MIPS: IncaIP: Move all IncaIP specific code to separate subdirectory

IncaIP is a SoC and its specific code should reside in an own
SoC subdirectory. Also add -mtune=4kc flag for CPU optimization.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
Cc: Wolfgang Denk <wd@denx.de>
Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com>

6 files changed, 719 insertions, 0 deletions

diff --git a/arch/mips/cpu/mips32/incaip/Makefile b/arch/mips/cpu/mips32/incaip/Makefile
new file mode 100644
index 0000000..9c2b1aa
--- /dev/null
+++ b/arch/mips/cpu/mips32/incaip/Makefile
@@ -0,0 +1,46 @@
+#
+# (C) Copyright 2011
+# 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	= $(obj)lib$(SOC).o
+
+SOBJS	= incaip_wdt.o
+COBJS	= incaip_clock.o asc_serial.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+
+all:	$(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/mips/cpu/mips32/incaip/asc_serial.c b/arch/mips/cpu/mips32/incaip/asc_serial.c
new file mode 100644
index 0000000..7239804
--- /dev/null
+++ b/arch/mips/cpu/mips32/incaip/asc_serial.c
@@ -0,0 +1,285 @@
+/*
+ * (INCA) ASC UART support
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/inca-ip.h>
+#include "asc_serial.h"
+
+
+#define SET_BIT(reg, mask)                  reg |= (mask)
+#define CLEAR_BIT(reg, mask)                reg &= (~mask)
+#define CLEAR_BITS(reg, mask)               CLEAR_BIT(reg, mask)
+#define SET_BITS(reg, mask)                 SET_BIT(reg, mask)
+#define SET_BITFIELD(reg, mask, off, val)   {reg &= (~mask); reg |= (val << off);}
+
+extern uint incaip_get_fpiclk(void);
+
+static int serial_setopt (void);
+
+/* pointer to ASC register base address */
+static volatile incaAsc_t *pAsc = (incaAsc_t *)INCA_IP_ASC;
+
+/******************************************************************************
+*
+* serial_init - initialize a INCAASC channel
+*
+* This routine initializes the number of data bits, parity
+* and set the selected baud rate. Interrupts are disabled.
+* Set the modem control signals if the option is selected.
+*
+* RETURNS: N/A
+*/
+
+int serial_init (void)
+{
+    /* we have to set PMU.EN13 bit to enable an ASC device*/
+    INCAASC_PMU_ENABLE(13);
+
+    /* and we have to set CLC register*/
+    CLEAR_BIT(pAsc->asc_clc, ASCCLC_DISS);
+    SET_BITFIELD(pAsc->asc_clc, ASCCLC_RMCMASK, ASCCLC_RMCOFFSET, 0x0001);
+
+    /* initialy we are in async mode */
+    pAsc->asc_con = ASCCON_M_8ASYNC;
+
+    /* select input port */
+    pAsc->asc_pisel = (CONSOLE_TTY & 0x1);
+
+    /* TXFIFO's filling level */
+    SET_BITFIELD(pAsc->asc_txfcon, ASCTXFCON_TXFITLMASK,
+		    ASCTXFCON_TXFITLOFF, INCAASC_TXFIFO_FL);
+    /* enable TXFIFO */
+    SET_BIT(pAsc->asc_txfcon, ASCTXFCON_TXFEN);
+
+    /* RXFIFO's filling level */
