETH_N; /* take Ethernet+PHY out of reset */
+
+	return  0;
+}
+
+
+/*************************************************************************
+ *  int checkboard()
+ *
+ ************************************************************************/
+int checkboard(void)
+{
+	char *s = getenv("serial#");
+
+	printf("Board: Luan - AMCC PPC440SP Evaluation Board");
+
+	if (s != NULL) {
+		puts(", serial# ");
+		puts(s);
+	}
+	putc('\n');
+
+	return  0;
+}
+
+
+/*************************************************************************
+ *  long int fixed_sdram()
+ *
+ ************************************************************************/
+static long int fixed_sdram(void)
+{					/* DDR2 init from BDI2000 script */
+	mtdcr( 0x10, 0x00000021 );	/* MCIF0_MCOPT2 - zero DCEN bit */
+	mtdcr( 0x11, 0x84000000 );
+	mtdcr( 0x10, 0x00000020 );	/* MCIF0_MCOPT1 - no ECC, 64 bits, 4 banks, DDR2 */
+	mtdcr( 0x11, 0x2D122000 );
+	mtdcr( 0x10, 0x00000026 );	/* MCIF0_CODT  - die termination on */
+	mtdcr( 0x11, 0x00800026 );
+	mtdcr( 0x10, 0x00000081 );	/* MCIF0_WRDTR - Write DQS Adv 90 + Fractional DQS Delay */
+	mtdcr( 0x11, 0x82000800 );
+	mtdcr( 0x10, 0x00000080 );	/* MCIF0_CLKTR - advance addr clock by 180 deg */
+	mtdcr( 0x11, 0x80000000 );
+	mtdcr( 0x10, 0x00000040 );	/* MCIF0_MB0CF - turn on CS0, N x 10 coll */
+	mtdcr( 0x11, 0x00000201 );
+	mtdcr( 0x10, 0x00000044 );	/* MCIF0_MB1CF - turn on CS0, N x 10 coll */
+	mtdcr( 0x11, 0x00000201 );
+	mtdcr( 0x10, 0x00000030 );	/* MCIF0_RTR   - refresh every 7.8125uS */
+	mtdcr( 0x11, 0x08200000 );
+	mtdcr( 0x10, 0x00000085 );	/* MCIF0_SDTR1 - timing register 1 */
+	mtdcr( 0x11, 0x80201000 );
+	mtdcr( 0x10, 0x00000086 );	/* MCIF0_SDTR2 - timing register 2 */
+	mtdcr( 0x11, 0x42103242 );
+	mtdcr( 0x10, 0x00000087 );	/* MCIF0_SDTR3 - timing register 3 */
+	mtdcr( 0x11, 0x0C100D14 );
+	mtdcr( 0x10, 0x00000088 );	/* MCIF0_MMODE - CAS is 4 cycles */
+	mtdcr( 0x11, 0x00000642 );
+	mtdcr( 0x10, 0x00000089 );	/* MCIF0_MEMODE - diff DQS disabled */
+	mtdcr( 0x11, 0x00000400 );	/*		  ODT term disabled */
+
+	mtdcr( 0x10, 0x00000050 );	/* MCIF0_INITPLR0 - NOP */
+	mtdcr( 0x11, 0x81b80000 );
+	mtdcr( 0x10, 0x00000051 );	/* MCIF0_INITPLR1 - PRE */
+	mtdcr( 0x11, 0x82100400 );
+	mtdcr( 0x10, 0x00000052 );	/* MCIF0_INITPLR2 - EMR2 */
+	mtdcr( 0x11, 0x80820000 );
+	mtdcr( 0x10, 0x00000053 );	/* MCIF0_INITPLR3 - EMR3 */
+	mtdcr( 0x11, 0x80830000 );
+	mtdcr( 0x10, 0x00000054 );	/* MCIF0_INITPLR4 - EMR DLL ENABLE */
+	mtdcr( 0x11, 0x80810000 );
+	mtdcr( 0x10, 0x00000055 );	/* MCIF0_INITPLR5 - MR DLL RESET */
+	mtdcr( 0x11, 0x80800542 );
+	mtdcr( 0x10, 0x00000056 );	/* MCIF0_INITPLR6 - PRE */
+	mtdcr( 0x11, 0x82100400 );
+	mtdcr( 0x10, 0x00000057 );	/* MCIF0_INITPLR7 - refresh */
+	mtdcr( 0x11, 0x99080000 );
+	mtdcr( 0x10, 0x00000058 );	/* MCIF0_INITPLR8 */
+	mtdcr( 0x11, 0x99080000 );
+	mtdcr( 0x10, 0x00000059 );	/* MCIF0_INITPLR9 */
+	mtdcr( 0x11, 0x99080000 );
+	mtdcr( 0x10, 0x0000005A );	/* MCIF0_INITPLR10 */
+	mtdcr( 0x11, 0x99080000 );
+	mtdcr( 0x10, 0x0000005B );	/* MCIF0_INITPLR11 - MR */
+	mtdcr( 0x11, 0x80800442 );
+	mtdcr( 0x10, 0x0000005C );	/* MCIF0_INITPLR12 - EMR OCD Default */
+	mtdcr( 0x11, 0x80810380 );
+	mtdcr( 0x10, 0x0000005D );	/* MCIF0_INITPLR13 - EMR OCD exit */
+	mtdcr( 0x11, 0x80810000 );
+	udelay( 10*1000 );
+
+	mtdcr( 0x10, 0x00000021 );	/* MCIF0_MCOPT2 - execute preloaded init */
