Patchwork [U-Boot,v4,4/4] mpc85xx: Add board support for the eXMeritus HWW-1U-1A devices

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Submitter Kyle Moffett
Date Feb. 23, 2011, 7:31 p.m.
Message ID <1298489513-12527-1-git-send-email-Kyle.D.Moffett@boeing.com>
Download mbox | patch
Permalink /patch/84227/
State Superseded
Headers show

Comments

Kyle Moffett - Feb. 23, 2011, 7:31 p.m.
The eXMeritus HWW-1U-1A unit is a DO-160-certified 13lb 1U chassis
with 3 independent TEMPEST zones.  Two independent P2020 computers may
be found inside each zone.  Complete hardware support is included.

High-level hardware overview:
  * DO-160 certified for passenger aircraft (noncritical)
  * TEMPEST ceritified for RED/BLACK separation
  * 3 zones per chassis, 2 computers per zone (total of 6)
  * Dual-core 1.066GHz P2020 per computer
  * One 2GB DDR2 SO-RDIMM module per computer (upgradable to 4GB)
  * Removable 80GB or 160GB Intel X18-M SSD per computer
  * Front-accessible dual-port E1000E per computer
  * Front-accessible serial console per computer
  * Front-accessible USB port per computer
  * Internal Gigabit crossover within each TEMPEST zone
  * Internal unidirectional fiber links across TEMPEST zones
  * Battery-backed DS1339 I2C RTC on each CPU.

Combined, each 13lb 1U chassis contains 12GB RAM, 12 cores @ 1.066GHz,
12 front-accessible Gigabit Ethernet ports and 960GB of solid-state
storage with a total power consumption of ~200W.

Additional notes:
  * SPD detection is only known to work with the DO-160-certified DIMMs

  * A U-Boot built with 36-bit address-space seems to work, but I don't
    yet have a usable 36-bit kernel or DTB, so it's mostly untested.

  * CPU reset is a little quirky due to hardware misfeature, see the
    extensive comments in the board_reset() function in hww1u1a.c

Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Cc: Andy Fleming <afleming@gmail.com>
Cc: Kumar Gala <kumar.gala@freescale.com>
---
 MAINTAINERS                       |    4 +
 board/exmeritus/hww1u1a/Makefile  |   54 ++++
 board/exmeritus/hww1u1a/ddr.c     |   51 ++++
 board/exmeritus/hww1u1a/gpios.h   |   67 +++++
 board/exmeritus/hww1u1a/hww1u1a.c |  549 +++++++++++++++++++++++++++++++++++++
 board/exmeritus/hww1u1a/law.c     |   34 +++
 board/exmeritus/hww1u1a/tlb.c     |  106 +++++++
 boards.cfg                        |    2 +
 include/configs/HWW1U1A.h         |  474 ++++++++++++++++++++++++++++++++
 9 files changed, 1341 insertions(+), 0 deletions(-)
 create mode 100644 board/exmeritus/hww1u1a/Makefile
 create mode 100644 board/exmeritus/hww1u1a/ddr.c
 create mode 100644 board/exmeritus/hww1u1a/gpios.h
 create mode 100644 board/exmeritus/hww1u1a/hww1u1a.c
 create mode 100644 board/exmeritus/hww1u1a/law.c
 create mode 100644 board/exmeritus/hww1u1a/tlb.c
 create mode 100644 include/configs/HWW1U1A.h

Patch

diff --git a/MAINTAINERS b/MAINTAINERS
index 07541bd..5da7c1f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -320,6 +320,10 @@  Reinhard Meyer <reinhard.meyer@emk-elektronik.de>
 	TOP5200		MPC5200
 	TOP9000		ARM926EJS (AT91SAM9xxx SoC)
 
+Kyle Moffett <Kyle.D.Moffett@boeing.com>
+
+	HWW1U1A		P2020
+
 Tolunay Orkun <torkun@nextio.com>
 
 	csb272		PPC405GP
diff --git a/board/exmeritus/hww1u1a/Makefile b/board/exmeritus/hww1u1a/Makefile
new file mode 100644
index 0000000..b927f59
--- /dev/null
+++ b/board/exmeritus/hww1u1a/Makefile
@@ -0,0 +1,54 @@ 
+#
+# Copyright 2007-2009 Freescale Semiconductor, Inc.
+# (C) Copyright 2001-2006
+# 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	= $(obj)lib$(BOARD).o
+
+COBJS-y	+= $(BOARD).o
+COBJS-y	+= law.o
+COBJS-y	+= tlb.o
+COBJS-$(CONFIG_DDR_SPD) += ddr.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS-y))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+clean:
+	rm -f $(OBJS) $(SOBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/exmeritus/hww1u1a/ddr.c b/board/exmeritus/hww1u1a/ddr.c
new file mode 100644
index 0000000..dbdcc86
--- /dev/null
+++ b/board/exmeritus/hww1u1a/ddr.c
@@ -0,0 +1,51 @@ 
+/*
+ * Copyright 2009-2010 eXMeritus, A Boeing Company
+ * Copyright 2008-2009 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * Version 2 as published by the Free Software Foundation.
+ */
+
+#include <common.h>
+#include <i2c.h>
+
+#include <asm/fsl_ddr_sdram.h>
+#include <asm/fsl_ddr_dimm_params.h>
+
+unsigned int fsl_ddr_get_mem_data_rate(void)
+{
+	return get_ddr_freq(0);
+}
+
+void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
+		      unsigned int ctrl_num)
+{
+	/* We only have one DIMM slot */
+	if (ctrl_num != 0)
+		return;
+
+	i2c_read(SPD_EEPROM_ADDRESS1, 0, 1, (uchar *)&ctrl_dimms_spd[0],
+			sizeof(generic_spd_eeprom_t));
+}
+
+void fsl_ddr_board_options(memctl_options_t *popts,
+				dimm_params_t *pdimm,
+				unsigned int ctrl_num)
+{
+	/*
+	 * We only support one DIMM, so according to the P2020 docs we should
+	 * set the options as follows:
+	 */
+	popts->cs_local_opts[0].odt_rd_cfg = 0;
+	popts->cs_local_opts[0].odt_wr_cfg = 4;
+	popts->cs_local_opts[1].odt_rd_cfg = 0;
+	popts->cs_local_opts[1].odt_wr_cfg = 0;
+	popts->half_strength_driver_enable = 0;
+
+	/* Manually configured for our static clock rate */
+	popts->clk_adjust = 4;
+	popts->cpo_override = 4;
+	popts->write_data_delay = 2;
+	popts->twoT_en = 0;
+}
diff --git a/board/exmeritus/hww1u1a/gpios.h b/board/exmeritus/hww1u1a/gpios.h
new file mode 100644
