Revert "powerpc: ppc4xx: remove lwmon5 support"

This reverts commit 8fe11b8901a31d11990488c82bc23612589d57be.

I'll add support to lwmon5 in the next patch and will remove
support for the broken lcd4_lwmon5 as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>

8 files changed, 1413 insertions, 0 deletions

diff --git a/board/lwmon5/Kconfig b/board/lwmon5/Kconfig
new file mode 100644
index 0000000..90566d8
--- /dev/null
+++ b/board/lwmon5/Kconfig
@@ -0,0 +1,9 @@
+if TARGET_LWMON5
+
+config SYS_BOARD
+	default "lwmon5"
+
+config SYS_CONFIG_NAME
+	default "lwmon5"
+
+endif
diff --git a/board/lwmon5/MAINTAINERS b/board/lwmon5/MAINTAINERS
new file mode 100644
index 0000000..7402ab6
--- /dev/null
+++ b/board/lwmon5/MAINTAINERS
@@ -0,0 +1,7 @@
+LWMON5 BOARD
+M:	Stefan Roese <sr@denx.de>
+S:	Maintained
+F:	board/lwmon5/
+F:	include/configs/lwmon5.h
+F:	configs/lcd4_lwmon5_defconfig
+F:	configs/lwmon5_defconfig
diff --git a/board/lwmon5/Makefile b/board/lwmon5/Makefile
new file mode 100644
index 0000000..02478ca
--- /dev/null
+++ b/board/lwmon5/Makefile
@@ -0,0 +1,9 @@
+#
+# (C) Copyright 2002-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	= lwmon5.o kbd.o sdram.o
+extra-y	+= init.o
diff --git a/board/lwmon5/config.mk b/board/lwmon5/config.mk
new file mode 100644
index 0000000..d0348e8
--- /dev/null
+++ b/board/lwmon5/config.mk
@@ -0,0 +1,18 @@
+#
+# (C) Copyright 2002
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+# lwmon5 (440EPx)
+#
+
+PLATFORM_CPPFLAGS += -DCONFIG_440=1
+
+ifeq ($(debug),1)
+PLATFORM_CPPFLAGS += -DDEBUG
+endif
+
+ifeq ($(dbcr),1)
+PLATFORM_CPPFLAGS += -DCONFIG_SYS_INIT_DBCR=0x8cff0000
+endif
diff --git a/board/lwmon5/init.S b/board/lwmon5/init.S
new file mode 100644
index 0000000..e5207c2
--- /dev/null
+++ b/board/lwmon5/init.S
@@ -0,0 +1,75 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ *  Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm-offsets.h>
+#include <ppc_asm.tmpl>
+#include <config.h>
+#include <asm/mmu.h>
+
+/**************************************************************************
+ * 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
+
+	/*
+	 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
+	 * speed up boot process. It is patched after relocation to enable SA_I
+	 */
+	tlbentry(CONFIG_SYS_BOOT_BASE_ADDR, SZ_256M, CONFIG_SYS_BOOT_BASE_ADDR, 1, AC_RWX | SA_G)
+
+	/*
+	 * TLB entries for SDRAM are not needed on this platform.
+	 * They are dynamically generated in the SPD DDR(2) detection
+	 * routine.
+	 */
+
+#ifdef CONFIG_SYS_INIT_RAM_DCACHE
+	/* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
+	tlbentry(CONFIG_SYS_INIT_RAM_ADDR, SZ_4K, CONFIG_SYS_INIT_RAM_ADDR, 0, AC_RWX | SA_G)
+#endif
+
+	/* TLB-entry for PCI Memory */
+	tlbentry(CONFIG_SYS_PCI_MEMBASE, SZ_256M, CONFIG_SYS_PCI_MEMBASE, 1, AC_RW | SA_IG)
+	tlbentry(CONFIG_SYS_PCI_MEMBASE1, SZ_256M, CONFIG_SYS_PCI_MEMBASE1, 1, AC_RW | SA_IG)
+	tlbentry(CONFIG_SYS_PCI_MEMBASE2, SZ_256M, CONFIG_SYS_PCI_MEMBASE2, 1, AC_RW | SA_IG)
+	tlbentry(CONFIG_SYS_PCI_MEMBASE3, SZ_256M, CONFIG_SYS_PCI_MEMBASE3, 1, AC_RW | SA_IG)
+
+	/* TLB-entry for the FPGA Chip select 2 */
+	tlbentry(CONFIG_SYS_FPGA_BASE_0, SZ_1M, CONFIG_SYS_FPGA_BASE_0, 1, AC_RWX | SA_I|SA_G)
+
+	/* TLB-entry for the FPGA Chip select 3 */
+	tlbentry(CONFIG_SYS_FPGA_BASE_1, SZ_1M, CONFIG_SYS_FPGA_BASE_1, 1,AC_RWX | SA_I|SA_G)
+
+	/* TLB-entry for the LIME Controller */
+	tlbentry(CONFIG_SYS_LIME_BASE_0, SZ_16M, CONFIG_SYS_LIME_BASE_0, 1, AC_RWX | SA_I|SA_G)
+	tlbentry(CONFIG_SYS_LIME_BASE_1, SZ_16M, CONFIG_SYS_LIME_BASE_1, 1, AC_RWX | SA_I|SA_G)
+	tlbentry(CONFIG_SYS_LIME_BASE_2, SZ_16M, CONFIG_SYS_LIME_BASE_2, 1, AC_RWX | SA_I|SA_G)
+	tlbentry(CONFIG_SYS_LIME_BASE_3, SZ_16M, CONFIG_SYS_LIME_BASE_3, 1, AC_RWX | SA_I|SA_G)
+
+	/* TLB-entry for Internal Registers & OCM */
+	tlbentry(0xe0000000, SZ_16M, 0xe0000000, 0,  AC_RWX | SA_I)
+
+	/*TLB-entry PCI registers*/
+	tlbentry(0xEEC00000, SZ_1K, 0xEEC00000, 1,  AC_RWX | SA_IG)
+
+	/* TLB-entry for peripherals */
+	tlbentry(0xEF000000, SZ_16M, 0xEF000000, 1, AC_RWX | SA_IG)
+
+	tlbtab_end
diff --git a/board/lwmon5/kbd.c b/board/lwmon5/kbd.c
new file mode 100644
index 0000000..97962da
--- /dev/null
+++ b/board/lwmon5/kbd.c
@@ -0,0 +1,490 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * (C) Copyright 2001, 2002
+ * DENX Software Engineering
+ * Wolfgang Denk, wd@denx.de
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/* define DEBUG for debugging output (obviously ;-)) */
+#if 0
+#define DEBUG
+#endif
+
+#include <common.h>
+#include <i2c.h>
+#include <command.h>
+#include <post.h>
+#include <serial.h>
+#include <malloc.h>
+
+#include <linux/types.h>
+#include <linux/string.h>	/* for strdup */
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void kbd_init (void);
+static int compare_magic (uchar *kbd_data, uchar *str);
+
+/*--------------------- Local macros and constants --------------------*/
+#define	_NOT_USED_	0xFFFFFFFF
+
+/*------------------------- dspic io expander -----------------------*/
+#define DSPIC_PON_STATUS_REG	0x80A
+#define DSPIC_PON_INV_STATUS_REG 0x80C
+#define DSPIC_PON_KEY_REG	0x810
+/*------------------------- Keyboard controller -----------------------*/
+/* command codes */
+#define	KEYBD_CMD_READ_KEYS	0x01
+#define KEYBD_CMD_READ_VERSION	0x02
+#define KEYBD_CMD_READ_STATUS	0x03
+#define KEYBD_CMD_RESET_ERRORS	0x10
+
+/* status codes */
+#define KEYBD_STATUS_MASK	0x3F
+#define	KEYBD_STATUS_H_RESET	0x20
+#define KEYBD_STATUS_BROWNOUT	0x10
+#define KEYBD_STATUS_WD_RESET	0x08
+#define KEYBD_STATUS_OVERLOAD	0x04
+#define KEYBD_STATUS_ILLEGAL_WR	0x02
+#define KEYBD_STATUS_ILLEGAL_RD	0x01
+
+/* Number of bytes returned from Keyboard Controller */
+#define KEYBD_VERSIONLEN	2	/* version information */
+
+/*
+ * This is different from the "old" lwmon dsPIC kbd controller
+ * implementation. Now the controller still answers with 9 bytes,
+ * but the last 3 bytes are always "0x06 0x07 0x08". So we just
+ * set the length to compare to 6 instead of 9.
