bsps/powerpc: Move libcpu content to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

3 files changed, 1605 insertions, 0 deletions

diff --git a/bsps/powerpc/gen83xx/dev/gtm.c b/bsps/powerpc/gen83xx/dev/gtm.c
new file mode 100644
index 0000000000..2f13a1d8cd
--- /dev/null
+++ b/bsps/powerpc/gen83xx/dev/gtm.c
@@ -0,0 +1,262 @@
+/**
+ * @file
+ *
+ * @brief Source file for timer functions.
+ */
+
+/*
+ * Copyright (c) 2008
+ * Embedded Brains GmbH
+ * Obere Lagerstr. 30
+ * D-82178 Puchheim
+ * Germany
+ * rtems@embedded-brains.de
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#include <rtems/bspIo.h>
+
+#include <mpc83xx/mpc83xx.h>
+#include <mpc83xx/gtm.h>
+
+#define RTEMS_STATUS_CHECKS_USE_PRINTK
+
+#include <rtems/status-checks.h>
+
+#define MPC83XX_GTM_CHECK_INDEX( timer) \
+	if (( timer) < 0 || ( timer) >= MPC83XX_GTM_NUMBER) { \
+		return RTEMS_INVALID_NUMBER; \
+	}
+
+#define GTM_MODULE(timer)       ((timer)/4)
+#define GTM_MODULE_TIMER(timer) ((timer)%4)
+#define GTM_HIGH(timer)         (GTM_MODULE_TIMER(timer)/2)
+#define GTM_LOW(timer)          (GTM_MODULE_TIMER(timer)%2)
+
+#define MPC83XX_GTM_CLOCK_MASK MPC83XX_GTM_CLOCK_EXTERN
+
+static const uint8_t mpc83xx_gmt_interrupt_vector_table [MPC83XX_GTM_NUMBER] = { 90, 78, 84, 72, 91, 79, 85, 73 };
+
+rtems_status_code mpc83xx_gtm_initialize( int timer, int clock)
+{
+	rtems_status_code sc = RTEMS_SUCCESSFUL;
+	rtems_interrupt_level level;
+
+	unsigned mask = 0xfU << (GTM_LOW(timer) * 4);
+	unsigned flags = 0x3U << (GTM_LOW(timer) * 4);
+	uint8_t reg = 0;
+
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	rtems_interrupt_disable( level);
+
+	reg = mpc83xx.gtm [GTM_MODULE(timer)].gtcfr [GTM_HIGH(timer)].reg;
+	mpc83xx.gtm [GTM_MODULE(timer)].gtcfr [GTM_HIGH(timer)].reg = 
+	  (uint8_t) ((reg & ~mask) | flags);
+
+	mpc83xx.gtm [GTM_MODULE(timer)]
+	  .gt_tim_regs [GTM_HIGH(timer)]
+	  .gtmdr [GTM_LOW(timer)] = 0;
+
+	rtems_interrupt_enable( level);
+
+	sc = mpc83xx_gtm_set_clock( timer, clock);
+	RTEMS_CHECK_SC( sc, "Set clock");
+
+	sc = mpc83xx_gtm_set_value( timer, 0);
+	RTEMS_CHECK_SC( sc, "Set value");
+
+	sc = mpc83xx_gtm_set_reference( timer, 0);
+	RTEMS_CHECK_SC( sc, "Set reference");
+
+	sc = mpc83xx_gtm_set_prescale( timer, 0);
+	RTEMS_CHECK_SC( sc, "Set prescale");
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_enable_restart( int timer, bool enable)
+{
+	rtems_interrupt_level level;
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	rtems_interrupt_disable( level);
+
+	if (enable) {
+		mpc83xx.gtm [GTM_MODULE(timer)]
+		  .gt_tim_regs [GTM_HIGH(timer)]
+		  .gtmdr [GTM_LOW(timer)] |= 0x0008;
+	} else {
+		mpc83xx.gtm [GTM_MODULE(timer)]
+		  .gt_tim_regs [GTM_HIGH(timer)]
+		  .gtmdr [GTM_LOW(timer)] &= ~0x0008;
+	}
+
+	rtems_interrupt_enable( level);
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_set_clock( int timer, int clock)
+{
+	rtems_interrupt_level level;
+	uint16_t reg = 0;
+
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	if (clock & ~MPC83XX_GTM_CLOCK_MASK) {
+		return RTEMS_INVALID_CLOCK;
+	}
+
+	rtems_interrupt_disable( level);
+
+	reg = mpc83xx.gtm [GTM_MODULE(timer)]
+	  .gt_tim_regs [GTM_HIGH(timer)]
+	  .gtmdr [GTM_LOW(timer)];
+	mpc83xx.gtm [GTM_MODULE(timer)]
+	  .gt_tim_regs [GTM_HIGH(timer)]
+	  .gtmdr [GTM_LOW(timer)] = (reg & ~MPC83XX_GTM_CLOCK_MASK) | clock;
+
+	rtems_interrupt_enable( level);
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_get_clock( int timer, int *clock)
+{
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	*clock = mpc83xx.gtm [GTM_MODULE(timer)]
+	  .gt_tim_regs [GTM_HIGH(timer)]
+	  .gtmdr [GTM_LOW(timer)] & MPC83XX_GTM_CLOCK_MASK;
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_start( int timer)
+{
+	rtems_interrupt_level level;
+	uint8_t flags = 0x2 << (GTM_LOW(timer) * 4);
+
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	rtems_interrupt_disable( level);
+	mpc83xx.gtm [GTM_MODULE(timer)]
+.gtcfr [GTM_HIGH(timer)].reg &= ~flags;
+	rtems_interrupt_enable( level);
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_stop( int timer)
+{
+	rtems_interrupt_level level;
+	uint8_t flags = 0x2 << (GTM_LOW(timer) * 4);
+
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	rtems_interrupt_disable( level);
+	mpc83xx.gtm [GTM_MODULE(timer)].gtcfr [GTM_HIGH(timer)].reg |= flags;
+	rtems_interrupt_enable( level);
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_set_value( int timer, uint16_t value)
+{
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtcnr [GTM_LOW(timer)] = value;
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_get_value( int timer, uint16_t *value)
+{
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	*value = mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtcnr [GTM_LOW(timer)];
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_set_reference( int timer, uint16_t reference)
+{
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtrfr [GTM_LOW(timer)] = reference;
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_get_reference( int timer, uint16_t *reference)
+{
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	*reference = mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtrfr [GTM_LOW(timer)];
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_set_prescale( int timer, uint8_t prescale)
+{
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	mpc83xx.gtm [GTM_MODULE(timer)].gtpsr [GTM_MODULE_TIMER(timer)] = prescale;
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_get_prescale( int timer, uint8_t *prescale)
+{
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	*prescale = mpc83xx.gtm [GTM_MODULE(timer)].gtpsr [GTM_MODULE_TIMER(timer)];
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_interrupt_get_vector( int timer, rtems_vector_number *vector)
+{
