smm_module_handler.c File Reference

#include <arch/io.h>
#include <console/cbmem_console.h>
#include <console/console.h>
#include <commonlib/region.h>
#include <cpu/x86/smm.h>
#include <rmodule.h>

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Enumerations
enum	smi_semaphore { SMI_LOCKED , SMI_UNLOCKED , SMI_LOCKED , SMI_UNLOCKED }

Functions
static const volatile	__attribute ((aligned(4), __section__(".module_parameters")))
static void	smi_release_lock (void)
void	smm_get_cbmemc_buffer (void **buffer_out, size_t *size_out)
void	io_trap_handler (int smif)
static void	smi_set_eos (void)
	Set the EOS bit. More...
static void	smi_backup_pci_address (void)
	Backup PCI address to make sure we do not mess up the OS. More...
static void	smi_restore_pci_address (void)
	Restore PCI address previously backed up. More...
void *	smm_get_save_state (int cpu)
uint32_t	smm_revision (void)
bool	smm_region_overlaps_handler (const struct region *r)
asmlinkage void	smm_handler_start (void *arg)
	RMODULE_ENTRY (smm_handler_start)
int __weak	mainboard_io_trap_handler (int smif)
void __weak	cpu_smi_handler (void)
void __weak	northbridge_smi_handler (void)
void __weak	southbridge_smi_handler (void)
void __weak	mainboard_smi_gpi (u32 gpi_sts)
int __weak	mainboard_smi_apmc (u8 data)
void __weak	mainboard_smi_sleep (u8 slp_typ)
void __weak	mainboard_smi_finalize (void)
void __weak	smm_soc_early_init (void)
void __weak	smm_soc_exit (void)

Variables
static int	do_driver_init = 1
static volatile smi_semaphore	smi_handler_status = SMI_UNLOCKED
static u32	pci_orig
struct global_nvs *	gnvs

Enumeration Type Documentation

smi_semaphore

enum smi_semaphore

Enumerator
SMI_LOCKED
SMI_UNLOCKED
SMI_LOCKED
SMI_UNLOCKED

Definition at line 16 of file smm_module_handler.c.

Function Documentation

__attribute()

static const volatile __attribute ( (aligned(4), __section__(".module_parameters"))  )

static

Definition at line 23 of file smm_module_handler.c.

References smi_handler_status, SMI_LOCKED, and SMI_UNLOCKED.

cpu_smi_handler()

void __weak cpu_smi_handler

(

void

)

Definition at line 206 of file smm_module_handler.c.

Referenced by smm_handler_start().

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io_trap_handler()

void io_trap_handler

(

int

smif

)

Definition at line 58 of file smm_module_handler.c.

References BIOS_DEBUG, mainboard_io_trap_handler(), printk, and southbridge_io_trap_handler().

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mainboard_io_trap_handler()

int __weak mainboard_io_trap_handler

(

int

smif

)

Definition at line 205 of file smm_module_handler.c.

Referenced by io_trap_handler().

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mainboard_smi_apmc()

int __weak mainboard_smi_apmc

(

u8

data

)

Definition at line 210 of file smm_module_handler.c.

mainboard_smi_finalize()

void __weak mainboard_smi_finalize

(

void

)

Definition at line 212 of file smm_module_handler.c.

mainboard_smi_gpi()

void __weak mainboard_smi_gpi

(

u32

gpi_sts

)

Definition at line 209 of file smm_module_handler.c.

mainboard_smi_sleep()

void __weak mainboard_smi_sleep

(

u8

slp_typ

)

Definition at line 211 of file smm_module_handler.c.

northbridge_smi_handler()

void __weak northbridge_smi_handler

(

void

)

Definition at line 207 of file smm_module_handler.c.

Referenced by smm_handler_start().

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RMODULE_ENTRY()

RMODULE_ENTRY

(

smm_handler_start

)

smi_backup_pci_address()

static void smi_backup_pci_address ( void  )

static

Backup PCI address to make sure we do not mess up the OS.

Definition at line 87 of file smm_module_handler.c.

References inl(), and pci_orig.

Referenced by smm_handler_start().

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smi_release_lock()

static void smi_release_lock ( void  )

static

Definition at line 41 of file smm_module_handler.c.

References smi_handler_status, and SMI_UNLOCKED.

Referenced by smm_handler_start().

