Simplify stadium.c without Crystal base data

1 files changed, 19 insertions, 85 deletions

diff --git a/tools/stadium.c b/tools/stadium.c
index 796b7fc2..7f684b68 100644
--- a/tools/stadium.c
+++ b/tools/stadium.c
@@ -1,7 +1,5 @@
 #include <stdio.h>
 #include <stdlib.h>
-#include <stdbool.h>
-#include <getopt.h>
 #include <string.h>
 #include <stdint.h>
 
@@ -9,91 +7,44 @@
 
 // The Game Boy cartridge header stores a global checksum at 0x014E-0x014F
 #define GLOBALOFF 0x014E
-// "base" data; Crystal-only
-#define BASESIZE 24
 // ASCII "N64PS3" header
 #define N64PS3SIZE 6
 // N64PS3 + CRC
 #define HEADERSIZE (N64PS3SIZE + 2)
 // Checksum every half-bank
 #define CHECKSIZE 0x2000
-// The CRC initial value (also used for checksums)
-#define CRC_INIT 0xFEFE
 // The CRC polynomial value
 #define CRC_POLY 0xC387
-
-typedef enum Base { BASE_NONE, BASE_US, BASE_EU, BASE_DEBUG } Base;
-
-uint8_t us_base[BASESIZE] = {'b', 'a', 's', 'e',
-	0x01, 0x00, 0xBF, 0x6B, 0x40, 0x11, 0x00, 0x22, 0x00, 0x3A,
-	0xF3, 0x38, 0x18, 0xFF, 0xFF, 0x0F, 0x07, 0x10, 0x68, 0x07};
-
-uint8_t eu_base[BASESIZE] = {'b', 'a', 's', 'e',
-	0x01, 0x01, 0x1E, 0xCF, 0x00, 0x10, 0x00, 0x00, 0x00, 0x0C,
-	0xA3, 0x38, 0x00, 0xFF, 0xFF, 0x07, 0x00, 0x00, 0x00, 0x14};
-
-uint8_t dbg_base[BASESIZE] = {'b', 'a', 's', 'e',
-	0x01, 0x00, 0x07, 0x82, 0x40, 0x10, 0x00, 0x22, 0x00, 0x3A,
-	0xE3, 0x38, 0x00, 0xFF, 0xFF, 0x07, 0x07, 0x10, 0x68, 0x06};
+// The CRC initial value (also used for checksums)
+#define CRC_INIT 0xFEFE
 
 uint8_t n64ps3[N64PS3SIZE] = {'N', '6', '4', 'P', 'S', '3'};
 
-static void usage(void) {
-	fprintf(stderr, "Usage: stadium [-h|--help] [-b|--base us|eu|dbg] romfile\n");
-}
-
-void parse_args(int argc, char *argv[], Base *b) {
-	struct option long_options[] = {
-		{"base", required_argument, 0, 'b'},
-		{"help", no_argument, 0, 'h'},
-		{0}
-	};
-	for (int opt = 0; opt != -1;) {
-		switch (opt = getopt_long(argc, argv, "hb:", long_options)) {
-		case 'h':
-			usage();
-			exit(0);
-			break;
-		case 'b':
-			*b = !strcmp(optarg, "us") ? BASE_US :
-				!strcmp(optarg, "eu") ? BASE_EU :
-				!strcmp(optarg, "dbg") ? BASE_DEBUG :
-				BASE_NONE;
-			break;
-		case 0:
-		case -1:
-			break;
-		default:
-			usage();
-			exit(1);
-			break;
-		}
-	}
-}
-
 #define SET_U16BE(file, off, v) do { \
 	file[(off) + 0] = (uint8_t)(((v) & 0xFF00) >> 8); \
 	file[(off) + 1] = (uint8_t)(((v) & 0x00FF) >> 0); \
 } while (0)
 
-void calculate_checksums(uint8_t *file, int filesize, Base base) {
+void calculate_checksums(uint8_t *file, int filesize) {
 	int NUMCHECKS = filesize / CHECKSIZE;
 	int DATASIZE = HEADERSIZE + NUMCHECKS * 2; // 2 bytes per checksum
 	int ORIGIN = filesize - DATASIZE; // Stadium data goes at the end of the file
 
+	// Initialize the CRC table
+	uint16_t crc_table[256];
+	for (int i = 0; i < 256; i++) {
+		uint16_t c = i;
+		uint16_t rem = 0;
+		for (int y = 0; y < 8; y++) {
+			rem = (rem >> 1) ^ ((rem ^ c) & 1 ? CRC_POLY : 0);
+			c >>= 1;
+		}
+		crc_table[i] = rem;
+	}
+
 	// Clear the global checksum
 	SET_U16BE(file, GLOBALOFF, 0);
 
-	// Write the appropriate base data, or none
-	int BASEOFF = ORIGIN - BASESIZE;
-	if (base == BASE_US) {
-		memcpy(file + BASEOFF, us_base, BASESIZE);
-	} else if (base == BASE_EU) {
-		memcpy(file + BASEOFF, eu_base, BASESIZE);
-	} else if (base == BASE_DEBUG) {
-		memcpy(file + BASEOFF, dbg_base, BASESIZE);
-	}
-
 	// Initialize the Stadium data (this should be free space anyway)
 	memset(file + ORIGIN, 0, DATASIZE);
 	memcpy(file + ORIGIN, n64ps3, N64PS3SIZE);
@@ -107,18 +58,6 @@ void calculate_checksums(uint8_t *file, int filesize, Base base) {
 		SET_U16BE(file, ORIGIN + HEADERSIZE + i * 2, checksum);
 	}
 
-	// Initialize the CRC table
-	uint16_t crc_table[256];
-	for (int i = 0; i < 256; i++) {
-		uint16_t c = i;
-		uint16_t rem = 0;
-		for (int y = 0; y < 8; y++) {
-			rem = (rem >> 1) ^ ((rem ^ c) & 1 ? CRC_POLY : 0);
-			c >>= 1;
-		}
-		crc_table[i] = rem;
-	}
-
 	// Calculate the CRC of the half-bank checksums
 	uint16_t crc = CRC_INIT;
 	for (int i = ORIGIN + HEADERSIZE; i < ORIGIN + DATASIZE; i++) {
@@ -135,20 +74,15 @@ void calculate_checksums(uint8_t *file, int filesize, Base base) {
 }
 
 int main(int argc, char *argv[]) {
-	Base base = BASE_NONE;
-	parse_args(argc, argv, &base);
-
-	argc -= optind;
-	argv += optind;
-	if (argc < 1) {
-		usage();
+	if (argc != 2) {
+		fprintf(stderr, "Usage: stadium romfile\n");
 		exit(1);
 	}
 
-	char *filename = argv[0];
+	char *filename = argv[1];
 	int filesize;
 	uint8_t *file = read_u8(filename, &filesize);
-	calculate_checksums(file, filesize, base);
+	calculate_checksums(file, filesize);
 	write_u8(filename, file, filesize);
 
 	return 0;