mirror of
				https://review.coreboot.org/flashrom.git
				synced 2025-11-04 15:10:39 +01:00 
			
		
		
		
	Add a new layout_compare() function which will be used in a subsequent
patch to test equality between two layouts. Add a test function for
layout_compare(). Fix a small bug in compare_region_with_dump() which
was introduced in commit 74a1a54892 ("libflashrom: Fix comparison of
layout romentry regions"), which was discovered with the new test.
Change-Id: Ib37556bb83d4e1c26545a90b49128f1f78ffe2c6
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/89629
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
		
	
		
			
				
	
	
		
			715 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			715 lines
		
	
	
		
			24 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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 * Copyright (C) 2012 secunet Security Networks AG
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 * (Written by Nico Huber <nico.huber@secunet.com> for secunet)
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 * Copyright (C) 2025 Dmitry Zhadinets <dzhadinets@gmail.com>
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 * Copyright (C) 2025 Google LLC
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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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#ifndef __LIBFLASHROM_H__
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#define __LIBFLASHROM_H__ 1
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/**
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 * @mainpage
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 *
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 * Have a look at the Modules section for a function reference.
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 */
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#include <sys/types.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdarg.h>
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/**
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 * @defgroup flashrom-general General
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 * @{
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 */
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/**
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 * @brief Initialize libflashrom.
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 *
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 * @param perform_selfcheck If not zero, perform a self check.
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 * @return 0 on success
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 */
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int flashrom_init(int perform_selfcheck);
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/**
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 * @brief Shut down libflashrom.
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 * @return 0 on success
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 */
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int flashrom_shutdown(void);
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enum flashrom_log_level {
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	FLASHROM_MSG_ERROR	= 0,
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	FLASHROM_MSG_WARN	= 1,
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	FLASHROM_MSG_INFO	= 2,
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	FLASHROM_MSG_DEBUG	= 3,
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	FLASHROM_MSG_DEBUG2	= 4,
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	FLASHROM_MSG_SPEW	= 5,
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};
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typedef int(flashrom_log_callback)(enum flashrom_log_level, const char *format, va_list);
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/**
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 * @brief Set the log level.
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 *
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 * Set a log level for messages from libflashrom.
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 * The print callback will be invoked only for messages
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 * with a log level less than or equal to the configured value.
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 * The default log level is FLASHROM_MSG_INFO.
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 *
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 * @param level The log level to be set.
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 */
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 void flashrom_set_log_level(enum flashrom_log_level level);
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/**
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 * @brief Set the log callback function.
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 *
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 * Set a callback function which will be invoked whenever libflashrom wants
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 * to output messages. This allows frontends to do whatever they see fit with
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 * such messages, e.g. write them to syslog, or to a file, or print them in a
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 * GUI window, etc.
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 *
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 * @param log_callback Pointer to the new log callback function.
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 */
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void flashrom_set_log_callback(flashrom_log_callback *log_callback);
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typedef void (flashrom_log_callback_v2)(
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	enum flashrom_log_level,
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	const char* message,
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	void* user_data);
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/**
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 * @brief Set the log callback function.
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 *
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 * Set a callback function which will be invoked whenever libflashrom wants
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 * to output messages. This allows frontends to do whatever they see fit with
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 * such messages, e.g. write them to syslog, or to a file, or print them in a
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 * GUI window, etc.
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 * The message is formatted using vsnprintf
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 *
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 * @param log_callback Pointer to the new log callback function.
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 * @param user_data A pointer to data managed by the caller.