+ */
+#define	KEYBD_DATALEN		6	/* normal key scan data */
+
+/* maximum number of "magic" key codes that can be assigned */
+
+static uchar kbd_addr = CONFIG_SYS_I2C_KEYBD_ADDR;
+static uchar dspic_addr = CONFIG_SYS_I2C_DSPIC_IO_ADDR;
+
+static uchar *key_match (uchar *);
+
+#define	KEYBD_SET_DEBUGMODE	'#'	/* Magic key to enable debug output */
+
+/***********************************************************************
+F* Function:     int board_postclk_init (void) P*A*Z*
+ *
+P* Parameters:   none
+P*
+P* Returnvalue:  int
+P*                - 0 is always returned.
+ *
+Z* Intention:    This function is the board_postclk_init() method implementation
+Z*               for the lwmon board.
+ *
+ ***********************************************************************/
+int board_postclk_init (void)
+{
+	kbd_init();
+
+	return (0);
+}
+
+static void kbd_init (void)
+{
+	uchar kbd_data[KEYBD_DATALEN];
+	uchar tmp_data[KEYBD_DATALEN];
+	uchar val, errcd;
+	int i;
+
+	i2c_set_bus_num(0);
+
+	gd->arch.kbd_status = 0;
+
+	/* Forced by PIC. Delays <= 175us loose */
+	udelay(1000);
+
+	/* Read initial keyboard error code */
+	val = KEYBD_CMD_READ_STATUS;
+	i2c_write (kbd_addr, 0, 0, &val, 1);
+	i2c_read (kbd_addr, 0, 0, &errcd, 1);
+	/* clear unused bits */
+	errcd &= KEYBD_STATUS_MASK;
+	/* clear "irrelevant" bits. Recommended by Martin Rajek, LWN */
+	errcd &= ~(KEYBD_STATUS_H_RESET|KEYBD_STATUS_BROWNOUT);
+	if (errcd) {
+		gd->arch.kbd_status |= errcd << 8;
+	}
+	/* Reset error code and verify */
+	val = KEYBD_CMD_RESET_ERRORS;
+	i2c_write (kbd_addr, 0, 0, &val, 1);
+	udelay(1000);	/* delay NEEDED by keyboard PIC !!! */
+
+	val = KEYBD_CMD_READ_STATUS;
+	i2c_write (kbd_addr, 0, 0, &val, 1);
+	i2c_read (kbd_addr, 0, 0, &val, 1);
+
+	val &= KEYBD_STATUS_MASK;	/* clear unused bits */
+	if (val) {			/* permanent error, report it */
+		gd->arch.kbd_status |= val;
+		return;
+	}
+
+	/*
+	 * Read current keyboard state.
+	 *
+	 * After the error reset it may take some time before the
+	 * keyboard PIC picks up a valid keyboard scan - the total
+	 * scan time is approx. 1.6 ms (information by Martin Rajek,
+	 * 28 Sep 2002). We read a couple of times for the keyboard
+	 * to stabilize, using a big enough delay.
+	 * 10 times should be enough. If the data is still changing,
+	 * we use what we get :-(
+	 */
+
+	memset (tmp_data, 0xFF, KEYBD_DATALEN);	/* impossible value */
+	for (i=0; i<10; ++i) {
+		val = KEYBD_CMD_READ_KEYS;
+		i2c_write (kbd_addr, 0, 0, &val, 1);
+		i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
+
+		if (memcmp(kbd_data, tmp_data, KEYBD_DATALEN) == 0) {
+			/* consistent state, done */
+			break;
+		}
+		/* remeber last state, delay, and retry */
+		memcpy (tmp_data, kbd_data, KEYBD_DATALEN);
+		udelay (5000);
+	}
+}
+
+
+/* Read a register from the dsPIC. */
+int _dspic_read(ushort reg, ushort *data)
+{
+	uchar buf[sizeof(*data)];
+	int rval;
+
+	if (i2c_read(dspic_addr, reg, 2, buf, 2))
+		return -1;
+
+	rval = i2c_read(dspic_addr, reg, sizeof(reg), buf, sizeof(*data));
+	*data = (buf[0] << 8) | buf[1];
+
+	return rval;
+}
+
+
+/***********************************************************************
+F* Function:     int misc_init_r (void) P*A*Z*
+ *
+P* Parameters:   none
+P*
+P* Returnvalue:  int
+P*                - 0 is always returned, even in the case of a keyboard
+P*                    error.
+ *
+Z* Intention:    This function is the misc_init_r() method implementation
+Z*               for the lwmon board.
+Z*               The keyboard controller is initialized and the result
+Z*               of a read copied to the environment variable "keybd".
+Z*               If KEYBD_SET_DEBUGMODE is defined, a check is made for
+Z*               this key, and if found display to the LCD will be enabled.
+Z*               The keys in "keybd" are checked against the magic
+Z*               keycommands defined in the environment.
+Z*               See also key_match().