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	*vector = mpc83xx_gmt_interrupt_vector_table [timer];
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_interrupt_enable( int timer)
+{
+	rtems_interrupt_level level;
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	rtems_interrupt_disable( level);
+	mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtmdr [GTM_LOW(timer)] |= 0x0010;
+	rtems_interrupt_enable( level);
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_interrupt_disable( int timer)
+{
+	rtems_interrupt_level level;
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	rtems_interrupt_disable( level);
+	mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtmdr [GTM_LOW(timer)] &= ~0x0010;
+	rtems_interrupt_enable( level);
+
+	return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code mpc83xx_gtm_interrupt_clear( int timer)
+{
+	MPC83XX_GTM_CHECK_INDEX( timer);
+
+	mpc83xx.gtm [GTM_MODULE(timer)].gtevr [GTM_MODULE_TIMER(timer)] = 0x0002;
+
+	return RTEMS_SUCCESSFUL;
+}
diff --git a/bsps/powerpc/gen83xx/dev/mpc83xx_i2cdrv.c b/bsps/powerpc/gen83xx/dev/mpc83xx_i2cdrv.c
new file mode 100644
index 0000000000..b4c3d477f7
--- /dev/null
+++ b/bsps/powerpc/gen83xx/dev/mpc83xx_i2cdrv.c
@@ -0,0 +1,668 @@
+/*===============================================================*\
+| Project: RTEMS support for MPC83xx                              |
++-----------------------------------------------------------------+
+|                    Copyright (c) 2007                           |
+|                    Embedded Brains GmbH                         |
+|                    Obere Lagerstr. 30                           |
+|                    D-82178 Puchheim                             |
+|                    Germany                                      |
+|                    rtems@embedded-brains.de                     |
++-----------------------------------------------------------------+
+| The license and distribution terms for this file may be         |
+| found in the file LICENSE in this distribution or at            |
+|                                                                 |
+| http://www.rtems.org/license/LICENSE.                           |
+|                                                                 |
++-----------------------------------------------------------------+
+| this file contains the MPC83xx I2C driver                       |
+\*===============================================================*/
+#include <stdlib.h>
+#include <bsp.h>
+#include <bsp/irq.h>
+#include <mpc83xx/mpc83xx_i2cdrv.h>
+#include <rtems/error.h>
+#include <rtems/bspIo.h>
+#include <errno.h>
+#include <rtems/libi2c.h>
+
+#undef DEBUG
+
+#if defined(LIBBSP_POWERPC_GEN83XX_BSP_H)
+  #define I2CCR_MEN  (1 << 7)   /* module enable */
+#elif defined(LIBBSP_POWERPC_MPC55XXEVB_BSP_H)
+  #define I2CCR_MDIS (1 << 7)   /* module disable */
+#endif
+#define I2CCR_MIEN (1 << 6)     /* module interrupt enable */
+#define I2CCR_MSTA (1 << 5)     /* 0->1 generates a start condiiton, 1->0 a stop */
+#define I2CCR_MTX  (1 << 4)     /* 0 = receive mode, 1 = transmit mode           */
+#define I2CCR_TXAK (1 << 3)     /* 0 = send ack 1 = send nak during receive      */
+#define I2CCR_RSTA (1 << 2)     /* 1 = send repeated start condition             */
+#define I2CCR_BCST (1 << 0)     /* 0 = disable 1 = enable broadcast accept       */
+
+#define I2CSR_MCF  (1 << 7)     /* data transfer (0=transfer in progres) */
+#define I2CSR_MAAS (1 << 6)     /* addessed as slave   */
+#define I2CSR_MBB  (1 << 5)     /* bus busy            */
+#define I2CSR_MAL  (1 << 4)     /* arbitration lost    */
+#define I2CSR_BCSTM (1 << 3)    /* broadcast match     */
+#define I2CSR_SRW  (1 << 2)     /* slave read/write    */
+#define I2CSR_MIF  (1 << 1)     /* module interrupt    */
+#define I2CSR_RXAK (1 << 0)     /* receive acknowledge */
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static rtems_status_code mpc83xx_i2c_find_clock_divider
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   determine proper divider value                                          |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ uint8_t *result,                        /* result value                   */
+ int divider                             /* requested divider              */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+  int i;
+  int fdr_val;
+  rtems_status_code sc = RTEMS_SUCCESSFUL;
+  struct {
+    int divider;
+    int fdr_val;
+  } dividers[] ={
+#if defined(LIBBSP_POWERPC_GEN83XX_BSP_H)
+    {  256,0x20 }, {  288,0x21 }, {  320,0x22 }, {  352,0x23 },
+    {  384,0x00 }, {  416,0x01 }, {  448,0x25 }, {  480,0x02 },
+    {  512,0x26 }, {  576,0x03 }, {  640,0x04 }, {  704,0x05 },
+    {  768,0x29 }, {  832,0x06 }, {  896,0x2a }, { 1024,0x07 },
+    { 1152,0x08 }, { 1280,0x09 }, { 1536,0x0A }, { 1792,0x2E },
+    { 1920,0x0B }, { 2048,0x2F }, { 2304,0x0C }, { 2560,0x0D },
+    { 3072,0x0E }, { 3584,0x32 }, { 3840,0x0F }, { 4096,0x33 },
+    { 4608,0x10 }, { 5120,0x11 }, { 6144,0x12 }, { 7168,0x36 },
+    { 7680,0x13 }, { 8192,0x37 }, { 9216,0x14 }, {10240,0x15 },
+    {12288,0x16 }, {14336,0x3A }, {15360,0x17 }, {16384,0x3B },
+    {18432,0x18 }, {20480,0x19 }, {24576,0x1A }, {28672,0x3E },
+    {30720,0x1B }, {32768,0x3F }, {36864,0x1C }, {40960,0x1D },
+    {49152,0x1E }, {61440,0x1F }
+#elif defined(LIBBSP_POWERPC_MPC55XXEVB_BSP_H)
+    { 768, 0x31 }
+#endif
+  };
+
+  if (divider <= 0) {
+    sc = RTEMS_INVALID_NUMBER;
+  }
+
+  if (sc == RTEMS_SUCCESSFUL) {
+    sc = RTEMS_INVALID_NUMBER;
+    for (i = 0, fdr_val = -1; i < sizeof(dividers)/sizeof(dividers[0]); i++) {
+      fdr_val = dividers[i].fdr_val;
+      if (dividers[i].divider >= divider)
+	{
+	  sc = RTEMS_SUCCESSFUL;
+	  *result = fdr_val;
+	  break;
+	}
+    }
+  }
+  return sc;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static int mpc83xx_i2c_wait