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 */
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void flashrom_set_log_callback_v2(flashrom_log_callback_v2 *log_callback, void* user_data);
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enum flashrom_progress_stage {
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	FLASHROM_PROGRESS_READ,
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	FLASHROM_PROGRESS_WRITE,
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	FLASHROM_PROGRESS_ERASE,
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	FLASHROM_PROGRESS_NR,
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};
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struct flashrom_progress {
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	enum flashrom_progress_stage stage;
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	size_t current;
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	size_t total;
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	void *user_data;
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};
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struct flashrom_flashctx;
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typedef void(flashrom_progress_callback)(struct flashrom_flashctx *flashctx);
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/**
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 * @deprecated Use flashrom_set_progress_callback_v2 instead
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 */
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void flashrom_set_progress_callback(
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  struct flashrom_flashctx *const flashctx,
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  flashrom_progress_callback *progress_callback,
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  struct flashrom_progress *progress_state)
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__attribute__((deprecated("Use flashrom_set_progress_callback_v2 instead")));
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typedef void(flashrom_progress_callback_v2)(enum flashrom_progress_stage stage,
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						size_t current,
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						size_t total,
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						void *user_data);
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/**
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 * @brief Set the progress callback function.
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 *
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 * Set a callback function which will be invoked whenever libflashrom wants
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 * to indicate the progress has changed. This allows frontends to do whatever
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 * they see fit with such values, e.g. update a progress bar in a GUI tool.
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 *
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 * @param flashrom_progress_callback_v2 Pointer to the new progress callback function.
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 * @param user_data A pointer to a piece of data which is managed by progress caller
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 */
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void flashrom_set_progress_callback_v2(struct flashrom_flashctx *const flashctx,
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					flashrom_progress_callback_v2 *progress_callback,
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					void* user_data);
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/** @} */ /* end flashrom-general */
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/**
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 * @defgroup flashrom-query Querying
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 * @{
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 */
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enum flashrom_test_state {
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	FLASHROM_TESTED_OK  = 0,
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	FLASHROM_TESTED_NT  = 1,
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	FLASHROM_TESTED_BAD = 2,
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	FLASHROM_TESTED_DEP = 3,
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	FLASHROM_TESTED_NA  = 4,
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};
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struct flashrom_flashchip_info {
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	const char *vendor;
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	const char *name;
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	unsigned int total_size;
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	struct flashrom_tested {
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		enum flashrom_test_state probe;
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		enum flashrom_test_state read;
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		enum flashrom_test_state erase;
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		enum flashrom_test_state write;
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		enum flashrom_test_state wp;
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	} tested;
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};
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struct flashrom_board_info {
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	const char *vendor;
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	const char *name;
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	enum flashrom_test_state working;
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};
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struct flashrom_chipset_info {
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	const char *vendor;
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	const char *chipset;
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	uint16_t vendor_id;
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	uint16_t chipset_id;
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	enum flashrom_test_state status;
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};
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/**
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 * @brief Returns flashrom version
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 * @return flashrom version
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 */
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const char *flashrom_version_info(void);
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/**
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 * @brief Returns list of supported programmers
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 * The last entry in the returned list is followed by a NULL.
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 *
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 * @return List of supported programmers, or NULL if an error occurred.
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 *  The pointer must be freed after using flashrom_data_free
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 */
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const char **flashrom_supported_programmers(void);
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/**
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 * @brief Returns list of supported flash chips
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 * @return List of supported flash chips, or NULL if an error occurred
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 */
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struct flashrom_flashchip_info *flashrom_supported_flash_chips(void);
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/**
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 * @brief Returns list of supported mainboards
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 * @return List of supported mainboards, or NULL if an error occurred
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 */
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struct flashrom_board_info *flashrom_supported_boards(void);
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/**
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 * @brief Returns list of supported chipsets
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 * @return List of supported chipsets, or NULL if an error occurred
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 */
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struct flashrom_chipset_info *flashrom_supported_chipsets(void);
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/**
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 * @brief Frees memory allocated by libflashrom API
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 * @param p Pointer to block of memory which should be freed
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 * @return 0 on success
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 */
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int flashrom_data_free(void *const p);
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/** @} */ /* end flashrom-query */
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/**
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 * @defgroup flashrom-prog Programmers
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 * @{
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 */
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struct flashrom_programmer;
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/**
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 * @brief Initialize the specified programmer.
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 *
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 * Currently, only one programmer may be initialized at a time.
