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skrzyp |
//==========================================================================
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//
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// atlas_flash.c
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//
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// Flash programming
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//
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//==========================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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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 Free Software Foundation, Inc.
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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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// 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
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY 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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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): gthomas
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// Contributors: gthomas, msalter
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// Date: 2000-12-06
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// Purpose:
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// Description:
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//
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//####DESCRIPTIONEND####
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//
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//==========================================================================
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#include <pkgconf/hal.h>
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#include <cyg/hal/hal_arch.h>
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#include <cyg/infra/diag.h>
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#include <cyg/io/flash.h>
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#include <cyg/io/flash_dev.h>
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#include "flash.h"
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#include <string.h>
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#define _si(p) ((p[1]<<8)|p[0])
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int
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flash_hwr_init(void)
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{
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struct FLASH_query data, *qp;
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int num_regions, region_size;
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flash_dev_query(&data);
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qp = &data;
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if (/*(qp->manuf_code == FLASH_Intel_code) && */
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(strncmp(qp->id, "QRY", 3) == 0)) {
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num_regions = _si(qp->num_regions)+1;
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region_size = _si(qp->region_size)*256;
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flash_info.block_size = region_size*2; // Pairs of chips in parallel
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flash_info.blocks = num_regions*2; // and pairs of chips in serial
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flash_info.start = (void *)0x9c000000;
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flash_info.end = (void *)0x9e000000;
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return FLASH_ERR_OK;
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} else {
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(*flash_info.pf)("Can't identify FLASH, sorry\n");
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diag_dump_buf((void*)&data, sizeof(data));
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return FLASH_ERR_HWR;
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}
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}
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// Map a hardware status to a package error
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int
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flash_hwr_map_error(int err)
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{
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if (err & 0x007E007E) {
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(*flash_info.pf)("Err = %x\n", err);
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if (err & 0x00100010) {
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return FLASH_ERR_PROGRAM;
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} else
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if (err & 0x00200020) {
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return FLASH_ERR_ERASE;
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} else
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return FLASH_ERR_HWR; // FIXME
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} else {
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return FLASH_ERR_OK;
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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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bool
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flash_code_overlaps(void *start, void *end)
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{
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extern char _stext[], _etext[];
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unsigned long p_stext, pstart, p_etext, pend;
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p_stext = CYGARC_PHYSICAL_ADDRESS((unsigned long)&_stext);
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p_etext = CYGARC_PHYSICAL_ADDRESS((unsigned long)&_etext);
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// if _stext/_etext in boot shadow region, convert to
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// system flash address
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if ((p_stext >= 0x1fc00000) && (p_etext <= 0x20000000)) {
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p_stext -= 0x02000000;
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p_etext -= 0x02000000;
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}
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pstart = CYGARC_PHYSICAL_ADDRESS((unsigned long)start);
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pend = CYGARC_PHYSICAL_ADDRESS((unsigned long)end);
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return (((p_stext >= pstart) && (p_stext < pend)) ||
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((p_etext >= pstart) && (p_etext < pend)));
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}
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