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smi_restore_pci_address()

static void smi_restore_pci_address ( void  )

static

Restore PCI address previously backed up.

Definition at line 95 of file smm_module_handler.c.

References outl(), and pci_orig.

Referenced by smm_handler_start().

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smi_set_eos()

static void smi_set_eos ( void  )

static

Set the EOS bit.

Definition at line 77 of file smm_module_handler.c.

References southbridge_smi_set_eos().

Referenced by smm_handler_start().

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smm_get_cbmemc_buffer()

void smm_get_cbmemc_buffer	(	void **	buffer_out,
		size_t *	size_out
	)

Definition at line 52 of file smm_module_handler.c.

References smm_runtime::cbmemc, and smm_runtime::cbmemc_size.

Referenced by cbmemc_init().

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smm_get_save_state()

void* smm_get_save_state

(

int

cpu

)

Definition at line 102 of file smm_module_handler.c.

References NULL, smm_runtime::num_cpus, smm_runtime::save_state_size, and smm_runtime::save_state_top.

Referenced by smm_revision().

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smm_handler_start()

asmlinkage void smm_handler_start

(

void *

arg

)

Definition at line 126 of file smm_module_handler.c.

References arg, BIOS_DEBUG, BIOS_SPEW, smm_module_params::canary, CONFIG, console_init(), smm_module_params::cpu, cpu_smi_handler(), DEBUG_SMI, die(), do_driver_init, gnvs, smm_runtime::gnvs_ptr, northbridge_smi_handler(), printk, smi_backup_pci_address(), smi_handler_status, SMI_LOCKED, smi_obtain_lock(), smi_release_lock(), smi_restore_pci_address(), smi_set_eos(), smm_soc_early_init(), smm_soc_exit(), southbridge_smi_handler(), and spi_init().

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smm_region_overlaps_handler()

bool smm_region_overlaps_handler

(

const struct region *

r

)

Definition at line 118 of file smm_module_handler.c.

References region_overlap(), smm_runtime::smbase, SMM_BASE, SMM_DEFAULT_SIZE, and smm_runtime::smm_size.

Referenced by smm_points_to_smram().

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smm_revision()

uint32_t smm_revision

(

void

)

Definition at line 110 of file smm_module_handler.c.

References save_state, smm_runtime::save_state_size, smm_get_save_state(), and SMM_REVISION_OFFSET_FROM_TOP.

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smm_soc_early_init()

void __weak smm_soc_early_init

(

void

)

Definition at line 214 of file smm_module_handler.c.

Referenced by smm_handler_start().

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smm_soc_exit()

void __weak smm_soc_exit

(

void

)

Definition at line 215 of file smm_module_handler.c.

Referenced by smm_handler_start().

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southbridge_smi_handler()

void __weak southbridge_smi_handler

(

void

)

Definition at line 208 of file smm_module_handler.c.

Referenced by smm_handler_start().

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Variable Documentation

do_driver_init

int do_driver_init = 1

static

Definition at line 14 of file smm_module_handler.c.

Referenced by smm_handler_start().

gnvs

struct global_nvs* gnvs

Definition at line 100 of file smm_module_handler.c.

Referenced by acpi_create_serialio_ssdt(), acpi_create_serialio_ssdt_entry(), acpi_get_device_nvs(), acpi_save_wake_source(), ec_smi_handler(), fch_final(), handle_acpi_osys(), hest_create(), hest_get_elog_addr(), mainboard_fill_gnvs(), mainboard_io_trap_handler(), mainboard_smi_apmc(), mainboard_smi_sleep(), nhlt_soc_serialize_oem_overrides(), pm_fill_gnvs(), sa_fill_gnvs(), set_sb_gnvs(), smihandler_southbridge_monitor(), smihandler_southbridge_sleep(), smm_handler_start(), soc_fill_gnvs(), southbridge_io_trap_handler(), southbridge_smi_monitor(), and update_bars().

pci_orig

u32 pci_orig

static

Definition at line 82 of file smm_module_handler.c.

Referenced by smi_backup_pci_address(), and smi_restore_pci_address().

smi_handler_status

volatile smi_semaphore smi_handler_status = SMI_UNLOCKED

static

Definition at line 20 of file smm_module_handler.c.

Referenced by __attribute(), smi_release_lock(), and smm_handler_start().