+    SET_BITFIELD(pAsc->asc_txfcon, ASCRXFCON_RXFITLMASK,
+		    ASCRXFCON_RXFITLOFF, INCAASC_RXFIFO_FL);
+    /* enable RXFIFO */
+    SET_BIT(pAsc->asc_rxfcon, ASCRXFCON_RXFEN);
+
+    /* enable error signals */
+    SET_BIT(pAsc->asc_con, ASCCON_FEN);
+    SET_BIT(pAsc->asc_con, ASCCON_OEN);
+
+    /* acknowledge ASC interrupts */
+    ASC_INTERRUPTS_CLEAR(INCAASC_IRQ_LINE_ALL);
+
+    /* disable ASC interrupts */
+    ASC_INTERRUPTS_DISABLE(INCAASC_IRQ_LINE_ALL);
+
+    /* set FIFOs into the transparent mode */
+    SET_BIT(pAsc->asc_txfcon, ASCTXFCON_TXTMEN);
+    SET_BIT(pAsc->asc_rxfcon, ASCRXFCON_RXTMEN);
+
+    /* set baud rate */
+    serial_setbrg();
+
+    /* set the options */
+    serial_setopt();
+
+    return 0;
+}
+
+void serial_setbrg (void)
+{
+    ulong      uiReloadValue, fdv;
+    ulong      f_ASC;
+
+    f_ASC = incaip_get_fpiclk();
+
+#ifndef INCAASC_USE_FDV
+    fdv = 2;
+    uiReloadValue = (f_ASC / (fdv * 16 * CONFIG_BAUDRATE)) - 1;
+#else
+    fdv = INCAASC_FDV_HIGH_BAUDRATE;
+    uiReloadValue = (f_ASC / (8192 * CONFIG_BAUDRATE / fdv)) - 1;
+#endif /* INCAASC_USE_FDV */
+
+    if ( (uiReloadValue < 0) || (uiReloadValue > 8191) )
+    {
+#ifndef INCAASC_USE_FDV
+	fdv = 3;
+	uiReloadValue = (f_ASC / (fdv * 16 * CONFIG_BAUDRATE)) - 1;
+#else
+	fdv = INCAASC_FDV_LOW_BAUDRATE;
+	uiReloadValue = (f_ASC / (8192 * CONFIG_BAUDRATE / fdv)) - 1;
+#endif /* INCAASC_USE_FDV */
+
+	if ( (uiReloadValue < 0) || (uiReloadValue > 8191) )
+	{
+	    return;    /* can't impossibly generate that baud rate */
+	}
+    }
+
+    /* Disable Baud Rate Generator; BG should only be written when R=0 */
+    CLEAR_BIT(pAsc->asc_con, ASCCON_R);
+
+#ifndef INCAASC_USE_FDV
+    /*
+     * Disable Fractional Divider (FDE)
+     * Divide clock by reload-value + constant (BRS)
+     */
+    /* FDE = 0 */
+    CLEAR_BIT(pAsc->asc_con, ASCCON_FDE);
+
+    if ( fdv == 2 )
+	CLEAR_BIT(pAsc->asc_con, ASCCON_BRS);   /* BRS = 0 */
+    else
+	SET_BIT(pAsc->asc_con, ASCCON_BRS); /* BRS = 1 */
+
+#else /* INCAASC_USE_FDV */
+
+    /* Enable Fractional Divider */
+    SET_BIT(pAsc->asc_con, ASCCON_FDE); /* FDE = 1 */
+
+    /* Set fractional divider value */
+    pAsc->asc_fdv = fdv & ASCFDV_VALUE_MASK;
+
+#endif /* INCAASC_USE_FDV */
+
+    /* Set reload value in BG */
+    pAsc->asc_bg = uiReloadValue;
+
+    /* Enable Baud Rate Generator */
+    SET_BIT(pAsc->asc_con, ASCCON_R);           /* R = 1 */
+}
+
+/*******************************************************************************
+*
+* serial_setopt - set the serial options
+*
+* Set the channel operating mode to that specified. Following options
+* are supported: CREAD, CSIZE, PARENB, and PARODD.
+*
+* Note, this routine disables the transmitter.  The calling routine
+* may have to re-enable it.
