Factor out verified boot required hardware interface

BUG=none
TEST=emerge-tegra2_seaboard chromeos-u-boot-next

Review URL: http://codereview.chromium.org/6543034

Change-Id: I88dfd38aedd81281415ecb8156181a6cc4d46495

2 files changed, 72 insertions, 0 deletions

diff --git a/include/chromeos/firmware_storage.h b/include/chromeos/firmware_storage.h
index 3f1081e0169..6ddd15145a6 100644
--- a/include/chromeos/firmware_storage.h
+++ b/include/chromeos/firmware_storage.h
@@ -41,6 +41,8 @@
 #ifndef __FIRMWARE_STORAGE_H__
 #define __FIRMWARE_STORAGE_H__
 
+#include <linux/types.h>
+
 enum whence_t { SEEK_SET, SEEK_CUR, SEEK_END };
 
 /* Internal data for caller of LoadFirmware() to talk to GetFirmwareBody() */
diff --git a/include/chromeos/hardware_interface.h b/include/chromeos/hardware_interface.h
new file mode 100644
index 00000000000..7793c6018e2
--- /dev/null
+++ b/include/chromeos/hardware_interface.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2011, Google Inc.
+ * 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 Google Inc. 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
+ * OWNER 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.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ */
+
+/*
+ * The minimal hardware interface for Chrome OS verified boot
+ */
+
+#ifndef __HARDWARE_INTERFACE_H__
+#define __HARDWARE_INTERFACE_H__
+
+int is_s3_resume(void);
+
+/* Accessor to non-volatile storage: returns 0 if false, nonzero if true */
+int is_debug_reset_mode_field_containing_cookie(void);
+int is_recovery_mode_field_containing_cookie(void);
+int is_try_firmware_b_field_containing_cookie(void);
+
+/* GPIO accessor functions: returns 0 if false, nonzero if true */
+int is_firmware_write_protect_gpio_asserted(void);
+int is_recovery_mode_gpio_asserted(void);
+int is_developer_mode_gpio_asserted(void);
+
+/* Returns 0 if success, nonzero if error. */
+int lock_down_eeprom(void);
+
+/* TPM driver functions: returns 0 if success, nonzero if error. */
+int initialize_tpm(void);
+int lock_tpm(void);
+int lock_tpm_rewritable_firmware_index(void);
+
+/* Interface for access firmware */
+#include <chromeos/firmware_storage.h>
+
+/* Returns 0 if success, nonzero if error. */
+int init_caller_internal(caller_internal_t *ci);
+int release_caller_internal(caller_internal_t *ci);
+
+#endif /* __HARDWARE_INTERFACE_H__ */