Major cleanup for AMCC PPC4xx eval boards.

Patch by Stefan Roese, 01 Aug 2005

6 files changed, 779 insertions, 0 deletions

diff --git a/board/amcc/ebony/Makefile b/board/amcc/ebony/Makefile
new file mode 100644
index 0000000..4a3927b
--- /dev/null
+++ b/board/amcc/ebony/Makefile
@@ -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
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= lib$(BOARD).a
+
+OBJS	= $(BOARD).o flash.o
+SOBJS	= init.o
+
+$(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) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/board/amcc/ebony/config.mk b/board/amcc/ebony/config.mk
new file mode 100644
index 0000000..e5722dd
--- /dev/null
+++ b/board/amcc/ebony/config.mk
@@ -0,0 +1,44 @@
+#
+# (C) Copyright 2002
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+#
+# esd ADCIOP boards
+#
+
+#TEXT_BASE = 0xFFFE0000
+
+ifeq ($(ramsym),1)
+TEXT_BASE = 0x07FD0000
+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/ebony/ebony.c b/board/amcc/ebony/ebony.c
new file mode 100644
index 0000000..f6bb837
--- /dev/null
+++ b/board/amcc/ebony/ebony.c
@@ -0,0 +1,297 @@
+/*
+ *  Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.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 <asm/processor.h>
+#include <spd_sdram.h>
+
+#define BOOT_SMALL_FLASH	32	/* 00100000 */
+#define FLASH_ONBD_N		2	/* 00000010 */
+#define FLASH_SRAM_SEL		1	/* 00000001 */
+
+long int fixed_sdram(void);
+
+int board_early_init_f(void)
+{
+	uint reg;
+	unsigned char *fpga_base = (unsigned char *)CFG_FPGA_BASE;
+	unsigned char status;
+
+	/*--------------------------------------------------------------------
+	 * Setup the external bus controller/chip selects
+	 *-------------------------------------------------------------------*/
+	mtdcr(ebccfga, xbcfg);
+	reg = mfdcr(ebccfgd);
+	mtdcr(ebccfgd, reg | 0x04000000);	/* Set ATC */
+
+	mtebc(pb1ap, 0x02815480);	/* NVRAM/RTC */
+	mtebc(pb1cr, 0x48018000);	/* BA=0x480 1MB R/W 8-bit */
+	mtebc(pb7ap, 0x01015280);	/* FPGA registers */
+	mtebc(pb7cr, 0x48318000);	/* BA=0x483 1MB R/W 8-bit */
+
+	/* read FPGA_REG0  and set the bus controller */
+	status = *fpga_base;
+	if ((status & BOOT_SMALL_FLASH) && !(status & FLASH_ONBD_N)) {
+		mtebc(pb0ap, 0x9b015480);	/* FLASH/SRAM */
+		mtebc(pb0cr, 0xfff18000);	/* BAS=0xfff 1MB R/W 8-bit */
+		mtebc(pb2ap, 0x9b015480);	/* 4MB FLASH */
+		mtebc(pb2cr, 0xff858000);	/* BAS=0xff8 4MB R/W 8-bit */
+	} else {
+		mtebc(pb0ap, 0x9b015480);	/* 4MB FLASH */
+		mtebc(pb0cr, 0xffc58000);	/* BAS=0xffc 4MB R/W 8-bit */
+
+		/* set CS2 if FLASH_ONBD_N == 0 */
+		if (!(status & FLASH_ONBD_N)) {
+			mtebc(pb2ap, 0x9b015480);	/* FLASH/SRAM */
+			mtebc(pb2cr, 0xff818000);	/* BAS=0xff8 4MB R/W 8-bit */
+		}
+	}
+
+	/*--------------------------------------------------------------------
+	 * Setup the interrupt controller polarities, triggers, etc.
