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Viewing changes to src/flash/ocl/at91sam7x/main.c

  • Committer: Bazaar Package Importer
  • Author(s): Uwe Hermann
  • Date: 2009-11-25 12:20:04 UTC
  • mfrom: (1.2.5 upstream)
  • Revision ID: james.westby@ubuntu.com-20091125122004-4cnrzqw7v9qu064n
Tags: 0.3.1-1
http://bugs.debian.org/554598
http://bugs.debian.org/537740
http://bugs.debian.org/555553
* New upstream release (Closes: #554598, #537740).
* Add sh4 (instead of sh) to the list of architectures (Closes: #555553).
* Standards-Version: 3.8.3 (no changes required).
* debian/watch: Add file.
* debian/docs: Updates, some files were removed, some added.

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src/flash/ocl/at91sam7x/main.c
1
 
/***************************************************************************
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 *   Copyright (C) 2007 by Pavel Chromy                                    *
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 *   chromy@asix.cz                                                        *
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 *                                                                         *
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 *   This program is free software; you can redistribute it and/or modify  *
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 *   it under the terms of the GNU General Public License as published by  *
7
 
 *   the Free Software Foundation; either version 2 of the License, or     *
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 *   (at your option) any later version.                                   *
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 *                                                                         *
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 *   This program is distributed in the hope that it will be useful,       *
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
12
 
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
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 *   GNU General Public License 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 this program; if not, write to the                         *
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 *   Free Software Foundation, Inc.,                                       *
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 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
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 ***************************************************************************/
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#include "platform.h"
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#include "ocl.h"
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#include "dcc.h"
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#include "samflash.h"
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#define BUFSIZE 1024 /* words, i.e. 4 KiB */
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uint32 buffer[1024];
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void cmd_flash(uint32 cmd)
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{
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        unsigned int len;
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        uint32 adr;
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        uint32 chksum;
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        unsigned int bi; /* buffer index */
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        unsigned int bi_start; /* receive start mark */
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        unsigned int bi_end; /* receive end mark */
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        unsigned int ofs;
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        int pagenum;
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        int result;
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        adr = dcc_rd();
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        len = cmd&0xffff;
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        ofs = adr%flash_page_size;
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        bi_start = ofs/4;
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        bi_end = (ofs + len + 3)/4;
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        if (bi_end > BUFSIZE) {
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                dcc_wr(OCL_BUFF_OVER);
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                return;
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        }
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        chksum = OCL_CHKS_INIT;
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        for (bi = 0; bi < bi_end; bi++) chksum^=buffer[bi]=dcc_rd();
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        if (dcc_rd() != chksum) {
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                dcc_wr(OCL_CHKS_FAIL);
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                return;
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        }
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        /* fill in unused positions with unprogrammed values */
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        for (bi = 0; bi < bi_start; bi++) buffer[bi]=0xffffffff;
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        for (bi = bi_end; bi%flash_page_size; bi++) buffer[bi]=0xffffffff;
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        result = 0;
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        pagenum = adr/flash_page_size;
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        for (bi = 0; bi < bi_end; bi += flash_page_size/4) {
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                result = flash_page_program(buffer + bi, pagenum++);
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                if (result) break;
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        }
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        /* verify written data */
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        if (!result) result = flash_verify(adr, len, ((uint8 *)buffer) + ofs);
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        dcc_wr(OCL_CMD_DONE | result);
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}
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int main (void)
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{
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        uint32 cmd;
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        for (;;) {
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                cmd = dcc_rd();
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                switch (cmd&OCL_CMD_MASK) {
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                        case OCL_PROBE:
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                                dcc_wr(OCL_CMD_DONE | flash_init());
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                                dcc_wr(0x100000); /* base */
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                                dcc_wr(flash_page_count*flash_page_size); /* size */
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                                dcc_wr(1); /* num_sectors */
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                                dcc_wr(4096 | ((unsigned long) flash_page_size << 16)); /* buflen and bufalign */
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                                break;
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                        case OCL_ERASE_ALL:
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                                dcc_wr(OCL_CMD_DONE | flash_erase_all());
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                                break;
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                        case OCL_FLASH_BLOCK:
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                                cmd_flash(cmd);
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                                break;
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                        default:
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                                /* unknown command */
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                                dcc_wr(OCL_CMD_ERR);
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                                break;
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                }
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        }
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        return(0); /* we shall never get here, just to supress compiler warning */
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}