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 *
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 * @param[out] flashprog Points to a pointer of type struct flashrom_programmer
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 *                       that will be set if programmer initialization succeeds.
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 *                       *flashprog has to be shutdown by the caller with @ref
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 *                       flashrom_programmer_shutdown.
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 * @param[in] prog_name Name of the programmer to initialize.
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 * @param[in] prog_params Pointer to programmer specific parameters.
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 * @return 0 on success
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 */
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int flashrom_programmer_init(struct flashrom_programmer **flashprog, const char *prog_name, const char *prog_params);
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/**
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 * @brief Shut down the initialized programmer.
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 *
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 * @param flashprog The programmer to shut down.
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 * @return 0 on success
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 */
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int flashrom_programmer_shutdown(struct flashrom_programmer *flashprog);
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/** @} */ /* end flashrom-prog */
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/**
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 * @defgroup flashrom-flash Flash chips
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 * @{
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 */
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/**
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 * @deprecated Use flashrom_flash_probe_v2 instead
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 *
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 * @brief Probe for a flash chip.
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 *
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 * Probes for a flash chip and returns a flash context, that can be used
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 * later with flash chip and @ref flashrom-ops "image operations", if
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 * exactly one matching chip is found.
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 *
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 * @param[out] flashctx Points to a pointer of type struct flashrom_flashctx
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 *                      that will be set if exactly one chip is found. *flashctx
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 *                      has to be freed by the caller with @ref flashrom_flash_release.
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 * @param[in] flashprog The flash programmer used to access the chip.
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 * @param[in] chip_name Name of a chip to probe for, or NULL to probe for
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 *                      all known chips.
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 * @return 0 on success,
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 *         3 if multiple chips were found,
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 *         2 if no chip was found,
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 *         or 1 on any other error.
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 */
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int flashrom_flash_probe(struct flashrom_flashctx **flashctx, const struct flashrom_programmer *flashprog, const char *chip_name)
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__attribute__((deprecated("Use flashrom_flash_probe_v2 instead")));
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/**
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 * @brief Probe for a flash chip, v2
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 *
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 * Probes for a flash chip and returns a flash context, that can be used
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 * later with flash chip and @ref flashrom-ops "image operations", if
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 * exactly one matching chip is found.
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 *
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 * Returns the list of names for all chips that matched, and the count of
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 * how many chips matched.
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 *
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 * Memory for the list of chips is dynamically allocated according to the
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 * number of chips found, and always needs to be freed with flashrom_data_free
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 * afterwards (including when no matches found or error happened).
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 *
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 * Note that if chip_name param is set, then probing happens only once, only
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 * for this one requested chip name. So the number of matches that can be
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 * returned in this case will be either 1 or 0 (and -1 for error).
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 *
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 * @param[out] flashctx Points to a struct flashrom_flashctx
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 *                      that will be set if exactly one chip is found. *flashctx
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 *                      has to be freed by the caller with @ref flashrom_flash_release.
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 * @param[out] all_matched_names pointer to an array containing the names of all chips
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 *				 that were successfully probed, terminated with a NULL pointer.
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 *				 If no chips are found, the returned array contains
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 *				 a single NULL element. Callers must free the array once unused
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 *				 by calling `flashrom_data_free`.
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 * @param[in] flashprog The flash programmer used to access the chip,
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 *			currently unused.
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 * @param[in] chip_name Name of a chip to probe for, or NULL to probe for
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 *                      all known chips.
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 * @return the number of matched chips (which can be 0) on success,
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 *         -1 if error happened during probing.
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 */
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int flashrom_flash_probe_v2(struct flashrom_flashctx *flashctx,
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				const char *** const all_matched_names,
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				const struct flashrom_programmer *flashprog,
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				const char *chip_name);
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/**
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 * @brief Returns the size of the specified flash chip in bytes.
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 *
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 * @param flashctx The queried flash context.
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 * @return Size of flash chip in bytes.
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 */
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size_t flashrom_flash_getsize(const struct flashrom_flashctx *flashctx);
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/**
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 * @brief Erase the specified ROM chip.
