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532c717bcc
An opaque programmer does not allow direct flash access and only offers abstract probe/read/erase/write methods. Due to that, opaque programmers need their own infrastructure and registration framework. Corresponding to flashrom svn r1459. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2011 Carl-Daniel Hailfinger
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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; version 2 of the License.
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* Contains the opaque programmer framework.
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* An opaque programmer is a programmer which does not provide direct access
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* to the flash chip and which abstracts all flash chip properties into a
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* programmer specific interface.
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*/
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#include <stdint.h>
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#include "flash.h"
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#include "flashchips.h"
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#include "chipdrivers.h"
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#include "programmer.h"
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const struct opaque_programmer opaque_programmer_none = {
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.max_data_read = MAX_DATA_UNSPECIFIED,
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.max_data_write = MAX_DATA_UNSPECIFIED,
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.probe = NULL,
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.read = NULL,
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.write = NULL,
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.erase = NULL,
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};
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const struct opaque_programmer *opaque_programmer = &opaque_programmer_none;
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int probe_opaque(struct flashchip *flash)
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{
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if (!opaque_programmer->probe) {
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msg_perr("%s called before register_opaque_programmer. "
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"Please report a bug at flashrom@flashrom.org\n",
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__func__);
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return 0;
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}
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return opaque_programmer->probe(flash);
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}
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int read_opaque(struct flashchip *flash, uint8_t *buf, int start, int len)
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{
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if (!opaque_programmer->read) {
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msg_perr("%s called before register_opaque_programmer. "
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"Please report a bug at flashrom@flashrom.org\n",
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__func__);
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return 1;
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}
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return opaque_programmer->read(flash, buf, start, len);
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}
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int write_opaque(struct flashchip *flash, uint8_t *buf, int start, int len)
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{
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if (!opaque_programmer->write) {
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msg_perr("%s called before register_opaque_programmer. "
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"Please report a bug at flashrom@flashrom.org\n",
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__func__);
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return 1;
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}
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return opaque_programmer->write(flash, buf, start, len);
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}
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int erase_opaque(struct flashchip *flash, unsigned int blockaddr, unsigned int blocklen)
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{
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if (!opaque_programmer->erase) {
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msg_perr("%s called before register_opaque_programmer. "
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"Please report a bug at flashrom@flashrom.org\n",
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__func__);
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return 1;
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}
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return opaque_programmer->erase(flash, blockaddr, blocklen);
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}
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void register_opaque_programmer(const struct opaque_programmer *pgm)
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{
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if (!pgm->probe || !pgm->read || !pgm->write || !pgm->erase) {
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msg_perr("%s called with one of probe/read/write/erase being "
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"NULL. Please report a bug at flashrom@flashrom.org\n",
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__func__);
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return;
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}
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opaque_programmer = pgm;
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buses_supported |= BUS_PROG;
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}
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