index 0000000..fa383a6
--- /dev/null
+++ b/board/exmeritus/hww1u1a/gpios.h
@@ -0,0 +1,67 @@ 
+/*
+ * Copyright 2010 eXMeritus, A Boeing Company
+ *
+ * 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 <asm/mpc85xx_gpio.h>
+
+/* Common CPU A/B GPIOs (GPIO8-GPIO15 and IRQ4-IRQ6) */
+#define GPIO_CPU_ID		(1UL << (31 -  8))
+#define GPIO_BLUE_LED		(1UL << (31 -  9))
+#define GPIO_DIMM_RESET		(1UL << (31 - 10))
+#define GPIO_USB_RESET		(1UL << (31 - 11))
+#define GPIO_UNUSED_12		(1UL << (31 - 12))
+#define GPIO_GETH0_RESET	(1UL << (31 - 13))
+#define GPIO_RS422_RE		(1UL << (31 - 14))
+#define GPIO_RS422_DE		(1UL << (31 - 15))
+#define IRQ_I2CINT		(1UL << (31 - 20))
+#define IRQ_FANINT		(1UL << (31 - 21))
+#define IRQ_DIMM_EVENT		(1UL << (31 - 22))
+
+/* CPU A GPIOS (GPIO0-GPIO7 and IRQ0-IRQ3) */
+#define GPIO_CPUA_UNUSED_0	(1UL << (31 -  0))
+#define GPIO_CPUA_CPU_READY	(1UL << (31 -  1))
+#define GPIO_CPUA_DEBUG_LED2	(1UL << (31 -  2))
+#define GPIO_CPUA_DEBUG_LED1	(1UL << (31 -  3))
+#define GPIO_CPUA_TDIS2B	(1UL << (31 -  4)) /* MAC 2 TX B */
+#define GPIO_CPUA_TDIS2A	(1UL << (31 -  5)) /* MAC 2 TX A */
+#define GPIO_CPUA_TDIS1B	(1UL << (31 -  6)) /* MAC 1 TX B */
+#define GPIO_CPUA_TDIS1A	(1UL << (31 -  7)) /* MAC 1 TX A */
+#define IRQ_CPUA_UNUSED_0	(1UL << (31 - 16))
+#define IRQ_CPUA_UNUSED_1	(1UL << (31 - 17))
+#define IRQ_CPUA_UNUSED_2	(1UL << (31 - 18))
+#define IRQ_CPUA_UNUSED_3	(1UL << (31 - 19))
+
+/* CPU B GPIOS (GPIO0-GPIO7 and IRQ0-IRQ3) */
+#define GPIO_CPUB_RMUX_SEL1B	(1UL << (31 -  0))
+#define GPIO_CPUB_RMUX_SEL0B	(1UL << (31 -  1))
+#define GPIO_CPUB_RMUX_SEL1A	(1UL << (31 -  2))
+#define GPIO_CPUB_RMUX_SEL0A	(1UL << (31 -  3))
+#define GPIO_CPUB_UNUSED_4	(1UL << (31 -  4))
+#define GPIO_CPUB_CPU_READY	(1UL << (31 -  5))
+#define GPIO_CPUB_DEBUG_LED2	(1UL << (31 -  6))
+#define GPIO_CPUB_DEBUG_LED1	(1UL << (31 -  7))
+#define IRQ_CPUB_SD_1A		(1UL << (31 - 16))
+#define IRQ_CPUB_SD_2B		(1UL << (31 - 17))
+#define IRQ_CPUB_SD_2A		(1UL << (31 - 18))
+#define IRQ_CPUB_SD_1B		(1UL << (31 - 19))
+
+/* If it isn't CPU A then it's CPU B */
+static inline unsigned int hww1u1a_is_cpu_a(void)
+{
+	return !mpc85xx_gpio_get(GPIO_CPU_ID);
+}
diff --git a/board/exmeritus/hww1u1a/hww1u1a.c b/board/exmeritus/hww1u1a/hww1u1a.c
new file mode 100644
index 0000000..612d242
--- /dev/null
+++ b/board/exmeritus/hww1u1a/hww1u1a.c
@@ -0,0 +1,549 @@ 
+/*
+ * Copyright 2009-2010 eXMeritus, A Boeing Company
+ * Copyright 2007-2009 Freescale Semiconductor, Inc.
+ *
+ * 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 <pci.h>
+#include <asm/processor.h>
+#include <asm/mmu.h>
+#include <asm/cache.h>
+#include <asm/immap_85xx.h>
+#include <asm/fsl_pci.h>
+#include <asm/fsl_ddr_sdram.h>
+#include <asm/io.h>
+#include <miiphy.h>
+#include <libfdt.h>
+#include <linux/ctype.h>
+#include <fdt_support.h>
+#include <tsec.h>
+#include <asm/fsl_law.h>
+#include <asm/mp.h>
+#include <netdev.h>
+#include <malloc.h>
+#include <i2c.h>
+#include <pca953x.h>
+
+#include "gpios.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+	unsigned int gpio_high = 0;
+	unsigned int gpio_low  = 0;
+	unsigned int gpio_in   = 0;
+	unsigned int i;
+
+	puts("Board: HWW-1U-1A ");
+#ifdef CONFIG_PHYS_64BIT
+	puts("(36-bit addrmap) ");
+#endif
+
+	/*
+	 * First just figure out which CPU we're on, then use that to
+	 * configure the lists of other GPIOs to be programmed.
+	 */
+	mpc85xx_gpio_set_in(GPIO_CPU_ID);
+	if (hww1u1a_is_cpu_a()) {
+		puts("CPU A\n");
+
+		/* We want to turn on some LEDs */
+		gpio_high |= GPIO_CPUA_CPU_READY;
+		gpio_low  |= GPIO_CPUA_DEBUG_LED1;
+		gpio_low  |= GPIO_CPUA_DEBUG_LED2;
+
+		/* Disable the unused transmitters */
+		gpio_low  |= GPIO_CPUA_TDIS1A;
+		gpio_high |= GPIO_CPUA_TDIS1B;
+		gpio_low  |= GPIO_CPUA_TDIS2A;
+		gpio_high |= GPIO_CPUA_TDIS2B;
+	} else {
+		puts("CPU B\n");
+
+		/* We want to turn on some LEDs */
+		gpio_high |= GPIO_CPUB_CPU_READY;
+		gpio_low  |= GPIO_CPUB_DEBUG_LED1;
+		gpio_low  |= GPIO_CPUB_DEBUG_LED2;
+
+		/* Enable the appropriate receivers */
+		gpio_high |= GPIO_CPUB_RMUX_SEL0A;
+		gpio_high |= GPIO_CPUB_RMUX_SEL0B;
+		gpio_low  |= GPIO_CPUB_RMUX_SEL1A;
+		gpio_low  |= GPIO_CPUB_RMUX_SEL1B;
+	}
+
+	/* These GPIOs are common */
+	gpio_in   |= IRQ_I2CINT | IRQ_FANINT | IRQ_DIMM_EVENT;
+	gpio_low  |= GPIO_RS422_RE;
+	gpio_high |= GPIO_RS422_DE;
+
+	/* Ok, now go ahead and program all of those in one go */
+	mpc85xx_gpio_set(	gpio_high|gpio_low|gpio_in,
+				gpio_high|gpio_low,
+				gpio_high);
+
+	/*
+	 * If things have been taken out of reset early (for example, by one
+	 * of the BDI3000 debuggers), then we need to put them back in reset
+	 * and delay a while before we continue.
+	 */
+#define GPIO_RESETS (GPIO_DIMM_RESET|GPIO_USB_RESET|GPIO_GETH0_RESET)
+	if (mpc85xx_gpio_get(GPIO_RESETS)) {
+		ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC85xx_DDR_ADDR;
+
+		puts("Debugger detected... extra device reset enabled!\n");
+
+		/* Put stuff into reset and disable the DDR controller */
+		mpc85xx_gpio_set_low(GPIO_RESETS);
+		out_be32(&ddr->sdram_cfg, 0x00000000);
+
+		puts("    Waiting 1 sec for reset...");
+		for (i = 0; i < 10; i++) {
+			udelay(100000);
+			puts(".");
+		}
+		puts("\n");
+	}
+
+	/* Now bring everything back out of reset again */
+	mpc85xx_gpio_set_high(GPIO_RESETS);
+	return 0;
+}
+
+/*
+ * This little shell function just returns whether or not it's CPU A.
