#include <device/device.h>
#include <device/pci.h>
#include <console/console.h>
#include <acpi/acpi.h>
#include <arch/io.h>
#include <device/pci_ops.h>
#include <cpu/x86/cache.h>
#include <cpu/x86/smm.h>
#include <cpu/x86/smi_deprecated.h>
#include <string.h>
#include "i82801dx.h"

Include dependency graph for smi.c:

Macros
#define	D_OPEN (1 << 6)

#define	D_CLS (1 << 5)

#define	D_LCK (1 << 4)

#define	G_SMRAME (1 << 3)

#define	C_BASE_SEG ((0 << 2) \| (1 << 1) \| (0 << 0))

Functions
void	northbridge_write_smram (u8 smram)

static u16	reset_pm1_status (void)
	read and clear PM1_STS More...

static void	dump_pm1_status (u16 pm1_sts)

static u32	reset_smi_status (void)
	read and clear SMI_STS More...

static void	dump_smi_status (u32 smi_sts)

static u32	reset_gpe0_status (void)
	read and clear GPE0_STS More...

static void	dump_gpe0_status (u32 gpe0_sts)

static u16	reset_alt_gp_smi_status (void)
	read and clear ALT_GP_SMI_STS More...

static void	dump_alt_gp_smi_status (u16 alt_gp_smi_sts)

static u32	reset_tco_status (void)
	read and clear TCOx_STS More...

static void	dump_tco_status (u32 tco_sts)

static void	smi_set_eos (void)
	Set the EOS bit. More...

static void	aseg_smm_relocate (void)

static void	aseg_smm_install (void)

void	smm_init (void)

void	smm_init_completion (void)

void	aseg_smm_lock (void)

Variables
static u16	pmbase = PMBASE_ADDR

uint8_t	smm_relocation_start

uint8_t	smm_relocation_end

static void *	default_smm_area = NULL

Macro Definition Documentation

◆ C_BASE_SEG

#define C_BASE_SEG ((0 << 2) | (1 << 1) | (0 << 0))

Definition at line 22 of file smi.c.

◆ D_CLS

#define D_CLS (1 << 5)

Definition at line 19 of file smi.c.

◆ D_LCK

#define D_LCK (1 << 4)

Definition at line 20 of file smi.c.

◆ D_OPEN

#define D_OPEN (1 << 6)

Definition at line 18 of file smi.c.

◆ G_SMRAME

#define G_SMRAME (1 << 3)

Definition at line 21 of file smi.c.

Function Documentation

◆ aseg_smm_install()

static void aseg_smm_install ( void )

static

Definition at line 290 of file smi.c.

References _binary_smm_end, _binary_smm_start, memcpy(), and wbinvd().

Referenced by smm_init().

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◆ aseg_smm_lock()

void aseg_smm_lock ( void )

Definition at line 315 of file smi.c.

◆ aseg_smm_relocate()

static void aseg_smm_relocate ( void )

static

There are several methods of raising a controlled SMI# via software, among them:

Writes to io 0xb2 (APMC)
Writes to the Local Apic ICR with Delivery mode SMI.

Using the local APIC is a bit more tricky. According to AMD Family 11 Processor BKDG no destination shorthand must be used. The whole SMM initialization is quite a bit hardware specific, so I'm not too worried about the better of the methods at the moment

Definition at line 215 of file smi.c.

References APM_CNT_NOOP_SMI, apm_control(), APMC_EN, backup_default_smm_area(), BIOS_DEBUG, BIOS_EN, BIOS_INFO, BIOS_SPEW, CONFIG, default_smm_area, dump_alt_gp_smi_status(), dump_gpe0_status(), dump_pm1_status(), dump_smi_status(), dump_tco_status(), EOS, GBL_EN, GBL_SMI_EN, inl(), memcpy(), outl(), outw(), pci_read_config16(), pcidev_on_root(), PERIODIC_EN, PM1_EN, pmbase, printk, PWRBTN_EN, reset_alt_gp_smi_status(), reset_gpe0_status(), reset_pm1_status(), reset_smi_status(), reset_tco_status(), SLP_SMI_EN, SMI_EN, smm_relocation_end, smm_relocation_start, TCO_EN, and wbinvd().