+ *
+D* Design:       wd@denx.de
+C* Coding:       wd@denx.de
+V* Verification: dzu@denx.de
+ ***********************************************************************/
+int misc_init_r_kbd (void)
+{
+	uchar kbd_data[KEYBD_DATALEN];
+	char keybd_env[2 * KEYBD_DATALEN + 1];
+	uchar kbd_init_status = gd->arch.kbd_status >> 8;
+	uchar kbd_status = gd->arch.kbd_status;
+	uchar val;
+	ushort data, inv_data;
+	char *str;
+	int i;
+
+	if (kbd_init_status) {
+		printf ("KEYBD: Error %02X\n", kbd_init_status);
+	}
+	if (kbd_status) {		/* permanent error, report it */
+		printf ("*** Keyboard error code %02X ***\n", kbd_status);
+		sprintf (keybd_env, "%02X", kbd_status);
+		setenv ("keybd", keybd_env);
+		return 0;
+	}
+
+	/*
+	 * Now we know that we have a working  keyboard,  so  disable
+	 * all output to the LCD except when a key press is detected.
+	 */
+
+	if ((console_assign (stdout, "serial") < 0) ||
+		(console_assign (stderr, "serial") < 0)) {
+		printf ("Can't assign serial port as output device\n");
+	}
+
+	/* Read Version */
+	val = KEYBD_CMD_READ_VERSION;
+	i2c_write (kbd_addr, 0, 0, &val, 1);
+	i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_VERSIONLEN);
+	printf ("KEYBD: Version %d.%d\n", kbd_data[0], kbd_data[1]);
+
+	/* Read current keyboard state */
+	val = KEYBD_CMD_READ_KEYS;
+	i2c_write (kbd_addr, 0, 0, &val, 1);
+	i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
+
+	/* read out start key from bse01 received via can */
+	_dspic_read(DSPIC_PON_STATUS_REG, &data);
+	/* check highbyte from status register */
+	if (data > 0xFF) {
+		_dspic_read(DSPIC_PON_INV_STATUS_REG, &inv_data);
+
+		/* check inverse data */
+		if ((data+inv_data) == 0xFFFF) {
+			/* don't overwrite local key */
+			if (kbd_data[1] == 0) {
+				/* read key value */
+				_dspic_read(DSPIC_PON_KEY_REG, &data);
+				str = (char *)&data;
+				/* swap bytes */
+				kbd_data[1] = str[1];
+				kbd_data[2] = str[0];
+				printf("CAN received startkey: 0x%X\n", data);
+			}
+		}
+	}
+
+	for (i = 0; i < KEYBD_DATALEN; ++i) {
+		sprintf (keybd_env + i + i, "%02X", kbd_data[i]);
+	}
+
+	setenv ("keybd", keybd_env);
+
+	str = strdup ((char *)key_match (kbd_data));	/* decode keys */
+#ifdef KEYBD_SET_DEBUGMODE
+	if (kbd_data[0] == KEYBD_SET_DEBUGMODE) {	/* set debug mode */
+		if ((console_assign (stdout, "lcd") < 0) ||
+			(console_assign (stderr, "lcd") < 0)) {
+			printf ("Can't assign LCD display as output device\n");
+		}
+	}
+#endif /* KEYBD_SET_DEBUGMODE */
+#ifdef CONFIG_PREBOOT	/* automatically configure "preboot" command on key match */
+	setenv ("preboot", str);	/* set or delete definition */
+#endif /* CONFIG_PREBOOT */
+	if (str != NULL) {
+		free (str);
+	}
+	return (0);
+}
+
+#ifdef CONFIG_PREBOOT
+
+static uchar kbd_magic_prefix[] = "key_magic";
+static uchar kbd_command_prefix[] = "key_cmd";
+
+static int compare_magic (uchar *kbd_data, uchar *str)
+{
+	uchar compare[KEYBD_DATALEN-1];
+	char *nxt;
+	int i;
+
+	/* Don't include modifier byte */
+	memcpy (compare, kbd_data+1, KEYBD_DATALEN-1);
+
+	for (; str != NULL; str = (*nxt) ? (uchar *)(nxt+1) : (uchar *)nxt) {
+		uchar c;
+		int k;
+
+		c = (uchar) simple_strtoul ((char *)str, (char **) (&nxt), 16);
+
+		if (str == (uchar *)nxt) {	/* invalid character */
+			break;
+		}
+
+		/*
+		 * Check if this key matches the input.
+		 * Set matches to zero, so they match only once
+		 * and we can find duplicates or extra keys
+		 */
+		for (k = 0; k < sizeof(compare); ++k) {
+			if (compare[k] == '\0')	/* only non-zero entries */
+				continue;
+			if (c == compare[k]) {	/* found matching key */
+				compare[k] = '\0';
+				break;
+			}
+		}
+		if (k == sizeof(compare)) {
+			return -1;		/* unmatched key */
+		}
+	}
+
+	/*
+	 * A full match leaves no keys in the `compare' array,
+	 */
+	for (i = 0; i < sizeof(compare); ++i) {
+		if (compare[i])
+		{
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+/***********************************************************************
+F* Function:     static uchar *key_match (uchar *kbd_data) P*A*Z*
+ *
+P* Parameters:   uchar *kbd_data
+P*                - The keys to match against our magic definitions
+P*
+P* Returnvalue:  uchar *
+P*                - != NULL: Pointer to the corresponding command(s)
+P*                     NULL: No magic is about to happen
+ *
+Z* Intention:    Check if pressed key(s) match magic sequence,
+Z*               and return the command string associated with that key(s).
+Z*
+Z*               If no key press was decoded, NULL is returned.
+Z*
+Z*               Note: the first character of the argument will be
+Z*                     overwritten with the "magic charcter code" of the
+Z*                     decoded key(s), or '\0'.
+Z*
+Z*               Note: the string points to static environment data
+Z*                     and must be saved before you call any function that
+Z*                     modifies the environment.
+ *
+D* Design:       wd@denx.de
+C* Coding:       wd@denx.de
+V* Verification: dzu@denx.de
+ ***********************************************************************/
+static uchar *key_match (uchar *kbd_data)
+{
+	char magic[sizeof (kbd_magic_prefix) + 1];
+	uchar *suffix;
+	char *kbd_magic_keys;
+
+	/*
+	 * The following string defines the characters that can pe appended
+	 * to "key_magic" to form the names of environment variables that
+	 * hold "magic" key codes, i. e. such key codes that can cause
+	 * pre-boot actions. If the string is empty (""), then only
+	 * "key_magic" is checked (old behaviour); the string "125" causes
+	 * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
+	 */
+	if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
+		kbd_magic_keys = "";
+
+	/* loop over all magic keys;
+	 * use '\0' suffix in case of empty string
+	 */
+	for (suffix=(uchar *)kbd_magic_keys; *suffix || suffix==(uchar *)kbd_magic_keys; ++suffix) {
+		sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
+		debug ("### Check magic \"%s\"\n", magic);
+		if (compare_magic(kbd_data, (uchar *)getenv(magic)) == 0) {
+			char cmd_name[sizeof (kbd_command_prefix) + 1];
+			char *cmd;
+
+			sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
+
+			cmd = getenv (cmd_name);
+			debug ("### Set PREBOOT to $(%s): \"%s\"\n",
+					cmd_name, cmd ? cmd : "<<NULL>>");
+			*kbd_data = *suffix;
+			return ((uchar *)cmd);
+		}
+	}
+	debug ("### Delete PREBOOT\n");
+	*kbd_data = '\0';
+	return (NULL);
+}
+#endif /* CONFIG_PREBOOT */
+
+/***********************************************************************
+F* Function:     int do_kbd (cmd_tbl_t *cmdtp, int flag,
+F*                           int argc, char * const argv[]) P*A*Z*
+ *
+P* Parameters:   cmd_tbl_t *cmdtp
+P*                - Pointer to our command table entry
+P*               int flag
+P*                - If the CMD_FLAG_REPEAT bit is set, then this call is
+P*                  a repetition
+P*               int argc
+P*                - Argument count
+P*               char * const argv[]
+P*                - Array of the actual arguments
+P*
+P* Returnvalue:  int
+P*                - 0 is always returned.