+	 *-------------------------------------------------------------------*/
+	mtdcr(uic0sr, 0xffffffff);	/* clear all */
+	mtdcr(uic0er, 0x00000000);	/* disable all */
+	mtdcr(uic0cr, 0x00000009);	/* SMI & UIC1 crit are critical */
+	mtdcr(uic0pr, 0xfffffe13);	/* per ref-board manual */
+	mtdcr(uic0tr, 0x01c00008);	/* per ref-board manual */
+	mtdcr(uic0vr, 0x00000001);	/* int31 highest, base=0x000 */
+	mtdcr(uic0sr, 0xffffffff);	/* clear all */
+
+	mtdcr(uic1sr, 0xffffffff);	/* clear all */
+	mtdcr(uic1er, 0x00000000);	/* disable all */
+	mtdcr(uic1cr, 0x00000000);	/* all non-critical */
+	mtdcr(uic1pr, 0xffffe0ff);	/* per ref-board manual */
+	mtdcr(uic1tr, 0x00ffc000);	/* per ref-board manual */
+	mtdcr(uic1vr, 0x00000001);	/* int31 highest, base=0x000 */
+	mtdcr(uic1sr, 0xffffffff);	/* clear all */
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	sys_info_t sysinfo;
+	unsigned char *s = getenv("serial#");
+
+	get_sys_info(&sysinfo);
+
+	printf("Board: Ebony - AMCC PPC440GP Evaluation Board");
+	if (s != NULL) {
+		puts(", serial# ");
+		puts(s);
+	}
+	putc('\n');
+
+	printf("\tVCO: %lu MHz\n", sysinfo.freqVCOMhz / 1000000);
+	printf("\tCPU: %lu MHz\n", sysinfo.freqProcessor / 1000000);
+	printf("\tPLB: %lu MHz\n", sysinfo.freqPLB / 1000000);
+	printf("\tOPB: %lu MHz\n", sysinfo.freqOPB / 1000000);
+	printf("\tEPB: %lu MHz\n", sysinfo.freqEPB / 1000000);
+	return (0);
+}
+
+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;
+}
+
+#if defined(CFG_DRAM_TEST)
+int testdram(void)
+{
+	uint *pstart = (uint *) 0x00000000;
+	uint *pend = (uint *) 0x08000000;
+	uint *p;
+
+	for (p = pstart; p < pend; p++)
+		*p = 0xaaaaaaaa;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0xaaaaaaaa) {
+			printf("SDRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+
+	for (p = pstart; p < pend; p++)
+		*p = 0x55555555;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0x55555555) {
+			printf("SDRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+	return 0;
+}
+#endif
+
+#if !defined(CONFIG_SPD_EEPROM)
+/*************************************************************************
+ *  fixed sdram init -- doesn't use serial presence detect.
+ *
+ *  Assumes:    128 MB, non-ECC, non-registered
+ *              PLB @ 133 MHz
+ *
+ ************************************************************************/
+long int fixed_sdram(void)
+{
+	uint reg;
+
+	/*--------------------------------------------------------------------
+	 * Setup some default
+	 *------------------------------------------------------------------*/
+	mtsdram(mem_uabba, 0x00000000);	/* ubba=0 (default)             */
+	mtsdram(mem_slio, 0x00000000);	/* rdre=0 wrre=0 rarw=0         */
+	mtsdram(mem_devopt, 0x00000000);	/* dll=0 ds=0 (normal)          */
+	mtsdram(mem_wddctr, 0x00000000);	/* wrcp=0 dcd=0                 */
+	mtsdram(mem_clktr, 0x40000000);	/* clkp=1 (90 deg wr) dcdt=0    */
+
+	/*--------------------------------------------------------------------
+	 * Setup for board-specific specific mem
+	 *------------------------------------------------------------------*/
+	/*
+	 * Following for CAS Latency = 2.5 @ 133 MHz PLB
+	 */
+	mtsdram(mem_b0cr, 0x000a4001);	/* SDBA=0x000 128MB, Mode 3, enabled */
+	mtsdram(mem_tr0, 0x410a4012);	/* WR=2  WD=1 CL=2.5 PA=3 CP=4 LD=2 */
+	/* RA=10 RD=3                       */
+	mtsdram(mem_tr1, 0x8080082f);	/* SS=T2 SL=STAGE 3 CD=1 CT=0x02f   */
+	mtsdram(mem_rtr, 0x08200000);	/* Rate 15.625 ns @ 133 MHz PLB     */
+	mtsdram(mem_cfg1, 0x00000000);	/* Self-refresh exit, disable PM    */
+	udelay(400);		/* Delay 200 usecs (min)            */
+
+	/*--------------------------------------------------------------------
+	 * Enable the controller, then wait for DCEN to complete
+	 *------------------------------------------------------------------*/
+	mtsdram(mem_cfg0, 0x86000000);	/* DCEN=1, PMUD=1, 64-bit           */
+	for (;;) {
+		mfsdram(mem_mcsts, reg);
+		if (reg & 0x80000000)
+			break;
+	}
+
+	return (128 * 1024 * 1024);	/* 128 MB                           */
+}
+#endif				/* !defined(CONFIG_SPD_EEPROM) */
+
+/*************************************************************************
+ *  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 ebony board is always configured as the host & requires the
+     *	PCI arbiter to be enabled.