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 *
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 * If a layout is set in the given flash context, only included regions
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 * will be erased.
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 *
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 * @param flashctx The context of the flash chip to erase.
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 * @return 0 on success.
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 */
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int flashrom_flash_erase(struct flashrom_flashctx *flashctx);
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/**
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 * @brief Free a flash context.
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 *
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 * @param flashctx Flash context to free.
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 */
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void flashrom_flash_release(struct flashrom_flashctx *flashctx);
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enum flashrom_flag {
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	FLASHROM_FLAG_FORCE,
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	FLASHROM_FLAG_FORCE_BOARDMISMATCH,
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	FLASHROM_FLAG_VERIFY_AFTER_WRITE,
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	FLASHROM_FLAG_VERIFY_WHOLE_CHIP,
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	FLASHROM_FLAG_SKIP_UNREADABLE_REGIONS,
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	FLASHROM_FLAG_SKIP_UNWRITABLE_REGIONS,
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};
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/**
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 * @brief Set a flag in the given flash context.
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 *
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 * @param flashctx Flash context to alter.
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 * @param flag	   Flag that is to be set / cleared.
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 * @param value	   Value to set.
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 */
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void flashrom_flag_set(struct flashrom_flashctx *flashctx, enum flashrom_flag flag, bool value);
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/**
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 * @brief Return the current value of a flag in the given flash context.
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 *
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 * @param flashctx Flash context to read from.
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 * @param flag	   Flag to be read.
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 * @return Current value of the flag.
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 */
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bool flashrom_flag_get(const struct flashrom_flashctx *flashctx, enum flashrom_flag flag);
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/** @} */ /* end flashrom-flash */
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/**
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 * @defgroup flashrom-ops Operations
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 * @{
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 */
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/**
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 * @brief Read the current image from the specified ROM chip.
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 *
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 * If a layout is set in the specified flash context, only included regions
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 * will be read.
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 *
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 * @param flashctx The context of the flash chip.
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 * @param buffer Target buffer to write image to.
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 * @param buffer_len Size of target buffer in bytes.
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 * @return 0 on success,
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 *         2 if buffer_len is too small for the flash chip's contents,
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 *         or 1 on any other failure.
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 */
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int flashrom_image_read(struct flashrom_flashctx *flashctx, void *buffer, size_t buffer_len);
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/**
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 * @brief Write the specified image to the ROM chip.
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 *
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 * If a layout is set in the specified flash context, only erase blocks
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 * containing included regions will be touched.
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 *
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 * @param flashctx The context of the flash chip.
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 * @param buffer Source buffer to read image from (may be altered for full verification).
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 * @param buffer_len Size of source buffer in bytes.
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 * @param refbuffer If given, assume flash chip contains same data as `refbuffer`.
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 * @return 0 on success,
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 *         4 if buffer_len doesn't match the size of the flash chip,
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						|
 *         3 if write was tried but nothing has changed,
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 *         2 if write failed and flash contents changed,
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 *         or 1 on any other failure.
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 */
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int flashrom_image_write(struct flashrom_flashctx *flashctx, void *buffer, size_t buffer_len, const void *refbuffer);
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/**
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 * @brief Verify the ROM chip's contents with the specified image.
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 *
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						|
 * If a layout is set in the specified flash context, only included regions
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 * will be verified.
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						|
 *
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						|
 * @param flashctx The context of the flash chip.
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						|
 * @param buffer Source buffer to verify with.
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						|
 * @param buffer_len Size of source buffer in bytes.
