Mercurial > ecos
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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new file mode 100644 --- /dev/null +++ b/packages/devs/flash/synth/current/src/synth.c @@ -0,0 +1,130 @@ +//========================================================================== +// +// 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