+*
+* RETURNS:
+* Returns 0 to indicate success, otherwise -1 is returned
+*/
+
+static int serial_setopt (void)
+{
+    ulong  con;
+
+    switch ( ASC_OPTIONS & ASCOPT_CSIZE )
+    {
+    /* 7-bit-data */
+    case ASCOPT_CS7:
+	con = ASCCON_M_7ASYNCPAR;   /* 7-bit-data and parity bit */
+	break;
+
+    /* 8-bit-data */
+    case ASCOPT_CS8:
+	if ( ASC_OPTIONS & ASCOPT_PARENB )
+	    con = ASCCON_M_8ASYNCPAR;   /* 8-bit-data and parity bit */
+	else
+	    con = ASCCON_M_8ASYNC;      /* 8-bit-data no parity */
+	break;
+
+    /*
+     *  only 7 and 8-bit frames are supported
+     *  if we don't use IOCTL extensions
+     */
+    default:
+	return -1;
+    }
+
+    if ( ASC_OPTIONS & ASCOPT_STOPB )
+	SET_BIT(con, ASCCON_STP);       /* 2 stop bits */
+    else
+	CLEAR_BIT(con, ASCCON_STP);     /* 1 stop bit */
+
+    if ( ASC_OPTIONS & ASCOPT_PARENB )
+	SET_BIT(con, ASCCON_PEN);           /* enable parity checking */
+    else
+	CLEAR_BIT(con, ASCCON_PEN);         /* disable parity checking */
+
+    if ( ASC_OPTIONS & ASCOPT_PARODD )
+	SET_BIT(con, ASCCON_ODD);       /* odd parity */
+    else
+	CLEAR_BIT(con, ASCCON_ODD);     /* even parity */
+
+    if ( ASC_OPTIONS & ASCOPT_CREAD )
+	SET_BIT(pAsc->asc_whbcon, ASCWHBCON_SETREN); /* Receiver enable */
+
+    pAsc->asc_con |= con;
+
+    return 0;
+}
+
+void serial_putc (const char c)
+{
+    uint txFl = 0;
+
+    if (c == '\n') serial_putc ('\r');
+
+    /* check do we have a free space in the TX FIFO */
+    /* get current filling level */
+    do
+    {
+	txFl = ( pAsc->asc_fstat & ASCFSTAT_TXFFLMASK ) >> ASCFSTAT_TXFFLOFF;
+    }
+    while ( txFl == INCAASC_TXFIFO_FULL );
+
+    pAsc->asc_tbuf = c; /* write char to Transmit Buffer Register */
+
+    /* check for errors */
+    if ( pAsc->asc_con & ASCCON_OE )
+    {
+	SET_BIT(pAsc->asc_whbcon, ASCWHBCON_CLROE);
+	return;
+    }
+}
+
+void serial_puts (const char *s)
+{
+    while (*s)
+    {
+	serial_putc (*s++);
+    }
+}
+
+int serial_getc (void)
+{
+    ulong symbol_mask;
+    char c;
+
+    while (!serial_tstc());
+
+    symbol_mask =
+	((ASC_OPTIONS & ASCOPT_CSIZE) == ASCOPT_CS7) ? (0x7f) : (0xff);
+
+    c = (char)(pAsc->asc_rbuf & symbol_mask);
+
+    return c;
+}
+
+int serial_tstc (void)
+{
+    int res = 1;
+
+    if ( (pAsc->asc_fstat & ASCFSTAT_RXFFLMASK) == 0 )
+    {
+	res = 0;
+    }
+    else if ( pAsc->asc_con & ASCCON_FE )
+    {
+	SET_BIT(pAsc->asc_whbcon, ASCWHBCON_CLRFE);
+	res = 0;
+    }
+    else if ( pAsc->asc_con & ASCCON_PE )
+    {
+	SET_BIT(pAsc->asc_whbcon, ASCWHBCON_CLRPE);
+	res = 0;
+    }
+    else if ( pAsc->asc_con & ASCCON_OE )
+    {
+	SET_BIT(pAsc->asc_whbcon, ASCWHBCON_CLROE);
+	res = 0;
+    }
+
+    return res;
+}
diff --git a/arch/mips/cpu/mips32/incaip/asc_serial.h b/arch/mips/cpu/mips32/incaip/asc_serial.h
new file mode 100644
index 0000000..7ffdcfa
--- /dev/null
+++ b/arch/mips/cpu/mips32/incaip/asc_serial.h
@@ -0,0 +1,177 @@
