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/* @file
* SMM STM support
*
* Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.
* This program and the accompanying materials are licensed and made
* available under the terms and conditions of the BSD License which
* accompanies this distribution. The full text of the license may
* be found at http://opensource.org/licenses/bsd-license.php.
*
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED
*
*/
#ifndef _SMM_STM_H_
#define _SMM_STM_H_
#include <cpu/x86/msr.h>
#include "StmApi.h"
/*
* Load STM image.
*
* @retval SUCCESS STM is loaded to MSEG
* @retval BUFFER_TOO_SMALL MSEG is too small
* @retval UNSUPPORTED MSEG is not enabled
*/
int load_stm_image(uintptr_t mseg);
void stm_setup(
uintptr_t mseg, int cpu, int num_cpus, uintptr_t smbase,
uintptr_t smbase_base, uint32_t offset32);
/*
* Add resources in list to database. Allocate new memory areas as needed.
*
* @param resource_list A pointer to resource list to be added
* @param num_entries Optional number of entries.
* If 0, list must be terminated by END_OF_RESOURCES.
*
* @retval SUCCESS If resources are added
* @retval INVALID_PARAMETER If nested procedure detected resource failure
* @retval OUT_OF_RESOURCES If nested procedure returned it and we cannot
* allocate more areas.
*/
int add_pi_resource(STM_RSC *resource_list, uint32_t num_entries);
/*
* Delete resources in list to database.
*
* @param resource_list A pointer to resource list to be deleted
* NULL means delete all resources.
* @param num_entries Optional number of entries.
* If 0, list must be terminated by END_OF_RESOURCES.
*
* @retval SUCCESS If resources are deleted
* @retval NVALID_PARAMETER If nested procedure detected resource fail
*/
int delete_pi_resource(STM_RSC *resource_list, uint32_t num_entries);
/*
* Get BIOS resources.
*
* @param resource_list A pointer to resource list to be filled
* @param resource_size On input it means size of resource list input.
* On output it means size of resource list filled,
* or the size of resource list to be filled if
* size is too small.
*
* @retval SUCCESS If resources are returned.
* @retval BUFFER_TOO_SMALL If resource list buffer is too small to
* hold the whole resources.
*/
int get_pi_resource(STM_RSC *resource_list, uint32_t *resource_size);
/*
* This function notifies the STM of a resource change.
*
* @param stm_resource BIOS STM resource
*/
void notify_stm_resource_change(void *stm_resource);
/*
* This function returns the pointer to the STM BIOS resource list.
*
* @return BIOS STM resource
*/
void *get_stm_resource(void);
void setup_smm_descriptor(void *smbase, void *base_smbase, int32_t apic_id,
int32_t entry32_off);
/*
* Check STM image size.
*
* @param stm_image STM image
* @param stm_image_size STM image size
*
* @retval true check pass
* @retval false check fail
*/
bool stm_check_stm_image(void *stm_image, uint32_t stm_image_size);
/*
* Create 4G page table for STM.
* 4M Non-PAE page table in IA32 version.
*
* @param page_table_base The page table base in MSEG
*/
void stm_gen_4g_pagetable_ia32(uint32_t pagetable_base);
/*
* Create 4G page table for STM.
* 2M PAE page table in X64 version.
*
* @param pagetable_base The page table base in MSEG
*/
void stm_gen_4g_pagetable_x64(uint32_t pagetable_base);
#endif
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