src/util/efirom.c - ipxe - Git at Google

 /*
  * Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of the
  * License, or any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  * 02110-1301, USA.
  */

 #define FILE_LICENCE(...) extern void __file_licence ( void )
 #include <stdint.h>
 #include <stddef.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <errno.h>
 #include <assert.h>
 #include <getopt.h>

 #define EFI_HOSTONLY
 #include <ipxe/efi/Uefi.h>
 #include <ipxe/efi/IndustryStandard/PeImage.h>
 #include <ipxe/efi/IndustryStandard/Pci22.h>

 #define eprintf(...) fprintf ( stderr, __VA_ARGS__ )

 /* Round up ROM size */
 #define ROM_SIZE( len ) ( ( (len) + 511 ) & ~511 )

 /* Include the EDK2 compression code */
 #include "eficompress.c"

 /** Command-line options */
 struct options {
 	uint16_t vendor;
 	uint16_t device;
 	int compress;
 };

 /**
  * Allocate memory
  *
  * @v len		Length of memory to allocate
  * @ret ptr		Pointer to allocated memory
  */
 static void * xmalloc ( size_t len ) {
 	void *ptr;

 	ptr = malloc ( len );
 	if ( ! ptr ) {
 		eprintf ( "Could not allocate %zd bytes\n", len );
 		exit ( 1 );
 	}

 	return ptr;
 }

 /**
  * Read information from PE headers
  *
  * @v pe		PE file
  * @ret machine		Machine type
  * @ret subsystem	EFI subsystem
  */
 static void read_pe_info ( void *pe, uint16_t *machine,
 			   uint16_t *subsystem ) {
 	EFI_IMAGE_DOS_HEADER *dos;
 	union {
 		EFI_IMAGE_NT_HEADERS32 nt32;
 		EFI_IMAGE_NT_HEADERS64 nt64;
 	} *nt;

 	/* Locate NT header */
 	dos = pe;
 	nt = ( pe + dos->e_lfanew );

 	/* Parse out PE information */
 	*machine = nt->nt32.FileHeader.Machine;
 	switch ( *machine ) {
 	case EFI_IMAGE_MACHINE_IA32:
 	case EFI_IMAGE_MACHINE_ARMTHUMB_MIXED:
 		*subsystem = nt->nt32.OptionalHeader.Subsystem;
 		break;
 	case EFI_IMAGE_MACHINE_X64:
 	case EFI_IMAGE_MACHINE_AARCH64:
 	case EFI_IMAGE_MACHINE_LOONGARCH64:
 		*subsystem = nt->nt64.OptionalHeader.Subsystem;
 		break;
 	default:
 		eprintf ( "Unrecognised machine type %04x\n", *machine );
 		exit ( 1 );
 	}
 }

 /**
  * Attempt to compress EFI data in-place
  *
  * @v data		Data to be compressed
  * @v max_len		Length of data
  * @ret len		Length after attempted compression
  */
 static size_t efi_compress ( void *data, size_t max_len ) {
 	void *tmp;
 	UINT32 len;

 	/* Allocate temporary buffer for compressed data */
 	tmp = xmalloc ( max_len );

 	/* Attempt compression */
 	len = max_len;
 	if ( ( EfiCompress ( data, max_len, tmp, &len ) == 0 ) &&
 	     ( len < max_len ) ) {
 		memcpy ( data, tmp, len );
 	} else {
 		len = max_len;
 	}

 	/* Free temporary buffer */
 	free ( tmp );

 	return len;
 }

 /**
  * Convert EFI image to ROM image
  *
  * @v pe		EFI file
  * @v rom		ROM file
  */
 static void make_efi_rom ( FILE *pe, FILE *rom, struct options *opts ) {
 	struct {
 		EFI_PCI_EXPANSION_ROM_HEADER rom;
 		PCI_DATA_STRUCTURE pci __attribute__ (( aligned ( 4 ) ));
 		uint8_t checksum;
 	} *headers;
 	struct stat pe_stat;
 	size_t pe_size;
 	size_t rom_size;
 	size_t compressed_size;
 	void *buf;
 	void *payload;
 	unsigned int i;
 	uint16_t machine;
 	uint16_t subsystem;
 	uint8_t checksum;
 	int compressed;

