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/** @file
API for SMBIOS table.
Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "UefiShellDebug1CommandsLib.h"
#include <Guid/SmBios.h>
#include "LibSmbiosView.h"
#include "SmbiosView.h"
STATIC UINT8 mInit = 0;
STATIC UINT8 m64Init = 0;
STATIC SMBIOS_TABLE_ENTRY_POINT *mSmbiosTable = NULL;
STATIC SMBIOS_TABLE_3_0_ENTRY_POINT *mSmbios64BitTable = NULL;
STATIC SMBIOS_STRUCTURE_POINTER m_SmbiosStruct;
STATIC SMBIOS_STRUCTURE_POINTER *mSmbiosStruct = &m_SmbiosStruct;
STATIC SMBIOS_STRUCTURE_POINTER m_Smbios64BitStruct;
STATIC SMBIOS_STRUCTURE_POINTER *mSmbios64BitStruct = &m_Smbios64BitStruct;
/**
Init the SMBIOS VIEW API's environment.
@retval EFI_SUCCESS Successful to init the SMBIOS VIEW Lib.
**/
EFI_STATUS
LibSmbiosInit (
VOID
)
{
EFI_STATUS Status;
//
// Init only once
//
if (mInit == 1) {
return EFI_SUCCESS;
}
//
// Get SMBIOS table from System Configure table
//
Status = GetSystemConfigurationTable (&gEfiSmbiosTableGuid, (VOID **)&mSmbiosTable);
if (mSmbiosTable == NULL) {
return EFI_NOT_FOUND;
}
if (EFI_ERROR (Status)) {
ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_SMBIOSVIEW_LIBSMBIOSVIEW_GET_TABLE_ERROR), gShellDebug1HiiHandle, Status);
return Status;
}
//
// Init SMBIOS structure table address
//
mSmbiosStruct->Raw = (UINT8 *)(UINTN)(mSmbiosTable->TableAddress);
mInit = 1;
return EFI_SUCCESS;
}
/**
Init the SMBIOS VIEW API's environment.
@retval EFI_SUCCESS Successful to init the SMBIOS VIEW Lib.
**/
EFI_STATUS
LibSmbios64BitInit (
VOID
)
{
EFI_STATUS Status;
//
// Init only once
//
if (m64Init == 1) {
return EFI_SUCCESS;
}
//
// Get SMBIOS table from System Configure table
//
Status = GetSystemConfigurationTable (&gEfiSmbios3TableGuid, (VOID **)&mSmbios64BitTable);
if (mSmbios64BitTable == NULL) {
return EFI_NOT_FOUND;
}
if (EFI_ERROR (Status)) {
ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_SMBIOSVIEW_LIBSMBIOSVIEW_GET_TABLE_ERROR), gShellDebug1HiiHandle, Status);
return Status;
}
//
// Init SMBIOS structure table address
//
mSmbios64BitStruct->Raw = (UINT8 *)(UINTN)(mSmbios64BitTable->TableAddress);
m64Init = 1;
return EFI_SUCCESS;
}
/**
Cleanup the Smbios information.
**/
VOID
LibSmbiosCleanup (
VOID
)
{
//
// Release resources
//
if (mSmbiosTable != NULL) {
mSmbiosTable = NULL;
}
mInit = 0;
}
/**
Cleanup the Smbios information.
**/
VOID
LibSmbios64BitCleanup (
VOID
)
{
//
// Release resources
//
if (mSmbios64BitTable != NULL) {
mSmbios64BitTable = NULL;
}
m64Init = 0;
}
/**
Get the entry point structure for the table.
@param[out] EntryPointStructure The pointer to populate.
**/
VOID
LibSmbiosGetEPS (
OUT SMBIOS_TABLE_ENTRY_POINT **EntryPointStructure
)
{
//
// return SMBIOS Table address
//
*EntryPointStructure = mSmbiosTable;
}
/**
Get the entry point structure for the table.
@param[out] EntryPointStructure The pointer to populate.
**/
VOID
LibSmbios64BitGetEPS (
OUT SMBIOS_TABLE_3_0_ENTRY_POINT **EntryPointStructure
)
{
//
// return SMBIOS Table address
//
*EntryPointStructure = mSmbios64BitTable;
}
/**
Return SMBIOS string for the given string number.
@param[in] Smbios Pointer to SMBIOS structure.
@param[in] StringNumber String number to return. -1 is used to skip all strings and
point to the next SMBIOS structure.
@return Pointer to string, or pointer to next SMBIOS strcuture if StringNumber == -1
**/
CHAR8 *
LibGetSmbiosString (
IN SMBIOS_STRUCTURE_POINTER *Smbios,
IN UINT16 StringNumber
)
{
UINT16 Index;
CHAR8 *String;
ASSERT (Smbios != NULL);
//
// Skip over formatted section
//
String = (CHAR8 *)(Smbios->Raw + Smbios->Hdr->Length);
//
// Look through unformated section
//
for (Index = 1; Index <= StringNumber; Index++) {
if (StringNumber == Index) {
return String;
}
//
// Skip string
//
for ( ; *String != 0; String++) {
}
String++;
if (*String == 0) {
//
// If double NULL then we are done.