+	mtdcr( 0x11, 0x28000000 );	/*		  set DC_EN */
+	udelay( 100*1000 );
+
+	mtdcr( 0x40, 0x0000F800 );	/* MQ0_B0BAS: base addr 00000000 / 256MB */
+	mtdcr( 0x41, 0x1000F800 );	/* MQ0_B1BAS: base addr 10000000 / 256MB */
+
+	mtdcr( 0x10, 0x00000078 );	/* MCIF0_RDCC - auto set read stage */
+	mtdcr( 0x11, 0x00000000 );
+	mtdcr( 0x10, 0x00000070 );	/* MCIF0_RQDC - read DQS delay control */
+	mtdcr( 0x11, 0x8000003A );	/*		enabled, frac DQS delay */
+	mtdcr( 0x10, 0x00000074 );	/* MCIF0_RFDC - two clock feedback delay */
+	mtdcr( 0x11, 0x00000200 );
+
+	return  512 << 20;
+}
+
+
+/*************************************************************************
+ *  long int initdram
+ *
+ ************************************************************************/
+long int initdram( int board_type )
+{
+	long dram_size = 0;
+
+#if defined(CONFIG_SPD_EEPROM)
+	dram_size = spd_sdram (0);
+#else
+	dram_size = fixed_sdram ();
+#endif
+
+	return  dram_size;
+}
+
+
+/*************************************************************************
+ *  int testdram()
+ *
+ ************************************************************************/
+#if defined(CFG_DRAM_TEST)
+int testdram(void)
+{
+	unsigned long *mem = (unsigned long *) 0;
+	const unsigned long kend = (1024 / sizeof(unsigned long));
+	unsigned long k, n;
+
+	mtmsr(0);
+
+	for (k = 0; k < CFG_KBYTES_SDRAM;
+	     ++k, mem += (1024 / sizeof(unsigned long))) {
+		if ((k & 1023) == 0) {
+			printf("%3d MB\r", k / 1024);
+		}
+
+		memset(mem, 0xaaaaaaaa, 1024);
+		for (n = 0; n < kend; ++n) {
+			if (mem[n] != 0xaaaaaaaa) {
+				printf("SDRAM test fails at: %08x\n",
+				       (uint) & mem[n]);
+				return 1;
+			}
+		}
+
+		memset(mem, 0x55555555, 1024);
+		for (n = 0; n < kend; ++n) {
+			if (mem[n] != 0x55555555) {
+				printf("SDRAM test fails at: %08x\n",
+				       (uint) & mem[n]);
+				return 1;
+			}
+		}
+	}
+	printf("SDRAM test passes\n");
+
+	return  0;
+}
+#endif
+
+
+/*************************************************************************
+ *  pci_pre_init
+ *
+ *  This routine is called just prior to registering the hose and gives
+ *  the board the opportunity to check things. Returning a value of zero
+ *  indicates that things are bad & PCI initialization should be aborted.
+ *
+ *	Different boards may wish to customize the pci controller structure
+ *	(add regions, override default access routines, etc) or perform
+ *	certain pre-initialization actions.
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT)
+int pci_pre_init( struct pci_controller *hose )
+{
+	unsigned long strap;
+
+	/*--------------------------------------------------------------------------+
+	 *	The luan board is always configured as the host & requires the
+	 *	PCI arbiter to be enabled.
+	 *--------------------------------------------------------------------------*/
+	mfsdr(sdr_sdstp1, strap);
+	if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ) {
+		printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
+
+		return  0;
+	}
+
+	return  1;
+}
+#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
+
+
+/*************************************************************************
+ *  pci_target_init
+ *
+ *	The bootstrap configuration provides default settings for the pci
+ *	inbound map (PIM). But the bootstrap config choices are limited and
+ *	may not be sufficient for a given board.
