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63fd9026f1
Struct flashchip is used only for the flashchips array and for operations which do not access hardware, e.g. printing a list of supported flash chips. struct flashctx (flash context) contains all data available in struct flashchip, but it also contains runtime information like mapping addresses. struct flashctx is expected to grow additional members over time, a prime candidate being programmer info. struct flashctx contains all of struct flashchip with identical member layout, but struct flashctx has additional members at the end. The separation between struct flashchip/flashctx shrinks the memory requirement of the big flashchips array and allows future extension of flashctx without having to worry about bloat. Corresponding to flashrom svn r1473. 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 flashctx *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 flashctx *flash, uint8_t *buf, unsigned int start, unsigned 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 flashctx *flash, uint8_t *buf, unsigned int start, unsigned 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 flashctx *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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