getsec.c File Reference

#include <cf9_reset.h>
#include <console/console.h>
#include <cpu/intel/common/common.h>
#include <cpu/x86/cr.h>
#include <cpu/x86/cache.h>
#include <cpu/x86/mp.h>
#include <cpu/x86/msr.h>
#include <types.h>
#include "txt_register.h"
#include "txt_getsec.h"

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Functions
static bool	getsec_enabled (void)
	Check for SMX support and enable it if possible. More...
void	enable_getsec_or_reset (void)
bool	getsec_parameter (uint32_t *version_mask, uint32_t *version_numbers_supported, uint32_t *max_size_acm_area, uint32_t *memory_type_mask, uint32_t *senter_function_disable, uint32_t *txt_feature_flags)
	Get information as returned by getsec[PARAMETER]. More...
bool	getsec_capabilities (uint32_t *eax)
	Get capabilities as returned by getsec[CAPABILITIES]. More...

Function Documentation

enable_getsec_or_reset()

void enable_getsec_or_reset

(

void

)

Definition at line 56 of file getsec.c.

References BIOS_NOTICE, FEATURE_CONTROL_LOCK_BIT, full_reset(), IA32_FEATURE_CONTROL, msr_struct::lo, printk, rdmsr(), and wrmsr().

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getsec_capabilities()

bool getsec_capabilities

(

uint32_t *

eax

)

Get capabilities as returned by getsec[CAPABILITIES].

Returns false on error, true on success.

Definition at line 147 of file getsec.c.

References getsec_enabled(), and IA32_GETSEC_CAPABILITIES.

Referenced by intel_txt_prepare_txt_env(), and is_txt_chipset().

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getsec_enabled()

static bool getsec_enabled ( void  )

static

Check for SMX support and enable it if possible.

Returns false on error, true on success.

Definition at line 20 of file getsec.c.

References BIOS_ERR, cpuid_ecx(), CPUID_SMX, CPUID_VMX, CR4_SMXE, ENV_ROMSTAGE_OR_BEFORE, IA32_FEATURE_CONTROL, msr_struct::lo, printk, rdmsr(), read_cr4(), and write_cr4().

Referenced by getsec_capabilities(), and getsec_parameter().

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getsec_parameter()

bool getsec_parameter	(	uint32_t *	version_mask,
		uint32_t *	version_numbers_supported,
		uint32_t *	max_size_acm_area,
		uint32_t *	memory_type_mask,
		uint32_t *	senter_function_disable,
		uint32_t *	txt_feature_flags
	)

Get information as returned by getsec[PARAMETER].

Arguments can be set to NULL if not needed.

Returns false on error, true on success.

Definition at line 89 of file getsec.c.

References getsec_enabled(), and IA32_GETSEC_PARAMETERS.

Referenced by intel_txt_prepare_txt_env(), lockdown_intel_txt(), txt_dump_getsec_parameters(), and validate_acm().

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