--- /dev/null
+/*
+ * Copyright (c) 2013 Qualcomm Atheros, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * * Neither the name of Qualcomm Atheros nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <stdio.h>
+#include <string.h>
+
+
+#define MAX_READ_SIZE 80
+
+static void crc16ccitt_init(unsigned short *uCcitt16)
+{
+ *uCcitt16 = 0xFFFF;
+}
+
+static void crc16ccitt_update(unsigned short *uCcitt16, unsigned char *pBuffer, unsigned long uBufSize)
+{
+ unsigned long i = 0;
+ unsigned long j = 0;
+
+ for(i = 0; i < uBufSize; i++)
+ {
+ for(j=0; j<3; j++)
+ {
+ *uCcitt16 = (*uCcitt16 >> 8) | (*uCcitt16 << 8);
+ *uCcitt16 ^= pBuffer[3-j];
+ *uCcitt16 ^= (*uCcitt16 & 0xFF) >> 4;
+ *uCcitt16 ^= (*uCcitt16 << 8) << 4;
+ *uCcitt16 ^= ((*uCcitt16 & 0xFF) << 4) << 1;
+ }
+ }
+}
+
+static void crc16ccitt_final(unsigned short *uCcitt16)
+{
+ *uCcitt16 = ~(*uCcitt16);
+}
+
+void write_file(unsigned short crc, unsigned short file_size, FILE *out, FILE *in)
+{
+ unsigned char buffer[MAX_READ_SIZE];
+ unsigned short size;
+
+ //set file pointer to start of the file
+ if( feof(in) )
+ fseek(in,0,SEEK_SET);
+
+ while(1)
+ {
+ size = fread(buffer, sizeof(unsigned char), sizeof(buffer), in);
+
+ if (size<MAX_READ_SIZE)
+ {
+ if( size%4==1 )
+ {
+ buffer[size] = 0x0;
+ buffer[size+1] = 0x0;
+ buffer[size+2] = 0x0;
+ size+=3;
+ }
+ else if ( size%4==2 )
+ {
+ buffer[size] = 0x0;
+ buffer[size+1] = 0x0;
+ size+=2;
+ }
+ else if ( size%4==3 )
+ {
+ buffer[size] = 0x0;
+ size+=1;
+ }
+ fwrite(buffer, sizeof(unsigned char), size, out);
+ goto ERR_DONE;
+ }
+ fwrite(buffer, sizeof(unsigned char), MAX_READ_SIZE, out);
+ }
+ERR_DONE:
+
+ fwrite(&crc, sizeof(unsigned char), sizeof(short), out);
+ fwrite(&file_size, sizeof(unsigned char), sizeof(short), out);
+
+ return;
+}
+
+
+unsigned short cal_crc(FILE *in)
+{
+ int size;
+ long file_size;
+ unsigned short crc = 0;
+ unsigned char buffer[MAX_READ_SIZE];
+
+ file_size = size = 0;
+
+ crc16ccitt_init(&crc);
+
+ while(1)
+ {
+ size = fread(buffer, sizeof(unsigned char), sizeof(buffer), in);
+ file_size += size;
+
+ if( size%4==1 )
+ {
+ buffer[size] = 0x0;
+ buffer[size+1] = 0x0;
+ buffer[size+2] = 0x0;
+ size+=3;
+ }
+ else if ( size%4==2 )
+ {
+ buffer[size] = 0x0;
+ buffer[size+1] = 0x0;
+ size+=2;
+ }
+ else if ( size%4==3 )
+ {
+ buffer[size] = 0x0;
+ size+=1;
+ }
+
+ crc16ccitt_update(&crc, (unsigned char*)buffer, size);
+
+ if (size<MAX_READ_SIZE)
+ goto ERR_DONE;
+ }
+
+ERR_DONE:
+
+ crc16ccitt_final(&crc);
+ printf(" ==> output crc 0x%04x with file size 0x%04x\n\r", crc, file_size);
+
+ return crc;
+}
+
+
+int main(int argc, char* argv[])
+{
+ FILE *in, *out;
+ int retVal;
+ int i=0;
+ unsigned short crc = 0;
+ unsigned short size = 0;
+ char input_file_name[80];
+ char output_file_name[80];
+
+ in = out = 0x0;
+
+ if( argc < 3 )
+ {
+ printf("\"imghdr [input_file] [output_file] - calculate the image and prefix to the binary \"!\n\r");
+ goto ERR_DONE;
+ }
+ strcpy(input_file_name, argv[1]);
+ strcpy(output_file_name, argv[2]);
+
+ printf("imghdr %s %s!\n\r", input_file_name, output_file_name);
+
+ if((in = fopen(input_file_name,"rb")) == NULL)
+ goto ERR_DONE;
+
+ if((out = fopen(output_file_name,"wt")) == NULL)
+ goto ERR_DONE;
+
+ crc = cal_crc(in);
+
+ fseek( in, 0, SEEK_END );
+ size = ftell(in); // get file length
+ fseek( in, 0, SEEK_SET );
+
+ printf(" ==> (2) output crc 0x%04x with file size 0x%04x\n\r", crc, size);
+ write_file(crc, size, out, in);
+
+
+ERR_DONE:
+
+ if(in) fclose(in);
+ if(out) fclose(out);
+
+ return 0;
+
+}
projects / open-ath9k-htc-firmware.git / blobdiff