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authorPhilipp Deppenwiese <zaolin@das-labor.org>2017-10-17 17:02:29 +0200
committerMartin Roth <martinroth@google.com>2017-10-22 02:14:46 +0000
commitfea2429e254c41b192dd0856966d5f80eb15a07a (patch)
tree40e81b3ca7ee3c1f9985af9a8a24a3a9b21e8700 /src/vboot/bootmode.c
parent9e0d69bf1e0194509108eba23511a12d597ae49e (diff)
downloadcoreboot-fea2429e254c41b192dd0856966d5f80eb15a07a.tar.xz
security/vboot: Move vboot2 to security kconfig section
This commit just moves the vboot sources into the security directory and fixes kconfig/makefile paths. Fix vboot2 headers Change-Id: Icd87f95640186f7a625242a3937e1dd13347eb60 Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/22074 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/vboot/bootmode.c')
-rw-r--r--src/vboot/bootmode.c171
1 files changed, 0 insertions, 171 deletions
diff --git a/src/vboot/bootmode.c b/src/vboot/bootmode.c
deleted file mode 100644
index 120744837b..0000000000
--- a/src/vboot/bootmode.c
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright 2016 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 <assert.h>
-#include <bootmode.h>
-#include <bootstate.h>
-#include <cbmem.h>
-#include <rules.h>
-#include <string.h>
-#include <vb2_api.h>
-#include <vboot/misc.h>
-#include <vboot/vbnv.h>
-#include <vboot/vboot_common.h>
-
-static int vb2_get_recovery_reason_shared_data(void)
-{
- /* Shared data does not exist for Ramstage and Post-CAR stage. */
- if (ENV_RAMSTAGE || ENV_POSTCAR)
- return 0;
-
- struct vb2_shared_data *sd = vb2_get_shared_data();
- assert(sd);
- return sd->recovery_reason;
-}
-
-void vb2_save_recovery_reason_vbnv(void)
-{
- if (!IS_ENABLED(CONFIG_VBOOT_SAVE_RECOVERY_REASON_ON_REBOOT))
- return;
-
- int reason = vb2_get_recovery_reason_shared_data();
- if (!reason)
- return;
-
- set_recovery_mode_into_vbnv(reason);
-}
-
-static void vb2_clear_recovery_reason_vbnv(void *unused)
-{
- if (!IS_ENABLED(CONFIG_VBOOT_SAVE_RECOVERY_REASON_ON_REBOOT))
- return;
-
- set_recovery_mode_into_vbnv(0);
-}
-
-/*
- * Recovery reason stored in VBNV needs to be cleared before the state of VBNV
- * is backed-up anywhere or jumping to the payload (whichever occurs
- * first). Currently, vbnv_cmos.c backs up VBNV on POST_DEVICE. Thus, we need to
- * make sure that the stored recovery reason is cleared off before that
- * happens.
- * IMPORTANT: Any reboot occurring after BS_DEV_INIT state will cause loss of
- * recovery reason on reboot. Until now, we have seen reboots occuring on x86
- * only in FSP stages which run before BS_DEV_INIT.
- */
-BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT,
- vb2_clear_recovery_reason_vbnv, NULL);
-
-/*
- * Returns 1 if vboot is being used and currently in a stage which might have
- * already executed vboot verification.
- */
-static int vboot_possibly_executed(void)
-{
- if (IS_ENABLED(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK)) {
- if (ENV_BOOTBLOCK && IS_ENABLED(CONFIG_VBOOT_SEPARATE_VERSTAGE))
- return 0;
- return 1;
- }
-
- if (IS_ENABLED(CONFIG_VBOOT_STARTS_IN_ROMSTAGE)) {
- if (ENV_BOOTBLOCK)
- return 0;
- return 1;
- }
-
- return 0;
-}
-
-/*
- * vb2_check_recovery_request looks up different components to identify if there
- * is a recovery request and returns appropriate reason code:
- * 1. Checks if recovery mode is initiated by EC. If yes, returns
- * VB2_RECOVERY_RO_MANUAL.
- * 2. Checks if recovery request is present in VBNV and returns the code read
- * from it.
- * 3. Checks recovery request in handoff for stages post-cbmem.
- * 4. For non-CBMEM stages, check if vboot verification is done and look-up
- * selected region to identify if vboot_refence library has requested recovery
- * path. If yes, return the reason code from shared data.
- * 5. If nothing applies, return 0 indicating no recovery request.
- */
-int vboot_check_recovery_request(void)
-{
- int reason = 0;
-
- /* EC-initiated recovery. */
- if (get_recovery_mode_switch())
- return VB2_RECOVERY_RO_MANUAL;
-
- /* Recovery request in VBNV. */
- if ((reason = get_recovery_mode_from_vbnv()) != 0)
- return reason;
-
- /*
- * Check recovery flag in vboot_handoff for stages post CBMEM coming
- * online. Since for some stages there is no way to know if cbmem has
- * already come online, try looking up handoff anyways. If it fails,
- * flow will fallback to looking up shared data.
- */
- if (cbmem_possibly_online() &&
- ((reason = vboot_handoff_get_recovery_reason()) != 0))
- return reason;
-
- /*
- * For stages where CBMEM might not be online, identify if vboot
- * verification is already complete and no slot was selected
- * i.e. recovery path was requested.
- */
- if (vboot_possibly_executed() && vb2_logic_executed() &&
- !vb2_is_slot_selected())
- return vb2_get_recovery_reason_shared_data();
-
- return 0;
-}
-
-int vboot_recovery_mode_enabled(void)
-{
- return !!vboot_check_recovery_request();
-}
-
-int __attribute__((weak)) clear_recovery_mode_switch(void)
-{
- // Weak implementation. Nothing to do.
- return 0;
-}
-
-void __attribute__((weak)) log_recovery_mode_switch(void)
-{
- // Weak implementation. Nothing to do.
-}
-
-int __attribute__((weak)) get_recovery_mode_retrain_switch(void)
-{
- return 0;
-}
-
-int vboot_recovery_mode_memory_retrain(void)
-{
- return get_recovery_mode_retrain_switch();
-}
-
-int vboot_developer_mode_enabled(void)
-{
- if (cbmem_possibly_online() && vboot_handoff_check_developer_flag())
- return 1;
-
- return 0;
-}