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/*
* tboot.h: shared data structure with MLE and kernel and functions
* used by kernel for runtime support
*
* Copyright (c) 2006-2007, Intel Corporation
* 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 the Intel Corporation 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.
*
*/
#ifndef __TBOOT_H__
#define __TBOOT_H__
#include <xen/acpi.h>
#ifndef __packed
#define __packed __attribute__ ((packed))
#endif
typedef struct __packed {
uint32_t data1;
uint16_t data2;
uint16_t data3;
uint16_t data4;
uint8_t data5[6];
} uuid_t;
/* used to communicate between tboot and the launched kernel (i.e. Xen) */
#define TB_KEY_SIZE 64 /* 512 bits */
#define MAX_TB_MAC_REGIONS 32
typedef struct __packed {
uint64_t start; /* must be 64 byte -aligned */
uint32_t size; /* must be 64 byte -granular */
} tboot_mac_region_t;
/* GAS - Generic Address Structure (ACPI 2.0+) */
typedef struct __packed {
uint8_t space_id;
uint8_t bit_width;
uint8_t bit_offset;
uint8_t access_width;
uint64_t address;
} tboot_acpi_generic_address_t;
typedef struct __packed {
tboot_acpi_generic_address_t pm1a_cnt_blk;
tboot_acpi_generic_address_t pm1b_cnt_blk;
tboot_acpi_generic_address_t pm1a_evt_blk;
tboot_acpi_generic_address_t pm1b_evt_blk;
uint16_t pm1a_cnt_val;
uint16_t pm1b_cnt_val;
uint64_t wakeup_vector;
uint32_t vector_width;
uint64_t kernel_s3_resume_vector;
} tboot_acpi_sleep_info_t;
typedef struct __packed {
/* version 3+ fields: */
uuid_t uuid; /* {663C8DFF-E8B3-4b82-AABF-19EA4D057A08} */
uint32_t version; /* Version number; currently supports 0.6 */
uint32_t log_addr; /* physical addr of tb_log_t log */
uint32_t shutdown_entry; /* entry point for tboot shutdown */
uint32_t shutdown_type; /* type of shutdown (TB_SHUTDOWN_*) */
tboot_acpi_sleep_info_t
acpi_sinfo; /* where kernel put acpi sleep info in Sx */
uint32_t tboot_base; /* starting addr for tboot */
uint32_t tboot_size; /* size of tboot */
uint8_t num_mac_regions; /* number mem regions to MAC on S3 */
/* contig regions memory to MAC on S3 */
tboot_mac_region_t mac_regions[MAX_TB_MAC_REGIONS];
/* version 4+ fields: */
/* populated by tboot; will be encrypted */
uint8_t s3_key[TB_KEY_SIZE];
/* version 5+ fields: */
uint8_t reserved_align[3]; /* used to 4byte-align num_in_wfs */
uint32_t num_in_wfs; /* number of processors in wait-for-SIPI */
/* version 6+ fields: */
uint32_t flags;
uint64_t ap_wake_addr; /* phys addr of kernel/VMM SIPI vector */
uint32_t ap_wake_trigger; /* kernel/VMM writes APIC ID to wake AP */
} tboot_shared_t;
#define TB_SHUTDOWN_REBOOT 0
#define TB_SHUTDOWN_S5 1
#define TB_SHUTDOWN_S4 2
#define TB_SHUTDOWN_S3 3
#define TB_SHUTDOWN_HALT 4
#define TB_FLAG_AP_WAKE_SUPPORT 0x00000001 /* kernel/VMM use INIT-SIPI-SIPI
if clear, ap_wake_* if set */
/* {663C8DFF-E8B3-4b82-AABF-19EA4D057A08} */
#define TBOOT_SHARED_UUID { 0x663c8dff, 0xe8b3, 0x4b82, 0xaabf, \
{ 0x19, 0xea, 0x4d, 0x5, 0x7a, 0x8 } };
extern tboot_shared_t *g_tboot_shared;
void tboot_probe(void);
void tboot_shutdown(uint32_t shutdown_type);
int tboot_in_measured_env(void);
int tboot_protect_mem_regions(void);
int tboot_parse_dmar_table(acpi_table_handler dmar_handler);
int tboot_s3_resume(void);
void tboot_s3_error(int error);
int tboot_wake_ap(int apicid, unsigned long sipi_vec);
#endif /* __TBOOT_H__ */
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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