 	/* Determine PE file size */
 	if ( fstat ( fileno ( pe ), &pe_stat ) != 0 ) {
 		eprintf ( "Could not stat PE file: %s\n",
 			  strerror ( errno ) );
 		exit ( 1 );
 	}
 	pe_size = pe_stat.st_size;

 	/* Determine ROM file size */
 	rom_size = ROM_SIZE ( sizeof ( *headers ) + pe_size );

 	/* Allocate ROM buffer and read in PE file */
 	buf = xmalloc ( rom_size );
 	memset ( buf, 0, rom_size );
 	headers = buf;
 	payload = ( buf + sizeof ( *headers ) );
 	if ( fread ( payload, pe_size, 1, pe ) != 1 ) {
 		eprintf ( "Could not read PE file: %s\n",
 			  strerror ( errno ) );
 		exit ( 1 );
 	}

 	/* Parse PE headers */
 	read_pe_info ( payload, &machine, &subsystem );

 	/* Compress the image, if requested */
 	if ( opts->compress ) {
 		compressed_size = efi_compress ( payload, pe_size );
 		rom_size = ROM_SIZE ( sizeof ( *headers ) + compressed_size );
 		compressed = ( compressed_size < pe_size );
 	} else {
 		compressed = 0;
 	}

 	/* Construct ROM header */
 	headers->rom.Signature = PCI_EXPANSION_ROM_HEADER_SIGNATURE;
 	headers->rom.InitializationSize = ( rom_size / 512 );
 	headers->rom.EfiSignature = EFI_PCI_EXPANSION_ROM_HEADER_EFISIGNATURE;
 	headers->rom.EfiSubsystem = subsystem;
 	headers->rom.EfiMachineType = machine;
 	headers->rom.CompressionType =
 		( compressed ? EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED : 0 );
 	headers->rom.EfiImageHeaderOffset = sizeof ( *headers );
 	headers->rom.PcirOffset =
 		offsetof ( typeof ( *headers ), pci );
 	headers->pci.Signature = PCI_DATA_STRUCTURE_SIGNATURE;
 	headers->pci.VendorId = opts->vendor;
 	headers->pci.DeviceId = opts->device;
 	headers->pci.Length = sizeof ( headers->pci );
 	headers->pci.ClassCode[2] = PCI_CLASS_NETWORK;
 	headers->pci.ImageLength = ( rom_size / 512 );
 	headers->pci.CodeType = 0x03; /* No constant in EFI headers? */
 	headers->pci.Indicator = 0x80; /* No constant in EFI headers? */

 	/* Fix image checksum */
 	for ( i = 0, checksum = 0 ; i < rom_size ; i++ )
 		checksum += *( ( uint8_t * ) buf + i );
 	headers->checksum -= checksum;

 	/* Write out ROM */
 	if ( fwrite ( buf, rom_size, 1, rom ) != 1 ) {
 		eprintf ( "Could not write ROM file: %s\n",
 			  strerror ( errno ) );
 		exit ( 1 );
 	}
 }

 /**
  * Print help
  *
  * @v program_name	Program name
  */
 static void print_help ( const char *program_name ) {
 	eprintf ( "Syntax: %s [--vendor=VVVV] [--device=DDDD] "
 		  "infile outfile\n", program_name );
 }