+ *
+Z* Intention:    Implement the "kbd" command.
+Z*               The keyboard status is read.  The result is printed on
+Z*               the console and written into the "keybd" environment
+Z*               variable.
+ *
+D* Design:       wd@denx.de
+C* Coding:       wd@denx.de
+V* Verification: dzu@denx.de
+ ***********************************************************************/
+int do_kbd (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	uchar kbd_data[KEYBD_DATALEN];
+	char keybd_env[2 * KEYBD_DATALEN + 1];
+	uchar val;
+	int i;
+
+#if 0 /* Done in kbd_init */
+	i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+#endif
+
+	/* Read keys */
+	val = KEYBD_CMD_READ_KEYS;
+	i2c_write (kbd_addr, 0, 0, &val, 1);
+	i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
+
+	puts ("Keys:");
+	for (i = 0; i < KEYBD_DATALEN; ++i) {
+		sprintf (keybd_env + i + i, "%02X", kbd_data[i]);
+		printf (" %02x", kbd_data[i]);
+	}
+	putc ('\n');
+	setenv ("keybd", keybd_env);
+	return 0;
+}
+
+U_BOOT_CMD(
+	kbd,	1,	1,	do_kbd,
+	"read keyboard status",
+	""
+);
+
+/*----------------------------- Utilities -----------------------------*/
+
+#ifdef CONFIG_POST
+/*
+ * Returns 1 if keys pressed to start the power-on long-running tests
+ * Called from board_init_f().
+ */
+int post_hotkeys_pressed(void)
+{
+	uchar kbd_data[KEYBD_DATALEN];
+	uchar val;
+
+	/* Read keys */
+	val = KEYBD_CMD_READ_KEYS;
+	i2c_write (kbd_addr, 0, 0, &val, 1);
+	i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
+
+	return (compare_magic(kbd_data, (uchar *)CONFIG_POST_KEY_MAGIC) == 0);
+}
+#endif
diff --git a/board/lwmon5/lwmon5.c b/board/lwmon5/lwmon5.c
new file mode 100644
index 0000000..e9aa0b7
--- /dev/null
+++ b/board/lwmon5/lwmon5.c
@@ -0,0 +1,558 @@
+/*
+ * (C) Copyright 2007-2013
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/ppc440.h>
+#include <asm/processor.h>
+#include <asm/ppc4xx-gpio.h>
+#include <asm/io.h>
+#include <post.h>
+#include <flash.h>
+#include <mtd/cfi_flash.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static phys_addr_t lwmon5_cfi_flash_bank_addr[2] = CONFIG_SYS_FLASH_BANKS_LIST;
+
+ulong flash_get_size(ulong base, int banknum);
+int misc_init_r_kbd(void);
+
+int board_early_init_f(void)
+{
+	u32 sdr0_pfc1, sdr0_pfc2;
+	u32 reg;
+
+	/* PLB Write pipelining disabled. Denali Core workaround */
+	mtdcr(PLB4A0_ACR, 0xDE000000);
+	mtdcr(PLB4A1_ACR, 0xDE000000);
+
+	/*--------------------------------------------------------------------
+	 * Setup the interrupt controller polarities, triggers, etc.
+	 *-------------------------------------------------------------------*/
+	mtdcr(UIC0SR, 0xffffffff);  /* clear all. if write with 1 then the status is cleared  */
+	mtdcr(UIC0ER, 0x00000000);  /* disable all */
+	mtdcr(UIC0CR, 0x00000000);  /* we have not critical interrupts at the moment */
+	mtdcr(UIC0PR, 0xFFBFF1EF);  /* Adjustment of the polarity */
+	mtdcr(UIC0TR, 0x00000900);  /* per ref-board manual */
+	mtdcr(UIC0VR, 0x00000000);  /* int31 highest, base=0x000 is within DDRAM */
+	mtdcr(UIC0SR, 0xffffffff);  /* clear all */
+
+	mtdcr(UIC1SR, 0xffffffff);  /* clear all */
+	mtdcr(UIC1ER, 0x00000000);  /* disable all */
+	mtdcr(UIC1CR, 0x00000000);  /* all non-critical */
+	mtdcr(UIC1PR, 0xFFFFC6A5);  /* Adjustment of the polarity */
+	mtdcr(UIC1TR, 0x60000040);  /* per ref-board manual */
+	mtdcr(UIC1VR, 0x00000000);  /* int31 highest, base=0x000 is within DDRAM */
+	mtdcr(UIC1SR, 0xffffffff);  /* clear all */
+
+	mtdcr(UIC2SR, 0xffffffff);  /* clear all */
+	mtdcr(UIC2ER, 0x00000000);  /* disable all */
+	mtdcr(UIC2CR, 0x00000000);  /* all non-critical */
+	mtdcr(UIC2PR, 0x27C00000);  /* Adjustment of the polarity */
+	mtdcr(UIC2TR, 0x3C000000);  /* per ref-board manual */
+	mtdcr(UIC2VR, 0x00000000);  /* int31 highest, base=0x000 is within DDRAM */
+	mtdcr(UIC2SR, 0xffffffff);  /* clear all */
+
+	/* Trace Pins are disabled. SDR0_PFC0 Register */
+	mtsdr(SDR0_PFC0, 0x0);
+
+	/* select Ethernet pins */
+	mfsdr(SDR0_PFC1, sdr0_pfc1);
+	/* SMII via ZMII */
+	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_SELECT_MASK) |
+		SDR0_PFC1_SELECT_CONFIG_6;
+	mfsdr(SDR0_PFC2, sdr0_pfc2);
+	sdr0_pfc2 = (sdr0_pfc2 & ~SDR0_PFC2_SELECT_MASK) |
+		SDR0_PFC2_SELECT_CONFIG_6;
+
+	/* enable SPI (SCP) */
+	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_SIS_MASK) | SDR0_PFC1_SIS_SCP_SEL;
+
+	mtsdr(SDR0_PFC2, sdr0_pfc2);
+	mtsdr(SDR0_PFC1, sdr0_pfc1);
+
+	mtsdr(SDR0_PFC4, 0x80000000);
+
+	/* PCI arbiter disabled */
+	/* PCI Host Configuration disbaled */
+	mfsdr(SDR0_PCI0, reg);
+	reg = 0;
+	mtsdr(SDR0_PCI0, 0x00000000 | reg);
+
+	gpio_write_bit(CONFIG_SYS_GPIO_FLASH_WP, 1);
+
+#if CONFIG_POST & CONFIG_SYS_POST_BSPEC1
+	/* enable the LSB transmitter */
+	gpio_write_bit(CONFIG_SYS_GPIO_LSB_ENABLE, 1);
+	/* enable the CAN transmitter */
+	gpio_write_bit(CONFIG_SYS_GPIO_CAN_ENABLE, 1);
+
+	reg = 0; /* reuse as counter */
+	out_be32((void *)CONFIG_SYS_DSPIC_TEST_ADDR,
+		in_be32((void *)CONFIG_SYS_DSPIC_TEST_ADDR)
+			& ~CONFIG_SYS_DSPIC_TEST_MASK);
+	while (gpio_read_in_bit(CONFIG_SYS_GPIO_DSPIC_READY) && reg++ < 1000) {
+		udelay(1000);
+	}
+	if (gpio_read_in_bit(CONFIG_SYS_GPIO_DSPIC_READY)) {
+		/* set "boot error" flag */
+		out_be32((void *)CONFIG_SYS_DSPIC_TEST_ADDR,
+			in_be32((void *)CONFIG_SYS_DSPIC_TEST_ADDR) |
+			CONFIG_SYS_DSPIC_TEST_MASK);
+	}
+#endif
+
+	/*
+	 * Reset PHY's:
+	 * The PHY's need a 2nd reset pulse, since the MDIO address is latched
+	 * upon reset, and with the first reset upon powerup, the addresses are
+	 * not latched reliable, since the IRQ line is multiplexed with an
+	 * MDIO address. A 2nd reset at this time will make sure, that the
+	 * correct address is latched.
