diff packages/hal/arm/integrator/current/src/integrator_misc.c @ 195:67850532eebb

Merge from eCos master repository on 2001-11-02-06:43:03-GMT
author jlarmour
date Fri, 02 Nov 2001 16:12:33 +0000
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children e0c0827131d1
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+//==========================================================================
+//
+//      integrator_misc.c
+//
+//      HAL misc board support code for ARM INTEGRATOR7
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (the "License"); you may not use this file except in         
+// compliance with the License.  You may obtain a copy of the License at    
+// http://www.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):    David A Rusling
+// Contributors: Philippe Robin
+// Date:         November 7, 2000
+// Purpose:      HAL board support
+// Description:  Implementations of HAL board interfaces
+//
+//####DESCRIPTIONEND####
+//
+//===========================================================================*/
+
+#include <pkgconf/hal.h>
+
+#include <cyg/infra/cyg_type.h>         // base types
+#include <cyg/infra/cyg_trac.h>         // tracing macros
+#include <cyg/infra/cyg_ass.h>          // assertion macros
+
+#include <cyg/hal/hal_io.h>             // IO macros
+#include <cyg/hal/hal_arch.h>           // Register state info
+#include <cyg/hal/hal_diag.h>
+#include <cyg/hal/hal_intr.h>           // necessary?
+#include <cyg/hal/hal_integrator.h>
+
+/*------------------------------------------------------------------------*/
+// On-board timer
+/*------------------------------------------------------------------------*/
+
+// forward declarations
+void hal_if_init(void);
+
+// declarations
+static cyg_uint32 _period;
+
+void hal_clock_initialize(cyg_uint32 period)
+{
+    //diag_init();  diag_printf("%s(%d)\n", __PRETTY_FUNCTION__, period);
+    //diag_printf("psr = %x\n", psr());
+    HAL_WRITE_UINT32(CYG_DEVICE_TIMER_CONTROL, CTL_DISABLE);    // Turn off
+    HAL_WRITE_UINT32(CYG_DEVICE_TIMER_LOAD, period);
+    HAL_WRITE_UINT32(CYG_DEVICE_TIMER_CONTROL,
+		     CTL_ENABLE | CTL_PERIODIC | CTL_SCALE_16);
+    _period = period;
+}
+
+void hal_clock_reset(cyg_uint32 vector, cyg_uint32 period)
+{
+    //diag_init();  diag_printf("%s\n", __PRETTY_FUNCTION__);
+    HAL_WRITE_UINT32(CYG_DEVICE_TIMER_CLEAR, 0);
+    _period = period;
+}
+
+void hal_clock_read(cyg_uint32 *pvalue)
+{
+    cyg_uint32 value;
+//    diag_init();  diag_printf("%s\n", __PRETTY_FUNCTION__);
+    HAL_READ_UINT32(CYG_DEVICE_TIMER_CURRENT, value);
+    value &= 0xFFFF;
+    *pvalue = _period - (value & 0xFFFF);   // Note: counter is only 16 bits
+                                            //       and decreases
+}
+
+void hal_hardware_init(void)
+{
+    // Any hardware/platform initialization that needs to be done.
+
+    // Clear all interrupt sources
+    HAL_WRITE_UINT32(CYG_DEVICE_IRQ_EnableClear, 0xFFFF); 
+
+    // FIXME: The line with the thumb check is a hack, allowing
+    // the farm to run test. Problem is that virtual vector table
+    // API needs to be ARM/Thumb consistent. Will fix later.
+#ifndef __thumb__
+    // Set up eCos/ROM interfaces
+    hal_if_init();
+#endif
+}
+
+//
+// This routine is called to respond to a hardware interrupt (IRQ).  It
+// should interrogate the hardware and return the IRQ vector number.
+
+int hal_IRQ_handler(void)
+{
+    // Do hardware-level IRQ handling
+    int irq_status, vector;
+    HAL_READ_UINT32(CYG_DEVICE_IRQ_Status, irq_status);
+    //diag_init();  diag_printf("IRQ status: 0x%x\n", irq_status); 
+    for (vector = 1;  vector <= 16;  vector++) {
+        if (irq_status & (1<<vector)) return vector;
+    }
+    return -1 ; // This shouldn't happen!
+}
+
+//
+// Interrupt control
+//
+
+void hal_interrupt_mask(int vector)
+{
+    //diag_init();  diag_printf("hal_interrupt_mask(%d)\n", vector);
+    HAL_WRITE_UINT32(CYG_DEVICE_IRQ_EnableClear, 1<<vector);
+}
+
+#if 0
+void hal_interrupt_status(void)
+{
+    int irq_status, irq_enable, timer_status, timer_value, timer_load;
+    HAL_READ_UINT32(CYG_DEVICE_IRQ_Status, irq_status);
+    HAL_READ_UINT32(CYG_DEVICE_IRQ_Enable, irq_enable);
+    HAL_READ_UINT32(CYG_DEVICE_TIMER_LOAD, timer_load);
+    HAL_READ_UINT32(CYG_DEVICE_TIMER_CURRENT, timer_value);
+    HAL_READ_UINT32(CYG_DEVICE_TIMER_CONTROL, timer_status);    
+    diag_printf("Interrupt: IRQ: %x.%x, TIMER: %x.%x.%x, psr: %x\n",
+                irq_status, irq_enable, timer_status, timer_value,
+                timer_load, psr());
+}
+#endif
+
+void hal_interrupt_unmask(int vector)
+{
+    //diag_init();  diag_printf("hal_interrupt_unmask(%d)\n", vector);
+    HAL_WRITE_UINT32(CYG_DEVICE_IRQ_EnableSet, 1<<vector);
+}
+
+void hal_interrupt_acknowledge(int vector)
+{
+    //diag_init();  diag_printf("%s(%d)\n", __PRETTY_FUNCTION__, vector);
+}
+
+void hal_interrupt_configure(int vector, int level, int up)
+{
+    //diag_init();  diag_printf("%s(%d,%d,%d)\n", __PRETTY_FUNCTION__, vector, level, up);
+}
+
+void hal_interrupt_set_level(int vector, int level)
+{
+    //diag_init();  diag_printf("%s(%d,%d)\n", __PRETTY_FUNCTION__, vector, level);
+}
+
+void hal_show_IRQ(int vector, int data, int handler)
+{
+    //    diag_printf("IRQ - vector: %x, data: %x, handler: %x\n", vector, data, handler);
+}
+ 
+/*---------------------------------------------------------------------------*/
+/* End of hal_misc.c */