arm64: Add support for using ARM Trusted Firmware as secure monitor

This patch adds support for integrating the runtime-resident component
of ARM Trusted Firmware (github.com/ARM-software/arm-trusted-firmware)
called BL31. It expects the ARM TF source tree to be checked out under
$(top)/3rdparty/arm-trusted-firmware, which will be set up in a later
patch.

Also include optional support for VBOOT2 verification (pretty hacky for
now, since CBFSv1 is just around the corner and will make all this so
much better).

BRANCH=None
BUG=None
TEST=Booted Oak with ARM TF and working PSCI (with additional platform
patches).

Change-Id: I8c923226135bdf88a9a30a7f5ff163510c35608d
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: a1b3b2d56b25bfc1f3b2d19bf7876205075a987a
Original-Change-Id: I0714cc10b5b10779af53ecbe711ceeb89fb30da2
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/270784
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10249
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

2 files changed, 141 insertions, 0 deletions

diff --git a/src/arch/arm64/include/arm_tf.h b/src/arch/arm64/include/arm_tf.h
new file mode 100644
index 0000000000..af74c81b9e
--- /dev/null
+++ b/src/arch/arm64/include/arm_tf.h
@@ -0,0 +1,34 @@
+/*
+ * 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.
+ *
+ * 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
+ */
+
+#ifndef __ARM_TF_H__
+#define __ARM_TF_H__
+
+#include <types.h>
+
+/* TODO: Pull in directly from ARM TF once its headers have been reorganized. */
+#include <arm_tf_temp.h>
+
+/* Load and enter BL31, set it up to exit to payload according to arguments. */
+void arm_tf_run_bl31(u64 payload_entry, u64 payload_arg0, u64 payload_spsr);
+
+/* Return platform-specific bl31_plat_params. May update bl31_params. */
+void *soc_get_bl31_plat_params(bl31_params_t *bl31_params);
+
+#endif /* __ARM_TF_H__ */
diff --git a/src/arch/arm64/include/arm_tf_temp.h b/src/arch/arm64/include/arm_tf_temp.h
new file mode 100644
index 0000000000..c9fe8c15f9
--- /dev/null
+++ b/src/arch/arm64/include/arm_tf_temp.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __ARM_TF_TEMP_H__
+#define __ARM_TF_TEMP_H__
+
+#include <types.h>
+
+/*
+ * Code temporarily copied from arm-trusted-firmware/include/common/bl_common.h,
+ * since it tries to pull in a few too many standard C headers and needs to be
+ * cleaned up a bit before we can include it directly.
+ */
+
+#define PARAM_EP_SECURE		0x0
+#define PARAM_EP_NON_SECURE	0x1
+#define PARAM_EP_SECURITY_MASK	0x1
+
+#define PARAM_EP_EE_MASK	0x2
+#define PARAM_EP_EE_LITTLE	0x0
+#define PARAM_EP_EE_BIG		0x2
+
+#define PARAM_EP_ST_MASK	0x4
+#define PARAM_EP_ST_DISABLE	0x0
+#define PARAM_EP_ST_ENABLE	0x4
+
+#define PARAM_EP		0x01
+#define PARAM_IMAGE_BINARY	0x02
+#define PARAM_BL31		0x03
+
+#define VERSION_1		0x01
+
+#define SET_PARAM_HEAD(_p, _type, _ver, _attr) do { \
+	(_p)->h.type = (uint8_t)(_type); \
+	(_p)->h.version = (uint8_t)(_ver); \
+	(_p)->h.size = (uint16_t)sizeof(*_p); \
+	(_p)->h.attr = (uint32_t)(_attr) ; \
+	} while (0)
+
+typedef struct aapcs64_params {
+	unsigned long arg0;
+	unsigned long arg1;
+	unsigned long arg2;
+	unsigned long arg3;
+	unsigned long arg4;
+	unsigned long arg5;
+	unsigned long arg6;
+	unsigned long arg7;
+} aapcs64_params_t;
+
+typedef struct param_header {
+	uint8_t type;		/* type of the structure */
+	uint8_t version;    /* version of this structure */
+	uint16_t size;      /* size of this structure in bytes */
+	uint32_t attr;      /* attributes: unused bits SBZ */
+} param_header_t;
+
+typedef struct entry_point_info {
+	param_header_t h;
+	uintptr_t pc;
+	uint32_t spsr;
+	aapcs64_params_t args;
+} entry_point_info_t;
+
+typedef struct image_info {
+	param_header_t h;
+	uintptr_t image_base;   /* physical address of base of image */
+	uint32_t image_size;    /* bytes read from image file */
+} image_info_t;
+
+typedef struct bl31_params {
+	param_header_t h;
+	image_info_t *bl31_image_info;
+	entry_point_info_t *bl32_ep_info;
+	image_info_t *bl32_image_info;
+	entry_point_info_t *bl33_ep_info;
+	image_info_t *bl33_image_info;
+} bl31_params_t;
+
+#endif /* __ARM_TF_H__ */