+ * It can be used to select the right device-tree when booting, etc.
+ */
+int do_hww1u1a_test_cpu_a(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	if (argc > 1)
+		cmd_usage(cmdtp);
+
+	if (hww1u1a_is_cpu_a())
+		return 0;
+	else
+		return 1;
+}
+U_BOOT_CMD(
+	hww1u1a_test_cpu_a, 1, 0, do_hww1u1a_test_cpu_a,
+	"Test if this is CPU A (versus B) on the eXMeritus HWW-1U-1A board",
+	/*  */" && <command-if-true>\n"
+	"hww1u1a_test_cpu_a || <command-if-false>\n"
+);
+
+/* Create a prompt-like string: "uboot@HOSTNAME% " */
+#define PROMPT_PREFIX "uboot@exm"
+#define PROMPT_SUFFIX "% "
+
+/* This function returns a PS1 prompt based on the serial number */
+static char *hww1u1a_prompt;
+const char *hww1u1a_get_ps1(void)
+{
+	unsigned long len, i, j;
+	const char *serialnr;
+
+	/* If our prompt was already set, just use that */
+	if (hww1u1a_prompt)
+		return hww1u1a_prompt;
+
+	/* Use our serial number if present, otherwise "UNPROGRAMMED-[AB]" */
+	serialnr = getenv("serial#");
+	if (!serialnr || !serialnr[0]) {
+		if (hww1u1a_is_cpu_a())
+			serialnr = "999999-XA";
+		else
+			serialnr = "999999-XB";
+	}
+
+	/*
+	 * We will turn the serial number into a hostname by:
+	 *   (A) Delete all non-alphanumerics.
+	 *   (B) Lowercase all letters
+	 *   (C) Prefix "exm"
+	 */
+	for (i = 0, len = 0; serialnr[i]; i++)
+		if (isalnum(serialnr[i]))
+			len++;
+
+	len += sizeof(PROMPT_PREFIX PROMPT_SUFFIX); /* Includes NUL */
+	hww1u1a_prompt = malloc(len);
+	if (!hww1u1a_prompt)
+		return PROMPT_PREFIX "UNKNOWN(ENOMEM)" PROMPT_SUFFIX;
+
+	/* Now actually fill it in */
+	i = 0;
+
+	/* Handle the prefix */
+	for (j = 0; j < sizeof(PROMPT_PREFIX) - 1; j++)
+		hww1u1a_prompt[i++] = PROMPT_PREFIX[j];
+
+	/* Now the serial# part of the hostname */
+	for (j = 0; serialnr[j]; j++)
+		if (isalnum(serialnr[j]))
+			hww1u1a_prompt[i++] = tolower(serialnr[j]);
+
+	/* Finally the suffix */
+	for (j = 0; j < sizeof(PROMPT_SUFFIX); j++)
+		hww1u1a_prompt[i++] = PROMPT_SUFFIX[j];
+
+	/* This should all have added up, but just in case */
+	hww1u1a_prompt[len - 1] = '\0';
+
+	/* Now we're done */
+	return hww1u1a_prompt;
+}
+
+void pci_init_board(void)
+{
+	fsl_pcie_init_board(0);
+}
+
+int board_early_init_r(void)
+{
+	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
+	const u8 flash_esel = find_tlb_idx((void *)flashbase, 1);
+
+	/*
+	 * Remap bootflash region to caching-inhibited
+	 * so that flash can be erased properly.
+	 */
+
+	/* Flush d-cache and invalidate i-cache of any FLASH data */
+	flush_dcache();
+	invalidate_icache();
+
+	/* invalidate existing TLB entry for FLASH */
+	disable_tlb(flash_esel);
+
+	set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
+			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+			0, flash_esel, BOOKE_PAGESZ_256M, 1);
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	struct tsec_info_struct tsec_info[4];
+
+	SET_STD_TSEC_INFO(tsec_info[0], 1);
+	SET_STD_TSEC_INFO(tsec_info[1], 2);
+	SET_STD_TSEC_INFO(tsec_info[2], 3);
+
+	if (hww1u1a_is_cpu_a())
+		tsec_info[2].phyaddr = TSEC3_PHY_ADDR_CPUA;
+	else
+		tsec_info[2].phyaddr = TSEC3_PHY_ADDR_CPUB;
+
+	tsec_eth_init(bis, tsec_info, 3);
+	return pci_eth_init(bis);
+}
+
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	phys_addr_t base;
+	phys_size_t size;
+
+	ft_cpu_setup(blob, bd);
+
+	base = getenv_bootm_low();
+	size = getenv_bootm_size();
+
+	fdt_fixup_memory(blob, (u64)base, (u64)size);
+
+	FT_FSL_PCI_SETUP;
+}
+
+void board_lmb_reserve(struct lmb *lmb)
+{
+	cpu_mp_lmb_reserve(lmb);
+}
+
+/*
+ * Unfortunately we have a bit of a problem with our reset line wiring on the
+ * HWW-1U-1A boards.
+ *
+ * Specifically the "CPU A" reset controls all of the PCI devices on the
+ * IO/backplane card, which means ethernet and SATA controllers for both
+ * CPU A *and* CPU B.
+ *
+ * This is somewhat of a problem if the CPUs are reset independently... CPU B
+ * might fail to come up because his PCI devices are confused, or CPU B might
+ * die because CPU A just reset the SATA controller for his root filesystem.
+ *
+ * Since in practice the CPUs never need to reboot independently we will go
+ * ahead and require GPIO cross-communication between them before either one
+ * will reset.
+ *
+ * The communication protocol uses GPIOs 4-7 on the PCA9554 GPIO expander
+ * found on I2C-2 at address 0x3f.  CPU A uses 4,5 as TX and 6,7 as RX; for
+ * CPU B we use the exact opposite.
+ *
+ * The GPIOs initialize as inputs during poweron, and are pulled high; the
+ * PCA9554 expanders will maintain valid outputs over soft-reset allowing for
+ * reliable operation.
+ *
+ * To avoid duplication, we will assign names to the GPIOs:
+ *            ,---------------------------------------.
+ *            |  GPIO4  |  GPIO5  |  GPIO6  |  GPIO7  |
+ *  ,---------|=========|=========|=========|=========|
+ *  |  CPU A  |   tx1   |   tx2   |   rx1   |   rx2   |
+ *  |---------|---------|---------|---------|---------|
+ *  |  CPU B  |   rx1   |   rx2   |   tx1   |   tx2   |
+ *  `-------------------------------------------------'
+ *
+ * The state machine for each CPU is below.  In simplistic terms, each CPU
+ * waits until the other has cleared its GPIOs, then cause a tx1 high=>low
+ * transition.  Upon seeing the other CPU do the same, it will perform a
+ * tx2 high=>low transition and again wait.
+ *
+ * Once both CPUs have performed and seen both transitions, they will each
+ * set tx1 high (to create an "invalid" state) and then reset.
+ *
+ *       ,--------------.
+ *       | START/ERROR: |<==-.
+ *  ,-==>|   tx2 = 1;   |   || (rx2 == 0)
+ *  ||   |   tx1 = 1;   | ==-'
+ *  ||   `--------------'
+ *  ||          ||
+ *  ||          ||  (rx2 == 1)
+ *  ||          \/
+ *  ||   ,--------------.
+ *  ||   | WAITING:     |<==-.
