diff packages/devs/flash/synth/current/src/synth.c @ 202:353a011b23b8

Merge from eCos master repository on 2002-01-11-06:43:03-GMT
author jlarmour
date Fri, 11 Jan 2002 16:53:46 +0000
parents
children e0c0827131d1
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--- /dev/null
+++ b/packages/devs/flash/synth/current/src/synth.c
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+//==========================================================================
+//
+//      synth.c
+//
+//      Flash programming
+//
+//==========================================================================
+//####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, 2001, 2002 Red Hat, Inc.
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):    andrew.lunn@ascom.ch
+// Contributors: jlarmour
+// Date:         2001-10-30
+// Purpose:      
+// Description:  
+//              
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+#include <pkgconf/devs_flash_synth.h>
+
+#include <cyg/hal/hal_io.h>
+#include <cyg/infra/cyg_ass.h>
+
+#define  _FLASH_PRIVATE_
+#include <cyg/io/flash.h>
+
+#include "synth.h"
+
+/* Holds the fd for the flash file */
+int cyg_dev_flash_synth_flashfd;
+
+/* Holds the base address of the mmap'd region */
+flash_t *cyg_dev_flash_synth_base;
+
+/* Helper function. The Linux system call cannot pass 6 parameters. Instead
+   a structure is filled in and passed as one parameter */
+static int 
+cyg_hal_sys_do_mmap(void *addr, unsigned long length, unsigned long prot, 
+                    unsigned long flags, unsigned long fd, unsigned long off)
+{
+
+    struct cyg_hal_sys_mmap_args args;
+  
+    args.addr = (unsigned long) addr;
+    args.len = length;
+    args.prot = prot = prot;
+    args.flags = flags;
+    args.fd = fd;
+    args.offset = off;
+
+    return (cyg_hal_sys_mmap(&args));
+}           
+
+int
+flash_hwr_init(void)
+{
+    flash_info.block_size = CYGNUM_FLASH_SYNTH_BLOCKSIZE;
+    flash_info.buffer_size = 0;
+    flash_info.blocks = CYGNUM_FLASH_SYNTH_NUMBLOCKS;
+
+    cyg_dev_flash_synth_flashfd = cyg_hal_sys_open(CYGDAT_FLASH_SYNTH_FILENAME, 
+                CYG_HAL_SYS_O_RDWR|CYG_HAL_SYS_O_CREAT, 
+                CYG_HAL_SYS_S_IRWXU|CYG_HAL_SYS_S_IRWXG|CYG_HAL_SYS_S_IRWXO);
+    CYG_ASSERT( cyg_dev_flash_synth_flashfd >= 0, 
+                "Opening of the file for the synth flash failed!");
+    if ( cyg_dev_flash_synth_flashfd <= 0 ) {
+        return FLASH_ERR_HWR;
+    }
+    cyg_dev_flash_synth_base = cyg_hal_sys_do_mmap( NULL,
+                (CYGNUM_FLASH_SYNTH_BLOCKSIZE * CYGNUM_FLASH_SYNTH_NUMBLOCKS),
+                CYG_HAL_SYS_PROT_READ, CYG_HAL_SYS_MAP_PRIVATE,
+                cyg_dev_flash_synth_flashfd,
+                0 );
+    CYG_ASSERT( cyg_dev_flash_synth_base > 0, "mmap of flash file failed!" );
+
+    if (cyg_dev_flash_synth_base <= 0) {
+        return FLASH_ERR_HWR;
+    }
+    flash_info.start = cyg_dev_flash_synth_base;
+    flash_info.end = (void *)(((char *)cyg_dev_flash_synth_base) +
+        (CYGNUM_FLASH_SYNTH_BLOCKSIZE * CYGNUM_FLASH_SYNTH_NUMBLOCKS));
+
+    return FLASH_ERR_OK;
+}
+
+// Map a hardware status to a package error
+int
+flash_hwr_map_error(int err)
+{
+    return err;
+}
+
+// See if a range of FLASH addresses overlaps currently running code
+bool
+flash_code_overlaps(void *start, void *end)
+{
+    extern char _stext[], _etext[];
+
+    return ((((unsigned long)&_stext >= (unsigned long)start) &&
+             ((unsigned long)&_stext < (unsigned long)end)) ||
+            (((unsigned long)&_etext >= (unsigned long)start) &&
+             ((unsigned long)&_etext < (unsigned long)end)));
+}
+
+// EOF synth.c