tools: add Broadcom cable modem firmware image creator

Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36873 3c298f89-4303-0410-b956-a3cf2f4a3e73

4 files changed, 513 insertions, 0 deletions

diff --git a/tools/firmware-utils/Makefile b/tools/firmware-utils/Makefile
index 3fdf2d0060..70edd48df7 100644
--- a/tools/firmware-utils/Makefile
+++ b/tools/firmware-utils/Makefile
@@ -62,6 +62,7 @@ define Host/Compile
 	$(call cc, mkcameofw, -Wall)
 	$(call cc,seama md5)
 	$(call cc,fix-u-media-header cyg_crc32,-Wall)
+	$(call cc,hcsmakeimage bcmalgo)
 endef
 
 define Host/Install
diff --git a/tools/firmware-utils/src/bcmalgo.c b/tools/firmware-utils/src/bcmalgo.c
new file mode 100644
index 0000000000..e7d3b113be
--- /dev/null
+++ b/tools/firmware-utils/src/bcmalgo.c
@@ -0,0 +1,248 @@
+#include <stdlib.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <string.h>
+#include <getopt.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include "bcmalgo.h"
+
+
+#define UTIL_VERSION "0.1"
+#define ENDIAN_REVERSE_NEEDED
+
+uint32_t reverse_endian32 ( uint32_t data )
+{
+#ifdef ENDIAN_REVERSE_NEEDED
+	return 0 | ( data & 0x000000ff ) << 24
+	       | ( data & 0x0000ff00 ) << 8
+	       | ( data & 0x00ff0000 ) >> 8
+	       | ( data & 0xff000000 ) >> 24;
+#else
+	return data;
+#endif
+}
+
+uint16_t reverse_endian16 ( uint16_t data )
+{
+#ifdef ENDIAN_REVERSE_NEEDED
+	return 0 | ( data & 0x00ff ) << 8
+	       | ( data & 0xff00 ) >> 8;
+#else
+	return data;
+#endif
+}
+
+
+
+uint32_t get_buffer_crc ( char* filebuffer,size_t size )
+{
+
+	long crc=0xffffffffL;
+	long crcxor = 0xffffffffL;
+	long num4 = 0xffffffffL;
+	long num5 = size;
+	long num6 = 0x4c11db7L;
+	long num7 = 0x80000000L;
+	int i;
+	long j;
+	for ( i = 0; i < ( num5 ); i++ )
+	{
+		long num2 = filebuffer[i];
+		for ( j = 0x80L; j != 0L; j = j >> 1 )
+		{
+			long num3 = crc & num7;
+			crc = crc << 1;
+			if ( ( num2 & j ) != 0L )
+			{
+				num3 ^= num7;
+			}
+			if ( num3 != 0L )
+			{
+				crc ^= num6;
+			}
+		}
+	}
+	crc ^= crcxor;
+	crc &= num4;
+
+	uint8_t b1 = ( uint8_t ) ( ( crc & -16777216L ) >> 0x18 );
+	uint8_t b2 = ( uint8_t ) ( ( crc & 0xff0000L ) >> 0x10 );
+	uint8_t b3 = ( uint8_t ) ( ( crc & 0xff00L ) >> 8 );
+	uint8_t b4 = ( uint8_t ) ( crc & 0xffL );
+	int32_t crc_result = ( b1 | b2 << 8| b3 << 16| b4 <<24 );
+	return reverse_endian32 ( crc_result );
+}
+
+//Thnx to Vector for the algo.