+	 */
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY0_RST, 1);
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY1_RST, 1);
+	udelay(1000);
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY0_RST, 0);
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY1_RST, 0);
+	udelay(1000);
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY0_RST, 1);
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY1_RST, 1);
+
+	return 0;
+}
+
+/*
+ * Override weak default with board specific version
+ */
+phys_addr_t cfi_flash_bank_addr(int bank)
+{
+	return lwmon5_cfi_flash_bank_addr[bank];
+}
+
+/*
+ * Override the weak default mapping function with a board specific one
+ */
+u32 flash_get_bank_size(int cs, int idx)
+{
+	return flash_info[idx].size;
+}
+
+int board_early_init_r(void)
+{
+	u32 val0, val1;
+
+	/*
+	 * lwmon5 is manufactured in 2 different board versions:
+	 * The lwmon5a board has 64MiB NOR flash instead of the
+	 * 128MiB of the original lwmon5. Unfortunately the CFI driver
+	 * will report 2 banks of 64MiB even for the smaller flash
+	 * chip, since the bank is mirrored. To fix this, we bring
+	 * one bank into CFI query mode and read its response. This
+	 * enables us to detect the real number of flash devices/
+	 * banks which will be used later on by the common CFI driver.
+	 */
+
+	/* Put bank 0 into CFI command mode and read */
+	out_be32((void *)CONFIG_SYS_FLASH0, 0x00980098);
+	val0 = in_be32((void *)CONFIG_SYS_FLASH0 + FLASH_OFFSET_CFI_RESP);
+	val1 = in_be32((void *)CONFIG_SYS_FLASH1 + FLASH_OFFSET_CFI_RESP);
+
+	/* Reset flash again out of query mode */
+	out_be32((void *)CONFIG_SYS_FLASH0, 0x00f000f0);
+
+	/* When not identical, we have 2 different flash devices/banks */
+	if (val0 != val1)
+		return 0;
+
+	/*
+	 * Now we're sure that we're running on a LWMON5a board with
+	 * only 64MiB NOR flash in one bank:
+	 *
+	 * Set flash base address and bank count for CFI driver probing.
+	 */
+	cfi_flash_num_flash_banks = 1;
+	lwmon5_cfi_flash_bank_addr[0] = CONFIG_SYS_FLASH0;
+
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	u32 pbcr;
+	int size_val = 0;
+	u32 reg;
+#ifndef CONFIG_LCD4_LWMON5
+	unsigned long usb2d0cr = 0;
+	unsigned long usb2phy0cr, usb2h0cr = 0;
+	unsigned long sdr0_pfc1, sdr0_srst;
+#endif
+
+	/*
+	 * FLASH stuff...
+	 */
+
+	/* Re-do sizing to get full correct info */
+
+	/* adjust flash start and offset */
+	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
+	gd->bd->bi_flashoffset = 0;
+
+	mfebc(PB0CR, pbcr);
+	size_val = ffs(gd->bd->bi_flashsize) - 21;
+	pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17);
+	mtebc(PB0CR, pbcr);
+
+	/*
+	 * Re-check to get correct base address
+	 */
+	flash_get_size(gd->bd->bi_flashstart, 0);
+
+	/* Monitor protection ON by default */
+	flash_protect(FLAG_PROTECT_SET, -CONFIG_SYS_MONITOR_LEN, 0xffffffff,
+		      &flash_info[cfi_flash_num_flash_banks - 1]);
+
+	/* Env protection ON by default */
+	flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
+		      CONFIG_ENV_ADDR_REDUND + 2 * CONFIG_ENV_SECT_SIZE - 1,
+		      &flash_info[cfi_flash_num_flash_banks - 1]);
+
+#ifndef CONFIG_LCD4_LWMON5
+	/*
+	 * USB suff...