+/* incaAscSio.h - (INCA) ASC UART tty driver header */
+
+#ifndef __INCincaAscSioh
+#define __INCincaAscSioh
+
+#include <asm/inca-ip.h>
+
+/* channel operating modes */
+#define	ASCOPT_CSIZE	0x00000003
+#define	ASCOPT_CS7	0x00000001
+#define	ASCOPT_CS8	0x00000002
+#define	ASCOPT_PARENB	0x00000004
+#define	ASCOPT_STOPB	0x00000008
+#define	ASCOPT_PARODD	0x00000010
+#define	ASCOPT_CREAD	0x00000020
+
+#define ASC_OPTIONS		(ASCOPT_CREAD | ASCOPT_CS8)
+
+/* ASC input select (0 or 1) */
+#define CONSOLE_TTY	0
+
+/* use fractional divider for baudrate settings */
+#define INCAASC_USE_FDV
+
+#ifdef INCAASC_USE_FDV
+   #define INCAASC_FDV_LOW_BAUDRATE        71
+   #define INCAASC_FDV_HIGH_BAUDRATE       453
+#endif /*INCAASC_USE_FDV*/
+
+
+#define INCAASC_TXFIFO_FL       1
+#define INCAASC_RXFIFO_FL       1
+#define INCAASC_TXFIFO_FULL     16
+
+/* interrupt lines masks for the ASC device interrupts*/
+/* change these macroses if it's necessary */
+#define INCAASC_IRQ_LINE_ALL        0x000F0000  /* all IRQs */
+
+#define INCAASC_IRQ_LINE_TIR            0x00010000      /* TIR - Tx */
+#define INCAASC_IRQ_LINE_RIR            0x00020000      /* RIR - Rx */
+#define INCAASC_IRQ_LINE_EIR            0x00040000      /* EIR - Err */
+#define INCAASC_IRQ_LINE_TBIR           0x00080000      /* TBIR - Tx Buf*/
+
+/* interrupt controller access macros */
+#define ASC_INTERRUPTS_ENABLE(X)  \
+   *((volatile unsigned int*) INCA_IP_ICU_IM2_IER) |= X;
+#define ASC_INTERRUPTS_DISABLE(X) \
+   *((volatile unsigned int*) INCA_IP_ICU_IM2_IER) &= ~X;
+#define ASC_INTERRUPTS_CLEAR(X)   \
+   *((volatile unsigned int*) INCA_IP_ICU_IM2_ISR) = X;
+
+/* CLC register's bits and bitfields */
+#define ASCCLC_DISR        0x00000001
+#define ASCCLC_DISS        0x00000002
+#define ASCCLC_RMCMASK     0x0000FF00
+#define ASCCLC_RMCOFFSET   8
+
+/* CON register's bits and bitfields */
+#define ASCCON_MODEMASK 0x0007
+    #define ASCCON_M_8SYNC          0x0
+    #define ASCCON_M_8ASYNC         0x1
+    #define ASCCON_M_8IRDAASYNC     0x2
+    #define ASCCON_M_7ASYNCPAR      0x3
+    #define ASCCON_M_9ASYNC         0x4
+    #define ASCCON_M_8WAKEUPASYNC   0x5
+    #define ASCCON_M_8ASYNCPAR      0x7
+#define ASCCON_STP      0x0008
+#define ASCCON_REN      0x0010
+#define ASCCON_PEN      0x0020
+#define ASCCON_FEN      0x0040
+#define ASCCON_OEN      0x0080
+#define ASCCON_PE       0x0100
+#define ASCCON_FE       0x0200
+#define ASCCON_OE       0x0400
+#define ASCCON_FDE      0x0800
+#define ASCCON_ODD      0x1000
+#define ASCCON_BRS      0x2000
+#define ASCCON_LB       0x4000
+#define ASCCON_R        0x8000
+
+/* WHBCON register's bits and bitfields */
+#define ASCWHBCON_CLRREN    0x0010
+#define ASCWHBCON_SETREN    0x0020
+#define ASCWHBCON_CLRPE     0x0100
+#define ASCWHBCON_CLRFE     0x0200
+#define ASCWHBCON_CLROE     0x0400
+#define ASCWHBCON_SETPE     0x0800
+#define ASCWHBCON_SETFE     0x1000
+#define ASCWHBCON_SETOE     0x2000
+
+/* ABCON register's bits and bitfields */