+uint32_t get_file_crc ( char* filename )
+{
+	struct stat buf;
+	stat ( filename,&buf );
+	char* filebuffer = malloc ( buf.st_size+10 );
+	FILE* fd = fopen ( filename,"r" );
+	fread ( filebuffer, 1, buf.st_size,fd );
+	fclose ( fd );
+	uint32_t crc = get_buffer_crc ( filebuffer,buf.st_size );
+	free ( filebuffer );
+	return crc;
+}
+
+
+
+uint16_t get_hcs ( ldr_header_t* hd )
+{
+	uint8_t* head = ( uint8_t* ) hd;
+	uint8_t hcs_minor;
+	uint8_t hcs_major;
+	uint16_t n = 0xffff;
+	uint16_t m = 0;
+	int state = 0;
+	int i,j;
+	for ( i = 0; i < 0x54; i++ )
+	{
+		uint16_t m = head[i];
+		m = m << 8;
+		for ( j = 0; j < 8; j++ )
+		{
+			if ( ( ( n ^ m ) & 0x8000 ) == 0 )
+			{
+				state = 0;
+			}
+			else
+			{
+				state = 1;
+			}
+			n = n << 1;
+			if ( state )
+			{
+				n ^= 0x1021;
+			}
+			m = m << 1;
+		}
+		n &= 0xffff;
+	}
+	n ^= 0xffff;
+	hcs_major = ( uint8_t ) ( ( n & 0xff00 ) >> 8 );
+	hcs_minor = ( uint8_t ) ( n & 0xff );
+	uint16_t hcs = hcs_major <<8 | hcs_minor;
+	return hcs;
+}
+
+ldr_header_t* construct_header ( uint32_t magic, uint16_t rev_maj,uint16_t rev_min, uint32_t build_date, uint32_t filelen, uint32_t ldaddress, const char* filename, uint32_t crc_data )
+{
+	ldr_header_t* hd = malloc ( sizeof ( ldr_header_t ) );
+	hd->magic=reverse_endian16 ( magic );
+	hd->control=0; //FixMe: Make use of it once compression is around
+	hd->rev_min = reverse_endian16 ( rev_min );
+	hd->rev_maj = reverse_endian16 ( rev_maj );
+	hd->build_date = reverse_endian32 ( build_date );
+	hd->filelen = reverse_endian32 ( filelen );
+	hd->ldaddress = reverse_endian32 ( ldaddress );
+	printf ( "Creating header for %s...\n", filename );
+	if ( strlen ( filename ) >63 )
+	{
+		printf ( "[!] Filename too long - stripping it to 63 bytes.\n" );
+		strncpy ( ( char* ) &hd->filename, filename, 63 );
+		hd->filename[63]=0x00;
+	}
+	else
+	{
+		strcpy ( ( char* ) &hd->filename, filename );
+	}
+	hd->crc=reverse_endian32 ( crc_data );
+	hd->hcs = reverse_endian16 ( get_hcs ( hd ) );
+	return hd;
+}
+
+static char control_unc[]  = "Uncompressed";
+static char control_lz[]   = "LZRW1/KH";
+static char control_mlzo[] = "mini-LZO";
+static char control_nrv[] = "NRV2D99 [Bootloader?]";
+static char control_nstdlzma[] = "(non-standard) LZMA";
+static char control_unk[] = "Unknown";
+char* get_control_info ( uint16_t control )
+{
+	control = reverse_endian16 ( control );
+	switch ( control )
+	{
+		case 0:
+			return control_unc;
+			break;
+		case 1:
+			return control_lz;
+			break;
+		case 2:
+			return control_mlzo;
+			break;
+		case 3:
+			return control_unc;
+			break;
+		case 4:
+			return control_nrv;
+			break;
+		case 5:
+			return control_nstdlzma;
+			break;
+		case 6:
+			return control_unc;
+			break;
+		case 7:
+			return control_unc;
+			break;
+		default:
+			return control_unk;
+			break;
+	}
+
+}
+
+int dump_header ( ldr_header_t* hd )
+{
+	printf ( "=== Header Information ===\n" );
+	printf ( "Header magic:\t0x%04X\n",reverse_endian16 ( hd->magic ) );
