new file mode 100644
--- /dev/null
+++ b/packages/hal/sh/cq7750/current/src/hal_diag.c
@@ -0,0 +1,218 @@
+//=============================================================================
+//
+//      hal_diag.c
+//
+//      HAL diagnostic output code
+//
+//=============================================================================
+//####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):    nickg, jskov
+// Contributors: nickg, jskov
+// Date:         1999-03-23
+// Purpose:      HAL diagnostic output
+// Description:  Implementations of HAL diagnostic output support.
+//
+//####DESCRIPTIONEND####
+//
+//=============================================================================
+
+#include <pkgconf/hal.h>
+
+#include <cyg/hal/hal_diag.h>           // our header.
+
+#include <cyg/infra/cyg_type.h>         // base types, externC
+#include <cyg/hal/hal_io.h>             // IO macros
+#include <cyg/hal/hal_if.h>             // calling interface API
+#include <cyg/hal/hal_intr.h>           // Interrupt macros
+#include <cyg/hal/sh4_scif.h>            // driver API
+#include <cyg/hal/hal_misc.h>           // Helper functions
+
+#define SCI_BASE ((cyg_uint8*)0xffe80000)
+
+//-----------------------------------------------------------------------------
+
+#if defined(CYGSEM_HAL_VIRTUAL_VECTOR_DIAG) \
+    || defined(CYGPRI_HAL_IMPLEMENTS_IF_SERVICES)
+
+void
+cyg_hal_plf_comms_init(void)
+{
+    static int initialized = 0;
+
+    if (initialized)
+        return;
+
+    initialized = 1;
+
+    cyg_hal_plf_scif_init(0, 0, CYGNUM_HAL_INTERRUPT_SCIF_RXI, SCI_BASE);
+}
+
+#endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG || CYGPRI_HAL_IMPLEMENTS_IF_SERVICES
+
+//=============================================================================
+// Led control
+//=============================================================================
+#define LED   0xb4000000
+
+void
+hal_diag_led_on( void )
+{
+    HAL_WRITE_UINT8(LED, 0x18);
+}
+
+void
+hal_diag_led_off( void )
+{
+    HAL_WRITE_UINT8(LED, 0);
+}
+
+//=============================================================================
+// Compatibility with older stubs
+//=============================================================================
+
+#ifndef CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
+
+static channel_data_t channel = { (cyg_uint8*)SCI_BASE, 0, 0};
+
+#if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
+#include <cyg/hal/hal_stub.h>           // hal_output_gdb_string
+#endif
+
+#if defined(CYGSEM_HAL_USE_ROM_MONITOR_GDB_stubs)
+
+#define CYG_HAL_DIAG_GDB
+
+#elif defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
+
+#define CYG_HAL_DIAG_GDB
+
+#endif
+
+//-----------------------------------------------------------------------------
+
+void hal_diag_init(void)
+{
+    cyg_hal_plf_scif_init_channel(&channel);
+}
+
+void 
+hal_diag_write_char_serial( char c )
+{
+    cyg_hal_plf_scif_putc(&channel, c);
+}
+
+void
+hal_diag_read_char(char *c)
+{
+    *c = (char) cyg_hal_plf_scif_getc(&channel);
+}
+
+// Packet function
+void 
+hal_diag_write_char(char c)
+{
+#ifdef CYG_HAL_DIAG_GDB
+    static char line[100];
+    static int pos = 0;
+
+    // No need to send CRs
+    if( c == '\r' ) return;
+
+    line[pos++] = c;
+
+    if( c == '\n' || pos == sizeof(line) )
+    {
+        CYG_INTERRUPT_STATE old;
+
+        // Disable interrupts. This prevents GDB trying to interrupt us
+        // while we are in the middle of sending a packet. The serial
+        // receive interrupt will be seen when we re-enable interrupts
+        // later.
+        
+#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
+        CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION(old);
+#else
+        HAL_DISABLE_INTERRUPTS(old);
+#endif
+        
+        while(1)
+        {
+            char c1;
+            static char hex[] = "0123456789ABCDEF";
+            cyg_uint8 csum = 0;
+            int i;
+        
+            cyg_hal_plf_scif_putc(&channel, '$');
+            cyg_hal_plf_scif_putc(&channel, 'O');
+            csum += 'O';
+            for( i = 0; i < pos; i++ )
+            {
+                char ch = line[i];
+                char h = hex[(ch>>4)&0xF];
+                char l = hex[ch&0xF];
+                cyg_hal_plf_scif_putc(&channel, h);
+                cyg_hal_plf_scif_putc(&channel, l);
+                csum += h;
+                csum += l;
+            }
+            cyg_hal_plf_scif_putc(&channel, '#');
+            cyg_hal_plf_scif_putc(&channel, hex[(csum>>4)&0xF]);
+            cyg_hal_plf_scif_putc(&channel, hex[csum&0xF]);
+
+            // Wait for the ACK character '+' from GDB here and handle
+            // receiving a ^C instead.
+            c1 = (char) cyg_hal_plf_scif_getc(&channel);
+
+            if( c1 == '+' )
+                break;              // a good acknowledge
+
+            // Check for user break.
+            if( cyg_hal_is_break( &c1, 1 ) )
+                cyg_hal_user_break( NULL );
+
+            // otherwise, loop round again
+        }
+        
+        pos = 0;
+
+        // And re-enable interrupts
+#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
+        CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION(old);
+#else
+        HAL_RESTORE_INTERRUPTS(old);
+#endif
+    }
+#else // CYG_HAL_DIAG_GDB
+    cyg_hal_plf_scif_putc(&channel, c);
+#endif
+}
+
+#endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
+
+//-----------------------------------------------------------------------------
+// End of hal_diag.c