+#define ASCABCON_ABEN       0x0001
+#define ASCABCON_AUREN      0x0002
+#define ASCABCON_ABSTEN     0x0004
+#define ASCABCON_ABDETEN    0x0008
+#define ASCABCON_FCDETEN    0x0010
+#define ASCABCON_EMMASK     0x0300
+    #define ASCABCON_EMOFF          8
+	#define ASCABCON_EM_DISAB       0x0
+	#define ASCABCON_EM_DURAB       0x1
+	#define ASCABCON_EM_ALWAYS      0x2
+#define ASCABCON_TXINV      0x0400
+#define ASCABCON_RXINV      0x0800
+
+/* FDV register mask, offset and bitfields*/
+#define ASCFDV_VALUE_MASK     0x000001FF
+
+/* WHBABCON register's bits and bitfields */
+#define ASCWHBABCON_SETABEN     0x0001
+#define ASCWHBABCON_CLRABEN     0x0002
+
+/* ABSTAT register's bits and bitfields */
+#define ASCABSTAT_FCSDET    0x0001
+#define ASCABSTAT_FCCDET    0x0002
+#define ASCABSTAT_SCSDET    0x0004
+#define ASCABSTAT_SCCDET    0x0008
+#define ASCABSTAT_DETWAIT   0x0010
+
+/* WHBABSTAT register's bits and bitfields */
+#define ASCWHBABSTAT_CLRFCSDET  0x0001
+#define ASCWHBABSTAT_SETFCSDET  0x0002
+#define ASCWHBABSTAT_CLRFCCDET  0x0004
+#define ASCWHBABSTAT_SETFCCDET  0x0008
+#define ASCWHBABSTAT_CLRSCSDET  0x0010
+#define ASCWHBABSTAT_SETSCSDET  0x0020
+#define ASCWHBABSTAT_SETSCCDET  0x0040
+#define ASCWHBABSTAT_CLRSCCDET  0x0080
+#define ASCWHBABSTAT_CLRDETWAIT 0x0100
+#define ASCWHBABSTAT_SETDETWAIT 0x0200
+
+/* TXFCON register's bits and bitfields */
+#define ASCTXFCON_TXFEN         0x0001
+#define ASCTXFCON_TXFFLU        0x0002
+#define ASCTXFCON_TXTMEN        0x0004
+#define ASCTXFCON_TXFITLMASK    0x3F00
+#define ASCTXFCON_TXFITLOFF     8
+
+/* RXFCON register's bits and bitfields */
+#define ASCRXFCON_RXFEN         0x0001
+#define ASCRXFCON_RXFFLU        0x0002
+#define ASCRXFCON_RXTMEN        0x0004
+#define ASCRXFCON_RXFITLMASK    0x3F00
+#define ASCRXFCON_RXFITLOFF     8
+
+/* FSTAT register's bits and bitfields */
+#define ASCFSTAT_RXFFLMASK      0x003F
+#define ASCFSTAT_TXFFLMASK      0x3F00
+#define ASCFSTAT_TXFFLOFF       8
+
+#define INCAASC_PMU_ENABLE(BIT) *((volatile ulong*)0xBF102000) |= (0x1 << BIT);
+
+typedef  struct         /* incaAsc_t */
+{
+    volatile unsigned long  asc_clc;                            /*0x0000*/
+    volatile unsigned long  asc_pisel;                          /*0x0004*/
+    volatile unsigned long  asc_rsvd1[2];   /* for mapping */   /*0x0008*/
+    volatile unsigned long  asc_con;                            /*0x0010*/
+    volatile unsigned long  asc_bg;                             /*0x0014*/
+    volatile unsigned long  asc_fdv;                            /*0x0018*/
+    volatile unsigned long  asc_pmw;        /* not used */      /*0x001C*/
+    volatile unsigned long  asc_tbuf;                           /*0x0020*/
+    volatile unsigned long  asc_rbuf;                           /*0x0024*/
+    volatile unsigned long  asc_rsvd2[2];   /* for mapping */   /*0x0028*/
+    volatile unsigned long  asc_abcon;                          /*0x0030*/
