1 //==========================================================================
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
43 // Author(s): andrew.lunn@ascom.ch
44 // Contributors: jlarmour
49 //####DESCRIPTIONEND####
51 //==========================================================================
53 #include <pkgconf/devs_flash_synth.h>
55 #include <cyg/hal/hal_io.h>
56 #include <cyg/infra/cyg_ass.h>
60 #define _FLASH_PRIVATE_
61 #include <cyg/io/flash.h>
65 /* Holds the fd for the flash file */
66 int cyg_dev_flash_synth_flashfd;
68 /* Holds the base address of the mmap'd region */
69 flash_t *cyg_dev_flash_synth_base;
74 flash_info.block_size = CYGNUM_FLASH_SYNTH_BLOCKSIZE;
75 flash_info.buffer_size = 0;
76 flash_info.blocks = CYGNUM_FLASH_SYNTH_NUMBLOCKS;
78 cyg_dev_flash_synth_flashfd = cyg_hal_sys_open(CYGDAT_FLASH_SYNTH_FILENAME,
80 CYG_HAL_SYS_S_IRWXU|CYG_HAL_SYS_S_IRWXG|CYG_HAL_SYS_S_IRWXO);
81 if (cyg_dev_flash_synth_flashfd == -ENOENT) {
85 cyg_dev_flash_synth_flashfd = cyg_hal_sys_open(
86 CYGDAT_FLASH_SYNTH_FILENAME,
87 CYG_HAL_SYS_O_RDWR|CYG_HAL_SYS_O_CREAT,
88 CYG_HAL_SYS_S_IRWXU|CYG_HAL_SYS_S_IRWXG|CYG_HAL_SYS_S_IRWXO);
89 CYG_ASSERT( cyg_dev_flash_synth_flashfd >= 0,
90 "Opening of the file for the synth flash failed!");
92 memset( buf, 0xff, sizeof(buf) );
93 bytesleft = CYGNUM_FLASH_SYNTH_BLOCKSIZE * CYGNUM_FLASH_SYNTH_NUMBLOCKS;
97 bytesneeded = bytesleft < sizeof(buf) ? bytesleft : sizeof(buf);
99 w = cyg_hal_sys_write( cyg_dev_flash_synth_flashfd, buf,
101 CYG_ASSERT(w == bytesneeded, "initialization of flash file failed");
102 bytesleft -= bytesneeded;
105 CYG_ASSERT( cyg_dev_flash_synth_flashfd >= 0,
106 "Opening of the file for the synth flash failed!");
107 if ( cyg_dev_flash_synth_flashfd <= 0 ) {
108 return FLASH_ERR_HWR;
110 cyg_dev_flash_synth_base = (flash_t *)cyg_hal_sys_mmap(
111 #ifdef CYGMEM_FLASH_SYNTH_BASE
112 (void *)CYGMEM_FLASH_SYNTH_BASE,
116 (CYGNUM_FLASH_SYNTH_BLOCKSIZE * CYGNUM_FLASH_SYNTH_NUMBLOCKS),
117 CYG_HAL_SYS_PROT_READ,
118 #ifdef CYGSEM_FLASH_SYNTH_FILE_WRITEBACK
119 CYG_HAL_SYS_MAP_SHARED
121 CYG_HAL_SYS_MAP_PRIVATE
123 #ifdef CYGMEM_FLASH_SYNTH_BASE
124 |CYG_HAL_SYS_MAP_FIXED
126 , cyg_dev_flash_synth_flashfd, 0 );
127 CYG_ASSERT( cyg_dev_flash_synth_base > 0, "mmap of flash file failed!" );
129 if (cyg_dev_flash_synth_base <= 0) {
130 return FLASH_ERR_HWR;
132 flash_info.start = cyg_dev_flash_synth_base;
133 flash_info.end = (void *)(((char *)cyg_dev_flash_synth_base) +
134 (CYGNUM_FLASH_SYNTH_BLOCKSIZE * CYGNUM_FLASH_SYNTH_NUMBLOCKS));
139 // Map a hardware status to a package error
141 flash_hwr_map_error(int err)
146 // See if a range of FLASH addresses overlaps currently running code
148 flash_code_overlaps(void *start, void *end)
150 extern char _stext[], _etext[];
152 return ((((unsigned long)&_stext >= (unsigned long)start) &&
153 ((unsigned long)&_stext < (unsigned long)end)) ||
154 (((unsigned long)&_etext >= (unsigned long)start) &&
155 ((unsigned long)&_etext < (unsigned long)end)));