+	 */
+
+	/* Reset USB */
+	/* Reset of USB2PHY0 must be active at least 10 us  */
+	mtsdr(SDR0_SRST0, SDR0_SRST0_USB2H | SDR0_SRST0_USB2D);
+	udelay(2000);
+
+	mtsdr(SDR0_SRST1, SDR0_SRST1_USB20PHY | SDR0_SRST1_USB2HUTMI |
+	      SDR0_SRST1_USB2HPHY | SDR0_SRST1_OPBA2 |
+	      SDR0_SRST1_PLB42OPB1 | SDR0_SRST1_OPB2PLB40);
+	udelay(2000);
+
+	/* Errata CHIP_6 */
+
+	/* 1. Set internal PHY configuration */
+	/* SDR Setting */
+	mfsdr(SDR0_PFC1, sdr0_pfc1);
+	mfsdr(SDR0_USB0, usb2d0cr);
+	mfsdr(SDR0_USB2PHY0CR, usb2phy0cr);
+	mfsdr(SDR0_USB2H0CR, usb2h0cr);
+
+	usb2phy0cr = usb2phy0cr & ~SDR0_USB2PHY0CR_XOCLK_MASK;
+	usb2phy0cr = usb2phy0cr |  SDR0_USB2PHY0CR_XOCLK_EXTERNAL;	/*0*/
+	usb2phy0cr = usb2phy0cr & ~SDR0_USB2PHY0CR_WDINT_MASK;
+	usb2phy0cr = usb2phy0cr |  SDR0_USB2PHY0CR_WDINT_16BIT_30MHZ;	/*1*/
+	usb2phy0cr = usb2phy0cr & ~SDR0_USB2PHY0CR_DVBUS_MASK;
+	usb2phy0cr = usb2phy0cr |  SDR0_USB2PHY0CR_DVBUS_PUREN;		/*1*/
+	usb2phy0cr = usb2phy0cr & ~SDR0_USB2PHY0CR_DWNSTR_MASK;
+	usb2phy0cr = usb2phy0cr |  SDR0_USB2PHY0CR_DWNSTR_HOST;		/*1*/
+	usb2phy0cr = usb2phy0cr & ~SDR0_USB2PHY0CR_UTMICN_MASK;
+	usb2phy0cr = usb2phy0cr |  SDR0_USB2PHY0CR_UTMICN_HOST;		/*1*/
+
+	/*
+	 * An 8-bit/60MHz interface is the only possible alternative
+	 * when connecting the Device to the PHY
+	 */
+	usb2h0cr   = usb2h0cr & ~SDR0_USB2H0CR_WDINT_MASK;
+	usb2h0cr   = usb2h0cr |  SDR0_USB2H0CR_WDINT_16BIT_30MHZ;	/*1*/
+
+	mtsdr(SDR0_PFC1, sdr0_pfc1);
+	mtsdr(SDR0_USB0, usb2d0cr);
+	mtsdr(SDR0_USB2PHY0CR, usb2phy0cr);
+	mtsdr(SDR0_USB2H0CR, usb2h0cr);
+
+	/* 2. De-assert internal PHY reset */
+	mfsdr(SDR0_SRST1, sdr0_srst);
+	sdr0_srst = sdr0_srst & ~SDR0_SRST1_USB20PHY;
+	mtsdr(SDR0_SRST1, sdr0_srst);
+
+	/* 3. Wait for more than 1 ms */
+	udelay(2000);
+
+	/* 4. De-assert USB 2.0 Host main reset */
+	mfsdr(SDR0_SRST0, sdr0_srst);
+	sdr0_srst = sdr0_srst &~ SDR0_SRST0_USB2H;
+	mtsdr(SDR0_SRST0, sdr0_srst);
+	udelay(1000);
+
+	/* 5. De-assert reset of OPB2 cores */
+	mfsdr(SDR0_SRST1, sdr0_srst);
+	sdr0_srst = sdr0_srst &~ SDR0_SRST1_PLB42OPB1;
+	sdr0_srst = sdr0_srst &~ SDR0_SRST1_OPB2PLB40;
+	sdr0_srst = sdr0_srst &~ SDR0_SRST1_OPBA2;
+	mtsdr(SDR0_SRST1, sdr0_srst);
+	udelay(1000);
+
+	/* 6. Set EHCI Configure FLAG */
+
+	/* 7. Reassert internal PHY reset: */
+	mtsdr(SDR0_SRST1, SDR0_SRST1_USB20PHY);
+	udelay(1000);
+#endif
+
+	/*
+	 * Clear resets
+	 */
+	mtsdr(SDR0_SRST1, 0x00000000);
+	mtsdr(SDR0_SRST0, 0x00000000);
+
+#ifndef CONFIG_LCD4_LWMON5
+	printf("USB:   Host(int phy) Device(ext phy)\n");
+#endif
+
+	/*
+	 * Clear PLB4A0_ACR[WRP]
+	 * This fix will make the MAL burst disabling patch for the Linux
+	 * EMAC driver obsolete.
+	 */
+	reg = mfdcr(PLB4A0_ACR) & ~PLB4Ax_ACR_WRP_MASK;
+	mtdcr(PLB4A0_ACR, reg);
+
+#ifndef CONFIG_LCD4_LWMON5
+	/*
+	 * Init matrix keyboard
+	 */
+	misc_init_r_kbd();
+#endif
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	char buf[64];
+	int i = getenv_f("serial#", buf, sizeof(buf));
+
+	printf("Board: %s", __stringify(CONFIG_HOSTNAME));
+
+	if (i > 0) {
+		puts(", serial# ");
+		puts(buf);
+	}
+	putc('\n');
+
+	return (0);
+}
+
+void hw_watchdog_reset(void)
+{
+	int val;
+#if defined(CONFIG_WD_MAX_RATE)
+	unsigned long long ct = get_ticks();
+
+	/*
+	 * Don't allow watch-dog triggering more frequently than
+	 * the predefined value CONFIG_WD_MAX_RATE [ticks].
+	 */
+	if (ct >= gd->arch.wdt_last) {
+		if ((ct - gd->arch.wdt_last) < CONFIG_WD_MAX_RATE)
+			return;
+	} else {
+		/* Time base counter had been reset */
+		if (((unsigned long long)(-1) - gd->arch.wdt_last + ct) <
+		    CONFIG_WD_MAX_RATE)
+			return;
+	}
+	gd->arch.wdt_last = get_ticks();
+#endif
+
+	/*
+	 * Toggle watchdog output
+	 */
+	val = gpio_read_out_bit(CONFIG_SYS_GPIO_WATCHDOG) == 0 ? 1 : 0;
+	gpio_write_bit(CONFIG_SYS_GPIO_WATCHDOG, val);
+}
+
+int do_eeprom_wp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	if (argc < 2)
+		return cmd_usage(cmdtp);
+
+	if ((strcmp(argv[1], "on") == 0))
+		gpio_write_bit(CONFIG_SYS_GPIO_EEPROM_EXT_WP, 1);
+	else if ((strcmp(argv[1], "off") == 0))
+		gpio_write_bit(CONFIG_SYS_GPIO_EEPROM_EXT_WP, 0);
+	else
+		return cmd_usage(cmdtp);
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	eepromwp,	2,	0,	do_eeprom_wp,
+	"eeprom write protect off/on",
+	"<on|off> - enable (on) or disable (off) I2C EEPROM write protect"
+);
+
+#if defined(CONFIG_VIDEO)
+#include <video_fb.h>
+#include <mb862xx.h>
+
+extern GraphicDevice mb862xx;
+
+static const gdc_regs init_regs [] = {
+	{ 0x0100, 0x00000f00 },
+	{ 0x0020, 0x801401df },
+	{ 0x0024, 0x00000000 },
+	{ 0x0028, 0x00000000 },
+	{ 0x002c, 0x00000000 },
+	{ 0x0110, 0x00000000 },
+	{ 0x0114, 0x00000000 },
+	{ 0x0118, 0x01df0280 },
+	{ 0x0004, 0x031f0000 },
+	{ 0x0008, 0x027f027f },
+	{ 0x000c, 0x015f028f },
+	{ 0x0010, 0x020c0000 },
+	{ 0x0014, 0x01df01ea },
+	{ 0x0018, 0x00000000 },
+	{ 0x001c, 0x01e00280 },
+	{ 0x0100, 0x80010f00 },
+	{ 0x0, 0x0 }
+};
+
+const gdc_regs *board_get_regs(void)
+{
+	return init_regs;
+}
+
+/* Returns Lime base address */
+unsigned int board_video_init(void)
+{
+	/*
+	 * Reset Lime controller
+	 */
+	gpio_write_bit(CONFIG_SYS_GPIO_LIME_S, 1);
+	udelay(500);
+	gpio_write_bit(CONFIG_SYS_GPIO_LIME_RST, 1);
+
+	mb862xx.winSizeX = 640;
+	mb862xx.winSizeY = 480;
+	mb862xx.gdfBytesPP = 2;
+	mb862xx.gdfIndex = GDF_15BIT_555RGB;
+
+	return CONFIG_SYS_LIME_BASE_0;
+}
+
+#define DEFAULT_BRIGHTNESS	0x64
+
+static void board_backlight_brightness(int brightness)
+{
+	if (brightness > 0) {
+		/* pwm duty, lamp on */
+		out_be32((void *)(CONFIG_SYS_FPGA_BASE_0 + 0x00000024), brightness);
+		out_be32((void *)(CONFIG_SYS_FPGA_BASE_0 + 0x00000020), 0x701);
+	} else {
+		/* lamp off */
+		out_be32((void *)(CONFIG_SYS_FPGA_BASE_0 + 0x00000024), 0x00);
+		out_be32((void *)(CONFIG_SYS_FPGA_BASE_0 + 0x00000020), 0x00);
+	}
+}
+
+void board_backlight_switch(int flag)
+{
+	char * param;
+	int rc;
+
+	if (flag) {
+		param = getenv("brightness");
+		rc = param ? simple_strtol(param, NULL, 10) : -1;
+		if (rc < 0)
+			rc = DEFAULT_BRIGHTNESS;
+	} else {
+		rc = 0;
+	}
+	board_backlight_brightness(rc);
+}
+
+#if defined(CONFIG_CONSOLE_EXTRA_INFO)
+/*
+ * Return text to be printed besides the logo.