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						|
 * @return 0 on success,
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						|
 *         3 if the chip's contents don't match,
 | 
						|
 *         2 if buffer_len doesn't match the size of the flash chip,
 | 
						|
 *         or 1 on any other failure.
 | 
						|
 */
 | 
						|
int flashrom_image_verify(struct flashrom_flashctx *flashctx, const void *buffer, size_t buffer_len);
 | 
						|
 | 
						|
/** @} */ /* end flashrom-ops */
 | 
						|
 | 
						|
/**
 | 
						|
 * @defgroup flashrom-layout Layout handling
 | 
						|
 * @{
 | 
						|
 */
 | 
						|
 | 
						|
struct flashrom_layout;
 | 
						|
/**
 | 
						|
 * @brief Create a new, empty layout.
 | 
						|
 *
 | 
						|
 * @param layout Pointer to returned layout reference.
 | 
						|
 *
 | 
						|
 * @return 0 on success,
 | 
						|
 *         1 if out of memory.
 | 
						|
 */
 | 
						|
int flashrom_layout_new(struct flashrom_layout **layout);
 | 
						|
 | 
						|
/**
 | 
						|
 * @brief Read a layout from the Intel ICH descriptor in the flash.
 | 
						|
 *
 | 
						|
 * Optionally verify that the layout matches the one in the given
 | 
						|
 * descriptor dump.
 | 
						|
 *
 | 
						|
 * @param[out] layout Points to a struct flashrom_layout pointer that
 | 
						|
 *                    gets set if the descriptor is read and parsed
 | 
						|
 *                    successfully.
 | 
						|
 * @param[in] flashctx Flash context to read the descriptor from flash.
 | 
						|
 * @param[in] dump     The descriptor dump to compare to or NULL.
 | 
						|
 * @param[in] len      The length of the descriptor dump.
 | 
						|
 *
 | 
						|
 * @return 0 on success,
 | 
						|
 *         6 if descriptor parsing isn't implemented for the host,
 | 
						|
 *         5 if the descriptors don't match,
 | 
						|
 *         4 if the descriptor dump couldn't be parsed,
 | 
						|
 *         3 if the descriptor on flash couldn't be parsed,
 | 
						|
 *         2 if the descriptor on flash couldn't be read,
 | 
						|
 *         1 on any other error.
 | 
						|
 */
 | 
						|
int flashrom_layout_read_from_ifd(struct flashrom_layout **layout, struct flashrom_flashctx *flashctx, const void *dump, size_t len);
 | 
						|
/**
 | 
						|
 * @brief Read a layout by searching the flash chip for fmap.
 | 
						|
 *
 | 
						|
 * @param[out] layout Points to a struct flashrom_layout pointer that
 | 
						|
 *                    gets set if the fmap is read and parsed successfully.
 | 
						|
 * @param[in] flashctx Flash context
 | 
						|
 * @param[in] offset Offset to begin searching for fmap.
 | 
						|
 * @param[in] length Length of address space to search.
 | 
						|
 *
 | 
						|
 * @return 0 on success,
 | 
						|
 *         3 if fmap parsing isn't implemented for the host,
 | 
						|
 *         2 if the fmap couldn't be read,
 | 
						|
 *         1 on any other error.
 | 
						|
 */
 | 
						|
int flashrom_layout_read_fmap_from_rom(struct flashrom_layout **layout,
 | 
						|
		struct flashrom_flashctx *flashctx, size_t offset, size_t length);
 | 
						|
/**
 | 
						|
 * @brief Read a layout by searching a buffer for fmap.
 | 
						|
 *
 | 
						|
 * @param[out] layout Points to a struct flashrom_layout pointer that
 | 
						|
 *                    gets set if the fmap is read and parsed successfully.
 | 
						|
 * @param[in] flashctx Flash context
 | 
						|
 * @param[in] buffer Buffer to search in
 | 
						|
 * @param[in] len Size of buffer to search
 | 
						|
 *
 | 
						|
 * @return 0 on success,
 | 
						|
 *         3 if fmap parsing isn't implemented for the host,
 | 
						|
 *         2 if the fmap couldn't be read,
 | 
						|
 *         1 on any other error.
 | 
						|
 */
 | 
						|
int flashrom_layout_read_fmap_from_buffer(struct flashrom_layout **layout,
 | 
						|
		struct flashrom_flashctx *flashctx, const uint8_t *buffer, size_t len);
 | 
						|
/**
 | 
						|
 * @brief Add a region to an existing layout.
