This returns the processor’s serial number. The processor serial number was introduced on Intel Pentium III, but due to privacy concerns, this feature is no longer implemented on later models (PSN feature bit is always cleared). Transmeta’s Efficeon and Crusoe processors also provide this feature. AMD CPUs however, do not implement this feature in any CPU models.
For Intel Pentium III CPUs, the serial number is returned in EDX:ECX registers. For Transmeta Efficeon CPUs, it is returned in EBX:EAX registers. And for Transmeta Crusoe CPUs, it is returned in EBX register only.
Note that the processor serial number feature must be enabled in the BIOS setting in order to function.
Processor information that describes the processor features. For an x86 class CPU, the field format depends on the processor support of the CPUID instruction. If the instruction is supported, the property contains 2 (two) DWORD formatted values. The first is an offset of 08h-0Bh, which is the EAX value that a CPUID instruction returns with input EAX set to 1. The second is an offset of 0Ch-0Fh, which is the EDX value that the instruction returns. Only the first two bytes of the property are significant and contain the contents of the DX register at CPU reset—all others are set to 0 (zero), and the contents are in DWORD format.”
SIIM800L 是通过串口用 AT 命令和 ESP32 打交道的，为了便于测试设计如下的测试代码：
#include <Wire.h>
// Set serial for AT commands (to the module)
#define SerialAT Serial1
#define MODEM_RST 5
#define MODEM_PWRKEY 4
#define MODEM_POWER_ON 23
#define MODEM_TX 27
#define MODEM_RX 26
#define I2C_SDA 21
#define I2C_SCL 22
#define LED_GPIO 13
#define LED_ON HIGH
#define LED_OFF LOW
#define IP5306_ADDR 0x75
#define IP5306_REG_SYS_CTL0 0x00
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
// Set GSM module baud rate and UART pins
SerialAT.begin(115200, SERIAL_8N1, MODEM_RX, MODEM_TX);
delay(1000);
#ifdef MODEM_RST
// Keep reset high
pinMode(MODEM_RST, OUTPUT);
digitalWrite(MODEM_RST, HIGH);
#endif
pinMode(MODEM_PWRKEY, OUTPUT);
pinMode(MODEM_POWER_ON, OUTPUT);
// Turn on the Modem power first
digitalWrite(MODEM_POWER_ON, HIGH);
// Pull down PWRKEY for more than 1 second according to manual requirements
digitalWrite(MODEM_PWRKEY, HIGH);
delay(100);
digitalWrite(MODEM_PWRKEY, LOW);
delay(1000);
digitalWrite(MODEM_PWRKEY, HIGH);
// Initialize the indicator as an output
pinMode(LED_GPIO, OUTPUT);
digitalWrite(LED_GPIO, LED_OFF);
Serial.println("Starting......");
}
void loop() {
if (Serial.available()) { // If anything comes in Serial (USB),
SerialAT.write(Serial.read()); // read it and send it out Serial1
}
if (SerialAT.available()) { // If anything comes in Serial1
Serial.write(SerialAT.read()); // read it and send it out Serial (USB)
}
}
//
// print it...
//
if (ShellStatus == SHELL_SUCCESS) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_LZC_OUTPUT),gShellLevel3HiiHandle);
//Your code
DP=FileDevicePath(NULL,L"fso:\\fake.efi");
Print(L"%s\n",ConvertDevicePathToText(DP,TRUE,FALSE));
//
// Load the image with:
// FALSE - not from boot manager and NULL, 0 being not already in memory
//
Status = gBS->LoadImage(
FALSE,
ImageHandle,
DP,
(VOID*)&Hello2_efi[0],
sizeof(Hello2_efi),
&NewHandle);
if (EFI_ERROR(Status)) {
Print(L"Load image Error! [%r]\n",Status);
return 0;
}
//
// now start the image, passing up exit data if the caller requested it
//
Status = gBS->StartImage(
NewHandle,
&ExitDataSizePtr,
NULL
);
if (EFI_ERROR(Status)) {
Print(L"\nError during StartImage [%X]\n",Status);
return 0;
}
Status = gBS->UnloadImage(NewHandle);
if (EFI_ERROR(Status)) {
Print(L"Un-Load image Error! %r\n",Status);
return 0;
}
/**
Function for 'lzc' command.
@param[in] ImageHandle Handle to the Image (NULL if Internal).
@param[in] SystemTable Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunLzc (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/**
Checks if a command string has been registered for CommandString and if so it runs
the previously registered handler for that command with the command line.
If CommandString is NULL, then ASSERT().
If Sections is specified, then each section name listed will be compared in a casesensitive
manner, to the section names described in Appendix B UEFI Shell 2.0 spec. If the section exists,
it will be appended to the returned help text. If the section does not exist, no
information will be returned. If Sections is NULL, then all help text information
available will be returned.
@param[in] CommandString Pointer to the command name. This is the name
found on the command line in the shell.
@param[in, out] RetVal Pointer to the return vaule from the command handler.
@param[in, out] CanAffectLE indicates whether this command's return value
needs to be placed into LASTERROR environment variable.
@retval RETURN_SUCCESS The handler was run.
@retval RETURN_NOT_FOUND The CommandString did not match a registered
command name.