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   wait for i2c to become idle                                             |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ mpc83xx_i2c_softc_t *softc_ptr,          /* handle              */
+ uint8_t              desired_status,     /* desired status word */
+ uint8_t              status_mask         /* status word mask    */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+  uint8_t act_status;
+  rtems_status_code rc;
+  uint32_t tout;
+
+#if defined(DEBUG)
+  printk("mpc83xx_i2c_wait called... ");
+#endif
+
+  if (softc_ptr->initialized) {
+    /*
+     * enable interrupt mask
+     */
+    softc_ptr->reg_ptr->i2ccr |= I2CCR_MIEN;
+    rc = rtems_semaphore_obtain(softc_ptr->irq_sema_id,RTEMS_WAIT,100);
+    if (rc != RTEMS_SUCCESSFUL) {
+      return rc;
+    }
+  }
+  else {
+    tout = 0;
+    do {
+      if (tout++ > 1000000) {
+#if defined(DEBUG)
+	printk("... exit with RTEMS_TIMEOUT\r\n");
+#endif
+	return RTEMS_TIMEOUT;
+      }
+    } while (!(softc_ptr->reg_ptr->i2csr & I2CSR_MIF));
+  }
+  softc_ptr->reg_ptr->i2ccr &= ~I2CCR_MIEN;
+
+  act_status = softc_ptr->reg_ptr->i2csr;
+  if ((act_status  & status_mask) != desired_status) {
+#if defined(DEBUG)
+    printk("... exit with RTEMS_IO_ERROR\r\n");
+#endif
+    return RTEMS_IO_ERROR;
+  }
+#if defined(DEBUG)
+	printk("... exit OK\r\n");
+#endif
+  return RTEMS_SUCCESSFUL;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static void mpc83xx_i2c_irq_handler
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   handle interrupts                                                       |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_irq_hdl_param handle     /* handle, is softc_ptr structure          */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    <none>                                                                 |
+\*=========================================================================*/
+{
+  mpc83xx_i2c_softc_t *softc_ptr = (mpc83xx_i2c_softc_t *)handle;
+
+  /*
+   * clear IRQ flag
+   */
+  #if defined(LIBBSP_POWERPC_GEN83XX_BSP_H)
+    softc_ptr->reg_ptr->i2csr &= ~I2CSR_MIF;
+  #elif defined(LIBBSP_POWERPC_MPC55XXEVB_BSP_H)
+    softc_ptr->reg_ptr->i2csr = I2CSR_MIF;
+  #endif
+
+  /*
+   * disable interrupt mask
+   */
+  softc_ptr->reg_ptr->i2ccr &= ~I2CCR_MIEN;
+  if (softc_ptr->initialized) {
+    rtems_semaphore_release(softc_ptr->irq_sema_id);
+  }
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static void mpc83xx_i2c_irq_on_off
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   enable/disable interrupts (void, handled at different position)         |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ const
+ rtems_irq_connect_data *irq_conn_data   /* irq connect data                */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    <none>                                                                 |
+\*=========================================================================*/
+{
+}
+
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static int mpc83xx_i2c_irq_isOn
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   check state of interrupts, void, done differently                       |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ const
+ rtems_irq_connect_data *irq_conn_data  /* irq connect data                */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    TRUE, if enabled                                                       |
+\*=========================================================================*/
+{
+  return (TRUE);
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static void mpc83xx_i2c_install_irq_handler
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   (un-)install the interrupt handler                                      |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ mpc83xx_i2c_softc_t *softc_ptr,        /* ptr to control structure        */
+ int install                            /* TRUE: install, FALSE: remove    */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    <none>                                                                 |
+\*=========================================================================*/
+{
+  rtems_status_code rc = RTEMS_SUCCESSFUL;
+
+  rtems_irq_connect_data irq_conn_data = {
+    softc_ptr->irq_number,
+    mpc83xx_i2c_irq_handler,           /* rtems_irq_hdl           */
+    (rtems_irq_hdl_param)softc_ptr,    /* (rtems_irq_hdl_param)   */
+    mpc83xx_i2c_irq_on_off,            /* (rtems_irq_enable)      */
+    mpc83xx_i2c_irq_on_off,            /* (rtems_irq_disable)     */
+    mpc83xx_i2c_irq_isOn               /* (rtems_irq_is_enabled)  */
+  };
+
+  /*
+   * (un-)install handler for I2C device
+   */
+  if (install) {
+    /*
+     * create semaphore for IRQ synchronization
+     */
+    rc = rtems_semaphore_create(rtems_build_name('i','2','c','s'),
+				0,
+				RTEMS_FIFO
+				| RTEMS_SIMPLE_BINARY_SEMAPHORE,
+				0,
+				&softc_ptr->irq_sema_id);
+    if (rc != RTEMS_SUCCESSFUL) {
+      rtems_panic("I2C: cannot create semaphore");
+    }
+    if (!BSP_install_rtems_irq_handler (&irq_conn_data)) {
+      rtems_panic("I2C: cannot install IRQ handler");
+    }
+  }
+  else {
+    if (!BSP_remove_rtems_irq_handler (&irq_conn_data)) {
+      rtems_panic("I2C: cannot uninstall IRQ handler");
+    }
+    /*
+     * delete sync semaphore
+     */
+    if (softc_ptr->irq_sema_id != 0) {
+      rc = rtems_semaphore_delete(softc_ptr->irq_sema_id);
+      if (rc != RTEMS_SUCCESSFUL) {
+	rtems_panic("I2C: cannot delete semaphore");
+      }
+    }
+  }
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static rtems_status_code mpc83xx_i2c_init
