#include <console/console.h>
#include <cpu/x86/cr.h>
#include <cpu/x86/mp.h>
#include <cpu/x86/msr.h>
#include <cpu/x86/cache.h>
#include <security/intel/stm/SmmStm.h>
#include <stdbool.h>
#include <string.h>

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Data Structures
struct	VMX_BASIC_MSR_BITS

union	VMX_BASIC_MSR

struct	SMM_MONITOR_CTL_MSR_BITS

struct	mp_state

union	SMM_MONITOR_CTL_MSR

Macros
#define	TXT_EVTYPE_BASE 0x400

#define	TXT_EVTYPE_STM_HASH (TXT_EVTYPE_BASE + 14)

#define	RDWR_ACCS 3

#define	FULL_ACCS 7

#define	SIZE_4KB 0x00001000

#define	SIZE_4MB 0x00400000

#define	PTP_SIZE SIZE_4KB

#define	IA32_PG_P (1 << 0)

#define	IA32_PG_RW (1 << 1)

#define	IA32_PG_PS (1 << 7)

#define	STM_PAGE_SHIFT 12

#define	STM_PAGE_MASK 0xFFF

#define	STM_SIZE_TO_PAGES(a) (((a) >> STM_PAGE_SHIFT) + (((a)&STM_PAGE_MASK) ? 1 : 0))

#define	STM_PAGES_TO_SIZE(a) ((a) << STM_PAGE_SHIFT)

#define	STM_ACCESS_DENIED 15

#define	STM_UNSUPPORTED 3

#define	STM_BUFFER_TOO_SMALL 1

#define	STM_SM_MONITOR_STATE_ENABLED 1

Functions
static bool	handle_single_resource (STM_RSC resource, STM_RSC record)

static void	add_single_resource (STM_RSC *resource)

static void	add_resource (STM_RSC *resource_list, uint32_t num_entries)

static bool	validate_resource (STM_RSC *resource_list, uint32_t num_entries)

static uint32_t	get_resource_size (STM_RSC *resource_list, uint32_t num_entries)

int	add_pi_resource (STM_RSC *resource_list, uint32_t num_entries)

int32_t	delete_pi_resource (STM_RSC *resource_list, uint32_t num_entries)

int32_t	get_pi_resource (STM_RSC resource_list, uint32_t resource_size)

static uint32_t	get_vmcs_size (void)

void	stm_gen_4g_pagetable_x64 (uint32_t pagetable_base)

bool	stm_check_stm_image (void *stm_image, uint32_t stm_imagesize)

void *	get_stm_resource (void)

Variables
struct mp_state	mp_state

STM_RSC_END	m_rsc_end_node

uint8_t *	m_stm_resources_ptr = NULL

uint32_t	m_stm_resource_total_size = 0x0

uint32_t	m_stm_resource_size_used = 0x0

uint32_t	m_stm_resource_size_available = 0x0

uint8_t *	stm_resource_heap = NULL

uint32_t	m_stm_state = 0

Macro Definition Documentation

◆ FULL_ACCS

#define FULL_ACCS 7

Definition at line 16 of file SmmStm.c.

◆ IA32_PG_P

#define IA32_PG_P (1 << 0)

Definition at line 23 of file SmmStm.c.

◆ IA32_PG_PS

#define IA32_PG_PS (1 << 7)

Definition at line 25 of file SmmStm.c.

◆ IA32_PG_RW

#define IA32_PG_RW (1 << 1)

Definition at line 24 of file SmmStm.c.

◆ PTP_SIZE

#define PTP_SIZE SIZE_4KB

Definition at line 21 of file SmmStm.c.

◆ RDWR_ACCS

#define RDWR_ACCS 3

Definition at line 15 of file SmmStm.c.

◆ SIZE_4KB

#define SIZE_4KB 0x00001000

Definition at line 18 of file SmmStm.c.

◆ SIZE_4MB

#define SIZE_4MB 0x00400000

Definition at line 19 of file SmmStm.c.

◆ STM_ACCESS_DENIED

#define STM_ACCESS_DENIED 15

Definition at line 33 of file SmmStm.c.

◆ STM_BUFFER_TOO_SMALL

#define STM_BUFFER_TOO_SMALL 1

Definition at line 36 of file SmmStm.c.

◆ STM_PAGE_MASK

#define STM_PAGE_MASK 0xFFF

Definition at line 28 of file SmmStm.c.

◆ STM_PAGE_SHIFT

#define STM_PAGE_SHIFT 12

Definition at line 27 of file SmmStm.c.

◆ STM_PAGES_TO_SIZE

#define STM_PAGES_TO_SIZE ( a ) ((a) << STM_PAGE_SHIFT)

Definition at line 31 of file SmmStm.c.

