1f0ce3a80e
vboot_handoff.c is the only place that needs the vb2 internals. Provide it in the one place it is actually required instead of pulling in the headers unnecessarily in common code. There is, however, still a need to get the vb2 hashing types for a function declaration. Change-Id: I038fda68b1cd05fa2e66135158e5e2d18567563a Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/17475 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com>
189 lines
6.3 KiB
C
189 lines
6.3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2013 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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/* This needs to be pulled in first so that the handoff code below and
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* peek into the vb2 data structures. Additionally, vboot doesn't currently
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* include what it uses in its own headers. Provide the types it's after.
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* TODO: fix this necessity. */
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#define NEED_VB20_INTERNALS
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#include <stddef.h>
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#include <stdint.h>
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#include <vb2_api.h>
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#include <arch/stages.h>
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#include <assert.h>
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#include <bootmode.h>
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#include <string.h>
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#include <cbfs.h>
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#include <cbmem.h>
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#include <console/console.h>
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#include <console/vtxprintf.h>
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#include <fmap.h>
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#include <stdlib.h>
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#include <timestamp.h>
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#include <vboot_struct.h>
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#include <vboot/vbnv.h>
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#include <vboot/misc.h>
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/**
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* Sets vboot_handoff based on the information in vb2_shared_data
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*/
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static void fill_vboot_handoff(struct vboot_handoff *vboot_handoff,
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struct vb2_shared_data *vb2_sd)
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{
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VbSharedDataHeader *vb_sd =
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(VbSharedDataHeader *)vboot_handoff->shared_data;
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uint32_t *oflags = &vboot_handoff->init_params.out_flags;
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vb_sd->flags |= VBSD_BOOT_FIRMWARE_VBOOT2;
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vboot_handoff->selected_firmware = vb2_sd->fw_slot;
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vb_sd->firmware_index = vb2_sd->fw_slot;
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vb_sd->magic = VB_SHARED_DATA_MAGIC;
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vb_sd->struct_version = VB_SHARED_DATA_VERSION;
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vb_sd->struct_size = sizeof(VbSharedDataHeader);
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vb_sd->data_size = VB_SHARED_DATA_MIN_SIZE;
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vb_sd->data_used = sizeof(VbSharedDataHeader);
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vb_sd->fw_version_tpm = vb2_sd->fw_version_secdata;
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if (get_write_protect_state())
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vb_sd->flags |= VBSD_BOOT_FIRMWARE_WP_ENABLED;
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if (get_sw_write_protect_state())
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vb_sd->flags |= VBSD_BOOT_FIRMWARE_SW_WP_ENABLED;
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if (vb2_sd->recovery_reason) {
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vb_sd->firmware_index = 0xFF;
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if (vb2_sd->flags & VB2_SD_FLAG_MANUAL_RECOVERY)
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vb_sd->flags |= VBSD_BOOT_REC_SWITCH_ON;
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*oflags |= VB_INIT_OUT_ENABLE_RECOVERY;
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*oflags |= VB_INIT_OUT_CLEAR_RAM;
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*oflags |= VB_INIT_OUT_ENABLE_DISPLAY;
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*oflags |= VB_INIT_OUT_ENABLE_USB_STORAGE;
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}
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if (vb2_sd->flags & VB2_SD_DEV_MODE_ENABLED) {
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*oflags |= VB_INIT_OUT_ENABLE_DEVELOPER;
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*oflags |= VB_INIT_OUT_CLEAR_RAM;
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*oflags |= VB_INIT_OUT_ENABLE_DISPLAY;
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*oflags |= VB_INIT_OUT_ENABLE_USB_STORAGE;
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vb_sd->flags |= VBSD_BOOT_DEV_SWITCH_ON;
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vb_sd->flags |= VBSD_LF_DEV_SWITCH_ON;
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}
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/* TODO: Set these in depthcharge */
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if (IS_ENABLED(CONFIG_VIRTUAL_DEV_SWITCH))
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vb_sd->flags |= VBSD_HONOR_VIRT_DEV_SWITCH;
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if (IS_ENABLED(CONFIG_EC_SOFTWARE_SYNC))
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vb_sd->flags |= VBSD_EC_SOFTWARE_SYNC;
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if (!IS_ENABLED(CONFIG_PHYSICAL_REC_SWITCH))
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vb_sd->flags |= VBSD_BOOT_REC_SWITCH_VIRTUAL;
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if (IS_ENABLED(CONFIG_VBOOT_EC_SLOW_UPDATE))
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vb_sd->flags |= VBSD_EC_SLOW_UPDATE;
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if (IS_ENABLED(CONFIG_VBOOT_OPROM_MATTERS)) {
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vb_sd->flags |= VBSD_OPROM_MATTERS;
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/*
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* Inform vboot if the display was enabled by dev/rec
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* mode or was requested by vboot kernel phase.