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   initialize the driver                                                   |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh                  /* bus specifier structure        */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+  mpc83xx_i2c_softc_t *softc_ptr = &(((mpc83xx_i2c_desc_t *)(bh))->softc);
+  uint8_t fdr_val;
+  int errval;
+#if defined(DEBUG)
+  printk("mpc83xx_i2c_init called... ");
+#endif
+  /*
+   * init HW registers
+   */
+  /*
+   * init frequency divider to 100kHz
+   */
+  errval = mpc83xx_i2c_find_clock_divider(&fdr_val,
+					  softc_ptr->base_frq/100000);
+  if (errval != 0) {
+    return errval;
+  }
+  softc_ptr->reg_ptr->i2cfdr = fdr_val;
+  /*
+   * init digital filter sampling rate
+   */
+  softc_ptr->reg_ptr->i2cdfsrr = 0x10 ; /* no special filtering needed */
+  /*
+   * set own slave address to broadcast (0x00)
+   */
+  softc_ptr->reg_ptr->i2cadr = 0x00 ;
+
+  /*
+   * set control register to module enable
+   */
+  #if defined(LIBBSP_POWERPC_GEN83XX_BSP_H)
+    softc_ptr->reg_ptr->i2ccr = I2CCR_MEN;
+  #elif defined(LIBBSP_POWERPC_MPC55XXEVB_BSP_H)
+    softc_ptr->reg_ptr->i2ccr = 0;
+  #endif
+
+  /*
+   * init interrupt stuff
+   */
+  mpc83xx_i2c_install_irq_handler(softc_ptr,TRUE);
+
+  /*
+   * mark, that we have initialized
+   */
+  softc_ptr->initialized = TRUE;
+#if defined(DEBUG)
+  printk("... exit OK\r\n");
+#endif
+  return RTEMS_SUCCESSFUL;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static rtems_status_code mpc83xx_i2c_send_start
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   send a start condition to bus                                           |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh                  /* bus specifier structure        */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+  mpc83xx_i2c_softc_t *softc_ptr = &(((mpc83xx_i2c_desc_t *)(bh))->softc);
+
+#if defined(DEBUG)
+  printk("mpc83xx_i2c_send_start called... ");
+#endif
+  if (0 != (softc_ptr->reg_ptr->i2ccr & I2CCR_MSTA)) {
+    /*
+     * already started, so send a "repeated start"
+     */
+    softc_ptr->reg_ptr->i2ccr |= I2CCR_RSTA;
+  }
+  else {
+    softc_ptr->reg_ptr->i2ccr |= I2CCR_MSTA;
+  }
+
+#if defined(DEBUG)
+  printk("... exit OK\r\n");
+#endif
+  return 0;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static rtems_status_code mpc83xx_i2c_send_stop
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   send a stop condition to bus                                            |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh                  /* bus specifier structure        */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+  mpc83xx_i2c_softc_t *softc_ptr = &(((mpc83xx_i2c_desc_t *)(bh))->softc);
+
+#if defined(DEBUG)
+  printk("mpc83xx_i2c_send_stop called... ");
+#endif
+  softc_ptr->reg_ptr->i2ccr &= ~I2CCR_MSTA;
+  /*
+   * wait, 'til stop has been executed
+   */
+  while (0 != (softc_ptr->reg_ptr->i2csr & I2CSR_MBB)) {
+    rtems_task_wake_after(RTEMS_YIELD_PROCESSOR);
+  }
+#if defined(DEBUG)
+  printk("... exit OK\r\n");
+#endif
+  return 0;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static rtems_status_code mpc83xx_i2c_send_addr
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   address a slave device on the bus                                       |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh,                 /* bus specifier structure        */
+ uint32_t addr,                          /* address to send on bus         */
+ int rw                                  /* 0=write,1=read                 */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+  mpc83xx_i2c_softc_t *softc_ptr = &(((mpc83xx_i2c_desc_t *)(bh))->softc);
+  uint8_t addr_byte;
+  rtems_status_code rc;
+
+#if defined(DEBUG)
+  printk("mpc83xx_i2c_send_addr called... ");
+#endif
+  softc_ptr->reg_ptr->i2ccr |= I2CCR_MTX;
+  /*
+   * determine, whether short or long address is needed, determine rd/wr
+   */
+  if (addr > 0x7f) {
+    addr_byte = (0xf0
+		 | ((addr >> 7) & 0x06)
+		 | ((rw) ? 1 : 0));
+    /*
+     * send first byte
+     */
+    softc_ptr->reg_ptr->i2cdr = addr_byte;
+    /*
+     * wait for successful transfer
+     */
+    rc = mpc83xx_i2c_wait(softc_ptr, I2CSR_MCF, I2CSR_MCF | I2CSR_RXAK);
+    if (rc != RTEMS_SUCCESSFUL) {
+#if defined(DEBUG)
+      printk("... exit rc=%d\r\n",rc);
+#endif
+      return rc;
+    }
+  }
+  /*
+   * send (final) byte
+   */
+  addr_byte = ((addr << 1)
+	       | ((rw) ? 1 : 0));
+
+  softc_ptr->reg_ptr->i2cdr = addr_byte;
+  /*
+   * wait for successful transfer
+   */
+  rc = mpc83xx_i2c_wait(softc_ptr, I2CSR_MCF, I2CSR_MCF | I2CSR_RXAK);
+
+#if defined(DEBUG)
+  printk("... exit rc=%d\r\n",rc);
+#endif
+  return rc;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static int mpc83xx_i2c_read_bytes
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   receive some bytes from I2C device                                      |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh,                 /* bus specifier structure        */
+ unsigned char *buf,                     /* buffer to store bytes          */
+ int len                                 /* number of bytes to receive     */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    number of bytes received or (negative) error code                      |
+\*=========================================================================*/
+{
+  mpc83xx_i2c_softc_t *softc_ptr = &(((mpc83xx_i2c_desc_t *)(bh))->softc);
+  rtems_status_code rc;
+  unsigned char *p = buf;
+
+#if defined(DEBUG)
+  printk("mpc83xx_i2c_read_bytes called... ");
+#endif
+  softc_ptr->reg_ptr->i2ccr &= ~I2CCR_MTX;
+  softc_ptr->reg_ptr->i2ccr &= ~I2CCR_TXAK;
+  /*
+   * FIXME: do we need to deactivate TXAK from the start,
+   * when only one byte is to be received?