◆ STM_SIZE_TO_PAGES

#define STM_SIZE_TO_PAGES ( a ) (((a) >> STM_PAGE_SHIFT) + (((a)&STM_PAGE_MASK) ? 1 : 0))

Definition at line 29 of file SmmStm.c.

◆ STM_SM_MONITOR_STATE_ENABLED

#define STM_SM_MONITOR_STATE_ENABLED 1

Definition at line 38 of file SmmStm.c.

◆ STM_UNSUPPORTED

#define STM_UNSUPPORTED 3

Definition at line 34 of file SmmStm.c.

◆ TXT_EVTYPE_BASE

#define TXT_EVTYPE_BASE 0x400

Definition at line 12 of file SmmStm.c.

◆ TXT_EVTYPE_STM_HASH

#define TXT_EVTYPE_STM_HASH (TXT_EVTYPE_BASE + 14)

Definition at line 13 of file SmmStm.c.

Function Documentation

◆ add_pi_resource()

int add_pi_resource	(	STM_RSC *	resource_list,
		uint32_t	num_entries
	)

Definition at line 470 of file SmmStm.c.

References add_resource(), BIOS_DEBUG, get_resource_size(), m_rsc_end_node, m_stm_resource_size_available, m_stm_resource_size_used, m_stm_resource_total_size, m_stm_resources_ptr, memcpy(), memset(), NULL, printk, stm_resource_heap, validate_resource(), and wbinvd().

Referenced by add_msr_resources(), and add_simple_resources().

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◆ add_resource()

static void add_resource	(	STM_RSC *	resource_list,
		uint32_t	num_entries
	)

static

Definition at line 276 of file SmmStm.c.

References add_single_resource(), count, and END_OF_RESOURCES.

Referenced by add_pi_resource().

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◆ add_single_resource()

static void add_single_resource ( STM_RSC * resource )

static

Definition at line 234 of file SmmStm.c.

References END_OF_RESOURCES, handle_single_resource(), STM_RSC::header, STM_RSC_DESC_HEADER::length, m_rsc_end_node, m_stm_resource_size_available, m_stm_resource_size_used, m_stm_resource_total_size, m_stm_resources_ptr, memcpy(), and STM_RSC_DESC_HEADER::rsc_type.

Referenced by add_resource().

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◆ delete_pi_resource()

int32_t delete_pi_resource	(	STM_RSC *	resource_list,
		uint32_t	num_entries
	)

Definition at line 523 of file SmmStm.c.

References m_rsc_end_node, m_stm_resource_size_available, m_stm_resource_size_used, m_stm_resource_total_size, m_stm_resources_ptr, memcpy(), and NULL.

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◆ get_pi_resource()

int32_t get_pi_resource	(	STM_RSC *	resource_list,
		uint32_t *	resource_size
	)

Definition at line 551 of file SmmStm.c.

References m_stm_resource_size_used, m_stm_resources_ptr, and memcpy().

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◆ get_resource_size()

static uint32_t get_resource_size	(	STM_RSC *	resource_list,
		uint32_t	num_entries
	)

static

Definition at line 431 of file SmmStm.c.

References count, and END_OF_RESOURCES.

Referenced by add_pi_resource().

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◆ get_stm_resource()

void* get_stm_resource ( void )

Definition at line 675 of file SmmStm.c.

References m_stm_resources_ptr.

Referenced by setup_smm_descriptor().

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◆ get_vmcs_size()

static uint32_t get_vmcs_size ( void )

static

Definition at line 567 of file SmmStm.c.

References BIOS_DEBUG, VMX_BASIC_MSR::bits, IA32_VMX_BASIC_MSR, VMX_BASIC_MSR::msr, printk, rdmsr(), STM_PAGES_TO_SIZE, STM_SIZE_TO_PAGES, VMX_BASIC_MSR_BITS::stm_supported, and VMX_BASIC_MSR_BITS::vmcs_size.

Referenced by stm_check_stm_image().

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◆ handle_single_resource()

static bool handle_single_resource	(	STM_RSC *	resource,
		STM_RSC *	record
	)

static

Definition at line 109 of file SmmStm.c.

References resource::base, STM_RSC_MEM_DESC::base, STM_RSC_IO_DESC::base, STM_RSC_PCI_CFG_DESC::base, STM_RSC::io, IO_RANGE, STM_RSC_PCI_CFG_DESC::last_node_index, STM_RSC_MEM_DESC::length, STM_RSC_IO_DESC::length, STM_RSC_PCI_CFG_DESC::length, MACHINE_SPECIFIC_REG, STM_RSC::mem, MEM_RANGE, memcmp(), MMIO_RANGE, STM_RSC::msr, STM_RSC_MSR_DESC::msr_index, STM_RSC_PCI_CFG_DESC::originating_bus_number, STM_RSC::pci_cfg, PCI_CFG_RANGE, STM_RSC_PCI_CFG_DESC::pci_device_path, STM_RSC_MSR_DESC::read_mask, STM_RSC_PCI_CFG_DESC::rw_attributes, STM_RSC_MEM_DESC::rwx_attributes, TRAPPED_IO_RANGE, and STM_RSC_MSR_DESC::write_mask.