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
+void pci_target_init(struct pci_controller *hose)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	/*--------------------------------------------------------------------------+
+	 * Disable everything
+	 *--------------------------------------------------------------------------*/
+	out32r( PCIX0_PIM0SA, 0 ); /* disable */
+	out32r( PCIX0_PIM1SA, 0 ); /* disable */
+	out32r( PCIX0_PIM2SA, 0 ); /* disable */
+	out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
+
+	/*--------------------------------------------------------------------------+
+	 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
+	 * options to not support sizes such as 128/256 MB.
+	 *--------------------------------------------------------------------------*/
+	out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
+	out32r( PCIX0_PIM0LAH, 0 );
+	out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
+
+	out32r( PCIX0_BAR0, 0 );
+
+	/*--------------------------------------------------------------------------+
+	 * Program the board's subsystem id/vendor id
+	 *--------------------------------------------------------------------------*/
+	out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
+	out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
+
+	out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
+}
+#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
+
+
+/*************************************************************************
+ *  is_pci_host
+ *
+ *	This routine is called to determine if a pci scan should be
+ *	performed. With various hardware environments (especially cPCI and
+ *	PPMC) it's insufficient to depend on the state of the arbiter enable
+ *	bit in the strap register, or generic host/adapter assumptions.
+ *
+ *	Rather than hard-code a bad assumption in the general 440 code, the
+ *	440 pci code requires the board to decide at runtime.
+ *
+ *	Return 0 for adapter mode, non-zero for host (monarch) mode.
+ *
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI)
+int is_pci_host(struct pci_controller *hose)
+{
+	return  1;
+}
+#endif				/* defined(CONFIG_PCI) */
+
+
+/*************************************************************************
+ *  hw_watchdog_reset
+ *
+ *	This routine is called to reset (keep alive) the watchdog timer
+ *
+ ************************************************************************/
+#if defined(CONFIG_HW_WATCHDOG)
+void hw_watchdog_reset(void)
+{
+}
+#endif
+
+
+/*************************************************************************
+ *  int on_off()
+ *
+ ************************************************************************/
+static int on_off( const char *s )
+{
+	if (strcmp(s, "on") == 0) {
+		return  1;
+	} else if (strcmp(s, "off") == 0) {
+		return  0;
+	}
+	return  -1;
+}
+
+
+/*************************************************************************
+ *  void l2cache_disable()
+ *
+ ************************************************************************/
+static void l2cache_disable(void)
+{
+	mtdcr( l2_cache_cfg, 0 );
+}
+
+
+/*************************************************************************
+ *  void l2cache_enable()
+ *
+ ************************************************************************/
+static void l2cache_enable(void)	/* see p258 7.4.1 Enabling L2 Cache */
+{
+	mtdcr( l2_cache_cfg, 0x80000000 );	/* enable L2_MODE L2_CFG[L2M] */
+
+	mtdcr( l2_cache_addr, 0 );		/* set L2_ADDR with all zeros */
+
+	mtdcr( l2_cache_cmd, 0x80000000 );	/* issue HCLEAR command via L2_CMD */
+
+	while (!(mfdcr( l2_cache_stat ) & 0x80000000 ))  ;; /* poll L2_SR for completion */
+
+	mtdcr( l2_cache_cmd, 0x10000000 );	/* clear cache errors L2_CMD[CCP] */
+
+	mtdcr( l2_cache_cmd, 0x08000000 );	/* clear tag errors L2_CMD[CTE] */
+
+	mtdcr( l2_cache_snp0, 0 );		/* snoop registers */
+	mtdcr( l2_cache_snp1, 0 );
+
+	__asm__ volatile ("sync");		/* msync */
+
+	mtdcr( l2_cache_cfg, 0xe0000000 );	/* inst and data use L2 */
+
+	__asm__ volatile ("sync");
+}
+
+
+/*************************************************************************
+ *  int l2cache_status()
+ *
+ ************************************************************************/