+ *  |\== |   tx1 = 0;   |   || (rx1 == 1) && (rx2 == 1)
+ *  ||   |              | ==-'
+ *  ||   `--------------'
+ *  ||          ||
+ *  ||          ||  (rx1 == 0) && (rx2 == 1)
+ *  ||          \/
+ *  ||   ,--------------.
+ *  ||   | BOTH_READY:  |<==-.
+ *  `-== |   tx2 = 0;   |   || (rx1 == 0) && (rx2 == 1)
+ *       |              | ==-'
+ *       `--------------'
+ *              ||
+ *              ||  (rx2 == 0)
+ *              \/
+ *       ,--------------.
+ *       | RESETTING:   |
+ *       |   tx1 = 1;   |
+ *       |   reset();   |
+ *       `--------------'
+ *
+ * While in the "BOTH_READY" state a high-to-low rx2 transition must be
+ * followed within 50ms by activation of the HRESET_REQ signal.  That
+ * state MUST NOT be interrupted by any event other than the observed
+ * event (rx1 == high) && (rx2 == high).
+ */
+
+/*
+ * These tiny wrappers hardcode the I2C bus and the chip address to make the
+ * state-machine function easier to read and understand.
+ */
+#define PCA9554 CONFIG_SYS_I2C_PCA953X_ADDR
+static int pca9554_set_low(u8 gpio)
+{
+	i2c_set_bus_num(1);
+	return pca953x_set_val(PCA9554, (1U << gpio), 0x00);
+}
+
+static int pca9554_set_high(u8 gpio)
+{
+	i2c_set_bus_num(1);
+	return pca953x_set_val(PCA9554, (1U << gpio), 0xff);
+}
+
+static int pca9554_set_output(u8 gpio)
+{
+	i2c_set_bus_num(1);
+	return pca953x_set_dir(PCA9554, (1U << gpio), 0x00);
+}
+
+static int pca9554_set_input(u8 gpio)
+{
+	i2c_set_bus_num(1);
+	return pca953x_set_dir(PCA9554, (1U << gpio), 0xff);
+}
+
+int board_reset(void)
+{
+	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	u8 tx1, tx2, rx1, rx2, rxmask;
+	int ret;
+
+	/* Our state-machine state */
+	enum {
+		START_ERROR = 0,
+		WAITING,
+		BOTH_READY,
+	} state;
+
+	/* Check what CPU we are and configure accordingly. */
+	if (hww1u1a_is_cpu_a()) {
+		tx1 = 4; tx2 = 5; rx1 = 6; rx2 = 7;
+	} else {
+		rx1 = 4; rx2 = 5; tx1 = 6; tx2 = 7;
+	}
+	rxmask = (1U << rx1) | (1U << rx2);
+
+	printf("RESET: Preparing...");
+
+	/* First clear the "INVERT" setting on all relevant GPIOs */
+	i2c_set_bus_num(1);
+	if (pca953x_set_pol(PCA9554, 0xf0, 0x00) < 0)
+		goto err;
+
+	/* Configure both inputs */
+	if (pca9554_set_input(rx1) < 0)
+		goto err;
+	if (pca9554_set_input(rx2) < 0)
+		goto err;
+
+	/* Make sure the very first thing we do is set the "tx2" GPIO high */
+	if (pca9554_set_high(tx2) < 0)
+		goto err;
+	if (pca9554_set_output(tx2) < 0)
+		goto err;
+
+	/* Now reset our other transmit pin */
+	if (pca9554_set_high(tx1) < 0)
+		goto err;
+	if (pca9554_set_output(tx1) < 0)
+		goto err;
+
+	/* Enter the state machine */
+	state = START_ERROR;
+
+poll_state:
+	i2c_set_bus_num(1);
+	ret = pca953x_get_val(PCA9554);
+	switch (state) {
+	case START_ERROR:
+		if (ctrlc())
+			goto intr;
+
+		if (ret < 0)
+			goto err;
+
+		/* Wait for (rx2 == high) */
+		if (ret & (1U << rx2)) {
+			/* Success! */
+			state = WAITING;
+			goto enter_state;
+		}
+
+		goto poll_state;
+
+	case WAITING:
+		if (ctrlc())
+			goto intr;
+
+		if (ret < 0)
+			goto err;
+
+		/* Wait for (rx1 == low) && (rx2 == high) */
+		ret &= rxmask;
+		if (ret == (1U << rx2)) {
+			/* Success! */
+			state = BOTH_READY;
+			goto enter_state;
+		}
+		if (ret != rxmask) {
+			/* Oops, error */
+			state = START_ERROR;
+			goto enter_state;
+		}
+
+		goto poll_state;
+
+	case BOTH_READY:
+		/*
+		 * Non-interruptable wait for (rx2 == low), however if we
+		 * see (rx1 == high) and (rx2 == high) we should go back
+		 * to START_ERROR.
+		 */
+		if (ret < 0)
+			goto poll_state;
+
+		ret &= rxmask;
+		if (ret == rxmask) {
+			/* Oops, error */
+			state = START_ERROR;
+			goto enter_state;
+		}
+		if (ret & (1U << rx2))
+			goto poll_state;
+
+		/* Success, we have to reset quick now! */
+		(void)pca9554_set_high(tx1);
+
+		/* Turn on the "HRESET_REQ" pin (hard-reset request) */
+		printf("\nRESET: Hardware reset triggered, waiting...\n");
+		out_be32(&gur->rstcr, 0x2);
+		while (1)
+			udelay(10000);
+	}
+
+enter_state:
+	switch (state) {
+	case START_ERROR:
+		printf("\nRESET: Negotiation error!");
+		printf("\nRESET: Starting over...");
+		/* Clear both GPIOs high in the right order */
+		if (pca9554_set_high(tx2) < 0)
+			goto err;
+		if (pca9554_set_high(tx1) < 0)
+			goto err;
+		if (ctrlc())
+			goto intr;
+
+		goto poll_state;
+
+	case WAITING:
+		printf("\nRESET: Waiting for peer...");
+		/* Set tx1 low */
+		if (pca9554_set_low(tx1) < 0)
+			goto err;
+		if (ctrlc())
+			goto intr;
+
+		goto poll_state;
+
+	case BOTH_READY:
+		printf("\nRESET: Both ready, point of no return...");
+		/* Point of no return: set tx2 low */
+		if (pca9554_set_low(tx2) < 0)
+			goto err;
+
+		goto poll_state;
+	}
+
+	/* We only get here through gotos */
+err:
+	printf("\nRESET: I2C communication error!\n");
+intr:
+	printf("\nRESET: Aborted!\n");
+	(void)pca9554_set_high(tx1);
+	(void)pca9554_set_high(tx2);
+	return -1;
+}
diff --git a/board/exmeritus/hww1u1a/law.c b/board/exmeritus/hww1u1a/law.c
new file mode 100644
index 0000000..1281c56
--- /dev/null
+++ b/board/exmeritus/hww1u1a/law.c
@@ -0,0 +1,34 @@ 
+/*
+ * Copyright 2008-2009 Freescale Semiconductor, Inc.
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/fsl_law.h>
+#include <asm/mmu.h>
+
+struct law_entry law_table[] = {
+	SET_LAW(CONFIG_SYS_FLASH_BASE_PHYS, LAW_SIZE_256M, LAW_TRGT_IF_LBC),
+};
+
+int num_law_entries = ARRAY_SIZE(law_table);
diff --git a/board/exmeritus/hww1u1a/tlb.c b/board/exmeritus/hww1u1a/tlb.c
new file mode 100644
index 0000000..6c65206
--- /dev/null
+++ b/board/exmeritus/hww1u1a/tlb.c
@@ -0,0 +1,106 @@ 
+/*
+ * Copyright 2009-2010 eXMeritus, A Boeing Company
+ * Copyright 2008-2009 Freescale Semiconductor, Inc.