Referenced by add_single_resource().

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◆ stm_check_stm_image()

bool stm_check_stm_image	(	void *	stm_image,
		uint32_t	stm_imagesize
	)

Definition at line 632 of file SmmStm.c.

References SOFTWARE_STM_HEADER::additional_dynamic_memory_size, mp_state::cpu_count, HARDWARE_STM_HEADER::cr3_offset, get_vmcs_size(), STM_HEADER::hw_stm_hdr, SOFTWARE_STM_HEADER::per_proc_dynamic_memory_size, SOFTWARE_STM_HEADER::static_image_size, STM_PAGES_TO_SIZE, STM_SIZE_TO_PAGES, and STM_HEADER::sw_stm_hdr.

Referenced by load_stm_image().

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◆ stm_gen_4g_pagetable_x64()

void stm_gen_4g_pagetable_x64 ( uint32_t pagetable_base )

Definition at line 592 of file SmmStm.c.

References IA32_PG_P, IA32_PG_PS, IA32_PG_RW, PTP_SIZE, and SIZE_4KB.

Referenced by load_stm_image().

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◆ validate_resource()

static bool validate_resource	(	STM_RSC *	resource_list,
		uint32_t	num_entries
	)

static

Definition at line 308 of file SmmStm.c.

References resource::base, BIOS_DEBUG, count, END_OF_RESOURCES, FULL_ACCS, IO_RANGE, MACHINE_SPECIFIC_REG, MEM_RANGE, MMIO_RANGE, PCI_CFG_RANGE, printk, and TRAPPED_IO_RANGE.

Referenced by add_pi_resource().

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Variable Documentation

◆ m_rsc_end_node

STM_RSC_END m_rsc_end_node

Initial value:

= {
        {END_OF_RESOURCES, sizeof(STM_RSC_END)},
}

Definition at line 86 of file SmmStm.c.

Referenced by add_pi_resource(), add_single_resource(), and delete_pi_resource().

◆ m_stm_resource_size_available

uint32_t m_stm_resource_size_available = 0x0

Definition at line 93 of file SmmStm.c.

Referenced by add_pi_resource(), add_single_resource(), and delete_pi_resource().

◆ m_stm_resource_size_used

uint32_t m_stm_resource_size_used = 0x0

Definition at line 92 of file SmmStm.c.

Referenced by add_pi_resource(), add_single_resource(), delete_pi_resource(), and get_pi_resource().

◆ m_stm_resource_total_size

uint32_t m_stm_resource_total_size = 0x0

Definition at line 91 of file SmmStm.c.

Referenced by add_pi_resource(), add_single_resource(), and delete_pi_resource().

◆ m_stm_resources_ptr

uint8_t* m_stm_resources_ptr = NULL

Definition at line 90 of file SmmStm.c.

Referenced by add_pi_resource(), add_resources_cmd(), add_single_resource(), delete_pi_resource(), get_pi_resource(), and get_stm_resource().

◆ m_stm_state

uint32_t m_stm_state = 0

Definition at line 97 of file SmmStm.c.

◆ mp_state

struct mp_state mp_state

◆ stm_resource_heap

uint8_t* stm_resource_heap = NULL

Definition at line 95 of file SmmStm.c.

Referenced by add_pi_resource(), and stm_setup().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ FULL_ACCS

◆ IA32_PG_P

◆ IA32_PG_PS

◆ IA32_PG_RW

◆ PTP_SIZE

◆ RDWR_ACCS

◆ SIZE_4KB

◆ SIZE_4MB

◆ STM_ACCESS_DENIED

◆ STM_BUFFER_TOO_SMALL

◆ STM_PAGE_MASK

◆ STM_PAGE_SHIFT

◆ STM_PAGES_TO_SIZE

◆ STM_SIZE_TO_PAGES

◆ STM_SM_MONITOR_STATE_ENABLED

◆ STM_UNSUPPORTED

◆ TXT_EVTYPE_BASE

◆ TXT_EVTYPE_STM_HASH

Function Documentation

◆ add_pi_resource()

◆ add_resource()

◆ add_single_resource()

◆ delete_pi_resource()

◆ get_pi_resource()

◆ get_resource_size()

◆ get_stm_resource()

◆ get_vmcs_size()

◆ handle_single_resource()

◆ stm_check_stm_image()

◆ stm_gen_4g_pagetable_x64()

◆ validate_resource()

Variable Documentation

◆ m_rsc_end_node

◆ m_stm_resource_size_available

◆ m_stm_resource_size_used

◆ m_stm_resource_total_size

◆ m_stm_resources_ptr

◆ m_stm_state

◆ mp_state

◆ stm_resource_heap