+static int l2cache_status(void)
+{
+	return  (mfdcr( l2_cache_cfg ) & 0x60000000) != 0;
+}
+
+
+/*************************************************************************
+ *  int do_l2cache()
+ *
+ ************************************************************************/
+int do_l2cache( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] )
+{
+	switch (argc) {
+	case 2:			/* on / off	*/
+		switch (on_off(argv[1])) {
+		case 0:	l2cache_disable();
+			break;
+		case 1:	l2cache_enable();
+			break;
+		}
+		/* FALL TROUGH */
+	case 1:			/* get status */
+		printf ("L2 Cache is %s\n",
+			l2cache_status() ? "ON" : "OFF");
+		return 0;
+	default:
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	return  0;
+}
+
+
+U_BOOT_CMD(
+	l2cache,   2,   1,     do_l2cache,
+	"l2cache  - enable or disable L2 cache\n",
+	"[on, off]\n"
+	"    - enable or disable L2 cache\n"
+	);
diff --git a/board/amcc/luan/u-boot.lds b/board/amcc/luan/u-boot.lds
new file mode 100644
index 0000000000..24a0fde519
--- /dev/null
+++ b/board/amcc/luan/u-boot.lds
@@ -0,0 +1,156 @@
+/*
+ * (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
+ */
+
+OUTPUT_ARCH(powerpc)
+SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/powerpc-any-elf/lib);
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+SECTIONS
+{
+  .resetvec 0xFFFFFFFC :
+  {
+    *(.resetvec)
+  } = 0xffff
+
+  .bootpg 0xFFFFF000 :
+  {
+    cpu/ppc4xx/start.o	(.bootpg)
+  } = 0xffff
+
+  /* Read-only sections, merged into text segment: */
+  . = + SIZEOF_HEADERS;
+  .interp : { *(.interp) }
+  .hash          : { *(.hash)		}
+  .dynsym        : { *(.dynsym)		}
+  .dynstr        : { *(.dynstr)		}
+  .rel.text      : { *(.rel.text)		}
+  .rela.text     : { *(.rela.text) 	}
+  .rel.data      : { *(.rel.data)		}
+  .rela.data     : { *(.rela.data) 	}
+  .rel.rodata    : { *(.rel.rodata) 	}
+  .rela.rodata   : { *(.rela.rodata) 	}
+  .rel.got       : { *(.rel.got)		}
+  .rela.got      : { *(.rela.got)		}
+  .rel.ctors     : { *(.rel.ctors)	}
+  .rela.ctors    : { *(.rela.ctors)	}
+  .rel.dtors     : { *(.rel.dtors)	}
+  .rela.dtors    : { *(.rela.dtors)	}
+  .rel.bss       : { *(.rel.bss)		}
+  .rela.bss      : { *(.rela.bss)		}
+  .rel.plt       : { *(.rel.plt)		}
+  .rela.plt      : { *(.rela.plt)		}
+  .init          : { *(.init)	}
+  .plt : { *(.plt) }
+  .text      :
+  {
+    /* WARNING - the following is hand-optimized to fit within	*/
+    /* the sector layout of our flash chips!	XXX FIXME XXX	*/
+
+    cpu/ppc4xx/start.o	(.text)
+    board/amcc/luan/init.o	(.text)
+    cpu/ppc4xx/kgdb.o	(.text)
+    cpu/ppc4xx/traps.o	(.text)
+    cpu/ppc4xx/interrupts.o	(.text)
+    cpu/ppc4xx/serial.o	(.text)
+    cpu/ppc4xx/cpu_init.o	(.text)
+    cpu/ppc4xx/speed.o	(.text)
+    common/dlmalloc.o	(.text)
+    lib_generic/crc32.o		(.text)
+    lib_ppc/extable.o	(.text)
+    lib_generic/zlib.o		(.text)
+
+/*    . = env_offset;*/
+/*    common/environment.o(.text)*/
+
+    *(.text)
+    *(.fixup)
+    *(.got1)
+  }
+  _etext = .;
+  PROVIDE (etext = .);
+  .rodata    :
+  {
+    *(.rodata)
+    *(.rodata1)
+    *(.rodata.str1.4)
+  }
+  .fini      : { *(.fini)    } =0
+  .ctors     : { *(.ctors)   }
+  .dtors     : { *(.dtors)   }
+
+  /* Read-write section, merged into data segment: */
+  . = (. + 0x00FF) & 0xFFFFFF00;
+  _erotext = .;
+  PROVIDE (erotext = .);
+  .reloc   :
+  {
+    *(.got)
+    _GOT2_TABLE_ = .;
+    *(.got2)
+    _FIXUP_TABLE_ = .;
+    *(.fixup)
+  }
+  __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
+  __fixup_entries = (. - _FIXUP_TABLE_)>>2;
+
+  .data    :
+  {
+    *(.data)
+    *(.data1)
+    *(.sdata)
+    *(.sdata2)
+    *(.dynamic)
+    CONSTRUCTORS
+  }
+  _edata  =  .;
+  PROVIDE (edata = .);
+
+  . = .;
+  __u_boot_cmd_start = .;
+  .u_boot_cmd : { *(.u_boot_cmd) }
+  __u_boot_cmd_end = .;
+
+
+  . = .;
+  __start___ex_table = .;
+  __ex_table : { *(__ex_table) }
+  __stop___ex_table = .;
+
+  . = ALIGN(256);
+  __init_begin = .;
+  .text.init : { *(.text.init) }
+  .data.init : { *(.data.init) }
+  . = ALIGN(256);
+  __init_end = .;
+
+  __bss_start = .;
+  .bss       :
+  {
+   *(.sbss) *(.scommon)
+   *(.dynbss)
+   *(.bss)
+   *(COMMON)
+  }
+  _end = . ;
+  PROVIDE (end = .);
+}