 /**
  * Parse command-line options
  *
  * @v argc		Argument count
  * @v argv		Argument list
  * @v opts		Options structure to populate
  */
 static int parse_options ( const int argc, char **argv,
 			   struct options *opts ) {
 	char *end;
 	int c;

 	while (1) {
 		int option_index = 0;
 		static struct option long_options[] = {
 			{ "vendor", required_argument, NULL, 'v' },
 			{ "device", required_argument, NULL, 'd' },
 			{ "compress", 0, NULL, 'c' },
 			{ "help", 0, NULL, 'h' },
 			{ 0, 0, 0, 0 }
 		};

 		if ( ( c = getopt_long ( argc, argv, "v:d:ch",
 					 long_options,
 					 &option_index ) ) == -1 ) {
 			break;
 		}

 		switch ( c ) {
 		case 'v':
 			opts->vendor = strtoul ( optarg, &end, 16 );
 			if ( *end || ( ! *optarg ) ) {
 				eprintf ( "Invalid vendor \"%s\"\n", optarg );
 				exit ( 2 );
 			}
 			break;
 		case 'd':
 			opts->device = strtoul ( optarg, &end, 16 );
 			if ( *end || ( ! *optarg ) ) {
 				eprintf ( "Invalid device \"%s\"\n", optarg );
 				exit ( 2 );
 			}
 			break;
 		case 'c':
 			opts->compress = 1;
 			break;
 		case 'h':
 			print_help ( argv[0] );
 			exit ( 0 );
 		case '?':
 		default:
 			exit ( 2 );
 		}
 	}
 	return optind;
 }

 int main ( int argc, char **argv ) {
 	struct options opts;
 	int infile_index;
 	const char *infile_name;
 	const char *outfile_name;
 	FILE *infile;
 	FILE *outfile;

 	/* Parse command-line arguments */
 	memset ( &opts, 0, sizeof ( opts ) );
 	infile_index = parse_options ( argc, argv, &opts );
 	if ( argc != ( infile_index + 2 ) ) {
 		print_help ( argv[0] );
 		exit ( 2 );
 	}
 	infile_name = argv[infile_index];
 	outfile_name = argv[infile_index + 1];

 	/* Open input and output files */
 	infile = fopen ( infile_name, "r" );
 	if ( ! infile ) {
 		eprintf ( "Could not open %s for reading: %s\n",
 			  infile_name, strerror ( errno ) );
 		exit ( 1 );
 	}
 	outfile = fopen ( outfile_name, "w" );
 	if ( ! outfile ) {
 		eprintf ( "Could not open %s for writing: %s\n",
 			  outfile_name, strerror ( errno ) );
 		exit ( 1 );
 	}

 	/* Convert file */
 	make_efi_rom ( infile, outfile, &opts );

 	fclose ( outfile );
 	fclose ( infile );

 	return 0;
 }
	/*
	* Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation; either version 2 of the
	* License, or any later version.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	* 02110-1301, USA.
	*/

	#define FILE_LICENCE(...) extern void __file_licence ( void )
	#include <stdint.h>
	#include <stddef.h>
	#include <stdlib.h>
	#include <stdio.h>
	#include <string.h>
	#include <sys/stat.h>
	#include <unistd.h>
	#include <errno.h>
	#include <assert.h>
	#include <getopt.h>

	#define EFI_HOSTONLY
	#include <ipxe/efi/Uefi.h>
	#include <ipxe/efi/IndustryStandard/PeImage.h>
	#include <ipxe/efi/IndustryStandard/Pci22.h>

	#define eprintf(...) fprintf ( stderr, __VA_ARGS__ )

	/* Round up ROM size */
	#define ROM_SIZE( len ) ( ( (len) + 511 ) & ~511 )

	/* Include the EDK2 compression code */
	#include "eficompress.c"

	/** Command-line options */
	struct options {
	uint16_t vendor;
	uint16_t device;
	int compress;
	};

	/**
	* Allocate memory
	*
	* @v len Length of memory to allocate
	* @ret ptr Pointer to allocated memory
	*/
	static void * xmalloc ( size_t len ) {
	void *ptr;

	ptr = malloc ( len );
	if ( ! ptr ) {
	eprintf ( "Could not allocate %zd bytes\n", len );
	exit ( 1 );
	}

	return ptr;
	}

	/**
	* Read information from PE headers
	*
	* @v pe PE file
	* @ret machine Machine type
	* @ret subsystem EFI subsystem
	*/
	static void read_pe_info ( void pe, uint16_t machine,
	uint16_t *subsystem ) {
	EFI_IMAGE_DOS_HEADER *dos;
	union {
	EFI_IMAGE_NT_HEADERS32 nt32;
	EFI_IMAGE_NT_HEADERS64 nt64;
	} *nt;