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/mmu.h>
+
+struct fsl_e_tlb_entry tlb_table[] = {
+	/* TLB 0 - for temp stack in cache */
+	SET_TLB_ENTRY(0,	CONFIG_SYS_INIT_RAM_ADDR      +  0 * 1024,
+				CONFIG_SYS_INIT_RAM_ADDR_PHYS +  0 * 1024,
+				MAS3_SX|MAS3_SW|MAS3_SR, 0,
+				0, 0, BOOKE_PAGESZ_4K, 0),
+
+	SET_TLB_ENTRY(0,	CONFIG_SYS_INIT_RAM_ADDR      +  4 * 1024,
+				CONFIG_SYS_INIT_RAM_ADDR_PHYS +  4 * 1024,
+				MAS3_SX|MAS3_SW|MAS3_SR, 0,
+				0, 0, BOOKE_PAGESZ_4K, 0),
+
+	SET_TLB_ENTRY(0,	CONFIG_SYS_INIT_RAM_ADDR      +  8 * 1024,
+				CONFIG_SYS_INIT_RAM_ADDR_PHYS +  8 * 1024,
+				MAS3_SX|MAS3_SW|MAS3_SR, 0,
+				0, 0, BOOKE_PAGESZ_4K, 0),
+
+	SET_TLB_ENTRY(0,	CONFIG_SYS_INIT_RAM_ADDR      + 12 * 1024,
+				CONFIG_SYS_INIT_RAM_ADDR_PHYS + 12 * 1024,
+				MAS3_SX|MAS3_SW|MAS3_SR, 0,
+				0, 0, BOOKE_PAGESZ_4K, 0),
+
+	/* TLB 1 */
+	/* *I*** - Boot page */
+	SET_TLB_ENTRY(1,	CONFIG_BPTR_VIRT_ADDR,
+				CONFIG_BPTR_VIRT_ADDR,
+				MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+				0, 0, BOOKE_PAGESZ_4K, 1),
+
+	/* *I*G* - CCSRBAR */
+	SET_TLB_ENTRY(1,	CONFIG_SYS_CCSRBAR,
+				CONFIG_SYS_CCSRBAR_PHYS,
+				MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+				0, 1, BOOKE_PAGESZ_1M, 1),
+
+	/*
+	 * W**G* - FLASH (Will be *I*G* after relocation to RAM)
+	 *
+	 * This maps both SPI FLASH chips (128MByte per chip)
+	 */
+	SET_TLB_ENTRY(1,	CONFIG_SYS_FLASH_BASE,
+				CONFIG_SYS_FLASH_BASE_PHYS,
+				MAS3_SX|MAS3_SR, MAS2_W|MAS2_G,
+				0, 2, BOOKE_PAGESZ_256M, 1),
+
+	/*
+	 * *I*G* - PCI memory
+	 *
+	 * We have 1.5GB total PCI-E memory space to map and we want to use
+	 * the minimum possible number of TLB entries.  Since Book-E TLB
+	 * entries are sized in powers of 4, we use 1GB + 256MB + 256MB.
+	 */
+	SET_TLB_ENTRY(1,	CONFIG_SYS_PCIE3_MEM_VIRT,
+				CONFIG_SYS_PCIE3_MEM_PHYS,
+				MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+				0, 3, BOOKE_PAGESZ_1G, 1),
+	SET_TLB_ENTRY(1,	CONFIG_SYS_PCIE3_MEM_VIRT + 0x40000000,
+				CONFIG_SYS_PCIE3_MEM_PHYS + 0x40000000,
+				MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+				0, 4, BOOKE_PAGESZ_256M, 1),
+	SET_TLB_ENTRY(1,	CONFIG_SYS_PCIE3_MEM_VIRT + 0x50000000,
+				CONFIG_SYS_PCIE3_MEM_PHYS + 0x50000000,
+				MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+				0, 5, BOOKE_PAGESZ_256M, 1),
+
+	/*
+	 * *I*G* - PCI I/O
+	 *
+	 * This one entry covers all 3 64k PCI-E I/O windows
+	 */
+	SET_TLB_ENTRY(1,	CONFIG_SYS_PCIE3_IO_VIRT,
+				CONFIG_SYS_PCIE3_IO_PHYS,
+				MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+				0, 6, BOOKE_PAGESZ_256K, 1),
+};
+
+int num_tlb_entries = ARRAY_SIZE(tlb_table);
diff --git a/boards.cfg b/boards.cfg
index 9b34287..3cacb9c 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -459,6 +459,8 @@  sbc8560                      powerpc     mpc85xx     sbc8560             -
 sbc8560_33                   powerpc     mpc85xx     sbc8560             -              -           sbc8560
 sbc8560_66                   powerpc     mpc85xx     sbc8560             -              -           sbc8560
 socrates                     powerpc     mpc85xx     socrates
+HWW1U1A                      powerpc     mpc85xx     hww1u1a             exmeritus
+HWW1U1A_36BIT                powerpc     mpc85xx     hww1u1a             exmeritus      -           HWW1U1A:36BIT
 MPC8536DS                    powerpc     mpc85xx     mpc8536ds           freescale      -           MPC8536DS
 MPC8536DS_36BIT              powerpc     mpc85xx     mpc8536ds           freescale      -           MPC8536DS:36BIT
 MPC8536DS_NAND               powerpc     mpc85xx     mpc8536ds           freescale      -           MPC8536DS:NAND
diff --git a/include/configs/HWW1U1A.h b/include/configs/HWW1U1A.h
new file mode 100644
index 0000000..6cc44fe
--- /dev/null
+++ b/include/configs/HWW1U1A.h
@@ -0,0 +1,474 @@ 
+/*
+ * Copyright 2009-2010 eXMeritus, A Boeing Company
+ *
+ * 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
+ */
+
+/*
+ * HardwareWall HWW-1U-1A airborne unit configuration file
+ */
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/* High-level system configuration options */
+#define CONFIG_BOOKE		/* Power/PowerPC Book-E			*/
+#define CONFIG_E500		/* e500 (Power ISA v2.03 with SPE)	*/
+#define CONFIG_MPC85xx		/* MPC8540/60/55/41/48 family		*/
+#define CONFIG_FSL_ELBC		/* FreeScale Enhanced LocalBus Cntlr	*/
+#define CONFIG_FSL_LAW		/* FreeScale Local Access Window	*/
+#define CONFIG_P2020		/* FreeScale P2020			*/
+#define CONFIG_HWW1U1A		/* eXMeritus HardwareWall HWW-1U-1A	*/
+#define CONFIG_MP		/* Multiprocessing support		*/
+#define CONFIG_HWCONFIG		/* Use hwconfig from environment	*/
+
+#define CONFIG_L2_CACHE			/* L2 cache enabled		*/
+#define CONFIG_BTB			/* Branch predition enabled	*/
+
+#define CONFIG_PANIC_HANG		/* No board reset on panic	*/
+#define CONFIG_BOARD_EARLY_INIT_R	/* Call board_early_init_r()	*/
+#define CONFIG_CMD_REGINFO		/* Dump various CPU regs	*/
+
+/*
+ * Allow the use of 36-bit physical addresses in "HWW_1U_1A_36BIT" mode.
+ * NOTE: This is only very minimally tested and has known compatibility
+ * issues with the existing kernel images.
