//==========================================================================
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//==========================================================================
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//
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//
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// at91_flash.c
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// at91_flash.c
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//
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//
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// Flash programming
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// Flash programming
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//
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//
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//==========================================================================
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//==========================================================================
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//####ECOSGPLCOPYRIGHTBEGIN####
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//####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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//
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later version.
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// Software Foundation; either version 2 or (at your option) any later version.
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//
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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// for more details.
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//
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//
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// You should have received a copy of the GNU General Public License along
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// You should have received a copy of the GNU General Public License along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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//
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// As a special exception, if other files instantiate templates or use macros
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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// in accordance with section (3) of the GNU General Public License.
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//
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//
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// This exception does not invalidate any other reasons why a work based on
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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// this file might be covered by the GNU General Public License.
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//
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-license/
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// at http://sources.redhat.com/ecos/ecos-license/
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// -------------------------------------------
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
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//####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//#####DESCRIPTIONBEGIN####
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//
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//
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// Author(s): gthomas
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// Author(s): gthomas
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// Contributors: gthomas
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// Contributors: gthomas
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// Date: 2001-07-17
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// Date: 2001-07-17
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// Purpose:
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// Purpose:
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// Description:
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// Description:
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//
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//
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//####DESCRIPTIONEND####
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//####DESCRIPTIONEND####
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//
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//
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//==========================================================================
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//==========================================================================
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#include <pkgconf/hal.h>
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#include <pkgconf/hal.h>
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#include <cyg/hal/hal_arch.h>
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#include <cyg/hal/hal_arch.h>
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#include <cyg/hal/hal_cache.h>
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#include <cyg/hal/hal_cache.h>
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#include <cyg/hal/hal_io.h>
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#include <cyg/hal/hal_io.h>
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#define _FLASH_PRIVATE_
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#define _FLASH_PRIVATE_
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#include <cyg/io/flash.h>
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#include <cyg/io/flash.h>
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#include "flash.h"
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#include "flash.h"
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#define _si(p) ((p[0]<<8)|p[1])
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#define _si(p) ((p[0]<<8)|p[1])
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int
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int
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flash_hwr_init(void)
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flash_hwr_init(void)
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{
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{
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unsigned short data[4];
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unsigned short data[4];
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extern char flash_query, flash_query_end;
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extern char flash_query, flash_query_end;
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typedef int code_fun(unsigned char *);
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typedef int code_fun(unsigned char *);
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code_fun *_flash_query;
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code_fun *_flash_query;
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int code_len, stat, num_regions, region_size;
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int code_len, stat, num_regions, region_size;
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// Copy 'program' code to RAM for execution
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// Copy 'program' code to RAM for execution
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code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
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code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
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_flash_query = (code_fun *)flash_info.work_space;
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_flash_query = (code_fun *)flash_info.work_space;
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memcpy(_flash_query, &flash_query, code_len);
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memcpy(_flash_query, &flash_query, code_len);
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HAL_DCACHE_SYNC(); // Should guarantee this code will run
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HAL_DCACHE_SYNC(); // Should guarantee this code will run
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stat = (*_flash_query)(data);
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stat = (*_flash_query)(data);
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#if 0
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#if 0
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(*flash_info.pf)("stat = %x\n", stat);
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(*flash_info.pf)("stat = %x\n", stat);
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dump_buf(data, sizeof(data));
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dump_buf(data, sizeof(data));
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#endif
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#endif
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if (data[0] != FLASH_Atmel_code) {
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if (data[0] != FLASH_Atmel_code) {
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(*flash_info.pf)("Not Atmel = %x\n", data[0]);
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(*flash_info.pf)("Not Atmel = %x\n", data[0]);
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return FLASH_ERR_HWR;
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return FLASH_ERR_HWR;
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}
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}
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if (data[1] == (unsigned short)FLASH_ATMEL_29LV1024) {
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if (data[1] == (unsigned short)FLASH_ATMEL_29LV1024) {
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num_regions = 256;
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num_regions = 256;
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region_size = 0x100;
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region_size = 0x100;
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} else {
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} else {
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(*flash_info.pf)("Unknown device type: %x\n", data[1]);
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(*flash_info.pf)("Unknown device type: %x\n", data[1]);
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return FLASH_ERR_HWR;
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return FLASH_ERR_HWR;
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}
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}
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// Hard wired for now
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// Hard wired for now
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flash_info.block_size = region_size;
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flash_info.block_size = region_size;
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flash_info.blocks = num_regions;
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flash_info.blocks = num_regions;
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flash_info.start = (void *)0x01010000;
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flash_info.start = (void *)0x01010000;
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flash_info.end = (void *)(0x01010000+(num_regions*region_size));
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flash_info.end = (void *)(0x01010000+(num_regions*region_size));
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return FLASH_ERR_OK;
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return FLASH_ERR_OK;
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}
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}
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// Map a hardware status to a package error
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// Map a hardware status to a package error
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int
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int
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flash_hwr_map_error(int err)
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flash_hwr_map_error(int err)
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{
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{
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if (err) {
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if (err) {
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(*flash_info.pf)("Err = %x\n", err);
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(*flash_info.pf)("Err = %x\n", err);
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return FLASH_ERR_PROGRAM;
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return FLASH_ERR_PROGRAM;
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} else {
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} else {
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return FLASH_ERR_OK;
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return FLASH_ERR_OK;
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}
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}
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}
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}
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// See if a range of FLASH addresses overlaps currently running code
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// See if a range of FLASH addresses overlaps currently running code
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bool
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bool
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flash_code_overlaps(void *start, void *end)
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flash_code_overlaps(void *start, void *end)
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{
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{
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extern char _stext[], _etext[];
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extern char _stext[], _etext[];
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return ((((unsigned long)&_stext >= (unsigned long)start) &&
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return ((((unsigned long)&_stext >= (unsigned long)start) &&
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((unsigned long)&_stext < (unsigned long)end)) ||
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((unsigned long)&_stext < (unsigned long)end)) ||
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(((unsigned long)&_etext >= (unsigned long)start) &&
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(((unsigned long)&_etext >= (unsigned long)start) &&
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((unsigned long)&_etext < (unsigned long)end)));
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((unsigned long)&_etext < (unsigned long)end)));
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}
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}
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