+   */
+  /*
+   * we need a dummy transfer here to start the first read
+   */
+  softc_ptr->reg_ptr->i2cdr;
+
+  while (len-- > 0) {
+    if (len == 0) {
+      /*
+       * last byte is not acknowledged
+       */
+      softc_ptr->reg_ptr->i2ccr |= I2CCR_TXAK;
+    }
+    /*
+     * wait 'til end of transfer
+     */
+    rc = mpc83xx_i2c_wait(softc_ptr, I2CSR_MCF, I2CSR_MCF);
+    if (rc != RTEMS_SUCCESSFUL) {
+#if defined(DEBUG)
+      printk("... exit rc=%d\r\n",-rc);
+#endif
+      return -rc;
+    }
+    *p++ = softc_ptr->reg_ptr->i2cdr;
+
+  }
+
+ /*
+  * wait 'til end of last transfer
+  */
+  rc = mpc83xx_i2c_wait(softc_ptr, I2CSR_MCF, I2CSR_MCF);
+
+#if defined(DEBUG)
+  printk("... exit OK, rc=%d\r\n",p-buf);
+#endif
+  return p - buf;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static int mpc83xx_i2c_write_bytes
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   send some bytes to I2C device                                           |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh,                 /* bus specifier structure        */
+ unsigned char *buf,                     /* buffer to send                 */
+ int len                                 /* number of bytes to send        */
+
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    number of bytes sent or (negative) error code                          |
+\*=========================================================================*/
+{
+  mpc83xx_i2c_softc_t *softc_ptr = &(((mpc83xx_i2c_desc_t *)(bh))->softc);
+  rtems_status_code rc;
+  unsigned char *p = buf;
+
+#if defined(DEBUG)
+  printk("mpc83xx_i2c_write_bytes called... ");
+#endif
+  softc_ptr->reg_ptr->i2ccr =
+    (softc_ptr->reg_ptr->i2ccr & ~I2CCR_TXAK) | I2CCR_MTX;
+  while (len-- > 0) {
+    int rxack = len != 0 ? I2CSR_RXAK : 0;
+
+    softc_ptr->reg_ptr->i2cdr = *p++;
+    /*
+     * wait 'til end of transfer
+     */
+    rc = mpc83xx_i2c_wait(softc_ptr, I2CSR_MCF, I2CSR_MCF | rxack);
+    if (rc != RTEMS_SUCCESSFUL) {
+#if defined(DEBUG)
+      printk("... exit rc=%d\r\n",-rc);
+#endif
+      return -rc;
+    }
+  }
+#if defined(DEBUG)
+  printk("... exit OK, rc=%d\r\n",p-buf);
+#endif
+  return p - buf;
+}
+
+rtems_libi2c_bus_ops_t mpc83xx_i2c_ops = {
+  .init = mpc83xx_i2c_init,
+  .send_start = mpc83xx_i2c_send_start,
+  .send_stop = mpc83xx_i2c_send_stop,
+  .send_addr = mpc83xx_i2c_send_addr,
+  .read_bytes = mpc83xx_i2c_read_bytes,
+  .write_bytes = mpc83xx_i2c_write_bytes,
+};
+
diff --git a/bsps/powerpc/gen83xx/dev/mpc83xx_spidrv.c b/bsps/powerpc/gen83xx/dev/mpc83xx_spidrv.c
new file mode 100644
index 0000000000..5534b4b72a
--- /dev/null
+++ b/bsps/powerpc/gen83xx/dev/mpc83xx_spidrv.c
@@ -0,0 +1,675 @@
+/*===============================================================*\
+| Project: RTEMS support for MPC83xx                              |
++-----------------------------------------------------------------+
+|                    Copyright (c) 2007                           |
+|                    Embedded Brains GmbH                         |
+|                    Obere Lagerstr. 30                           |
+|                    D-82178 Puchheim                             |
+|                    Germany                                      |
+|                    rtems@embedded-brains.de                     |
++-----------------------------------------------------------------+
+| The license and distribution terms for this file may be         |
+| found in the file LICENSE in this distribution or at            |
+|                                                                 |
+| http://www.rtems.org/license/LICENSE.                           |
+|                                                                 |
++-----------------------------------------------------------------+
+| this file contains the MPC83xx SPI driver                       |
+| NOTE: it uses the same API as the I2C driver                    |
+\*===============================================================*/
+#include <stdlib.h>
+#include <bsp.h>
+#include <bsp/irq.h>
+#include <mpc83xx/mpc83xx.h>
+#include <mpc83xx/mpc83xx_spidrv.h>
+#include <rtems/error.h>
+#include <rtems/bspIo.h>
+#include <errno.h>
+#include <rtems/libi2c.h>
+
+#undef DEBUG
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static rtems_status_code mpc83xx_spi_baud_to_mode
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   determine proper divider value                                          |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ uint32_t baudrate,                      /* desired baudrate               */
+ uint32_t base_frq,                      /* input frequency                */
+ uint32_t *spimode                       /* result value                   */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+  uint32_t divider;
+  uint32_t tmpmode = 0;
+  /*
+   * determine clock divider and DIV16 bit
+   */
+  divider = (base_frq+baudrate-1)/baudrate;
+  if (divider > 64) {
+    tmpmode = MPC83XX_SPIMODE_DIV16;
+    divider /= 16;
+  }
+  if ((divider <  1) ||
+      (divider > 64)) {
+    return RTEMS_INVALID_NUMBER;
+  }
+  else {
+    tmpmode |= MPC83XX_SPIMODE_PM(divider/4-1);
+  }
+  *spimode = tmpmode;
+  return RTEMS_SUCCESSFUL;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static rtems_status_code mpc83xx_spi_char_mode
