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d3b6acffe4
The following just lays out the structure for write protect manipulation of SPI flash chips in Flashrom. We later follow up with adding support for each manufacturer group. BUG=b:153800563 BRANCH=none TEST=builds Change-Id: Id93b5a1cb2da476fa8a7dde41d7b963024117474 Signed-off-by: Edward O'Callaghan <quasisec@google.com> Reviewed-on: https://review.coreboot.org/c/flashrom/+/40325 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2010 Google Inc.
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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 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
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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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*/
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#ifndef __WRITEPROTECT_H__
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#define __WRITEPROTECT_H__ 1
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enum wp_mode {
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WP_MODE_UNKNOWN = -1,
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WP_MODE_HARDWARE, /* hardware WP pin determines status */
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WP_MODE_POWER_CYCLE, /* WP active until power off/on cycle */
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WP_MODE_PERMANENT, /* status register permanently locked,
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WP permanently enabled */
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};
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struct wp {
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int (*list_ranges)(const struct flashctx *flash);
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int (*set_range)(const struct flashctx *flash,
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unsigned int start, unsigned int len);
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int (*enable)(const struct flashctx *flash, enum wp_mode mode);
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int (*disable)(const struct flashctx *flash);
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int (*wp_status)(const struct flashctx *flash);
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};
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extern struct wp wp_generic;
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enum wp_mode get_wp_mode(const char *mode_str);
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/*
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* Generic write-protect stuff
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*/
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struct modifier_bits {
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int sec; /* if 1, bp bits describe sectors */
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int tb; /* value of top/bottom select bit */
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};
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#endif /* !__WRITEPROTECT_H__ */
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