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c6588c5af9
The boot_device is a region_device that represents the device from which coreboot retrieves and boots its stages. The existing cbfs implementations use the boot_device as the intermediary for accessing the CBFS region. Also, there's currently only support for a read-only view of the boot_device. i.e. one cannot write to the boot_device using this view. However, a writable boot_device could be added in the future. Change-Id: Ic0da796ab161b8025c90631be3423ba6473ad31c Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/10216 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2015 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; 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.
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*/
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#ifndef _BOOT_DEVICE_H_
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#define _BOOT_DEVICE_H_
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#include <region.h>
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/* Return the region_device for the read-only boot device. */
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const struct region_device *boot_device_ro(void);
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/*
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* Create a sub-region of the read-only boot device.
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* Returns 0 on success, < 0 on error.
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*/
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int boot_device_ro_subregion(const struct region *sub,
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struct region_device *subrd);
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/*
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* Initialize the boot device. This may be called multiple times within
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* a stage so boot device implementations should account for this behavior.
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**/
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void boot_device_init(void);
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#endif /* _BOOT_DEVICE_H_ */
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