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   determine proper value for character size                               |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ mpc83xx_spi_softc_t *softc_ptr,         /* handle                         */
+ uint32_t bits_per_char,                 /* bits per character             */
+ bool     lsb_first,                     /* TRUE: send LSB first           */
+ uint32_t *spimode                       /* result value                   */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+  uint32_t tmpmode;
+
+  if (bits_per_char == 32) {
+    tmpmode = 0;
+    softc_ptr->bytes_per_char = 4;
+    softc_ptr->bit_shift      = 0;
+  }
+  else {
+    if (lsb_first) {
+      /*
+       * non-reversed data (LSB first): 4..16 bits valid
+       * always aligned to bit 16 of data register
+       */
+      if ((bits_per_char >= 4) &&
+	  (bits_per_char <= 16)) {
+	tmpmode = MPC83XX_SPIMODE_LEN( bits_per_char-1);
+	softc_ptr->bytes_per_char = (bits_per_char > 8) ? 2 : 1;
+	softc_ptr->bit_shift      = 16-bits_per_char;
+      }
+      else {
+	return RTEMS_INVALID_NUMBER;
+      }
+    }
+    else {
+      /*
+       * reversed data (MSB first): only 8/16/32 bits valid,
+       * always in lowest bits of data register
+       */
+      if (bits_per_char == 8) {
+	tmpmode = MPC83XX_SPIMODE_LEN(8-1);
+	softc_ptr->bytes_per_char = 1;
+	softc_ptr->bit_shift      = 0;
+      }
+      else if (bits_per_char == 16) {
+	tmpmode = MPC83XX_SPIMODE_LEN(16-1);
+	softc_ptr->bytes_per_char = 2;
+	softc_ptr->bit_shift      = 0;
+      }
+      else {
+	return RTEMS_INVALID_NUMBER;
+      }
+    }
+  }
+
+  *spimode = tmpmode;
+  return 0;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static int mpc83xx_spi_wait
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   wait for spi to become idle                                             |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ mpc83xx_spi_softc_t *softc_ptr,          /* handle              */
+ uint32_t             irq_mask,           /* irq mask to use     */
+ uint32_t             desired_status,     /* desired status word */
+ uint32_t             status_mask         /* status word mask    */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+  uint32_t act_status;
+  rtems_status_code rc;
+  uint32_t tout;
+
+#if defined(DEBUG)
+  printk("mpc83xx_spi_wait called... ");
+#endif
+  if (softc_ptr->initialized) {
+    /*
+     * allow interrupts, when receiver is not empty
+     */
+    softc_ptr->reg_ptr->spim = irq_mask;
+    rc = rtems_semaphore_obtain(softc_ptr->irq_sema_id,RTEMS_WAIT,100);
+    if (rc != RTEMS_SUCCESSFUL) {
+      return rc;
+    }
+  }
+  else {
+    tout = 0;
+    do {
+      if (tout++ > 1000000) {
+#if defined(DEBUG)
+	printk("... exit with RTEMS_TIMEOUT\r\n");
+#endif
+	return RTEMS_TIMEOUT;
+      }
+      /*
+       * wait for SPI to terminate
+       */
+    } while (!(softc_ptr->reg_ptr->spie & MPC83XX_SPIE_NE));
+  }
+
+  act_status = softc_ptr->reg_ptr->spie;
+  if ((act_status  & status_mask)!= desired_status) {
+#if defined(DEBUG)
+    printk("... exit with RTEMS_IO_ERROR,"
+	   "act_status=0x%04x,mask=0x%04x,desired_status=0x%04x\r\n",
+	   act_status,status_mask,desired_status);
+#endif
+    return RTEMS_IO_ERROR;
+  }
+#if defined(DEBUG)
+	printk("... exit OK\r\n");
+#endif
+  return RTEMS_SUCCESSFUL;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static void mpc83xx_spi_irq_handler
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   handle interrupts                                                       |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_irq_hdl_param handle     /* handle, is softc_ptr structure          */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    <none>                                                                 |
+\*=========================================================================*/
+{
+  mpc83xx_spi_softc_t *softc_ptr = (mpc83xx_spi_softc_t *)handle;
+
+  /*
+   * disable interrupt mask
+   */
+  softc_ptr->reg_ptr->spim = 0;
+  if (softc_ptr->initialized) {
+    rtems_semaphore_release(softc_ptr->irq_sema_id);
+  }
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static void mpc83xx_spi_irq_on_off
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   enable/disable interrupts (void, handled at different position)         |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ const
+ rtems_irq_connect_data *irq_conn_data   /* irq connect data                */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    <none>                                                                 |
+\*=========================================================================*/
+{
+}
+
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static int mpc83xx_spi_irq_isOn
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   check state of interrupts, void, done differently                       |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ const
+ rtems_irq_connect_data *irq_conn_data  /* irq connect data                */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    TRUE, if enabled                                                       |
+\*=========================================================================*/
+{
+  return (TRUE);