+	printf ( "Control:\t0x%04X (%s)\n",reverse_endian16 ( hd->control ), get_control_info ( hd->control ) );
+	printf ( "Major rev. :\t0x%04X\n",reverse_endian16 ( hd->rev_maj ) );
+	printf ( "Minor rev. :\t0x%04X\n",reverse_endian16 ( hd->rev_min ) );
+	printf ( "File name :\t%s\n", ( char* ) &hd->filename );
+	printf ( "File length:\t%d bytes\n", reverse_endian32 ( hd->filelen ) );
+	printf ( "Build time:\t0x%08X //FixMe: print in human-readable form\n", reverse_endian32 ( hd->build_date ) ); //FixMe:
+	printf ( "HCS:\t\t0x%04X  ",reverse_endian16 ( hd->hcs ) );
+	uint16_t hcs = get_hcs ( hd );
+	int ret=0;
+	if ( hcs ==reverse_endian16 ( hd->hcs ) )
+	{
+		printf ( "(OK!)\n" );
+	}
+	else
+	{
+		printf ( "(ERROR! expected 0x%04X)\n",hcs );
+		ret=1;
+	}
+//printf("HCS:\t0x%02X",reverse_endian32(hd->hcs));
+	printf ( "Load address:\t0x%08X\n", reverse_endian32 ( hd->ldaddress ) ); //FixMe:
+	printf ( "HNW:\t\t0x%04X\n",reverse_endian16 ( hd->her_znaet_chto ) ); //Hell knows what
+	printf ( "CRC:\t\t0x%08X\n",reverse_endian32 ( hd->crc ) );
+	printf ( "=== Binary Header Dump===\n" );
+	int i,j;
+	uint8_t* head = ( uint8_t* ) hd;
+	for ( i=0;i<=sizeof ( ldr_header_t );i++ )
+	{
+		if ( i % 8==0 )
+			printf ( "\n" );
+		printf ( "0x%02x   ",head[i] );
+	}
+	printf ( "\n\n== End Of Header dump ==\n" );
+	return ret;
+}
+
+
+void print_copyright()
+{
+	printf ( "Part of bcm-utils package ver. " UTIL_VERSION " \n" );
+	printf ( "Copyright (C) 2009  Andrew 'Necromant' Andrianov\n"
+	         "This is free software, and you are welcome to redistribute it\n"
+	         "under certain conditions. See COPYING for details\n" );
+}
diff --git a/tools/firmware-utils/src/bcmalgo.h b/tools/firmware-utils/src/bcmalgo.h
new file mode 100644
index 0000000000..46647cf6d3
--- /dev/null
+++ b/tools/firmware-utils/src/bcmalgo.h
@@ -0,0 +1,83 @@
+#ifndef bcmutils_H
+#define bcmutils_H
+
+typedef struct
+{
+	uint16_t magic;
+	uint16_t control;
+	uint16_t rev_maj;
+	uint16_t rev_min;
+	uint32_t build_date;
+	uint32_t filelen;
+	uint32_t ldaddress;
+	char filename[64];
+	uint16_t hcs;
+	uint16_t her_znaet_chto; //v dushe ne ebu
+	uint32_t crc;
+} ldr_header_t;
+
+
+/**
+ * Reverses endianess of a 32bit int, if the ENDIAN_REVERSE_NEEDED defined at compile-time
+ * @param data
+ * @return
+ */
+uint32_t reverse_endian32 ( uint32_t data );
+
+/**
+ * Reverses endianess of a 16bit int, if the ENDIAN_REVERSE_NEEDED defined at compile-time
+ * @param data
+ * @return
+ */
+uint16_t reverse_endian16 ( uint16_t data );
+/**
+ * Calculates the strange crc (used by bcm modems) of the file. Thnx fly out to Vector for the algorithm.
+ * @param filename
+ * @return
+ */
+uint32_t get_file_crc ( char* filename );
+
+/**
+ * Calculates HCS of the header.
+ * @param hd
+ * @return
+ */
+uint16_t get_hcs ( ldr_header_t* hd );
+
+/**
+ * Constructs the header of the image with the information given It also automagically calculates HCS and writes it there.
