From 532c717bccc95aa93bae7af8be0695bee83c32b5 Mon Sep 17 00:00:00 2001 From: Carl-Daniel Hailfinger Date: Fri, 4 Nov 2011 21:35:26 +0000 Subject: Add opaque programmer registration infrastructure 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 Acked-by: Michael Karcher --- opaque.c | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 opaque.c (limited to 'opaque.c') diff --git a/opaque.c b/opaque.c new file mode 100644 index 0000000..13c6a09 --- /dev/null +++ b/opaque.c @@ -0,0 +1,99 @@ +/* + * This file is part of the flashrom project. + * + * Copyright (C) 2011 Carl-Daniel Hailfinger + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * Contains the opaque programmer framework. + * An opaque programmer is a programmer which does not provide direct access + * to the flash chip and which abstracts all flash chip properties into a + * programmer specific interface. + */ + +#include +#include "flash.h" +#include "flashchips.h" +#include "chipdrivers.h" +#include "programmer.h" + +const struct opaque_programmer opaque_programmer_none = { + .max_data_read = MAX_DATA_UNSPECIFIED, + .max_data_write = MAX_DATA_UNSPECIFIED, + .probe = NULL, + .read = NULL, + .write = NULL, + .erase = NULL, +}; + +const struct opaque_programmer *opaque_programmer = &opaque_programmer_none; + +int probe_opaque(struct flashchip *flash) +{ + if (!opaque_programmer->probe) { + msg_perr("%s called before register_opaque_programmer. " + "Please report a bug at flashrom@flashrom.org\n", + __func__); + return 0; + } + + return opaque_programmer->probe(flash); +} + +int read_opaque(struct flashchip *flash, uint8_t *buf, int start, int len) +{ + if (!opaque_programmer->read) { + msg_perr("%s called before register_opaque_programmer. " + "Please report a bug at flashrom@flashrom.org\n", + __func__); + return 1; + } + return opaque_programmer->read(flash, buf, start, len); +} + +int write_opaque(struct flashchip *flash, uint8_t *buf, int start, int len) +{ + if (!opaque_programmer->write) { + msg_perr("%s called before register_opaque_programmer. " + "Please report a bug at flashrom@flashrom.org\n", + __func__); + return 1; + } + return opaque_programmer->write(flash, buf, start, len); +} + +int erase_opaque(struct flashchip *flash, unsigned int blockaddr, unsigned int blocklen) +{ + if (!opaque_programmer->erase) { + msg_perr("%s called before register_opaque_programmer. " + "Please report a bug at flashrom@flashrom.org\n", + __func__); + return 1; + } + return opaque_programmer->erase(flash, blockaddr, blocklen); +} + +void register_opaque_programmer(const struct opaque_programmer *pgm) +{ + if (!pgm->probe || !pgm->read || !pgm->write || !pgm->erase) { + msg_perr("%s called with one of probe/read/write/erase being " + "NULL. Please report a bug at flashrom@flashrom.org\n", + __func__); + return; + } + opaque_programmer = pgm; + buses_supported |= BUS_PROG; +} -- cgit v1.1