@sa SHELL_RUN_COMMAND
**/
RETURN_STATUS
EFIAPI
ShellCommandRunCommandHandler (
IN CONST CHAR16 *CommandString,
IN OUT SHELL_STATUS *RetVal,
IN OUT BOOLEAN *CanAffectLE OPTIONAL
)
………………..
if (RetVal != NULL) {
*RetVal = Node->CommandHandler(NULL, gST);
} else {
Node->CommandHandler(NULL, gST);
}
return (RETURN_SUCCESS);
/**
Function for 'getmtc' command.
@param[in] ImageHandle Handle to the Image (NULL if Internal).
@param[in] SystemTable Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunLzc (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
);
#
# Build a second version of the shell with all commands integrated
#
ShellPkg/Application/Shell/Shell.inf {
<Defines>
FILE_GUID = EA4BB293-2D7F-4456-A681-1F22F42CD0BC
<PcdsFixedAtBuild>
gEfiShellPkgTokenSpaceGuid.PcdShellLibAutoInitialize|FALSE
<LibraryClasses>
NULL|ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.inf
NULL|ShellPkg/Library/UefiShellLevel1CommandsLib/UefiShellLevel1CommandsLib.inf
NULL|ShellPkg/Library/UefiShellLevel3CommandsLib/UefiShellLevel3CommandsLib.inf
NULL|ShellPkg/Library/UefiShellDriver1CommandsLib/UefiShellDriver1CommandsLib.inf
NULL|ShellPkg/Library/UefiShellInstall1CommandsLib/UefiShellInstall1CommandsLib.inf
NULL|ShellPkg/Library/UefiShellDebug1CommandsLib/UefiShellDebug1CommandsLib.inf
NULL|ShellPkg/Library/UefiShellNetwork1CommandsLib/UefiShellNetwork1CommandsLib.inf
NULL|ShellPkg/Library/UefiShellNetwork2CommandsLib/UefiShellNetwork2CommandsLib.inf
NULL|ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.inf
}
/**
Translate a *.BMP graphics image to a GOP blt buffer. If a NULL Blt buffer
is passed in a GopBlt buffer will be allocated by this routine using
EFI_BOOT_SERVICES.AllocatePool(). If a GopBlt buffer is passed in it will be
used if it is big enough.
@param [in] BmpImage Pointer to BMP file.
@param [in] BmpImageSize Number of bytes in BmpImage.
@param [in, out] GopBlt Buffer containing GOP version of BmpImage.
@param [in, out] GopBltSize Size of GopBlt in bytes.
@param [out] PixelHeight Height of GopBlt/BmpImage in pixels.
@param [out] PixelWidth Width of GopBlt/BmpImage in pixels.
@retval RETURN_SUCCESS GopBlt and GopBltSize are returned.
@retval RETURN_INVALID_PARAMETER BmpImage is NULL.
@retval RETURN_INVALID_PARAMETER GopBlt is NULL.
@retval RETURN_INVALID_PARAMETER GopBltSize is NULL.
@retval RETURN_INVALID_PARAMETER PixelHeight is NULL.
@retval RETURN_INVALID_PARAMETER PixelWidth is NULL.
@retval RETURN_UNSUPPORTED BmpImage is not a valid *.BMP image.
@retval RETURN_BUFFER_TOO_SMALL The passed in GopBlt buffer is not big
enough. The required size is returned in
GopBltSize.
@retval RETURN_OUT_OF_RESOURCES The GopBlt buffer could not be allocated.
**/
RETURN_STATUS
EFIAPI
TranslateBmpToGopBlt (
IN VOID *BmpImage,
IN UINTN BmpImageSize,
IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL **GopBlt,
IN OUT UINTN *GopBltSize,
OUT UINTN *PixelHeight,
OUT UINTN *PixelWidth
);
/**
Translate a GOP blt buffer to an uncompressed 24-bit per pixel BMP graphics
image. If a NULL BmpImage is passed in a BmpImage buffer will be allocated by
this routine using EFI_BOOT_SERVICES.AllocatePool(). If a BmpImage buffer is
passed in it will be used if it is big enough.
@param [in] GopBlt Pointer to GOP blt buffer.
@param [in] PixelHeight Height of GopBlt/BmpImage in pixels.
@param [in] PixelWidth Width of GopBlt/BmpImage in pixels.
@param [in, out] BmpImage Buffer containing BMP version of GopBlt.
@param [in, out] BmpImageSize Size of BmpImage in bytes.
@retval RETURN_SUCCESS BmpImage and BmpImageSize are returned.
@retval RETURN_INVALID_PARAMETER GopBlt is NULL.
@retval RETURN_INVALID_PARAMETER BmpImage is NULL.
@retval RETURN_INVALID_PARAMETER BmpImageSize is NULL.
@retval RETURN_UNSUPPORTED GopBlt cannot be converted to a *.BMP image.
@retval RETURN_BUFFER_TOO_SMALL The passed in BmpImage buffer is not big
enough. The required size is returned in
BmpImageSize.
@retval RETURN_OUT_OF_RESOURCES The BmpImage buffer could not be allocated.
**/
RETURN_STATUS
EFIAPI
TranslateGopBltToBmp (
IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *GopBlt,
IN UINT32 PixelHeight,
IN UINT32 PixelWidth,
IN OUT VOID **BmpImage,
IN OUT UINT32 *BmpImageSize
);