+ * @param magic - magic device bytes
+ * @param rev_maj - major revision
+ * @param rev_min - minor revision
+ * @param build_date - build date (seconds from EPOCH UTC)
+ * @param filelen - file length in bytes
+ * @param ldaddress - Load adress
+ * @param filename - filename
+ * @param crc_data - the crc of the data
+ * @return
+ */
+ldr_header_t* construct_header ( uint32_t magic, uint16_t rev_maj,uint16_t rev_min, uint32_t build_date, uint32_t filelen, uint32_t ldaddress, const char* filename, uint32_t crc_data );
+
+/**
+ * Dumps header information to stdout.
+ * @param hd
+ */
+int dump_header ( ldr_header_t* hd );
+
+
+/**
+ * Returns a null terminated string describing what the control number meens
+ * DO NOT FREE IT!!!
+ * @param control
+ * @return
+ */
+char* get_control_info ( uint16_t control );
+#endif
+
+/**
+ * Calculates bcmCRC of a data buffer.
+ * @param filebuffer - pointer to buffer
+ * @param size - buffer size
+ * @return
+ */
+uint32_t get_buffer_crc ( char* filebuffer, size_t size );
diff --git a/tools/firmware-utils/src/hcsmakeimage.c b/tools/firmware-utils/src/hcsmakeimage.c
new file mode 100644
index 0000000000..603ea882b1
--- /dev/null
+++ b/tools/firmware-utils/src/hcsmakeimage.c
@@ -0,0 +1,181 @@
+#include <stdlib.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <string.h>
+#include <getopt.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <libgen.h>
+#include "bcmalgo.h"
+
+
+int flag_print_version;
+int flag_print_help;
+int flag_compress;
+
+uint16_t sa2100_magic  = 0x2100;
+uint16_t sa3349_magic  = 0x3349;
+uint32_t default_date = 0x00000000; //A long time ago in a galaxy far far away....
+uint32_t default_load_address = 0x80010000; //The default load_address for the firmware image
+
+static void print_help ( const char* ename )
+{
+	printf ( "Firmware image packer and calculator for broadcom-based modems.\n" );
+	printf ( "Part of bcm-utils package.\n" );
+	printf ( "(c) 2009 Necromant (http://necromant.ath.cx). Thanks to Luke-jr for his initial work.\n" );
+	printf ( "usage: %s [options]\n", ename );
+	printf ( "Valid options are:\n" );
+	printf ( "--magic_bytes=value \t- specify magic bytes at the beginning of the image. default - 3349\n" );
+	printf ( "\t\t\t these can be sa2100 (for DPC2100 modem),\n\t\t\t sa3349 (haxorware guys use this one for some reason),\n\t\t\t or a custom hex value e.g. 0xFFFF\n" );
+	printf ( "--compress \t\t - Make use of LZMA (weird!) compression (Doesn't work yet).\n" );
+	printf ( "--rev_maj=value\t\t - major revision number. default 0\n" );
+	printf ( "--rev_min=value\t\t - minor revision number default 0\n" );
+	printf ( "--filename=value\t - use this filename in header instead of default (input filename)\n" );
+	printf ( "--ldaddress=value\t - hex value of the target load address. defaults to 0x80010000\n" );
+	printf ( "--input_file=value\t - What file are we packing?\n" );
+	printf ( "--output_file=value\t - What file shall we write? (default: image.bin)\n" );
+#ifdef _HAX0RSTYLE
+	printf ( "--credz\t - Give some credz!\n" );
+#endif
+	printf ( "\n" );
+}
+
+
+int main ( int argc, char** argv )
+{
+	if ( argc<2 )
+	{
+		print_help ( argv[0] );
+	}
+
+	static struct option long_options[] =
+	{
+		{"magic_bytes",          required_argument,   0,        'm'},
+		{"rev_maj",        required_argument,   0,      'j'},