+    volatile unsigned long  asc_abstat;     /* not used */      /*0x0034*/
+    volatile unsigned long  asc_rsvd3[2];   /* for mapping */   /*0x0038*/
+    volatile unsigned long  asc_rxfcon;                         /*0x0040*/
+    volatile unsigned long  asc_txfcon;                         /*0x0044*/
+    volatile unsigned long  asc_fstat;                          /*0x0048*/
+    volatile unsigned long  asc_rsvd4;      /* for mapping */   /*0x004C*/
+    volatile unsigned long  asc_whbcon;                         /*0x0050*/
+    volatile unsigned long  asc_whbabcon;                       /*0x0054*/
+    volatile unsigned long  asc_whbabstat;  /* not used */      /*0x0058*/
+
+} incaAsc_t;
+
+#endif /* __INCincaAscSioh */
diff --git a/arch/mips/cpu/mips32/incaip/config.mk b/arch/mips/cpu/mips32/incaip/config.mk
new file mode 100644
index 0000000..568f333
--- /dev/null
+++ b/arch/mips/cpu/mips32/incaip/config.mk
@@ -0,0 +1,24 @@
+#
+# (C) Copyright 2011
+# 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
+#
+
+PLATFORM_CPPFLAGS += -mtune=4kc
diff --git a/arch/mips/cpu/mips32/incaip/incaip_clock.c b/arch/mips/cpu/mips32/incaip/incaip_clock.c
new file mode 100644
index 0000000..b65dfe0
--- /dev/null
+++ b/arch/mips/cpu/mips32/incaip/incaip_clock.c
@@ -0,0 +1,116 @@
+/*
+ * (C) Copyright 2003
+ * 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/inca-ip.h>
+
+
+/*******************************************************************************
+*
+* get_cpuclk - returns the frequency of the CPU.
+*
+* Gets the value directly from the INCA-IP hardware.
+*
+* RETURNS:
+*          150.000.000 for 150 MHz
+*          133.333.333 for 133 MHz (= 400MHz/3)
+*          100.000.000 for 100 MHz (= 400MHz/4)
+* NOTE:
+*   This functions should be used by the hardware driver to get the correct
+*   frequency of the CPU. Don't use the macros, which are set to init the CPU
+*   frequency in the ROM code.
+*/
+uint incaip_get_cpuclk (void)
+{
+	/*-------------------------------------------------------------------------*/
+	/* CPU Clock Input Multiplexer (MUX I)                                     */
+	/* Multiplexer MUX I selects the maximum input clock to the CPU.           */
+	/*-------------------------------------------------------------------------*/
+	if (*((volatile ulong *) INCA_IP_CGU_CGU_MUXCR) &
+	    INCA_IP_CGU_CGU_MUXCR_MUXI) {
+		/* MUX I set to 150 MHz clock */
+		return 150000000;
+	} else {
+		/* MUX I set to 100/133 MHz clock */
+		if (*((volatile ulong *) INCA_IP_CGU_CGU_DIVCR) & 0x40) {
+			/* Division value is 1/3, maximum CPU operating */
+			/* frequency is 133.3 MHz                       */
+			return 133333333;
+		} else {
+			/* Division value is 1/4, maximum CPU operating */
+			/* frequency is 100 MHz                         */
+			return 100000000;
+		}
+	}
+}
+
+/*******************************************************************************
+*
+* get_fpiclk - returns the frequency of the FPI bus.