+ */
+void video_get_info_str(int line_number, char *info)
+{
+	if (line_number == 1)
+		strcpy(info, " Board: Lwmon5 (Liebherr Elektronik GmbH)");
+	else
+		info [0] = '\0';
+}
+#endif /* CONFIG_CONSOLE_EXTRA_INFO */
+#endif /* CONFIG_VIDEO */
+
+void board_reset(void)
+{
+	gpio_write_bit(CONFIG_SYS_GPIO_BOARD_RESET, 1);
+}
+
+#ifdef CONFIG_SPL_OS_BOOT
+/*
+ * lwmon5 specific implementation of spl_start_uboot()
+ *
+ * RETURN
+ * 0 if booting into OS is selected (default)
+ * 1 if booting into U-Boot is selected
+ */
+int spl_start_uboot(void)
+{
+	char s[8];
+
+	env_init();
+	getenv_f("boot_os", s, sizeof(s));
+	if ((s != NULL) && (strcmp(s, "yes") == 0))
+		return 0;
+
+	return 1;
+}
+
+/*
+ * This function is called from the SPL U-Boot version for
+ * early init stuff, that needs to be done for OS (e.g. Linux)
+ * booting. Doing it later in the real U-Boot would not work
+ * in case that the SPL U-Boot boots Linux directly.
+ */
+void spl_board_init(void)
+{
+	const gdc_regs *regs = board_get_regs();
+
+	/*
+	 * Setup PFC registers, mainly for ethernet support
+	 * later on in Linux
+	 */
+	board_early_init_f();
+
+	/* enable the LSB transmitter */
+	gpio_write_bit(CONFIG_SYS_GPIO_LSB_ENABLE, 1);
+
+	/*
+	 * Clear resets
+	 */
+	mtsdr(SDR0_SRST1, 0x00000000);
+	mtsdr(SDR0_SRST0, 0x00000000);
+
+	/*
+	 * Reset Lime controller
+	 */
+	gpio_write_bit(CONFIG_SYS_GPIO_LIME_S, 1);
+	udelay(500);
+	gpio_write_bit(CONFIG_SYS_GPIO_LIME_RST, 1);
+
+	out_be32((void *)CONFIG_SYS_LIME_SDRAM_CLOCK, CONFIG_SYS_MB862xx_CCF);
+	udelay(300);
+	out_be32((void *)CONFIG_SYS_LIME_MMR, CONFIG_SYS_MB862xx_MMR);
+
+	while (regs->index) {
+		out_be32((void *)(CONFIG_SYS_LIME_BASE_0 + GC_DISP_BASE) +
+			 regs->index, regs->value);
+		regs++;
+	}
+
+	board_backlight_brightness(DEFAULT_BRIGHTNESS);
+}
+#endif
diff --git a/board/lwmon5/sdram.c b/board/lwmon5/sdram.c
new file mode 100644
index 0000000..5dfbb0b
--- /dev/null
+++ b/board/lwmon5/sdram.c
@@ -0,0 +1,247 @@
+/*
+ * (C) Copyright 2006
+ * Sylvie Gohl,		    AMCC/IBM, gohl.sylvie@fr.ibm.com
+ * Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
+ * Thierry Roman,	    AMCC/IBM, thierry_roman@fr.ibm.com
+ * Alain Saurel,	    AMCC/IBM, alain.saurel@fr.ibm.com
+ * Robert Snyder,	    AMCC/IBM, rob.snyder@fr.ibm.com
+ *
+ * (C) Copyright 2007-2013
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/* define DEBUG for debugging output (obviously ;-)) */
+#if 0
+#define DEBUG
+#endif
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/mmu.h>
+#include <asm/io.h>
+#include <asm/cache.h>
+#include <asm/ppc440.h>
+#include <watchdog.h>
+
+/*
+ * This DDR2 setup code can dynamically setup the TLB entries for the DDR2 memory
+ * region. Right now the cache should still be disabled in U-Boot because of the
+ * EMAC driver, that need it's buffer descriptor to be located in non cached
+ * memory.
+ *
+ * If at some time this restriction doesn't apply anymore, just define
+ * CONFIG_4xx_DCACHE in the board config file and this code should setup
+ * everything correctly.
