/* * This file is part of the coreboot project. * * Copyright 2015 Google Inc. * * 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. */ #include <boot_device.h> #include <compiler.h> void __weak boot_device_init(void) { /* Provide weak do-nothing init. */ } static int boot_device_subregion(const struct region *sub, struct region_device *subrd, const struct region_device *parent) { if (parent == NULL) return -1; return rdev_chain(subrd, parent, region_offset(sub), region_sz(sub)); } int boot_device_ro_subregion(const struct region *sub, struct region_device *subrd) { /* Ensure boot device has been initialized at least once. */ boot_device_init(); return boot_device_subregion(sub, subrd, boot_device_ro()); } int boot_device_rw_subregion(const struct region *sub, struct region_device *subrd) { /* Ensure boot device has been initialized at least once. */ boot_device_init(); return boot_device_subregion(sub, subrd, boot_device_rw()); }