 | 
						|
 *
 | 
						|
 * @param layout The existing layout.
 | 
						|
 * @param start  Start address of the region.
 | 
						|
 * @param end    End address (inclusive) of the region.
 | 
						|
 * @param name   Name of the region.
 | 
						|
 *
 | 
						|
 * @return 0 on success,
 | 
						|
 *         1 if out of memory.
 | 
						|
 */
 | 
						|
int flashrom_layout_add_region(struct flashrom_layout *layout, size_t start, size_t end, const char *name);
 | 
						|
/**
 | 
						|
 * @brief Mark given region as included.
 | 
						|
 *
 | 
						|
 * @param layout The layout to alter.
 | 
						|
 * @param name   The name of the region to include.
 | 
						|
 *
 | 
						|
 * @return 0 on success,
 | 
						|
 *         1 if the given name can't be found.
 | 
						|
 */
 | 
						|
int flashrom_layout_include_region(struct flashrom_layout *layout, const char *name);
 | 
						|
/**
 | 
						|
 * @brief Mark given region as not included.
 | 
						|
 *
 | 
						|
 * @param layout The layout to alter.
 | 
						|
 * @param name   The name of the region to exclude.
 | 
						|
 *
 | 
						|
 * @return 0 on success,
 | 
						|
 *         1 if the given name can't be found.
 | 
						|
 */
 | 
						|
int flashrom_layout_exclude_region(struct flashrom_layout *layout, const char *name);
 | 
						|
/**
 | 
						|
 * @brief Get given region's offset and length.
 | 
						|
 *
 | 
						|
 * @param[in]  layout The existing layout.
 | 
						|
 * @param[in]  name   The name of the region.
 | 
						|
 * @param[out] start  The start address to be written.
 | 
						|
 * @param[out] len    The length of the region to be written.
 | 
						|
 *
 | 
						|
 * @return 0 on success,
 | 
						|
 *         1 if the given name can't be found.
 | 
						|
 */
 | 
						|
int flashrom_layout_get_region_range(struct flashrom_layout *layout, const char *name,
 | 
						|
		     unsigned int *start, unsigned int *len);
 | 
						|
/**
 | 
						|
 * @brief Free a layout.
 | 
						|
 *
 | 
						|
 * @param layout Layout to free.
 | 
						|
 */
 | 
						|
void flashrom_layout_release(struct flashrom_layout *layout);
 | 
						|
/**
 | 
						|
 * @brief Compare two flashrom layouts for equality.
 | 
						|
 *
 | 
						|
 * Compares all regions in both layouts. Two layouts are considered equal if they
 | 
						|
 * contain the same number of regions, in the same order, with identical start/end
 | 
						|
 * addresses and names.
 | 
						|
 *
 | 
						|
 * @param layout1 First layout to compare.
 | 
						|
 * @param layout2 Second layout to compare.
 | 
						|
 *
 | 
						|
 * @return 0 if layouts are identical,
 | 
						|
 *         1 if they differ or if either layout is NULL.
 | 
						|
 */
 | 
						|
int flashrom_layout_compare(const struct flashrom_layout *layout1,
 | 
						|
			    const struct flashrom_layout *layout2);
 | 
						|
/**
 | 
						|
 * @brief Set the active layout for a flash context.
 | 
						|
 *
 | 
						|
 * Note: The caller must not release the layout as long as it is used through
 | 
						|
 *       the given flash context.
 | 
						|
 *
 | 
						|
 * @param flashctx Flash context whose layout will be set.
 | 
						|
 * @param layout   Layout to bet set.