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static void mpc83xx_spi_install_irq_handler
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   (un-)install the interrupt handler                                      |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ mpc83xx_spi_softc_t *softc_ptr,        /* ptr to control structure        */
+ int install                            /* TRUE: install, FALSE: remove    */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    <none>                                                                 |
+\*=========================================================================*/
+{
+  rtems_status_code rc = RTEMS_SUCCESSFUL;
+
+  rtems_irq_connect_data irq_conn_data = {
+    softc_ptr->irq_number,
+    mpc83xx_spi_irq_handler,        /* rtems_irq_hdl           */
+    (rtems_irq_hdl_param)softc_ptr, /* (rtems_irq_hdl_param)   */
+    mpc83xx_spi_irq_on_off,         /* (rtems_irq_enable)      */
+    mpc83xx_spi_irq_on_off,         /* (rtems_irq_disable)     */
+    mpc83xx_spi_irq_isOn            /* (rtems_irq_is_enabled)  */
+  };
+
+  /*
+   * (un-)install handler for SPI device
+   */
+  if (install) {
+    /*
+     * create semaphore for IRQ synchronization
+     */
+    rc = rtems_semaphore_create(rtems_build_name('s','p','i','s'),
+				0,
+				RTEMS_FIFO
+				| RTEMS_SIMPLE_BINARY_SEMAPHORE,
+				0,
+				&softc_ptr->irq_sema_id);
+    if (rc != RTEMS_SUCCESSFUL) {
+      rtems_panic("SPI: cannot create semaphore");
+    }
+    if (!BSP_install_rtems_irq_handler (&irq_conn_data)) {
+      rtems_panic("SPI: cannot install IRQ handler");
+    }
+  }
+  else {
+    if (!BSP_remove_rtems_irq_handler (&irq_conn_data)) {
+      rtems_panic("SPI: cannot uninstall IRQ handler");
+    }
+    /*
+     * delete sync semaphore
+     */
+    if (softc_ptr->irq_sema_id != 0) {
+      rc = rtems_semaphore_delete(softc_ptr->irq_sema_id);
+      if (rc != RTEMS_SUCCESSFUL) {
+	rtems_panic("SPI: cannot delete semaphore");
+      }
+    }
+  }
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+rtems_status_code mpc83xx_spi_init
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   initialize the driver                                                   |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh                  /* bus specifier structure        */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+  mpc83xx_spi_softc_t *softc_ptr = &(((mpc83xx_spi_desc_t *)(bh))->softc);
+#if defined(DEBUG)
+  printk("mpc83xx_spi_init called... ");
+#endif
+  /*
+   * init HW registers:
+   */
+  /*
+   * FIXME: set default mode in SPIM
+   */
+
+  /*
+   * init interrupt stuff
+   */
+  mpc83xx_spi_install_irq_handler(softc_ptr,TRUE);
+
+  /*
+   * mark, that we have initialized
+   */
+  softc_ptr->initialized = TRUE;
+#if defined(DEBUG)
+  printk("... exit OK\r\n");
+#endif
+  return RTEMS_SUCCESSFUL;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+int mpc83xx_spi_read_write_bytes
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   transmit/receive some bytes from SPI device                             |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh,                 /* bus specifier structure        */
+ unsigned char *rbuf,                    /* buffer to store bytes          */
+ const unsigned char *tbuf,              /* buffer to send  bytes          */
+ int len                                 /* number of bytes to transceive  */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    number of bytes received or (negative) error code                      |
+\*=========================================================================*/
+{
+  mpc83xx_spi_softc_t *softc_ptr = &(((mpc83xx_spi_desc_t *)(bh))->softc);
+  rtems_status_code rc;
+  int bc = 0;
+  int bytes_per_char = softc_ptr->bytes_per_char;
+  int bit_shift      = softc_ptr->bit_shift;
+  uint32_t spird_val;
+
+#if defined(DEBUG)
+  printk("mpc83xx_spi_read_write_bytes called... ");
+#endif
+
+  while (len > bytes_per_char-1) {
+    len -= bytes_per_char;
+    /*
+     * mark last byte in SPCOM
+     */
+#if defined(USE_LAST_BIT)
+    softc_ptr->reg_ptr->spcom = (len < bytes_per_char) ? MPC83XX_SPCOM_LST : 0;
+#else
+    softc_ptr->reg_ptr->spcom = 0;
+#endif
+    if (tbuf == NULL) {
+      /*
+       * perform idle char write to read byte
+       */
+      softc_ptr->reg_ptr->spitd = softc_ptr->idle_char << bit_shift;
+    }
+    else {
+      switch(bytes_per_char) {
+      case 1:
+	softc_ptr->reg_ptr->spitd = (*(uint8_t *)tbuf) << bit_shift;
+	break;
+      case 2:
+	softc_ptr->reg_ptr->spitd = (*(uint16_t *)tbuf) << bit_shift;
+	break;
+      case 4:
+	softc_ptr->reg_ptr->spitd = (*(uint32_t *)tbuf) << bit_shift;
+	break;
+      }
+      tbuf += softc_ptr->bytes_per_char;
+    }
+    /*
+     * wait 'til end of transfer
+     */
+#if defined(USE_LAST_BIT)
+    rc = mpc83xx_spi_wait(softc_ptr,
+			  ((len == 0)
+			   ? MPC83XX_SPIE_LT
+			   : MPC83XX_SPIE_NE),
+			  ((len == 0)
+			   ? MPC83XX_SPIE_LT
+			   : MPC83XX_SPIE_NF)
+			  | MPC83XX_SPIE_NE,
+			  MPC83XX_SPIE_LT
+			    | MPC83XX_SPIE_OV
+			  | MPC83XX_SPIE_UN
+			  | MPC83XX_SPIE_NE
+			  | MPC83XX_SPIE_NF);
+    if (len == 0) {
+      /*
+       * clear the "last transfer complete" event
+       */
+      softc_ptr->reg_ptr->spie = MPC83XX_SPIE_LT;
+    }
+#else
