added missing file

2 files changed, 278 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/powerpc/gen83xx/ChangeLog b/c/src/lib/libbsp/powerpc/gen83xx/ChangeLog
index 46a0ed664b..35a77c9c94 100644
--- a/c/src/lib/libbsp/powerpc/gen83xx/ChangeLog
+++ b/c/src/lib/libbsp/powerpc/gen83xx/ChangeLog
@@ -1,3 +1,7 @@
+2007-12-04	Thomas Doerfler <Thomas.Doerfler@embedded-brains.de>
+
+	* spi/spi_init.c: added missing file
+
 2007-12-03	Joel Sherrill <joel.sherrill@OARcorp.com>
 
 	* Makefile.am, startup/bspstart.c: Moved most of the remaining CPU
diff --git a/c/src/lib/libbsp/powerpc/gen83xx/spi/spi_init.c b/c/src/lib/libbsp/powerpc/gen83xx/spi/spi_init.c
new file mode 100644
index 0000000000..f49ae95b6b
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/gen83xx/spi/spi_init.c
@@ -0,0 +1,274 @@
+/*===============================================================*\
+| 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.com/license/LICENSE.                           |
+|                                                                 |
++-----------------------------------------------------------------+
+| this file contains the low level MPC83xx SPI driver parameters  |
+| and board-specific functions                                    |
+\*===============================================================*/
+#include <mpc83xx/mpc83xx_spidrv.h>
+#include <bsp/irq.h>
+#include <bsp.h>
+#if defined(MPC8349EAMDS)
+#include <libchip/i2c-2b-eeprom.h>
+#include <libchip/spi-flash-m25p40.h>
+#endif
+
+/*=========================================================================*\
+| Board-specific adaptation functions                                       |
+\*=========================================================================*/
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static rtems_status_code bsp_spi_sel_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                                                   |
+\*=========================================================================*/
+{
+#if defined(MPC8349EAMDS)
+  /*
+   * check device address for valid range
+   */
+  if (addr > 0) {
+    return RTEMS_INVALID_NUMBER;
+  }
+  /*
+   * select given device
+   * GPIO1[0] is nSEL_SPI for M25P40
+   * set it to be active/low
+   */
+  mpc83xx.gpio[0].gpdat &= ~(1 << (31- 0));
+#endif
+#if defined(HSC_CM01)
+  /*
+   * check device address for valid range
+   */
+  if (addr > 7) {
+    return RTEMS_INVALID_NUMBER;
+  }
+  /*
+   * select given device
+   */
+  /*
+   * GPIO1[24] is SPI_A0
+   * GPIO1[25] is SPI_A1
+   * GPIO1[26] is SPI_A2
+   * set pins to address 
+   */
+  mpc83xx.gpio[0].gpdat = 
+    (mpc83xx.gpio[0].gpdat & ~(0x7  << (31-26)))
+    |                         (addr << (31-26));
+  /*
+   * GPIO1[27] is high-active strobe 
+   */
+  mpc83xx.gpio[0].gpdat |= (1 << (31- 27));
+#endif
+  return  RTEMS_SUCCESSFUL;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static rtems_status_code bsp_spi_send_start_dummy
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   dummy function, SPI has no start condition                              |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh                  /* bus specifier structure        */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+#if defined(MPC8349EAMDS)
+  /*
+   * GPIO1[0] is nSEL_SPI for M25P40
+   * set it to inactive/high
+   */
+  mpc83xx.gpio[0].gpdat |=  (1 << (31- 0));
+#endif
+#if defined(HSC_CM01)
+  /*
+   * GPIO1[27] is high-active strobe 
+   * set it to inactive/ low
+   */
+  mpc83xx.gpio[0].gpdat &= ~(0x1 << (31-27));
+#endif
+  return 0;
+}
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+static rtems_status_code bsp_spi_send_stop
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   deselect SPI                                                            |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ rtems_libi2c_bus_t *bh                  /* bus specifier structure        */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    o = ok or error code                                                   |