+ */
+#define CONFIG_ENABLE_36BIT_PHYS
+#ifdef CONFIG_36BIT
+# define CONFIG_PHYS_64BIT
+# define CONFIG_ADDR_MAP
+# define CONFIG_SYS_NUM_ADDR_MAP 16 /* Number of entries in TLB1 */
+#endif
+
+/* Reserve plenty of RAM for malloc (we have 2GB+) */
+#define CONFIG_SYS_MALLOC_LEN (1024 * 1024)
+
+/* How much L2 cache do we map so we can use it as RAM */
+#define CONFIG_SYS_INIT_RAM_LOCK
+#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000
+
+/* This is our temporary global data area just above the stack */
+#define CONFIG_SYS_GBL_DATA_OFFSET \
+	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+
+/* The stack grows down from the global data area */
+#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+
+/* Enable IRQs and watchdog with a 1000Hz system decrementer */
+#define CONFIG_CMD_IRQ
+#define CONFIG_SYS_HZ 1000
+
+
+/* -------------------------------------------------------------------- */
+
+/*
+ * Clock crystal configuration:
+ *  (1) SYS: 66.666MHz +/- 50ppm (drives CPU/PCI/DDR)
+ *  (2) CCB: Multiplier from SYS_CLK
+ *  (3) RTC: 25.000MHz +/- 50ppm (sampled against CCB clock)
+ */
+#define CONFIG_SYS_CLK_FREQ 66666000/*Hz*/
+#define CONFIG_DDR_CLK_FREQ 66666000/*Hz*/
+
+
+/* -------------------------------------------------------------------- */
+
+/*
+ * Memory map
+ *
+ * 0x0000_0000  0x7fff_ffff    2G  DDR2 ECC SDRAM
+ * 0x8000_0000  0x9fff_ffff  512M  PCI-E Bus 1
+ * 0xa000_0000  0xbfff_ffff  512M  PCI-E Bus 2 (unused)
+ * 0xc000_0000  0xdfff_ffff  512M  PCI-E Bus 3
+ * 0xe000_0000  0xe7ff_ffff  128M  Spansion FLASH
+ * 0xe800_0000  0xefff_ffff  128M  Spansion FLASH
+ * 0xffd0_0000  0xffd0_3fff   16K  L1 boot stack (TLB0)
+ * 0xffe0_0000  0xffef_ffff    1M  CCSR
+ * 0xffe0_5000  0xffe0_5fff    4K    Enhanced LocalBus Controller
+ */
+
+/* Virtual Memory Map */
+#define CONFIG_SYS_DDR_SDRAM_BASE	0x00000000
+#define CONFIG_SYS_SDRAM_BASE		0x00000000
+#define CONFIG_SYS_PCIE3_MEM_VIRT	0x80000000
+#define CONFIG_SYS_PCIE2_MEM_VIRT	0xa0000000
+#define CONFIG_SYS_PCIE1_MEM_VIRT	0xc0000000
+#define CONFIG_SYS_FLASH_BASE		0xe0000000
+#define CONFIG_SYS_CCSRBAR_DEFAULT	0xff700000 /* CCSRBAR @ reset */
+#define CONFIG_SYS_PCIE3_IO_VIRT	0xffc00000
+#define CONFIG_SYS_PCIE2_IO_VIRT	0xffc10000
+#define CONFIG_SYS_PCIE1_IO_VIRT	0xffc20000
+#define CONFIG_SYS_INIT_RAM_ADDR	0xffd00000
+#define CONFIG_SYS_CCSRBAR		0xffe00000 /* CCSRBAR @ runtime */
+
+#define CONFIG_SYS_PCIE3_MEM_SIZE	0x20000000 /* 512M */
+#define CONFIG_SYS_PCIE2_MEM_SIZE	0x20000000 /* 512M */
+#define CONFIG_SYS_PCIE1_MEM_SIZE	0x20000000 /* 512M */
+#define CONFIG_SYS_PCIE3_IO_SIZE	0x00010000 /* 64k */
+#define CONFIG_SYS_PCIE2_IO_SIZE	0x00010000 /* 64k */
+#define CONFIG_SYS_PCIE1_IO_SIZE	0x00010000 /* 64k */
+
+/* Physical Memory Map */
+#ifdef CONFIG_PHYS_64BIT
+#define CONFIG_SYS_PCIE3_MEM_PHYS     0xc00000000ull
+#define CONFIG_SYS_PCIE2_MEM_PHYS     0xc20000000ull
+#define CONFIG_SYS_PCIE1_MEM_PHYS     0xc40000000ull
+#define CONFIG_SYS_FLASH_BASE_PHYS    0xfe0000000ull
+#define CONFIG_SYS_PCIE3_IO_PHYS      0xfffc00000ull
+#define CONFIG_SYS_PCIE2_IO_PHYS      0xfffc10000ull
+#define CONFIG_SYS_PCIE1_IO_PHYS      0xfffc20000ull
+#define CONFIG_SYS_INIT_RAM_ADDR_PHYS 0xfffd00000ull
+#define CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH 0xf		/* for ASM code */
+#define CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW  0xffd00000	/* for ASM code */
+#define CONFIG_SYS_CCSRBAR_PHYS       0xfffe00000ull
+#else
+#define CONFIG_SYS_PCIE3_MEM_PHYS      0x80000000ul
+#define CONFIG_SYS_PCIE2_MEM_PHYS      0xa0000000ul
+#define CONFIG_SYS_PCIE1_MEM_PHYS      0xc0000000ul
+#define CONFIG_SYS_FLASH_BASE_PHYS     0xe0000000ul
+#define CONFIG_SYS_PCIE3_IO_PHYS       0xffc00000ul
+#define CONFIG_SYS_PCIE2_IO_PHYS       0xffc10000ul
+#define CONFIG_SYS_PCIE1_IO_PHYS       0xffc20000ul
+#define CONFIG_SYS_INIT_RAM_ADDR_PHYS  0xffd00000ul
+#define CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH 0x0		/* for ASM code */
+#define CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW  0xffd00000	/* for ASM code */
+#define CONFIG_SYS_CCSRBAR_PHYS        0xffe00000ul
+#endif
+
+/* Legacy code needs this */
+#define CONFIG_SYS_IMMR CONFIG_SYS_CCSRBAR
+
+
+/* -------------------------------------------------------------------- */
+
+/* U-Boot image (MONITOR_BASE == TEXT_BASE) */
+#define CONFIG_RESET_VECTOR_ADDRESS	0xeffffffc /* Top address in flash */
+#define CONFIG_SYS_TEXT_BASE		0xeff80000 /* Start of U-Boot image */
+#define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_MONITOR_LEN		0x80000 /* 512kB (4 flash sectors) */
+
+/*
+ * U-Boot Environment Image:  The two sectors immediately below U-Boot
+ * form the U-Boot environment (regular and redundant).