+	 *--------------------------------------------------------------------------*/
+	strap = mfdcr(cpc0_strp1);
+	if ((strap & 0x00100000) == 0) {
+		printf("PCI: CPC0_STRP1[PAE] not set.\n");
+		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)
+{
+	/* The ebony board is always configured as host. */
+	return (1);
+}
+#endif				/* defined(CONFIG_PCI) */
diff --git a/board/amcc/ebony/flash.c b/board/amcc/ebony/flash.c
new file mode 100644
index 0000000..e8fbbc4
--- /dev/null
+++ b/board/amcc/ebony/flash.c
@@ -0,0 +1,140 @@
+/*
+ * (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 */
+
+#define     BOOT_SMALL_FLASH        32	/* 00100000 */
+#define     FLASH_ONBD_N            2	/* 00000010 */
+#define     FLASH_SRAM_SEL          1	/* 00000001 */
+
+#define     BOOT_SMALL_FLASH_VAL    4
+#define     FLASH_ONBD_N_VAL        2
+#define     FLASH_SRAM_SEL_VAL      1
+
+static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = {
+	{0xffc00000, 0xffe00000, 0xff880000},	/* 0:000: configuraton 3 */
+	{0xffc00000, 0xffe00000, 0xff800000},	/* 1:001: configuraton 4 */
+	{0xffc00000, 0xffe00000, 0x00000000},	/* 2:010: configuraton 7 */
+	{0xffc00000, 0xffe00000, 0x00000000},	/* 3:011: configuraton 8 */
+	{0xff800000, 0xffa00000, 0xfff80000},	/* 4:100: configuraton 1 */
+	{0xff800000, 0xffa00000, 0xfff00000},	/* 5:101: configuraton 2 */
+	{0xffc00000, 0xffe00000, 0x00000000},	/* 6:110: configuraton 5 */
+	{0xffc00000, 0xffe00000, 0x00000000}	/* 7:111: configuraton 6 */
+};
+
+/*
+ * 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 char *fpga_base = (unsigned char *)CFG_FPGA_BASE;
+	unsigned char switch_status;
+	unsigned short index = 0;
+	int i;
+
+	/* read FPGA base register FPGA_REG0 */
+	switch_status = *fpga_base;
+
+	/* check the bitmap of switch status */
+	if (switch_status & BOOT_SMALL_FLASH) {
+		index += BOOT_SMALL_FLASH_VAL;
+	}
+	if (switch_status & FLASH_ONBD_N) {
+		index += FLASH_ONBD_N_VAL;
+	}
+	if (switch_status & FLASH_SRAM_SEL) {
+		index += FLASH_SRAM_SEL_VAL;
+	}
+
+	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/ebony/init.S b/board/amcc/ebony/init.S
new file mode 100644
index 0000000..cc8f8b4
--- /dev/null
+++ b/board/amcc/ebony/init.S
@@ -0,0 +1,96 @@
+/*
+*  Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.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 <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
+    tlbentry( 0xf0000000, SZ_256M, 0xf0000000, 1, AC_R|AC_W|AC_X|SA_G|SA_I)
+    tlbentry( CFG_PERIPHERAL_BASE, SZ_256M, 0x40000000, 1, AC_R|AC_W|SA_G|SA_I)
+    tlbentry( CFG_ISRAM_BASE, SZ_4K, 0x80000000, 0, AC_R|AC_W|AC_X )
+    tlbentry( CFG_ISRAM_BASE + 0x1000, SZ_4K, 0x80001000, 0, AC_R|AC_W|AC_X )
+    tlbentry( CFG_SDRAM_BASE, SZ_256M, 0x00000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
+    tlbentry( CFG_PCI_BASE, SZ_256M, 0x00000000, 2, AC_R|AC_W|SA_G|SA_I )
+    tlbentry( CFG_PCI_MEMBASE, SZ_256M, 0x00000000, 3, AC_R|AC_W|SA_G|SA_I )
+    tlbtab_end
diff --git a/board/amcc/ebony/u-boot.lds b/board/amcc/ebony/u-boot.lds
new file mode 100644
index 0000000..0ec3fad
--- /dev/null
+++ b/board/amcc/ebony/u-boot.lds
@@ -0,0 +1,155 @@
+/*
+ * (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/ebony/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)
+    cpu/ppc4xx/405gp_enet.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 = .);
+}