+\*=========================================================================*/
+{
+#if defined(DEBUG)
+  printk("bsp_spi_send_stop called... ");
+#endif
+#if defined(MPC8349EAMDS)
+  /*
+   * deselect given device
+   * GPIO1[0] is nSEL_SPI for M25P40
+   * set it to be inactive/high
+   */
+  mpc83xx.gpio[0].gpdat |=  (1 << (31- 0));
+#endif
+#if defined(HSC_CM01)
+  /*
+   * deselect device
+   * GPIO1[27] is high-active strobe 
+   */
+  mpc83xx.gpio[0].gpdat &= ~(1 << (31- 27));
+#endif
+#if defined(DEBUG)
+  printk("... exit OK\r\n");
+#endif
+  return 0;
+}
+
+/*=========================================================================*\
+| list of handlers                                                          |
+\*=========================================================================*/
+
+rtems_libi2c_bus_ops_t bsp_spi_ops = {
+  init:             mpc83xx_spi_init,
+  send_start:       bsp_spi_send_start_dummy,
+  send_stop:        bsp_spi_send_stop,
+  send_addr:        bsp_spi_sel_addr,
+  read_bytes:       mpc83xx_spi_read_bytes,
+  write_bytes:      mpc83xx_spi_write_bytes,
+  ioctl:            mpc83xx_spi_ioctl
+};
+
+static mpc83xx_spi_desc_t bsp_spi_bus_desc = {
+  {/* public fields */
+    ops:	&bsp_spi_ops,
+    size:	sizeof(bsp_spi_bus_desc),
+  },
+  { /* our private fields */
+    reg_ptr:	 &mpc83xx.spi,
+    initialized: FALSE,
+    irq_number:  BSP_IPIC_IRQ_SPI
+  }
+};
+
+/*=========================================================================*\
+| initialization                                                            |
+\*=========================================================================*/
+
+/*=========================================================================*\
+| Function:                                                                 |
+\*-------------------------------------------------------------------------*/
+rtems_status_code bsp_register_spi
+(
+/*-------------------------------------------------------------------------*\
+| Purpose:                                                                  |
+|   register SPI bus and devices                                            |
++---------------------------------------------------------------------------+
+| Input Parameters:                                                         |
+\*-------------------------------------------------------------------------*/
+ void                                    /* <none>                         */
+)
+/*-------------------------------------------------------------------------*\
+| Return Value:                                                             |
+|    0 or error code                                                        |
+\*=========================================================================*/
+{
+  int ret_code;
+  int spi_busno;
+
+  /*
+   * init I2C library (if not already done)
+   */
+  rtems_libi2c_initialize ();
+
+  /*
+   * init port pins used to address/select SPI devices
+   */
+#if defined(MPC8349EAMDS)
+  /*
+   * GPIO1[0] is nSEL_SPI for M25P40
+   * set it to be output, high
+   */
+  mpc83xx.gpio[0].gpdat |=  (1 << (31- 0));
+  mpc83xx.gpio[0].gpdir |=  (1 << (31- 0));
+  mpc83xx.gpio[0].gpdr  &= ~(1 << (31- 0));
+#endif
+#if defined(HSC_CM01)
+  /*
+   * GPIO1[24] is SPI_A0
+   * GPIO1[25] is SPI_A1
+   * GPIO1[26] is SPI_A2
+   * GPIO1[27] is high-active strobe 
+   * set pins to be output, low
+   */
+  mpc83xx.gpio[0].gpdat &= ~(0xf << (31-27));
+  mpc83xx.gpio[0].gpdir |=  (0xf << (31-27));
+  mpc83xx.gpio[0].gpdr  &= ~(0xf << (31-27));
+#endif
+  /*
+   * register SPI bus
+   */
+  ret_code = rtems_libi2c_register_bus("/dev/spi",
+				       &(bsp_spi_bus_desc.bus_desc));
+  if (ret_code < 0) {
+    return -ret_code;
+  }
+  spi_busno = ret_code;
+  /*
+   * register M25P40 Flash, when available
+   */
+#if defined(MPC8349EAMDS)
+  ret_code = rtems_libi2c_register_drv(RTEMS_BSP_SPI_FLASH_DEVICE_NAME,
+				       spi_flash_m25p40_rw_driver_descriptor,
+				       spi_busno,0x00);
+  if (ret_code < 0) {
+    return -ret_code;
+  }
+#endif
+  /*
+   * FIXME: further drivers, when available
+   */
+  return 0;
+}