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-rw-r--r--board/liebherr/lwmon5/Kconfig16
-rw-r--r--board/liebherr/lwmon5/MAINTAINERS6
-rw-r--r--board/liebherr/lwmon5/Makefile9
-rw-r--r--board/liebherr/lwmon5/config.mk18
-rw-r--r--board/liebherr/lwmon5/init.S75
-rw-r--r--board/liebherr/lwmon5/kbd.c491
-rw-r--r--board/liebherr/lwmon5/lwmon5.c550
-rw-r--r--board/liebherr/lwmon5/sdram.c245
8 files changed, 1410 insertions, 0 deletions
diff --git a/board/liebherr/lwmon5/Kconfig b/board/liebherr/lwmon5/Kconfig
new file mode 100644
index 0000000..7f1bb40
--- /dev/null
+++ b/board/liebherr/lwmon5/Kconfig
@@ -0,0 +1,16 @@
+if TARGET_LWMON5
+
+config SYS_BOARD
+ default "lwmon5"
+
+config SYS_VENDOR
+ default "liebherr"
+
+config SYS_CONFIG_NAME
+ default "lwmon5"
+
+config DISPLAY_BOARDINFO
+ bool
+ default y
+
+endif
diff --git a/board/liebherr/lwmon5/MAINTAINERS b/board/liebherr/lwmon5/MAINTAINERS
new file mode 100644
index 0000000..df45730
--- /dev/null
+++ b/board/liebherr/lwmon5/MAINTAINERS
@@ -0,0 +1,6 @@
+LWMON5 BOARD
+M: Stefan Roese <sr@denx.de>
+S: Maintained
+F: board/liebherr/lwmon5/
+F: include/configs/lwmon5.h
+F: configs/lwmon5_defconfig
diff --git a/board/liebherr/lwmon5/Makefile b/board/liebherr/lwmon5/Makefile
new file mode 100644
index 0000000..02478ca
--- /dev/null
+++ b/board/liebherr/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/liebherr/lwmon5/config.mk b/board/liebherr/lwmon5/config.mk
new file mode 100644
index 0000000..d0348e8
--- /dev/null
+++ b/board/liebherr/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/liebherr/lwmon5/init.S b/board/liebherr/lwmon5/init.S
new file mode 100644
index 0000000..e5207c2
--- /dev/null
+++ b/board/liebherr/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/liebherr/lwmon5/kbd.c b/board/liebherr/lwmon5/kbd.c
new file mode 100644
index 0000000..d6c0a20
--- /dev/null
+++ b/board/liebherr/lwmon5/kbd.c
@@ -0,0 +1,491 @@
+/*
+ * (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 <console.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/liebherr/lwmon5/lwmon5.c b/board/liebherr/lwmon5/lwmon5.c
new file mode 100644
index 0000000..8ad6712
--- /dev/null
+++ b/board/liebherr/lwmon5/lwmon5.c
@@ -0,0 +1,550 @@
+/*
+ * (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;
+ unsigned long usb2d0cr = 0;
+ unsigned long usb2phy0cr, usb2h0cr = 0;
+ unsigned long sdr0_pfc1, sdr0_srst;
+
+ /*
+ * 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]);
+
+ /*
+ * 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);
+
+ /*
+ * Clear resets
+ */
+ mtsdr(SDR0_SRST1, 0x00000000);
+ mtsdr(SDR0_SRST0, 0x00000000);
+
+ printf("USB: Host(int phy) Device(ext phy)\n");
+
+ /*
+ * 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);
+
+ /*
+ * Init matrix keyboard
+ */
+ misc_init_r_kbd();
+
+ 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/liebherr/lwmon5/sdram.c b/board/liebherr/lwmon5/sdram.c
new file mode 100644
index 0000000..bcb3449
--- /dev/null
+++ b/board/liebherr/lwmon5/sdram.c
@@ -0,0 +1,245 @@
+/*
+ * (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)
+{
+ /* 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());
+
+ return (CONFIG_SYS_MBYTES_SDRAM << 20);
+}
generated by cgit v1.1 at 2024-11-25 03:51:40 +0000