// Return pointer to next structure in Smbios.
// if you pass in a -1 you will always get here
//
Smbios->Raw = (UINT8 *)++String;
return NULL;
}
}
return NULL;
}
/**
Get SMBIOS structure for the given Handle,
Handle is changed to the next handle or 0xFFFF when the end is
reached or the handle is not found.
@param[in, out] Handle 0xFFFF: get the first structure
Others: get a structure according to this value.
@param[out] Buffer The pointer to the pointer to the structure.
@param[out] Length Length of the structure.
@retval DMI_SUCCESS Handle is updated with next structure handle or
0xFFFF(end-of-list).
@retval DMI_INVALID_HANDLE Handle is updated with first structure handle or
0xFFFF(end-of-list).
**/
EFI_STATUS
LibGetSmbiosStructure (
IN OUT UINT16 *Handle,
OUT UINT8 **Buffer,
OUT UINT16 *Length
)
{
SMBIOS_STRUCTURE_POINTER Smbios;
SMBIOS_STRUCTURE_POINTER SmbiosEnd;
UINT8 *Raw;
if (*Handle == INVALID_HANDLE) {
*Handle = mSmbiosStruct->Hdr->Handle;
return DMI_INVALID_HANDLE;
}
if ((Buffer == NULL) || (Length == NULL)) {
ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_SMBIOSVIEW_LIBSMBIOSVIEW_NO_BUFF_LEN_SPEC), gShellDebug1HiiHandle);
return DMI_INVALID_HANDLE;
}
*Length = 0;
Smbios.Hdr = mSmbiosStruct->Hdr;
SmbiosEnd.Raw = Smbios.Raw + mSmbiosTable->TableLength;
while (Smbios.Raw < SmbiosEnd.Raw) {
if (Smbios.Hdr->Handle == *Handle) {
Raw = Smbios.Raw;
//
// Walk to next structure
//
LibGetSmbiosString (&Smbios, (UINT16)(-1));
//
// Length = Next structure head - this structure head
//
*Length = (UINT16)(Smbios.Raw - Raw);
*Buffer = Raw;
//
// update with the next structure handle.
//
if (Smbios.Raw < SmbiosEnd.Raw) {
*Handle = Smbios.Hdr->Handle;
} else {
*Handle = INVALID_HANDLE;
}
return DMI_SUCCESS;
}
//
// Walk to next structure
//
LibGetSmbiosString (&Smbios, (UINT16)(-1));
}
*Handle = INVALID_HANDLE;
return DMI_INVALID_HANDLE;
}
/**
Get SMBIOS structure for the given Handle,
Handle is changed to the next handle or 0xFFFF when the end is
reached or the handle is not found.
@param[in, out] Handle 0xFFFF: get the first structure
Others: get a structure according to this value.
@param[out] Buffer The pointer to the pointer to the structure.
@param[out] Length Length of the structure.
@retval DMI_SUCCESS Handle is updated with next structure handle or
0xFFFF(end-of-list).
@retval DMI_INVALID_HANDLE Handle is updated with first structure handle or
0xFFFF(end-of-list).
**/
EFI_STATUS
LibGetSmbios64BitStructure (
IN OUT UINT16 *Handle,
OUT UINT8 **Buffer,
OUT UINT16 *Length
)
{
SMBIOS_STRUCTURE_POINTER Smbios;
SMBIOS_STRUCTURE_POINTER SmbiosEnd;
UINT8 *Raw;
if (*Handle == INVALID_HANDLE) {
*Handle = mSmbios64BitStruct->Hdr->Handle;
return DMI_INVALID_HANDLE;
}
if ((Buffer == NULL) || (Length == NULL)) {
ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_SMBIOSVIEW_LIBSMBIOSVIEW_NO_BUFF_LEN_SPEC), gShellDebug1HiiHandle);
return DMI_INVALID_HANDLE;
}
*Length = 0;
Smbios.Hdr = mSmbios64BitStruct->Hdr;
SmbiosEnd.Raw = Smbios.Raw + mSmbios64BitTableLength;
while (Smbios.Raw < SmbiosEnd.Raw) {
if (Smbios.Hdr->Handle == *Handle) {
Raw = Smbios.Raw;
//
// Walk to next structure
//
LibGetSmbiosString (&Smbios, (UINT16)(-1));
//
// Length = Next structure head - this structure head
//
*Length = (UINT16)(Smbios.Raw - Raw);
*Buffer = Raw;
//
// update with the next structure handle.
//
if (Smbios.Raw < SmbiosEnd.Raw) {
*Handle = Smbios.Hdr->Handle;
} else {
*Handle = INVALID_HANDLE;
}
return DMI_SUCCESS;
}
//
// Walk to next structure
//
LibGetSmbiosString (&Smbios, (UINT16)(-1));
}
*Handle = INVALID_HANDLE;
return DMI_INVALID_HANDLE;
}
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