3 files changed, 202 insertions, 1 deletions

diff --git a/arch/x86/include/asm/bootparam.h b/arch/x86/include/asm/bootparam.h
index 1724e8de317c..6ca20218dd72 100644
--- a/arch/x86/include/asm/bootparam.h
+++ b/arch/x86/include/asm/bootparam.h
@@ -85,7 +85,8 @@ struct efi_info {
 struct boot_params {
         struct screen_info screen_info;                 /* 0x000 */
         struct apm_bios_info apm_bios_info;             /* 0x040 */
-        __u8  _pad2[12];                                /* 0x054 */
+        __u8  _pad2[4];                                 /* 0x054 */
+        __u64  tboot_addr;                              /* 0x058 */
         struct ist_info ist_info;                       /* 0x060 */
         __u8  _pad3[16];                                /* 0x070 */
         __u8  hd0_info[16];     /* obsolete! */         /* 0x080 */
diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h
index 7b2d71df39a6..14f9890eb495 100644
--- a/arch/x86/include/asm/fixmap.h
+++ b/arch/x86/include/asm/fixmap.h
@@ -132,6 +132,9 @@ enum fixed_addresses {
 #ifdef CONFIG_X86_32
         FIX_WP_TEST,
 #endif
+#ifdef CONFIG_INTEL_TXT
+        FIX_TBOOT_BASE,
+#endif
         __end_of_fixed_addresses
 };
 
diff --git a/arch/x86/include/asm/tboot.h b/arch/x86/include/asm/tboot.h
new file mode 100644
index 000000000000..b13929d4e5f4
--- /dev/null
+++ b/arch/x86/include/asm/tboot.h
@@ -0,0 +1,197 @@
+/*
+ * tboot.h: shared data structure with tboot and kernel and functions
+ *          used by kernel for runtime support of Intel(R) Trusted
+ *          Execution Technology
+ *
+ * Copyright (c) 2006-2009, Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 _ASM_TBOOT_H
+#define _ASM_TBOOT_H
+
+#include <acpi/acpi.h>
+
+/* these must have the values from 0-5 in this order */
+enum {
+        TB_SHUTDOWN_REBOOT = 0,
+        TB_SHUTDOWN_S5,
+        TB_SHUTDOWN_S4,
+        TB_SHUTDOWN_S3,
+        TB_SHUTDOWN_HALT,
+        TB_SHUTDOWN_WFS
+};
+
+#ifdef CONFIG_INTEL_TXT
+
+/* used to communicate between tboot and the launched kernel */
+
+#define TB_KEY_SIZE             64   /* 512 bits */
+
+#define MAX_TB_MAC_REGIONS      32
+
+struct tboot_mac_region {
+        u64  start;         /* must be 64 byte -aligned */
+        u32  size;          /* must be 64 byte -granular */
+} __packed;
+
+/* GAS - Generic Address Structure (ACPI 2.0+) */
+struct tboot_acpi_generic_address {
+        u8  space_id;
+        u8  bit_width;
+        u8  bit_offset;
+        u8  access_width;
+        u64 address;
+} __packed;
+
+/*
+ * combines Sx info from FADT and FACS tables per ACPI 2.0+ spec
+ * (http://www.acpi.info/)
+ */
+struct tboot_acpi_sleep_info {
+        struct tboot_acpi_generic_address pm1a_cnt_blk;
+        struct tboot_acpi_generic_address pm1b_cnt_blk;
+        struct tboot_acpi_generic_address pm1a_evt_blk;
+        struct tboot_acpi_generic_address pm1b_evt_blk;
+        u16 pm1a_cnt_val;
+        u16 pm1b_cnt_val;
+        u64 wakeup_vector;
+        u32 vector_width;
+        u64 kernel_s3_resume_vector;
+} __packed;
+
+/*
+ * shared memory page used for communication between tboot and kernel
+ */
+struct tboot {
+        /*
+         * version 3+ fields:
+         */
+
+        /* TBOOT_UUID */
+        u8 uuid[16];
+
+        /* version number: 5 is current */
+        u32 version;
+
+        /* physical addr of tb_log_t log */
+        u32 log_addr;
+
+        /*
+         * physical addr of entry point for tboot shutdown and
+         * type of shutdown (TB_SHUTDOWN_*) being requested
+         */
+        u32 shutdown_entry;
+        u32 shutdown_type;
+
+        /* kernel-specified ACPI info for Sx shutdown */
+        struct tboot_acpi_sleep_info acpi_sinfo;
+
+        /* tboot location in memory (physical) */
+        u32 tboot_base;
+        u32 tboot_size;
+
+        /* memory regions (phys addrs) for tboot to MAC on S3 */
+        u8 num_mac_regions;
+        struct tboot_mac_region mac_regions[MAX_TB_MAC_REGIONS];
+
+
+        /*
+         * version 4+ fields:
+         */
+
+        /* symmetric key for use by kernel; will be encrypted on S3 */
+        u8 s3_key[TB_KEY_SIZE];
+
+
+        /*
+         * version 5+ fields:
+         */
+
+        /* used to 4byte-align num_in_wfs */
+        u8 reserved_align[3];
+
+        /* number of processors in wait-for-SIPI */
+        u32 num_in_wfs;
+} __packed;
+
+/*
+ * UUID for tboot data struct to facilitate matching
+ * defined as {663C8DFF-E8B3-4b82-AABF-19EA4D057A08} by tboot, which is
+ * represented as {} in the char array used here
+ */
+#define TBOOT_UUID      {0xff, 0x8d, 0x3c, 0x66, 0xb3, 0xe8, 0x82, 0x4b, 0xbf,\
+                         0xaa, 0x19, 0xea, 0x4d, 0x5, 0x7a, 0x8}
+
+extern struct tboot *tboot;
+
+static inline int tboot_enabled(void)
+{
+        return tboot != NULL;
+}
+
+extern void tboot_probe(void);
+extern void tboot_create_trampoline(void);
+extern void tboot_shutdown(u32 shutdown_type);
+extern void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control);
+extern int tboot_wait_for_aps(int num_aps);
+extern struct acpi_table_header *tboot_get_dmar_table(
+                                      struct acpi_table_header *dmar_tbl);
+extern int tboot_force_iommu(void);
+
+#else     /* CONFIG_INTEL_TXT */
+
+static inline int tboot_enabled(void)
+{
+        return 0;
+}
+
+static inline void tboot_probe(void)
+{
+}
+
+static inline void tboot_create_trampoline(void)
+{
+}
+
+static inline void tboot_shutdown(u32 shutdown_type)
+{
+}
+
+static inline void tboot_sleep(u8 sleep_state, u32 pm1a_control,
+                               u32 pm1b_control)
+{
+}
+
+static inline int tboot_wait_for_aps(int num_aps)
+{
+        return 0;
+}
+
+static inline struct acpi_table_header *tboot_get_dmar_table(
+                                        struct acpi_table_header *dmar_tbl)
+{
+        return dmar_tbl;
+}
+
+static inline int tboot_force_iommu(void)
+{
+        return 0;
+}
+
+#endif /* !CONFIG_INTEL_TXT */
+
+#endif /* _ASM_TBOOT_H */