+ */
+#ifdef CONFIG_4xx_DCACHE
+#define MY_TLB_WORD2_I_ENABLE	0			/* enable caching on SDRAM */
+#else
+#define MY_TLB_WORD2_I_ENABLE	TLB_WORD2_I_ENABLE	/* disable caching on SDRAM */
+#endif
+
+/*-----------------------------------------------------------------------------+
+ * Prototypes
+ *-----------------------------------------------------------------------------*/
+extern int denali_wait_for_dlllock(void);
+extern void denali_core_search_data_eye(void);
+extern void dcbz_area(u32 start_address, u32 num_bytes);
+
+static u32 is_ecc_enabled(void)
+{
+	u32 val;
+
+	mfsdram(DDR0_22, val);
+	val &= DDR0_22_CTRL_RAW_MASK;
+	if (val)
+		return 1;
+	else
+		return 0;
+}
+
+void board_add_ram_info(int use_default)
+{
+	PPC4xx_SYS_INFO board_cfg;
+	u32 val;
+
+	if (is_ecc_enabled())
+		puts(" (ECC");
+	else
+		puts(" (ECC not");
+
+	get_sys_info(&board_cfg);
+	printf(" enabled, %ld MHz", (board_cfg.freqPLB * 2) / 1000000);
+
+	mfsdram(DDR0_03, val);
+	val = DDR0_03_CASLAT_DECODE(val);
+	printf(", CL%d)", val);
+}
+
+#ifdef CONFIG_DDR_ECC
+static void wait_ddr_idle(void)
+{
+	/*
+	 * Controller idle status cannot be determined for Denali
+	 * DDR2 code. Just return here.
+	 */
+}
+
+static void program_ecc(u32 start_address,
+			u32 num_bytes,
+			u32 tlb_word2_i_value)
+{
+	u32 val;
+	u32 current_addr = start_address;
+	u32 size;
+	int bytes_remaining;
+
+	sync();
+	wait_ddr_idle();
+
+	/*
+	 * Because of 440EPx errata CHIP 11, we don't touch the last 256
+	 * bytes of SDRAM.
+	 */
+	bytes_remaining = num_bytes - CONFIG_SYS_MEM_TOP_HIDE;
+
+	/*
+	 * We have to write the ECC bytes by zeroing and flushing in smaller
+	 * steps, since the whole 256MByte takes too long for the external
+	 * watchdog.
+	 */
+	while (bytes_remaining > 0) {
+		size = min((64 << 20), bytes_remaining);
+
+		/* Write zero's to SDRAM */
+		dcbz_area(current_addr, size);
+
+		/* Write modified dcache lines back to memory */
+		clean_dcache_range(current_addr, current_addr + size);
+
+		current_addr += 64 << 20;
+		bytes_remaining -= 64 << 20;
+		WATCHDOG_RESET();
+	}
+
+	sync();
+	wait_ddr_idle();
+
+	/* Clear error status */
+	mfsdram(DDR0_00, val);
+	mtsdram(DDR0_00, val | DDR0_00_INT_ACK_ALL);
+
+	/* Set 'int_mask' parameter to functionnal value */
+	mfsdram(DDR0_01, val);
+	mtsdram(DDR0_01, ((val &~ DDR0_01_INT_MASK_MASK) | DDR0_01_INT_MASK_ALL_OFF));
+
+	sync();
+	wait_ddr_idle();
+}
+#endif
+
+/*************************************************************************
+ *
+ * initdram -- 440EPx's DDR controller is a DENALI Core
+ *
+ ************************************************************************/
+phys_size_t initdram (int board_type)
+{
+#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_LCD4_LWMON5)
+	/* CL=4 */
+	mtsdram(DDR0_02, 0x00000000);
+
+	mtsdram(DDR0_00, 0x0000190A);
+	mtsdram(DDR0_01, 0x01000000);
+	mtsdram(DDR0_03, 0x02040803); /* A suitable burst length was taken. CAS is right for our board */
+
+	mtsdram(DDR0_04, 0x0B030300);
+	mtsdram(DDR0_05, 0x02020308);
+	mtsdram(DDR0_06, 0x0003C812);
+	mtsdram(DDR0_07, 0x00090100);
+	mtsdram(DDR0_08, 0x03c80001);
+	mtsdram(DDR0_09, 0x00011D5F);
+	mtsdram(DDR0_10, 0x00000100);
+	mtsdram(DDR0_11, 0x000CC800);
+	mtsdram(DDR0_12, 0x00000003);
+	mtsdram(DDR0_14, 0x00000000);
+	mtsdram(DDR0_17, 0x1e000000);
+	mtsdram(DDR0_18, 0x1e1e1e1e);
+	mtsdram(DDR0_19, 0x1e1e1e1e);
+	mtsdram(DDR0_20, 0x0B0B0B0B);
+	mtsdram(DDR0_21, 0x0B0B0B0B);
+#ifdef CONFIG_DDR_ECC
+	mtsdram(DDR0_22, 0x00267F0B | DDR0_22_CTRL_RAW_ECC_ENABLE); /* enable ECC       */
+#else
+	mtsdram(DDR0_22, 0x00267F0B);
+#endif
+
+	mtsdram(DDR0_23, 0x01000000);
+	mtsdram(DDR0_24, 0x01010001);
+
+	mtsdram(DDR0_26, 0x2D93028A);
+	mtsdram(DDR0_27, 0x0784682B);
+
+	mtsdram(DDR0_28, 0x00000080);
+	mtsdram(DDR0_31, 0x00000000);
+	mtsdram(DDR0_42, 0x01000008);
+
+	mtsdram(DDR0_43, 0x050A0200);
+	mtsdram(DDR0_44, 0x00000005);
+	mtsdram(DDR0_02, 0x00000001); /* Activate the denali core */
+
+	denali_wait_for_dlllock();
+
+#if defined(CONFIG_DDR_DATA_EYE)
+	/* -----------------------------------------------------------+
+	 * Perform data eye search if requested.
+	 * ----------------------------------------------------------*/
+	program_tlb(0, CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20,
+		    TLB_WORD2_I_ENABLE);
+	denali_core_search_data_eye();
+	remove_tlb(CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20);
+#endif
+
+	/*
+	 * Program tlb entries for this size (dynamic)
+	 */
+	program_tlb(0, CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20,
+		    MY_TLB_WORD2_I_ENABLE);
+
+#if defined(CONFIG_DDR_ECC)
+#if defined(CONFIG_4xx_DCACHE)
+	/*
+	 * If ECC is enabled, initialize the parity bits.
+	 */
+	program_ecc(0, CONFIG_SYS_MBYTES_SDRAM << 20, 0);
+#else /* CONFIG_4xx_DCACHE */
+	/*
+	 * Setup 2nd TLB with same physical address but different virtual address
+	 * with cache enabled. This is done for fast ECC generation.
+	 */
+	program_tlb(0, CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20, 0);
+
+	/*
+	 * If ECC is enabled, initialize the parity bits.
+	 */
+	program_ecc(CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20, 0);
+
+	/*
+	 * Now after initialization (auto-calibration and ECC generation)
+	 * remove the TLB entries with caches enabled and program again with
+	 * desired cache functionality
+	 */
+	remove_tlb(CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20);
+#endif /* CONFIG_4xx_DCACHE */
+#endif /* CONFIG_DDR_ECC */
+
+	/*
+	 * Clear possible errors resulting from data-eye-search.
+	 * If not done, then we could get an interrupt later on when
+	 * exceptions are enabled.
+	 */
+	set_mcsr(get_mcsr());
+#endif /* CONFIG_SPL_BUILD */
+
+	return (CONFIG_SYS_MBYTES_SDRAM << 20);
+}