【導讀】同濟大學軟件學院。UEFI與固件程序設計

　　

【正文】 , … ? Memory malloc(), free(), realloc(), … ? Time/Date time(), asctime(), ctime(), … ? Math sqrt(), pow(), sin(), log(), … EFI Library ? “Lite Weight” C Library like functions ? String Functions ? Memory Support Functions ? CRC Support Functions ? Text I/O Functions ? Math Functions ? Spin Lock Functions ? Specific EFI functions ? Handle and Protocol Support Functions ? Device Path Support Functions ? Port of FreeBSD TCP/IP stack ? Supports standard protocols ? IPv4, ICMP, ARP, UDP, TCP ? Socket library interface ? Implemented as an EFI protocol Network Components ? SMBIOS Library ? Library routines for parsing SMBIOS tables ? Database ? btree ? Hashing ? Compression ? General purpose pression/depression ? Gzip functionality Miscellaneous ? Network utilities ? FTP client and server, ping ? Text editor ? Scripting interpreter (Python) ? Sample applications Utilities include EFI_STATUS InitializeHelloApplication ( IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable ) { UINTN Index。 SystemTableConOutOutputString(SystemTableConOut, L”Hello application started\n)。 SystemTableConOutOutputString(SystemTableConOut, L\n\r\n\r\n\rHit any key to exit this image\n\r)。 SystemTableBootServicesWaitForEvent( 1, amp。(SystemTableConInWaitForKey), amp。Index)。 SystemTableConOutOutputString(SystemTableConOut, L\n\r\n\r)。 return EFI_SUCCESS。 } EFI include include EFI_STATUS InitializeHelloLibApplication ( IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable ) { InitializeLib (ImageHandle, SystemTable)。 Print(L\n\n\nHelloLib application started\n\n\n)。 Print(L\nHit any key to exit this image\n)。 WaitForSingleEvent(STConInWaitForKey,0)。 STConOutOutputString (STConOut, L\n\r\n\r)。 return EFI_SUCCESS。 } EFI Library C Library include include EFI_STATUS InitializeHelloLibCApplication ( IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable ) { InitializeLib(ImageHandle, SystemTable)。 printf(Hello LibC application started\n\n\n)。 printf(Hit C/R to exit this image\n)。 return( getchar() )。 } C Library include include int main (int argc, char **argv ) { printf(Hello LibC application started\n\n\n)。 printf(Hit C/R to exit this image\n)。 return( getchar() )。 } ? No direct support ? No Global constructors and destructors ? New and Delete can be mapped to malloc/free C++ Support Portable Embedded Graphics ? Portable Embedded Graphics ? Portable graphics library for EFI ? Similar windowing ponents (widgets) ? Dialog boxes ? Progress bars, scroll bars ? Text boxes ? Window Management ? Fonts ? Bitmaps, JPEG, … ? Contact Swell Software ? PEG Components Summary ? EFI Applications extend firmware ? Provides system independence in the preboot space ? Hardware ? Operating System ? Platform ? IA32, Intel174。 64, and IA64 ? Large library support ? EFI Shell provides convenient launch point Further Information ? ? EFI Web site for EFI Toolkit download ? ? Website for EFI open source resources ? EFI Developer Kit (EDK) ? Nt32 emulation environment ? EFI Shell Source ? ? Portable Embedded Graphics toolkit ? :/ ? UEFI Specificatio