+    rc = mpc83xx_spi_wait(softc_ptr,
+			  MPC83XX_SPIE_NE,
+			  MPC83XX_SPIE_NF
+			  | MPC83XX_SPIE_NE,
+			  MPC83XX_SPIE_OV
+			  | MPC83XX_SPIE_UN
+			  | MPC83XX_SPIE_NE
+			  | MPC83XX_SPIE_NF);
+#endif
+    if (rc != RTEMS_SUCCESSFUL) {
+#if defined(DEBUG)
+      printk("... exit rc=%d\r\n",-rc);
+#endif
+      return -rc;
+    }
+    spird_val = softc_ptr->reg_ptr->spird;
+    if (rbuf != NULL) {
+      switch(bytes_per_char) {
+      case 1:
+	 (*(uint8_t  *)rbuf) = spird_val >> bit_shift;
+	break;
+      case 2:
+	 (*(uint16_t *)rbuf) = spird_val >> bit_shift;
+	break;
+      case 4:
+	 (*(uint32_t *)rbuf) = spird_val >> bit_shift;
+	break;
+      }
+      rbuf += bytes_per_char;
+    }
+    bc += bytes_per_char;
+  }
+#if defined(DEBUG)
+  printk("... exit OK, rc=%d\r\n",bc);
+#endif
+  return bc;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+int mpc83xx_spi_read_bytes
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   receive some bytes from SPI device                                      |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh,                 /* bus specifier structure        */
+ unsigned char *buf,                     /* buffer to store bytes          */
+ int len                                 /* number of bytes to receive     */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    number of bytes received or (negative) error code                      |
+\*=========================================================================*/
+{
+  return mpc83xx_spi_read_write_bytes(bh,buf,NULL,len);
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+int mpc83xx_spi_write_bytes
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   send some bytes to SPI device                                           |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh,                 /* bus specifier structure        */
+ unsigned char *buf,                     /* buffer to send                 */
+ int len                                 /* number of bytes to send        */
+
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    number of bytes sent or (negative) error code                          |
+\*=========================================================================*/
+{
+  return mpc83xx_spi_read_write_bytes(bh,NULL,buf,len);
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+rtems_status_code mpc83xx_spi_set_tfr_mode
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   set SPI to desired baudrate/clock mode/character mode                   |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh,                 /* bus specifier structure        */
+ const rtems_libi2c_tfr_mode_t *tfr_mode /* transfer mode info             */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    rtems_status_code                                                      |
+\*=========================================================================*/
+{
+  mpc83xx_spi_softc_t *softc_ptr = &(((mpc83xx_spi_desc_t *)(bh))->softc);
+  uint32_t spimode_baud,spimode;
+  rtems_status_code rc = RTEMS_SUCCESSFUL;
+
+  /* Set idle character */
+  softc_ptr->idle_char = tfr_mode->idle_char;
+
+  /*
+   * FIXME: set proper mode
+   */
+  if (rc == RTEMS_SUCCESSFUL) {
+    rc = mpc83xx_spi_baud_to_mode(tfr_mode->baudrate,
+				  softc_ptr->base_frq,
+				  &spimode_baud);
+  }
+  if (rc == RTEMS_SUCCESSFUL) {
+    rc = mpc83xx_spi_char_mode(softc_ptr,
+			       tfr_mode->bits_per_char,
+			       tfr_mode->lsb_first,
+			       &spimode);
+  }
+  if (rc == RTEMS_SUCCESSFUL) {
+    spimode |= spimode_baud;
+    spimode |= MPC83XX_SPIMODE_M_S; /* set master mode */
+    if (!tfr_mode->lsb_first) {
+      spimode |= MPC83XX_SPIMODE_REV;
+    }
+    if (tfr_mode->clock_inv) {
+      spimode |= MPC83XX_SPIMODE_CI;
+    }
+    if (tfr_mode->clock_phs) {
+      spimode |= MPC83XX_SPIMODE_CP;
+    }
+  }
+
+  if (rc == RTEMS_SUCCESSFUL) {
+    /*
+     * disable SPI
+     */
+    softc_ptr->reg_ptr->spmode &= ~MPC83XX_SPIMODE_EN;
+    /*
+     * set new mode and reenable SPI
+     */
+    softc_ptr->reg_ptr->spmode = spimode | MPC83XX_SPIMODE_EN;
+  }
+  return rc;
+}
+
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+int mpc83xx_spi_ioctl
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   perform selected ioctl function for SPI                                 |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh,                 /* bus specifier structure        */
+ int                 cmd,                /* ioctl command code             */
+ void               *arg                 /* additional argument array      */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    rtems_status_code                                                      |
+\*=========================================================================*/
+{
+  int ret_val = -1;
+
+  switch(cmd) {
+  case RTEMS_LIBI2C_IOCTL_SET_TFRMODE:
+    ret_val =
+      -mpc83xx_spi_set_tfr_mode(bh,
+				(const rtems_libi2c_tfr_mode_t *)arg);
+    break;
+  case RTEMS_LIBI2C_IOCTL_READ_WRITE:
+    ret_val =
+      mpc83xx_spi_read_write_bytes(bh,
+				   ((rtems_libi2c_read_write_t *)arg)->rd_buf,
+				   ((rtems_libi2c_read_write_t *)arg)->wr_buf,
+				   ((rtems_libi2c_read_write_t *)arg)->byte_cnt);
+    break;
+  default:
+    ret_val = -RTEMS_NOT_DEFINED;
+    break;
+  }
+  return ret_val;
+}
+
+
+