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*/
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if ((*oflags & VB_INIT_OUT_ENABLE_DISPLAY) ||
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vboot_wants_oprom()) {
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vb_sd->flags |= VBSD_OPROM_LOADED;
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*oflags |= VB_INIT_OUT_ENABLE_DISPLAY;
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}
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}
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/* In vboot1, VBSD_FWB_TRIED is
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* set only if B is booted as explicitly requested. Therefore, if B is
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* booted because A was found bad, the flag should not be set. It's
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* better not to touch it if we can only ambiguously control it. */
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/* if (vb2_sd->fw_slot)
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vb_sd->flags |= VBSD_FWB_TRIED; */
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/* copy kernel subkey if it's found */
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if (vb2_sd->workbuf_preamble_size) {
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struct vb2_fw_preamble *fp;
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uintptr_t dst, src;
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printk(BIOS_INFO, "Copying FW preamble\n");
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fp = (struct vb2_fw_preamble *)((uintptr_t)vb2_sd +
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vb2_sd->workbuf_preamble_offset);
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src = (uintptr_t)&fp->kernel_subkey +
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fp->kernel_subkey.key_offset;
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dst = (uintptr_t)vb_sd + sizeof(VbSharedDataHeader);
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assert(dst + fp->kernel_subkey.key_size <=
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(uintptr_t)vboot_handoff + sizeof(*vboot_handoff));
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memcpy((void *)dst, (void *)src,
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fp->kernel_subkey.key_size);
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vb_sd->data_used += fp->kernel_subkey.key_size;
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vb_sd->kernel_subkey.key_offset =
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dst - (uintptr_t)&vb_sd->kernel_subkey;
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vb_sd->kernel_subkey.key_size = fp->kernel_subkey.key_size;
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vb_sd->kernel_subkey.algorithm = fp->kernel_subkey.algorithm;
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vb_sd->kernel_subkey.key_version =
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fp->kernel_subkey.key_version;
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}
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vb_sd->recovery_reason = vb2_sd->recovery_reason;
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}
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void vboot_fill_handoff(void)
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{
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struct vboot_handoff *vh;
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struct vb2_shared_data *sd;
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sd = vb2_get_shared_data();
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sd->workbuf_hash_offset = 0;
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sd->workbuf_hash_size = 0;
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printk(BIOS_INFO, "creating vboot_handoff structure\n");
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vh = cbmem_add(CBMEM_ID_VBOOT_HANDOFF, sizeof(*vh));
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if (vh == NULL)
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/* we don't need to failover gracefully here because this
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* shouldn't happen with the image that has passed QA. */
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die("failed to allocate vboot_handoff structure\n");
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memset(vh, 0, sizeof(*vh));
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/* needed until we finish transtion to vboot2 for kernel verification */
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fill_vboot_handoff(vh, sd);
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/* Log the recovery mode switches if required, before clearing them. */
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log_recovery_mode_switch();
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/*
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* The recovery mode switch is cleared (typically backed by EC) here
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* to allow multiple queries to get_recovery_mode_switch() and have
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* them return consistent results during the verified boot path as well
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* as dram initialization. x86 systems ignore the saved dram settings
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* in the recovery path in order to start from a clean slate. Therefore
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* clear the state here since this function is called when memory
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* is known to be up.
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*/
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clear_recovery_mode_switch();
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}
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/*
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* For platforms that employ VBOOT_DYNAMIC_WORK_BUFFER, the vboot
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* verification doesn't happen until after cbmem is brought online.
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* Therefore, the vboot results would not be initialized so don't
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* automatically add results when cbmem comes online.
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*/
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#if !IS_ENABLED(CONFIG_VBOOT_DYNAMIC_WORK_BUFFER)
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static void vb2_fill_handoff_cbmem(int unused)
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{
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vboot_fill_handoff();
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}
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ROMSTAGE_CBMEM_INIT_HOOK(vb2_fill_handoff_cbmem)
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#endif
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