vboot2: translate shared data to hand off to depthcharge

TEST=Built Blaze with USE=+/-vboot2. Ran faft: CorruptBothFwAB,
CorruptBothFWSigAB, CorruptFwBodyA/B, CoccurptFwSigA/B, DevBootUSB, DevMode,
TryFwB, UserRequestRecovery, SelfSignedBoot, RollbackFirmware.
BUG=None
BRANCH=none
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>

Original-Change-Id: I45a1efd4d55fde37cc67fc02642fed0bc9366469
Original-Reviewed-on: https://chromium-review.googlesource.com/205236
Original-Reviewed-by: Randall Spangler <rspangler@chromium.org>
Original-Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org>
Original-Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
(cherry picked from commit 0a9e7f099251c33ce286fa8d704a3e021eac4d3e)

Change-Id: I5f61c03c66ca83a5837c14378905ba178aba5300
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8655
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>

4 files changed, 145 insertions, 0 deletions

diff --git a/src/vendorcode/google/chromeos/Makefile.inc b/src/vendorcode/google/chromeos/Makefile.inc
index c8781dd645..1fcb42e68b 100644
--- a/src/vendorcode/google/chromeos/Makefile.inc
+++ b/src/vendorcode/google/chromeos/Makefile.inc
@@ -102,6 +102,7 @@ INCLUDES += -I$(VB_SOURCE)/firmware/2lib/include
 INCLUDES += -I$(VB_SOURCE)/firmware/include
 verstage-y += vboot_main.c fmap.c chromeos.c
 verstage-y += antirollback.c vbnv_ec.c
+romstage-y += vboot_handoff.c
 
 VB_FIRMWARE_ARCH := $(ARCHDIR-$(ARCH-VERSTAGE-y))
 VB2_LIB = $(obj)/external/vboot_reference/vboot_fw2.a
diff --git a/src/vendorcode/google/chromeos/chromeos.h b/src/vendorcode/google/chromeos/chromeos.h
index a799528d53..724ff57893 100644
--- a/src/vendorcode/google/chromeos/chromeos.h
+++ b/src/vendorcode/google/chromeos/chromeos.h
@@ -88,6 +88,7 @@ static inline void chromeos_reserve_ram_oops(struct device *dev, int idx) {}
 
 #if CONFIG_VBOOT2_VERIFY_FIRMWARE
 void select_firmware(void);
+void vboot_create_handoff(void * vboot_workbuf);
 #endif
 