	/* Locate NT header */
	dos = pe;
	nt = ( pe + dos->e_lfanew );

	/* Parse out PE information */
	*machine = nt->nt32.FileHeader.Machine;
	switch ( *machine ) {
	case EFI_IMAGE_MACHINE_IA32:
	case EFI_IMAGE_MACHINE_ARMTHUMB_MIXED:
	*subsystem = nt->nt32.OptionalHeader.Subsystem;
	break;
	case EFI_IMAGE_MACHINE_X64:
	case EFI_IMAGE_MACHINE_AARCH64:
	case EFI_IMAGE_MACHINE_LOONGARCH64:
	*subsystem = nt->nt64.OptionalHeader.Subsystem;
	break;
	default:
	eprintf ( "Unrecognised machine type %04x\n", *machine );
	exit ( 1 );
	}
	}

	/**
	* Attempt to compress EFI data in-place
	*
	* @v data Data to be compressed
	* @v max_len Length of data
	* @ret len Length after attempted compression
	*/
	static size_t efi_compress ( void *data, size_t max_len ) {
	void *tmp;
	UINT32 len;

	/* Allocate temporary buffer for compressed data */
	tmp = xmalloc ( max_len );

	/* Attempt compression */
	len = max_len;
	if ( ( EfiCompress ( data, max_len, tmp, &len ) == 0 ) &&
	( len < max_len ) ) {
	memcpy ( data, tmp, len );
	} else {
	len = max_len;
	}

	/* Free temporary buffer */
	free ( tmp );

	return len;
	}

	/**
	* Convert EFI image to ROM image
	*
	* @v pe EFI file
	* @v rom ROM file
	*/
	static void make_efi_rom ( FILE pe, FILE rom, struct options *opts ) {
	struct {
	EFI_PCI_EXPANSION_ROM_HEADER rom;
	PCI_DATA_STRUCTURE pci __attribute__ (( aligned ( 4 ) ));
	uint8_t checksum;
	} *headers;
	struct stat pe_stat;
	size_t pe_size;
	size_t rom_size;
	size_t compressed_size;
	void *buf;
	void *payload;
	unsigned int i;
	uint16_t machine;
	uint16_t subsystem;
	uint8_t checksum;
	int compressed;

	/* Determine PE file size */
	if ( fstat ( fileno ( pe ), &pe_stat ) != 0 ) {
	eprintf ( "Could not stat PE file: %s\n",
	strerror ( errno ) );
	exit ( 1 );
	}
	pe_size = pe_stat.st_size;

	/* Determine ROM file size */
	rom_size = ROM_SIZE ( sizeof ( *headers ) + pe_size );

	/* Allocate ROM buffer and read in PE file */
	buf = xmalloc ( rom_size );
	memset ( buf, 0, rom_size );
	headers = buf;
	payload = ( buf + sizeof ( *headers ) );
	if ( fread ( payload, pe_size, 1, pe ) != 1 ) {
	eprintf ( "Could not read PE file: %s\n",
	strerror ( errno ) );
	exit ( 1 );
	}

	/* Parse PE headers */
	read_pe_info ( payload, &machine, &subsystem );

	/* Compress the image, if requested */
	if ( opts->compress ) {
	compressed_size = efi_compress ( payload, pe_size );
	rom_size = ROM_SIZE ( sizeof ( *headers ) + compressed_size );
	compressed = ( compressed_size < pe_size );
	} else {
	compressed = 0;
	}