+*
+* Gets the value directly from the INCA-IP hardware.
+*
+* RETURNS: Frquency in Hz
+*
+* NOTE:
+*   This functions should be used by the hardware driver to get the correct
+*   frequency of the CPU. Don't use the macros, which are set to init the CPU
+*   frequency in the ROM code.
+*   The calculation for the
+*/
+uint incaip_get_fpiclk (void)
+{
+	uint clkCPU;
+
+	clkCPU = incaip_get_cpuclk ();
+
+	switch (*((volatile ulong *) INCA_IP_CGU_CGU_DIVCR) & 0xC) {
+	case 0x4:
+		return clkCPU >> 1;	/* devided by 2 */
+		break;
+	case 0x8:
+		return clkCPU >> 2;	/* devided by 4 */
+		break;
+	default:
+		return clkCPU;
+		break;
+	}
+}
+
+int incaip_set_cpuclk (void)
+{
+	extern void ebu_init(long);
+	extern void cgu_init(long);
+	extern void sdram_init(long);
+	char tmp[64];
+	ulong cpuclk;
+
+	if (getenv_f("cpuclk", tmp, sizeof (tmp)) > 0) {
+		cpuclk = simple_strtoul (tmp, NULL, 10) * 1000000;
+		cgu_init (cpuclk);
+		ebu_init (cpuclk);
+		sdram_init (cpuclk);
+	}
+
+	return 0;
+}
diff --git a/arch/mips/cpu/mips32/incaip/incaip_wdt.S b/arch/mips/cpu/mips32/incaip/incaip_wdt.S
new file mode 100644
index 0000000..3ade3cd
--- /dev/null
+++ b/arch/mips/cpu/mips32/incaip/incaip_wdt.S
@@ -0,0 +1,71 @@
+/*
+ *  INCA-IP Watchdog timer management code.
+ *
+ *  Copyright (c) 2003	Wolfgang Denk <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 <config.h>
+#include <asm/regdef.h>
+
+
+#define WD_BASE            0xb8000000
+#define WD_CON0(value)     0x0020(value)
+#define WD_CON1(value)     0x0024(value)
+#define WD_DISABLE         0x00000008
+#define WD_ENABLE          0x00000000
+#define WD_WRITE_PW        0xFFFC00F8
+#define WD_WRITE_ENDINIT   0xFFFC00F3
+#define WD_WRITE_INIT      0xFFFC00F2
+
+
+	.globl	disable_incaip_wdt
+disable_incaip_wdt:
+	li	t0, WD_BASE
+
+	/* Calculate password.
+	 */
+	lw	t2, WD_CON1(t0)
+	and	t2, 0xC
+
+	lw	t3, WD_CON0(t0)
+	and	t3, 0xFFFFFF01
+
+	or	t3, t2
+	or	t3, 0xF0
+
+	sw	t3, WD_CON0(t0)		/* write password */
+
+	/* Clear ENDINIT.
+	 */
+	li	t1, WD_WRITE_INIT
+	sw	t1, WD_CON0(t0)
+
+
+	li	t1, WD_DISABLE
+	sw	t1, WD_CON1(t0)		/* disable watchdog */
+	li	t1, WD_WRITE_PW
+	sw	t1, WD_CON0(t0)		/* write password */
+	li	t1, WD_WRITE_ENDINIT
+	sw	t1, WD_CON0(t0)		/* end command */
+
+	jr	ra
+	nop