mirror of
git://projects.qi-hardware.com/nn-usb-fpga.git
synced 2024-12-14 03:34:39 +02:00
113 lines
2.7 KiB
C
113 lines
2.7 KiB
C
/* ram_image.c by Steve Rhoads 11/7/05
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* This program take the ram_xilinx.vhd file as input
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* and the code.txt file as input.
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* It then creates ram_image.vhd as output with the
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* initialization vectors set to the contents of code.txt.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define BUF_SIZE (1024*1024)
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unsigned int swap_int (unsigned int data)
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{
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unsigned char* b=(unsigned char*)&data;
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unsigned char t;
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t=b[3]; b[3]=b[0]; b[0]=t;
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t=b[2]; b[2]=b[1]; b[1]=t;
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return data;
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}
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int main(int argc, char *argv[])
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{
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FILE *file;
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int i, j, index, size, count;
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char *buf, *ptr, *ptr_list[64*4], text[80];
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unsigned int *code;
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if(argc < 4)
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{
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printf("Usage: ram_image <in.vhd> <file.bin> <out.vhd>\n");
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printf("Usage: ram_image ram_xilinx.vhd <file.bin> ram_image.vhd\n");
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return 0;
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}
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buf = (char*)malloc(BUF_SIZE);
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code = (unsigned int*)malloc(BUF_SIZE);
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//Read ram_xilinx.vhd
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file = fopen(argv[1], "rb");
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if(file == NULL)
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{
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printf("Can't open %s!\n", argv[1]);
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return -1;
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}
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size = fread(buf, 1, BUF_SIZE, file);
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fclose(file);
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//Read binary file
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file = fopen(argv[2], "r");
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if(file == NULL)
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{
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printf("Can't open %s!\n", argv[2]);
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return -1;
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}
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for(count = 0; count < 16*1024; ++count)
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{
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if(feof(file))
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break;
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fread ( &code[count], 1, sizeof(unsigned int), file);
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}
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fclose(file);
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//Find 'INIT_00 => X"'
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ptr = buf;
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for(i = 0; i < 64*4; ++i)
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{
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sprintf(text, "INIT_%2.2X => X\"", i % 64);
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ptr = strstr(ptr, text);
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if(ptr == NULL)
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{
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printf("ERROR: Can't find '%s' in file!\n", text);
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return -1;
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}
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ptr_list[i] = ptr + strlen(text);
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}
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//Modify vhdl source code
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//ptr_list[64*4] four banks of 64 bytes: Bank0 D31-D24 Bank1 D23-D16 Bank2 D15-D8 Bank3 D7-D0
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j = 62;
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for(i = 0; i < count; ++i)
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{
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sprintf(text, "%8.8x", swap_int(code[i]));
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index = i / 32;
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ptr_list[index][j] = text[0]; // Bank0 D31- D28
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ptr_list[index][j+1] = text[1]; // Bank0 D27- D24
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ptr_list[index+64][j] = text[2]; // Bank0 D23- D20
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ptr_list[index+64][j+1] = text[3]; // Bank0 D19- D16
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ptr_list[index+128][j] = text[4]; // Bank0 D15- D12
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ptr_list[index+128][j+1] = text[5]; // Bank0 D11- D8
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ptr_list[index+192][j] = text[6]; // Bank0 D7 - D4
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ptr_list[index+192][j+1] = text[7]; // Bank0 D3 - D0
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j -= 2;
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if(j < 0)
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j = 62;
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}
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//Write ram_image.vhd
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file = fopen(argv[3], "wb");
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if(file == NULL)
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{
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printf("Can't write %s!\n", argv[3]);
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return -1;
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}
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fwrite(buf, 1, size, file);
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fclose(file);
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free(buf);
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free(code);
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return 0;
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}
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