Add cross platform method of building in a binary!

Gordon Hollingworth
1 parent 1bb4c2da
Showing 2 changed files with 73 additions and 5 deletions
Makefile
bin2c.c
 rpiboot: main.c msd/bootcode.h msd/start.h
 	$(CC) -Wall -Wextra -g -o $@ $< -lusb-1.0
  
-%.h: %.bin
-	xxd -i $< > $@
+%.h: %.bin ./bin2c
+	./bin2c $< $@
  
-%.h: %.elf
-	xxd -i $< > $@
+%.h: %.elf ./bin2c
+	./bin2c $< $@
+
+bin2c: bin2c.c
+	$(CC) -Wall -Wextra -g -o $@ $<
  
 uninstall:
 	rm -f /usr/bin/rpiboot
@@ -15,6 +18,6 @@ uninstall:
 	rmdir --ignore-fail-on-non-empty /usr/share/rpiboot/
  
 clean: 
-	rm -f rpiboot
+	rm -f rpiboot msd/*.h bin2c
  
 .PHONY: uninstall clean
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdint.h>
+
+int main(int argc, char * argv[])
+{
+	FILE * fp_in, * fp_out;
+	unsigned int length, left;
+	char fname[256], * p;
+	uint8_t buffer[256];
+
+	if(argc != 3)
+	{
+		printf("Usage: %s <binary file> <c file>\n", argv[0]);
+		exit(-1);
+	}
+
+	fp_in = fopen(argv[1], "rb");
+	if(fp_in == NULL)
+	{
+		printf("Failed to open file %s for reading\n", argv[1]);
+		exit(-1);
+	}
+
+	fp_out = fopen(argv[2], "wt");
+	if(fp_out == NULL)
+	{
+		printf("Failed to open file %s for output\n", argv[2]);
+		exit(-1);
+	}
+
+	fseek(fp_in, 0, SEEK_END);
+	length = ftell(fp_in);
+	fseek(fp_in, 0, SEEK_SET);
+	left = length;
+
+	fprintf(fp_out, "/* Automatically generated file from %s */\n", argv[1]);
+	strcpy(fname, argv[1]);
+	for(p = fname; *p; p++)
+		if(!isalnum(*p))
+			*p = '_';
+	fprintf(fp_out, "unsigned int %s_len = %d;\n", fname, length);
+	fprintf(fp_out, "unsigned char %s[] = {\n\t", fname);
+
+	while(left)
+	{
+		int to_read = left < sizeof(buffer) ? left : sizeof(buffer);
+		int bytes = fread(buffer, 1, to_read, fp_in);
+		int i;
+	
+		for(i = 0; i < bytes; i++)
+			fprintf(fp_out, "0x%02x%s", buffer[i], (i % 16) == 15 ? ",\n\t" : ", ");
+			
+		left -= bytes;
+	}
+
+	fprintf(fp_out, "\n\t};\n");
+
+	fclose(fp_in);
+	fclose(fp_out);
+
+	return 0;
+}