	/* Construct ROM header */
	headers->rom.Signature = PCI_EXPANSION_ROM_HEADER_SIGNATURE;
	headers->rom.InitializationSize = ( rom_size / 512 );
	headers->rom.EfiSignature = EFI_PCI_EXPANSION_ROM_HEADER_EFISIGNATURE;
	headers->rom.EfiSubsystem = subsystem;
	headers->rom.EfiMachineType = machine;
	headers->rom.CompressionType =
	( compressed ? EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED : 0 );
	headers->rom.EfiImageHeaderOffset = sizeof ( *headers );
	headers->rom.PcirOffset =
	offsetof ( typeof ( *headers ), pci );
	headers->pci.Signature = PCI_DATA_STRUCTURE_SIGNATURE;
	headers->pci.VendorId = opts->vendor;
	headers->pci.DeviceId = opts->device;
	headers->pci.Length = sizeof ( headers->pci );
	headers->pci.ClassCode[2] = PCI_CLASS_NETWORK;
	headers->pci.ImageLength = ( rom_size / 512 );
	headers->pci.CodeType = 0x03; /* No constant in EFI headers? */
	headers->pci.Indicator = 0x80; /* No constant in EFI headers? */

	/* Fix image checksum */
	for ( i = 0, checksum = 0 ; i < rom_size ; i++ )
	checksum += ( ( uint8_t ) buf + i );
	headers->checksum -= checksum;

	/* Write out ROM */
	if ( fwrite ( buf, rom_size, 1, rom ) != 1 ) {
	eprintf ( "Could not write ROM file: %s\n",
	strerror ( errno ) );
	exit ( 1 );
	}
	}

	/**
	* Print help
	*
	* @v program_name Program name
	*/
	static void print_help ( const char *program_name ) {
	eprintf ( "Syntax: %s [--vendor=VVVV] [--device=DDDD] "
	"infile outfile\n", program_name );
	}

	/**
	* Parse command-line options
	*
	* @v argc Argument count
	* @v argv Argument list
	* @v opts Options structure to populate
	*/
	static int parse_options ( const int argc, char **argv,
	struct options *opts ) {
	char *end;
	int c;

	while (1) {
	int option_index = 0;
	static struct option long_options[] = {
	{ "vendor", required_argument, NULL, 'v' },
	{ "device", required_argument, NULL, 'd' },
	{ "compress", 0, NULL, 'c' },
	{ "help", 0, NULL, 'h' },
	{ 0, 0, 0, 0 }
	};

	if ( ( c = getopt_long ( argc, argv, "v:d:ch",
	long_options,
	&option_index ) ) == -1 ) {
	break;
	}

	switch ( c ) {
	case 'v':
	opts->vendor = strtoul ( optarg, &end, 16 );
	if ( end \|\| ( ! optarg ) ) {
	eprintf ( "Invalid vendor \"%s\"\n", optarg );
	exit ( 2 );
	}
	break;
	case 'd':
	opts->device = strtoul ( optarg, &end, 16 );
	if ( end \|\| ( ! optarg ) ) {
	eprintf ( "Invalid device \"%s\"\n", optarg );
	exit ( 2 );
	}
	break;
	case 'c':
	opts->compress = 1;
	break;
	case 'h':
	print_help ( argv[0] );
	exit ( 0 );
	case '?':
	default:
	exit ( 2 );
	}
	}
	return optind;
	}

	int main ( int argc, char **argv ) {
	struct options opts;
	int infile_index;
	const char *infile_name;
	const char *outfile_name;
	FILE *infile;
	FILE *outfile;

	/* Parse command-line arguments */
	memset ( &opts, 0, sizeof ( opts ) );
	infile_index = parse_options ( argc, argv, &opts );
	if ( argc != ( infile_index + 2 ) ) {
	print_help ( argv[0] );
	exit ( 2 );
	}
	infile_name = argv[infile_index];
	outfile_name = argv[infile_index + 1];

	/* Open input and output files */
	infile = fopen ( infile_name, "r" );
	if ( ! infile ) {
	eprintf ( "Could not open %s for reading: %s\n",
	infile_name, strerror ( errno ) );
	exit ( 1 );
	}
	outfile = fopen ( outfile_name, "w" );
	if ( ! outfile ) {
	eprintf ( "Could not open %s for writing: %s\n",
	outfile_name, strerror ( errno ) );
	exit ( 1 );
	}

	/* Convert file */
	make_efi_rom ( infile, outfile, &opts );

	fclose ( outfile );
	fclose ( infile );

	return 0;
	}