+		{"rev_min",       required_argument,   0,     'n'},
+		{"ldaddress",       required_argument,   0,     'l'},
+		{"filename",       required_argument,   0,     'f'},
+		{"input_file",       required_argument,   0,     'i'},
+		{"output_file",       required_argument,   0,     'o'},
+		{"compress",     no_argument,       &flag_compress,    'c'},
+		{"version",     no_argument,       &flag_print_version,    'v'},
+		{"help",        no_argument,       &flag_print_help,    'h'},
+		{0, 0, 0, 0}
+	};
+	int option_index = 0;
+	int opt_result=0;
+	char* filename=NULL;
+	char* input=NULL;
+	char* magic=NULL;
+	char* major=NULL;
+	char* minor=NULL;
+	char* ldaddr=NULL;
+	char* output=NULL;
+
+	while ( opt_result>=0 )
+	{
+		opt_result = getopt_long ( argc, argv, "m:j:n:f:i:o:vh", long_options, &option_index );
+		switch ( opt_result )
+		{
+			case 0:
+				printf ( "o!\n" );
+				break;
+			case 'h':
+				print_help ( argv[0] );
+				break;
+			case 'l':
+				ldaddr=optarg;
+				break;
+			case 'f':
+				filename=optarg;
+				break;
+			case 'i':
+				input=optarg;
+				break;
+			case 'o':
+				output=optarg;
+				break;
+			case 'm':
+				magic=optarg;
+				break;
+			case 'j':
+				major=optarg;
+				break;
+			case 'n':
+				minor=optarg;
+				break;
+		}
+	}
+	if ( input==NULL )
+	{
+		printf ( "Telepaths are still on holidays. I guess you should tell me what file should I process.\n\n" );
+		exit ( 1 );
+	}
+	if ( access ( input,R_OK ) !=0 )
+	{
+		printf ( "I cannot access the file %s. Is it there? Am I allowed?\n\n", input );
+		exit ( 1 );
+	}
+	uint32_t magicnum=sa2100_magic;
+
+	if ( magic )
+	{
+		if ( strcmp ( magic,"sa2100" ) ==0 ) magicnum=sa2100_magic; else
+				if ( strcmp ( magic,"sa3349" ) ==0 ) magicnum=sa3349_magic; else
+			{
+				sscanf ( magic, "0x%04X", &magicnum );
+			}
+	}
+	unsigned int majrev=0;
+	if ( major )
+	{
+		sscanf ( major, "%d", &majrev );
+	}
+	unsigned int minrev=0;
+	if ( minor )
+	{
+		sscanf ( minor, "%d", &minrev );
+	}
+	uint32_t ldaddress = default_load_address;
+	if ( ldaddr )
+	{
+		sscanf ( ldaddr, "0x%08X", &ldaddress );
+	}
+	char* dupe = strdup(input);
+	char* fname = basename ( dupe );
+	if ( filename )
+	{
+		fname = filename;
+	}
+	struct timeval tm;
+	gettimeofday ( &tm,NULL );
+	struct stat buf;
+	stat ( input,&buf );
+	ldr_header_t* head = construct_header ( magicnum, (uint16_t) majrev, (uint16_t) minrev, ( uint32_t ) tm.tv_sec, ( uint32_t ) buf.st_size, ldaddress, fname, get_file_crc ( input ) );
+	free(dupe);
+	//uint32_t magic, uint16_t rev_maj,uint16_t rev_min, uint32_t build_date, uint32_t filelen, uint32_t ldaddress, const char* filename, uint32_t crc
+	//FILE* fd = fopen ("/tftpboot/haxorware11rev32.bin","r");
+	//fread(head,sizeof(ldr_header_t),1,fd);
+	char* filebuffer = malloc ( buf.st_size+10 );
+	FILE* fd = fopen ( input,"r" );
+	fread ( filebuffer, 1, buf.st_size,fd );
+	if (!output)
+		{
+		output = malloc(strlen(input+5));
+		strcpy(output,input);
+		strcat(output,".bin");
+		}
+	dump_header ( head );
+	FILE* fd_out = fopen ( output,"w+" );
+	if (!fd_out)
+		{
+		fprintf(stderr, "Failed to open output file: %s\n", output);
+		exit(1);
+		}
+	fwrite ( head,1,sizeof ( ldr_header_t ),fd_out );
+	fwrite ( filebuffer,1,buf.st_size,fd_out );
+	printf("Firmware image %s is ready\n", output);
+	return 0;
+}