+ */
+#define CONFIG_ENV_IS_IN_FLASH	/* The environment image is stored in FLASH */
+#define CONFIG_ENV_OVERWRITE	/* Allow "protected" variables to be erased */
+#define CONFIG_ENV_SECT_SIZE	0x20000 /* 128kB (1 flash sector) */
+#define CONFIG_ENV_ADDR        (CONFIG_SYS_MONITOR_BASE - CONFIG_ENV_SECT_SIZE)
+#define CONFIG_ENV_ADDR_REDUND (CONFIG_ENV_ADDR         - CONFIG_ENV_SECT_SIZE)
+
+/* Only use 8kB of each environment sector for data */
+#define CONFIG_ENV_SIZE		0x2000 /* 8kB */
+#define CONFIG_ENV_SIZE_REDUND	0x2000 /* 8kB */
+
+
+/* -------------------------------------------------------------------- */
+
+/* Serial Console Configuration */
+#define CONFIG_CONS_INDEX 1
+#define CONFIG_SYS_NS16550
+#define CONFIG_SYS_NS16550_SERIAL
+#define CONFIG_SYS_NS16550_REG_SIZE 1
+#define CONFIG_SYS_NS16550_CLK get_bus_freq(0)
+
+#define CONFIG_BAUDRATE 115200
+#define CONFIG_SYS_BAUDRATE_TABLE \
+	{300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 115200}
+
+#define CONFIG_SYS_NS16550_COM1	(CONFIG_SYS_CCSRBAR+0x4500)
+#define CONFIG_SYS_NS16550_COM2	(CONFIG_SYS_CCSRBAR+0x4600)
+
+/* Echo back characters received during a serial download */
+#define CONFIG_LOADS_ECHO
+
+/* Allow a serial-download to temporarily change baud */
+#define CONFIG_SYS_LOADS_BAUD_CHANGE
+
+
+/* -------------------------------------------------------------------- */
+
+/* PCI and PCI-Express Support */
+#define CONFIG_PCI		/* Enable PCI/PCIE			*/
+#define CONFIG_PCI_PNP		/* Scan PCI busses			*/
+#define CONFIG_CMD_PCI		/* Enable the "pci" command		*/
+#define CONFIG_FSL_PCI_INIT	/* Common FreeScale PCI initialization	*/
+#define CONFIG_FSL_PCIE_RESET	/* We have PCI-E reset errata		*/
+#define CONFIG_SYS_PCI_64BIT	/* PCI resources are 64-bit		*/
+#define CONFIG_PCI_SCAN_SHOW	/* Display PCI scan during boot		*/
+
+/* Enable 2 of the 3 PCI-E controllers */
+#define CONFIG_PCIE3
+#undef  CONFIG_PCIE2
+#define CONFIG_PCIE1
+
+/* Display human-readable names when initializing */
+#define CONFIG_SYS_PCIE3_NAME "Intel 82571EB"
+#define CONFIG_SYS_PCIE2_NAME "Unused"
+#define CONFIG_SYS_PCIE1_NAME "Silicon Image SIL3531"
+
+/*
+ * PCI bus addresses
+ * Memory space is mapped 1-1, but I/O space must start from 0.
+ */
+#define CONFIG_SYS_PCIE3_IO_BUS  0x00000000
+#define CONFIG_SYS_PCIE2_IO_BUS  0x00000000
+#define CONFIG_SYS_PCIE1_IO_BUS  0x00000000
+#ifdef CONFIG_PHYS_64BIT
+#define CONFIG_SYS_PCIE3_MEM_BUS 0xe0000000
+#define CONFIG_SYS_PCIE2_MEM_BUS 0xe0000000
+#define CONFIG_SYS_PCIE1_MEM_BUS 0xe0000000
+#else
+#define CONFIG_SYS_PCIE3_MEM_BUS 0x80000000
+#define CONFIG_SYS_PCIE2_MEM_BUS 0xa0000000
+#define CONFIG_SYS_PCIE1_MEM_BUS 0xc0000000
+#endif
+
+
+/* -------------------------------------------------------------------- */
+
+/* Generic FreeScale hardware I2C support */
+#define CONFIG_HARD_I2C
+#define CONFIG_FSL_I2C
+#define CONFIG_CMD_I2C
+#define CONFIG_I2C_MULTI_BUS
+#define CONFIG_SYS_I2C_OFFSET  0x3000
+#define CONFIG_SYS_I2C2_OFFSET 0x3100
+
+/* I2C bus configuration */
+#define CONFIG_SYS_I2C_SPEED 400000
+#define CONFIG_SYS_I2C_SLAVE 0x7F
+
+/* DDR2 SO-RDIMM SPD EEPROM is at I2C0-0x51 */
+#define CONFIG_SYS_SPD_BUS_NUM 0
+#define SPD_EEPROM_ADDRESS1 0x51
+
+/* DS1339 RTC is at I2C0-0x68 (I know it says "DS1337", it's a DS1339) */
+#define CONFIG_CMD_DATE
+#define CONFIG_RTC_DS1337
+#define CONFIG_SYS_RTC_BUS_NUM 0
+#define CONFIG_SYS_I2C_RTC_ADDR	0x68
+/* Turn off RTC square-wave output to save battery */
+#define CONFIG_SYS_RTC_DS1337_NOOSC
+
+/* PCA9554 is at I2C1-0x3f (I know it says "PCA953X", it's a PCA9554) */
+#define CONFIG_PCA953X
+#define CONFIG_CMD_PCA953X
+#define CONFIG_CMD_PCA953X_INFO
+#define CONFIG_SYS_I2C_PCA953X_ADDR 0x3f
+
+
+/* -------------------------------------------------------------------- */
+
+/* FreeScale DDR2/3 SDRAM Controller */
+#define CONFIG_FSL_DDR2		/* Our SDRAM slot is DDR2		*/
+#define CONFIG_DDR_ECC		/* Enable ECC by default		*/
+#define CONFIG_DDR_SPD		/* Detect DDR config from SPD EEPROM	*/
+#define CONFIG_SPD_EEPROM	/* ...why 2 config variables for this?	*/
+#define CONFIG_VERY_BIG_RAM	/* Allow 2GB+ of RAM			*/
+#define CONFIG_CMD_SDRAM
+
+/* Standard P2020 DDR controller parameters */
+#define CONFIG_NUM_DDR_CONTROLLERS 1
+#define CONFIG_DIMM_SLOTS_PER_CTLR 1
+#define CONFIG_CHIP_SELECTS_PER_CTRL 2
+
+/* Make sure to tell the DDR controller to preinitialze all of RAM */
+#define CONFIG_MEM_INIT_VALUE 0xDEADBEEF
+#define CONFIG_ECC_INIT_VIA_DDRCONTROLLER
+
+/* Enable the U-Boot "memory test" */
+#define CONFIG_SYS_MEMTEST_START 0x00000000
+#define CONFIG_SYS_MEMTEST_END   0x7fffffff
+
+
+/* -------------------------------------------------------------------- */
+
+/* FLASH Memory Configuration (2x 128MB SPANSION FLASH) */
+#define CONFIG_FLASH_CFI_DRIVER
+#define CONFIG_SYS_FLASH_CFI
+#define CONFIG_SYS_FLASH_EMPTY_INFO
+#define CONFIG_SYS_FLASH_AMD_CHECK_DQ7
+
+/* Flash banks (2x 128MB) */
+#define FLASH0_PHYS (CONFIG_SYS_FLASH_BASE_PHYS + 0x8000000ull)
+#define FLASH1_PHYS (CONFIG_SYS_FLASH_BASE_PHYS + 0x0000000ull)
+#define CONFIG_SYS_MAX_FLASH_BANKS 2
+#define CONFIG_SYS_MAX_FLASH_SECT 1024
+#define CONFIG_SYS_FLASH_BANKS_LIST { FLASH0_PHYS, FLASH1_PHYS }
+
+/*
+ * Flash access modes and timings (values are the defaults after a RESET).
+ *
+ * NOTE: These could probably be optimized but are more than sufficient for
+ * this particular system for the moment.