 #endif
diff --git a/src/vendorcode/google/chromeos/vboot_handoff.c b/src/vendorcode/google/chromeos/vboot_handoff.c
new file mode 100644
index 0000000000..3b276aac95
--- /dev/null
+++ b/src/vendorcode/google/chromeos/vboot_handoff.c
@@ -0,0 +1,142 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <2recovery_reasons.h>
+#include <2struct.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <string.h>
+#include <cbfs.h>
+#include <cbmem.h>
+#include <console/console.h>
+#include <console/vtxprintf.h>
+#include <stdlib.h>
+#include <timestamp.h>
+#include "chromeos.h"
+#include "fmap.h"
+#include "vboot_handoff.h"
+#include <vboot_struct.h>
+
+/**
+ * Sets vboot_handoff based on the information in vb2_shared_data
+ *
+ * TODO: Read wp switch to set VBSD_BOOT_FIRMWARE_WP_ENABLED
+ */
+static void fill_vboot_handoff(struct vboot_handoff *vboot_handoff,
+                               struct vb2_shared_data *vb2_sd)
+{
+	VbSharedDataHeader *vb_sd =
+		(VbSharedDataHeader *)vboot_handoff->shared_data;
+	uint32_t *oflags = &vboot_handoff->init_params.out_flags;
+
+	vb_sd->flags |= VBSD_BOOT_FIRMWARE_VBOOT2;
+
+	vboot_handoff->selected_firmware = vb2_sd->fw_slot;
+
+	/* TODO: fw_slot is never 0xff while firmware_index can. */
+	vb_sd->firmware_index = vb2_sd->fw_slot;
+
+	vb_sd->magic = VB_SHARED_DATA_MAGIC;
+	vb_sd->struct_version = VB_SHARED_DATA_VERSION;
+	vb_sd->struct_size = sizeof(VbSharedDataHeader);
+	vb_sd->data_size = VB_SHARED_DATA_MIN_SIZE;
+	vb_sd->data_used = sizeof(VbSharedDataHeader);
+
+	if (vb2_sd->recovery_reason) {
+		vb_sd->firmware_index = 0xFF;
+		if (vb2_sd->recovery_reason == VB2_RECOVERY_RO_MANUAL)
+                        vb_sd->flags |= VBSD_BOOT_REC_SWITCH_ON;
+		*oflags |= VB_INIT_OUT_ENABLE_RECOVERY;
+		*oflags |= VB_INIT_OUT_CLEAR_RAM;
+		*oflags |= VB_INIT_OUT_ENABLE_DISPLAY;
+		*oflags |= VB_INIT_OUT_ENABLE_USB_STORAGE;
+	}
+	if (vb2_sd->flags & VB2_SD_DEV_MODE_ENABLED) {
+		*oflags |= VB_INIT_OUT_ENABLE_DEVELOPER;
+		*oflags |= VB_INIT_OUT_CLEAR_RAM;
+		*oflags |= VB_INIT_OUT_ENABLE_DISPLAY;
+		*oflags |= VB_INIT_OUT_ENABLE_USB_STORAGE;
+		vb_sd->flags |= VBSD_BOOT_DEV_SWITCH_ON;
+		vb_sd->flags |= VBSD_LF_DEV_SWITCH_ON;
+	}
+	if (CONFIG_VIRTUAL_DEV_SWITCH)
+		vb_sd->flags |= VBSD_HONOR_VIRT_DEV_SWITCH;
+	if (CONFIG_EC_SOFTWARE_SYNC) {
+		vb_sd->flags |= VBSD_EC_SOFTWARE_SYNC;
+		vb_sd->flags |= VBSD_BOOT_REC_SWITCH_VIRTUAL;
+	}
+	/* In vboot1, VBSD_FWB_TRIED is
+	 * set only if B is booted as explicitly requested. Therefore, if B is
+	 * booted because A was found bad, the flag should not be set. It's
+	 * better not to touch it if we can only ambiguously control it. */
+	/* if (vb2_sd->fw_slot)
+		vb_sd->flags |= VBSD_FWB_TRIED; */
+
+	/* copy kernel subkey if it's found */
+	if (vb2_sd->workbuf_preamble_size) {
+		struct vb2_fw_preamble *fp;
+		uintptr_t dst, src;
+		printk(BIOS_ERR, "Copying FW preamble\n");
+		fp = (struct vb2_fw_preamble *)( (uintptr_t)vb2_sd +
+				vb2_sd->workbuf_preamble_offset);
+		src = (uintptr_t)&fp->kernel_subkey + fp->kernel_subkey.key_offset;
+		dst = (uintptr_t)vb_sd + sizeof(VbSharedDataHeader);
+		memcpy((void *)dst, (void *)src, fp->kernel_subkey.key_size);
+                vb_sd->data_used += fp->kernel_subkey.key_size;
+		vb_sd->kernel_subkey.key_offset =
+				dst - (uintptr_t)&vb_sd->kernel_subkey;
+		vb_sd->kernel_subkey.key_size = fp->kernel_subkey.key_size;
+		vb_sd->kernel_subkey.algorithm = fp->kernel_subkey.algorithm;
+		vb_sd->kernel_subkey.key_version = fp->kernel_subkey.key_version;
+	}
+
+	vb_sd->recovery_reason = vb2_sd->recovery_reason;
+}
+
+/**
+ * Create vboot handoff struct
+ *
+ *      struct vboot_handoff {
+ *              VbInitParams init_params;
+ *              uint32_t selected_firmware;
+ *              struct firmware_component components[MAX_PARSED_FW_COMPONENTS];
+ *              char shared_data[VB_SHARED_DATA_MIN_SIZE];
+ *      } __attribute__((packed));
+ */
+void vboot_create_handoff(void *vboot_workbuf)
+{
+	struct vboot_handoff *vh;
+	struct vb2_shared_data *sd;
+
+	sd = (struct vb2_shared_data *)vboot_workbuf;
+	sd->workbuf_hash_offset = 0;
+	sd->workbuf_hash_size = 0;
+
+	printk(BIOS_INFO, "Creating vboot_handoff structure\n");
+	vh = cbmem_add(CBMEM_ID_VBOOT_HANDOFF, sizeof(*vh));
+
+	if (vh == NULL) {
+		printk(BIOS_ERR, "Could not add vboot_handoff structure\n");
+		return;
+	}
+
+	memset(vh, 0, sizeof(*vh));
+
+	fill_vboot_handoff(vh, sd);
+}
diff --git a/src/vendorcode/google/chromeos/vboot_handoff.h b/src/vendorcode/google/chromeos/vboot_handoff.h
index 09c7897f54..e1e519f081 100644
--- a/src/vendorcode/google/chromeos/vboot_handoff.h
+++ b/src/vendorcode/google/chromeos/vboot_handoff.h
@@ -20,6 +20,7 @@
 #define VBOOT_HANDOFF_H
 
 #include <vboot_api.h>
+#include <vboot_struct.h>
 
 /*
  * The vboot handoff structure keeps track of a maximum number of firmware