mirror of https://github.com/marqs85/ossc.git
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
//
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// Copyright (C) 2015-2016 Markus Hiienkari <mhiienka@niksula.hut.fi>
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//
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// This file is part of Open Source Scan Converter project.
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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
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// the Free Software Foundation, either version 3 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
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// 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, see <http://www.gnu.org/licenses/>.
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//
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#include <unistd.h>
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#include <string.h>
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#include "system.h"
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#include "flash.h"
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#include "utils.h"
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extern alt_epcq_controller_dev epcq_controller_0;
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alt_epcq_controller_dev *epcq_controller_dev;
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int check_flash()
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{
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epcq_controller_dev = &epcq_controller_0;
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if ((epcq_controller_dev == NULL) || !(epcq_controller_dev->is_epcs && (epcq_controller_dev->page_size == PAGESIZE)))
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return -FLASH_DETECT_ERROR;
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printf("Flash size in bytes: %lu\nSector size: %lu (%lu pages)\nPage size: %lu\n",
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epcq_controller_dev->size_in_bytes, epcq_controller_dev->sector_size, epcq_controller_dev->sector_size/epcq_controller_dev->page_size, epcq_controller_dev->page_size);
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return 0;
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}
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int read_flash(alt_u32 offset, alt_u32 length, alt_u8 *dstbuf)
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{
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int retval, i;
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retval = alt_epcq_controller_read(&epcq_controller_dev->dev, offset, dstbuf, length);
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if (retval != 0)
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return -FLASH_READ_ERROR;
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for (i=0; i<length; i++)
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dstbuf[i] = bitswap8(dstbuf[i]);
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return 0;
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}
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int write_flash_page(alt_u8 *pagedata, alt_u32 length, alt_u32 pagenum)
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{
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int retval, i;
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if ((pagenum % PAGES_PER_SECTOR) == 0) {
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printf("Erasing sector %u\n", (unsigned)(pagenum/PAGES_PER_SECTOR));
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retval = alt_epcq_controller_erase_block(&epcq_controller_dev->dev, pagenum*PAGESIZE);
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if (retval != 0) {
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printf("Flash erase error, sector %u\nRetval %d\n", (unsigned)(pagenum/PAGES_PER_SECTOR), retval);
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return -FLASH_ERASE_ERROR;
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}
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}
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// Bit-reverse bytes for flash
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for (i=0; i<length; i++)
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pagedata[i] = bitswap8(pagedata[i]);
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retval = alt_epcq_controller_write_block(&epcq_controller_dev->dev, (pagenum/PAGES_PER_SECTOR)*PAGES_PER_SECTOR*PAGESIZE, pagenum*PAGESIZE, pagedata, length);
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if (retval != 0) {
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printf("Flash write error, page %u\nRetval %d\n", (unsigned)pagenum, retval);
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return -FLASH_WRITE_ERROR;
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}
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return 0;
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}
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int verify_flash(alt_u32 offset, alt_u32 length, alt_u32 golden_crc, alt_u8 *tmpbuf)
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{
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alt_u32 crcval=0, i, bytes_to_read;
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int retval;
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for (i=0; i<length; i=i+PAGESIZE) {
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bytes_to_read = ((length-i < PAGESIZE) ? (length-i) : PAGESIZE);
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retval = read_flash(i, bytes_to_read, tmpbuf);
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if (retval != 0)
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return retval;
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crcval = crc32(tmpbuf, bytes_to_read, (i==0));
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}
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if (crcval != golden_crc)
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return -FLASH_VERIFY_ERROR;
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return 0;
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}
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