 | 
						|
 */
 | 
						|
void flashrom_layout_set(struct flashrom_flashctx *flashctx, const struct flashrom_layout *layout);
 | 
						|
 | 
						|
/** @} */ /* end flashrom-layout */
 | 
						|
 | 
						|
/**
 | 
						|
 * @defgroup flashrom-wp Write Protect
 | 
						|
 * @{
 | 
						|
 */
 | 
						|
 | 
						|
enum flashrom_wp_result {
 | 
						|
	FLASHROM_WP_OK = 0,
 | 
						|
	FLASHROM_WP_ERR_CHIP_UNSUPPORTED = 1,
 | 
						|
	FLASHROM_WP_ERR_OTHER = 2,
 | 
						|
	FLASHROM_WP_ERR_READ_FAILED = 3,
 | 
						|
	FLASHROM_WP_ERR_WRITE_FAILED = 4,
 | 
						|
	FLASHROM_WP_ERR_VERIFY_FAILED = 5,
 | 
						|
	FLASHROM_WP_ERR_RANGE_UNSUPPORTED = 6,
 | 
						|
	FLASHROM_WP_ERR_MODE_UNSUPPORTED = 7,
 | 
						|
	FLASHROM_WP_ERR_RANGE_LIST_UNAVAILABLE = 8,
 | 
						|
	FLASHROM_WP_ERR_UNSUPPORTED_STATE = 9
 | 
						|
};
 | 
						|
 | 
						|
enum flashrom_wp_mode {
 | 
						|
	FLASHROM_WP_MODE_DISABLED,
 | 
						|
	FLASHROM_WP_MODE_HARDWARE,
 | 
						|
	FLASHROM_WP_MODE_POWER_CYCLE,
 | 
						|
	FLASHROM_WP_MODE_PERMANENT
 | 
						|
};
 | 
						|
struct flashrom_wp_cfg;
 | 
						|
struct flashrom_wp_ranges;
 | 
						|
/**
 | 
						|
 * @brief Create a new empty WP configuration.
 | 
						|
 *
 | 
						|
 * @param[out] cfg Points to a pointer of type struct flashrom_wp_cfg that will
 | 
						|
 *                 be set if creation succeeds. *cfg has to be freed by the
 | 
						|
 *                 caller with @ref flashrom_wp_cfg_release.
 | 
						|
 * @return  0 on success
 | 
						|
 *         >0 on failure
 | 
						|
 */
 | 
						|
enum flashrom_wp_result flashrom_wp_cfg_new(struct flashrom_wp_cfg **cfg);
 | 
						|
/**
 | 
						|
 * @brief Free a WP configuration.
 | 
						|
 *
 | 
						|
 * @param[in] cfg Pointer to the flashrom_wp_cfg to free.
 | 
						|
 */
 | 
						|
void flashrom_wp_cfg_release(struct flashrom_wp_cfg *cfg);
 | 
						|
/**
 | 
						|
 * @brief Set the protection mode for a WP configuration.
 | 
						|
 *
 | 
						|
 * @param[in]  mode The protection mode to set.
 | 
						|
 * @param[out] cfg  Pointer to the flashrom_wp_cfg structure to modify.
 | 
						|
 */
 | 
						|
void flashrom_wp_set_mode(struct flashrom_wp_cfg *cfg, enum flashrom_wp_mode mode);
 | 
						|
/**
 | 
						|
 * @brief Get the protection mode from a WP configuration.
 | 
						|
 *
 | 
						|
 * @param[in] cfg The WP configuration to get the protection mode from.
 | 
						|
 * @return        The configuration's protection mode.
 | 
						|
 */
 | 
						|
enum flashrom_wp_mode flashrom_wp_get_mode(const struct flashrom_wp_cfg *cfg);
 | 
						|
/**
 | 
						|
 * @brief Set the protection range for a WP configuration.
 | 
						|
 *
 | 
						|
 * @param[out] cfg   Pointer to the flashrom_wp_cfg structure to modify.
 | 
						|
 * @param[in]  start The range's start address.
 | 
						|
 * @param[in]  len   The range's length.
 | 
						|
 */
 | 
						|
void flashrom_wp_set_range(struct flashrom_wp_cfg *cfg, size_t start, size_t len);
 | 
						|
/**
 | 
						|
 * @brief Get the protection range from a WP configuration.
 | 
						|
 *
 | 
						|
 * @param[out] start Points to a size_t to write the range start to.