+ */
+#define FLASH_BRx (BR_PS_16 | BR_MS_GPCM | BR_V)
+#define FLASH_ORx (OR_GPCM_CSNT | OR_GPCM_ACS_DIV2 | OR_GPCM_XACS \
+		| OR_GPCM_SCY_15 | OR_GPCM_TRLX | OR_GPCM_EHTR | OR_GPCM_EAD)
+
+/* Configure both flash banks */
+#define CONFIG_SYS_BR0_PRELIM (FLASH_BRx | BR_PHYS_ADDR(FLASH0_PHYS))
+#define CONFIG_SYS_BR1_PRELIM (FLASH_BRx | BR_PHYS_ADDR(FLASH1_PHYS))
+#define CONFIG_SYS_OR0_PRELIM (FLASH_ORx | OR_AM_128MB)
+#define CONFIG_SYS_OR1_PRELIM (FLASH_ORx | OR_AM_128MB)
+
+/* Flash timeouts (in ms) */
+#define CONFIG_SYS_FLASH_ERASE_TOUT 60000UL /* Erase (60s)	*/
+#define CONFIG_SYS_FLASH_WRITE_TOUT   500UL /* Write (0.5s)	*/
+
+/* Quiet flash testing */
+#define CONFIG_SYS_FLASH_QUIET_TEST
+
+/* Make program/erase count down from 45/5 (9....8....7....) */
+#define CONFIG_FLASH_SHOW_PROGRESS 45
+
+
+/* -------------------------------------------------------------------- */
+
+/* Ethernet Device Support */
+#define CONFIG_NET_MULTI		/* We have multiple devices	*/
+#define CONFIG_MII			/* Enable MII PHY code		*/
+#define CONFIG_MII_DEFAULT_TSEC		/* ??? Copied from P2020DS	*/
+#define CONFIG_PHY_GIGE			/* Support Gigabit PHYs		*/
+#define CONFIG_ETHPRIME "e1000#0"	/* Default to external ports	*/
+
+/* Turn on various helpful networking commands */
+#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_MII
+#define CONFIG_CMD_NET
+#define CONFIG_CMD_PING
+
+/* On-chip FreeScale P2020 "tsec" Ethernet (oneway fibers and peer) */
+#define CONFIG_TSEC_ENET
+#define CONFIG_TSEC1
+#define CONFIG_TSEC2
+#define CONFIG_TSEC3
+#define CONFIG_TSEC1_NAME "owt0"
+#define CONFIG_TSEC2_NAME "owt1"
+#define CONFIG_TSEC3_NAME "peer"
+#define TSEC1_FLAGS (TSEC_GIGABIT | TSEC_REDUCED)
+#define TSEC2_FLAGS (TSEC_GIGABIT | TSEC_REDUCED)
+#define TSEC3_FLAGS (TSEC_GIGABIT | TSEC_REDUCED)
+#define TSEC1_PHYIDX 0
+#define TSEC2_PHYIDX 0
+#define TSEC3_PHYIDX 0
+#define TSEC1_PHY_ADDR      2
+#define TSEC2_PHY_ADDR      3
+#define TSEC3_PHY_ADDR      4
+#define TSEC3_PHY_ADDR_CPUA 4
+#define TSEC3_PHY_ADDR_CPUB 5
+
+/* PCI-E dual-port E1000 (external ethernet ports) */
+#define CONFIG_E1000
+#define CONFIG_E1000_SPI
+#define CONFIG_CMD_E1000
+
+/* We need the SPI infrastructure to poke the E1000's EEPROM */
+#define CONFIG_SPI
+#define CONFIG_SPI_X
+#define CONFIG_CMD_SPI
+#define MAX_SPI_BYTES 32
+
+
+/* -------------------------------------------------------------------- */
+
+/* USB Thumbdrive Device Support */
+#define CONFIG_USB_EHCI
+#define CONFIG_USB_EHCI_FSL
+#define CONFIG_USB_STORAGE
+#define CONFIG_EHCI_HCD_INIT_AFTER_RESET
+#define CONFIG_CMD_USB
+
+/* Partition and Filesystem support */
+#define CONFIG_DOS_PARTITION
+#define CONFIG_CMD_EXT2
+#define CONFIG_CMD_FAT
+
+
+/* -------------------------------------------------------------------- */
+
+/* Command line configuration. */
+#define CONFIG_CMDLINE_EDITING		/* Enable command editing	*/
+#define CONFIG_COMMAND_HISTORY		/* Enable command history	*/
+#define CONFIG_AUTO_COMPLETE		/* Enable command completion	*/
+#define CONFIG_SYS_LONGHELP		/* Enable detailed command help	*/
+#define CONFIG_SYS_MAXARGS 128		/* Up to 128 command-line args	*/
+#define CONFIG_SYS_PBSIZE 8192		/* Allow up to 8k printed lines	*/
+#define CONFIG_SYS_CBSIZE 4096		/* Allow up to 4k command lines	*/
+#define CONFIG_SYS_BARGSIZE 4096	/* Allow up to 4k boot args	*/
+#define CONFIG_SYS_HUSH_PARSER		/* Enable a fancier shell	*/
+#define CONFIG_SYS_PROMPT_HUSH_PS2 "> "	/* Command-line continuation	*/
+
+/* A little extra magic here for the prompt */
+#define CONFIG_SYS_PROMPT hww1u1a_get_ps1()
+#ifndef __ASSEMBLY__
+const char *hww1u1a_get_ps1(void);
+#endif
+
+/* Include a bunch of default commands we probably want */
+#include <config_cmd_default.h>
+
+/* Other helpful shell-like commands */
+#define CONFIG_MD5
+#define CONFIG_SHA1
+#define CONFIG_CMD_MD5SUM
+#define CONFIG_CMD_SHA1
+#define CONFIG_CMD_ASKENV
+#define CONFIG_CMD_SETEXPR
+
+
+/* -------------------------------------------------------------------- */
+
+/* Image manipulation and booting */
+
+/* We use the OpenFirmware-esque "Flattened Device Tree" */
+#define CONFIG_OF_LIBFDT
+#define CONFIG_OF_BOARD_SETUP
+#define CONFIG_OF_STDOUT_VIA_ALIAS
+
+/*
+ * For booting Linux, the board info and command line data
+ * have to be in the first 16 MB of memory, since this is
+ * the maximum mapped by the Linux kernel during initialization.
+ */
+#define CONFIG_CMD_ELF
+#define CONFIG_SYS_BOOTMAPSZ 0x1000000	/* Maximum kernel memory map	*/
+#define CONFIG_SYS_BOOTM_LEN 0x1000000	/* Maximum kernel size of 16MB	*/
+
+/* This is the default address for commands with an optional address arg */
+#define CONFIG_LOADADDR		  100000
+#define CONFIG_SYS_LOAD_ADDR	0x100000
+
+#define CONFIG_BOOTDELAY 20
+#define CONFIG_BOOTCOMMAND "echo Not yet flashed"
+#define CONFIG_BOOTARGS ""
+#define CONFIG_BOOTARGS_DYNAMIC "console=ttyS0,${baudrate}n1"
+
+/* Extra environment parameters */
+#define CONFIG_EXTRA_ENV_SETTINGS					\
+	"preboot=setenv bootargs \"${bootargs} "CONFIG_BOOTARGS_DYNAMIC"\"\0" \
+	"perf_mode=stable\0"						\
+	"memctl_intlv_ctl=2\0"						\
+	"flkernel=0xe8020000\0"						\
+	"flinitramfs=0xe8800000\0"					\
+	"fldevicetree=0xeff20000\0"					\
+	"flbootm=bootm ${flkernel} ${flinitramfs} ${fldevicetree}\0"	\
+	"flboot=run preboot; run flbootm\0"
+
+#endif	/* __CONFIG_H */