56e2f130a6
With CL:1940398, this option is no longer needed. Recovery requests are not cleared until kernel verification stage is reached. If the FSP triggers any reboots, recovery requests will be preserved. In particular: - Manual requests will be preserved via recovery switch state, whose behaviour is modified in CB:38779. - Other recovery requests will remain in nvdata across reboot. These functions now only work after verstage has run: int vboot_check_recovery_request(void) int vboot_recovery_mode_enabled(void) int vboot_developer_mode_enabled(void) BUG=b:124141368, b:35576380 TEST=make clean && make test-abuild BRANCH=none Change-Id: I52d17a3c6730be5c04c3c0ae020368d11db6ca3c Signed-off-by: Joel Kitching <kitching@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/38780 Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2014 The ChromiumOS Authors. All rights reserved.
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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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#ifndef __VBOOT_MISC_H__
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#define __VBOOT_MISC_H__
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#include <assert.h>
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#include <security/vboot/vboot_common.h>
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#include <vb2_api.h>
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/*
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* Source: security/vboot/common.c
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*/
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struct vb2_context *vboot_get_context(void);
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/*
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* Returns 1 if firmware slot A is used, 0 if slot B is used.
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*/
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static inline int vboot_is_firmware_slot_a(struct vb2_context *ctx)
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{
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return !(ctx->flags & VB2_CONTEXT_FW_SLOT_B);
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}
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/*
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* Check if given flag is set in the flags field in GBB header.
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* Return value:
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* true: Flag is set.
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* false: Flag is not set.
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*/
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static inline bool vboot_is_gbb_flag_set(enum vb2_gbb_flag flag)
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{
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return !!(vb2api_gbb_get_flags(vboot_get_context()) & flag);
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}
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/*
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* Locates firmware as a region device. Returns 0 on success, -1 on failure.
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*/
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int vboot_locate_firmware(struct vb2_context *ctx, struct region_device *fw);
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/*
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* The stage loading code is compiled and entered from multiple stages. The
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* helper functions below attempt to provide more clarity on when certain
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* code should be called. They are implemented inline for better compile-time
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* code elimination.
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*/
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static inline int verification_should_run(void)
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{
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if (CONFIG(VBOOT_SEPARATE_VERSTAGE))
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return ENV_VERSTAGE;
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else if (CONFIG(VBOOT_STARTS_IN_ROMSTAGE))
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return ENV_ROMSTAGE;
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else if (CONFIG(VBOOT_STARTS_IN_BOOTBLOCK))
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return ENV_BOOTBLOCK;
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else
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dead_code();
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}
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static inline int verstage_should_load(void)
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{
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if (CONFIG(VBOOT_SEPARATE_VERSTAGE))
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return ENV_BOOTBLOCK;
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else
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return 0;
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}
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static inline int vboot_logic_executed(void)
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{
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extern int vboot_executed; /* should not be globally accessible */
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/* If we are in the stage that runs verification, or in the stage that
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both loads the verstage and is returned to from it afterwards, we
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need to check a global to see if verification has run. */
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if (verification_should_run() ||
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(verstage_should_load() && CONFIG(VBOOT_RETURN_FROM_VERSTAGE)))
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return vboot_executed;
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if (CONFIG(VBOOT_STARTS_IN_BOOTBLOCK)) {
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/* All other stages are "after the bootblock" */
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return !ENV_BOOTBLOCK;
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} else if (CONFIG(VBOOT_STARTS_IN_ROMSTAGE)) {
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/* Post-RAM stages are "after the romstage" */
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return !ENV_ROMSTAGE_OR_BEFORE;
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} else {
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dead_code();
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}
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}
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#endif /* __VBOOT_MISC_H__ */
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