 | 
						|
 * @param[out] len   Points to a size_t to write the range length to.
 | 
						|
 * @param[in]  cfg   The WP configuration to get the range from.
 | 
						|
 */
 | 
						|
void flashrom_wp_get_range(size_t *start, size_t *len, const struct flashrom_wp_cfg *cfg);
 | 
						|
 | 
						|
/**
 | 
						|
 * @brief Read the current WP configuration from a flash chip.
 | 
						|
 *
 | 
						|
 * @param[out] cfg   Pointer to a struct flashrom_wp_cfg to store the chip's
 | 
						|
 *                   configuration in.
 | 
						|
 * @param[in]  flash The flash context used to access the chip.
 | 
						|
 * @return  0 on success
 | 
						|
 *         >0 on failure
 | 
						|
 */
 | 
						|
enum flashrom_wp_result flashrom_wp_read_cfg(struct flashrom_wp_cfg *cfg, struct flashrom_flashctx *flash);
 | 
						|
/**
 | 
						|
 * @brief Write a WP configuration to a flash chip.
 | 
						|
 *
 | 
						|
 * @param[in] flash The flash context used to access the chip.
 | 
						|
 * @param[in] cfg   The WP configuration to write to the chip.
 | 
						|
 * @return  0 on success
 | 
						|
 *         >0 on failure
 | 
						|
 */
 | 
						|
enum flashrom_wp_result flashrom_wp_write_cfg(struct flashrom_flashctx *flash, const struct flashrom_wp_cfg *cfg);
 | 
						|
 | 
						|
/**
 | 
						|
 * @brief Get a list of protection ranges supported by the flash chip.
 | 
						|
 *
 | 
						|
 * @param[out] ranges Points to a pointer of type struct flashrom_wp_ranges
 | 
						|
 *                    that will be set if available ranges are found. Finding
 | 
						|
 *                    available ranges may not always be possible, even if the
 | 
						|
 *                    chip's protection range can be read or modified. *ranges
 | 
						|
 *                    must be freed using @ref flashrom_wp_ranges_release.
 | 
						|
 * @param[in] flash   The flash context used to access the chip.
 | 
						|
 * @return  0 on success
 | 
						|
 *         >0 on failure
 | 
						|
 */
 | 
						|
enum flashrom_wp_result flashrom_wp_get_available_ranges(struct flashrom_wp_ranges **ranges, struct flashrom_flashctx *flash);
 | 
						|
/**
 | 
						|
 * @brief Get a number of protection ranges in a range list.
 | 
						|
 *
 | 
						|
 * @param[in]  ranges The range list to get the count from.
 | 
						|
 * @return Number of ranges in the list.
 | 
						|
 */
 | 
						|
size_t flashrom_wp_ranges_get_count(const struct flashrom_wp_ranges *ranges);
 | 
						|
/**
 | 
						|
 * @brief Get a protection range from a range list.
 | 
						|
 *
 | 
						|
 * @param[out] start  Points to a size_t to write the range's start to.
 | 
						|
 * @param[out] len    Points to a size_t to write the range's length to.
 | 
						|
 * @param[in]  ranges The range list to get the range from.
 | 
						|
 * @param[in]  index  Index of the range to get.
 | 
						|
 * @return  0 on success
 | 
						|
 *         >0 on failure
 | 
						|
 */
 | 
						|
enum flashrom_wp_result flashrom_wp_ranges_get_range(size_t *start, size_t *len, const struct flashrom_wp_ranges *ranges, unsigned int index);
 | 
						|
/**
 | 
						|
 * @brief Free a WP range list.
 | 
						|
 *
 | 
						|
 * @param[out] ranges Pointer to the flashrom_wp_ranges to free.
 | 
						|
 */
 | 
						|
void flashrom_wp_ranges_release(struct flashrom_wp_ranges *ranges);
 | 
						|
 | 
						|
/** @} */ /* end flashrom-wp */
 | 
						|
 | 
						|
#endif				/* !__LIBFLASHROM_H__ */
 |