From 7080eb13622051cb4a814aade8091caaf8c10caa Mon Sep 17 00:00:00 2001
From: sorgelig <pour.garbage@gmail.com>
Date: Wed, 18 Dec 2019 06:13:20 +0800
Subject: [PATCH] gba: add goomba emulator autoloading for gb/gbc roms.

---
 cheats.cpp                  |  9 +------
 support/arcade/romutils.cpp |  6 +----
 support/megacd/megacd.cpp   |  9 +------
 user_io.cpp                 | 54 +++++++++++++++++++++++++------------
 user_io.h                   |  1 +
 5 files changed, 41 insertions(+), 38 deletions(-)

diff --git a/cheats.cpp b/cheats.cpp
index 63bdd48..5ca8350 100644
--- a/cheats.cpp
+++ b/cheats.cpp
@@ -352,15 +352,8 @@ static void cheats_send()
 
 	user_io_set_index(255);
 
-	// prepare transmission
 	user_io_set_download(1);
-
-	EnableFpga();
-	spi8(UIO_FILE_TX_DAT);
-	spi_write(buff, pos ? pos : 2, fpga_get_fio_size());
-	DisableFpga();
-
-	// signal end of transmission
+	user_io_file_tx_write(buff, pos ? pos : 2);
 	user_io_set_download(0);
 }
 
diff --git a/support/arcade/romutils.cpp b/support/arcade/romutils.cpp
index 001c49d..51eb3d1 100644
--- a/support/arcade/romutils.cpp
+++ b/support/arcade/romutils.cpp
@@ -65,11 +65,7 @@ static int file_tx_start(unsigned char index)
 
 static int file_tx_data(const uint8_t *buf, uint16_t chunk, struct MD5Context *md5context)
 {
-	EnableFpga();
-	spi8(UIO_FILE_TX_DAT);
-
-	spi_write(buf, chunk, user_io_get_width());
-	DisableFpga();
+	user_io_file_tx_write(buf, chunk);
 
 	if (md5context) MD5Update(md5context, buf, chunk);
 #if DEBUG_ROM_BINARY
diff --git a/support/megacd/megacd.cpp b/support/megacd/megacd.cpp
index 5edd7cc..6270e84 100644
--- a/support/megacd/megacd.cpp
+++ b/support/megacd/megacd.cpp
@@ -115,15 +115,8 @@ int mcd_send_data(uint8_t* buf, int len, uint8_t index) {
 	// set index byte
 	user_io_set_index(index);
 
-	// prepare transmission of new file
 	user_io_set_download(1);
-
-	EnableFpga();
-	spi8(UIO_FILE_TX_DAT);
-	spi_write(buf, len, 1);
-	DisableFpga();
-
-	// signal end of transmission
+	user_io_file_tx_write(buf, len);
 	user_io_set_download(0);
 	return 1;
 }
diff --git a/user_io.cpp b/user_io.cpp
index c57501d..a4c2349 100644
--- a/user_io.cpp
+++ b/user_io.cpp
@@ -1552,14 +1552,9 @@ static void send_pcolchr(const char* name, unsigned char index, int type)
 		//hexdump(col_attr, sizeof(col_attr));
 
 		user_io_set_index(index);
+
 		user_io_set_download(1);
-
-		EnableFpga();
-		spi8(UIO_FILE_TX_DAT);
-		spi_write(col_attr, type ? 1024 : 1025, fio_size);
-		DisableFpga();
-
-		// signal end of transmission
+		user_io_file_tx_write(col_attr, type ? 1024 : 1025);
 		user_io_set_download(0);
 	}
 }
@@ -1619,6 +1614,14 @@ static void tx_progress(const char* name, unsigned int progress)
 	InfoMessage(progress_buf, 2000, "Loading");
 }
 
+void user_io_file_tx_write(const uint8_t *addr, uint16_t len)
+{
+	EnableFpga();
+	spi8(UIO_FILE_TX_DAT);
+	spi_write(addr, len, fio_size);
+	DisableFpga();
+}
+
 int user_io_file_tx(const char* name, unsigned char index, char opensave, char mute, char composite)
 {
 	fileTYPE f = {};
@@ -1661,10 +1664,7 @@ int user_io_file_tx(const char* name, unsigned char index, char opensave, char m
 		printf("Load SNES ROM.\n");
 		uint8_t* buf = snes_get_header(&f);
 		hexdump(buf, 16, 0);
-		EnableFpga();
-		spi8(UIO_FILE_TX_DAT);
-		spi_write(buf, 512, fio_size);
-		DisableFpga();
+		user_io_file_tx_write(buf, 512);
 
 		//strip original SNES ROM header if present (not used)
 		if (bytes2send & 512)
@@ -1682,16 +1682,36 @@ int user_io_file_tx(const char* name, unsigned char index, char opensave, char m
 	int progress = -1;
 	if (use_progress) MenuHide();
 
-	while (bytes2send)
+	int dosend = 1;
+	if (!strcasecmp(core_name, "GBA") && ((index >> 6) == 1 || (index >> 6) == 2))
+	{
+		fileTYPE fg = {};
+		if (!FileOpen(&fg, user_io_make_filepath(HomeDir, "goomba.rom")))
+		{
+			dosend = 0;
+			Info("Cannot open goomba.rom!");
+			sleep(1);
+		}
+		else
+		{
+			uint32_t sz = fg.size;
+			while (sz)
+			{
+				uint16_t chunk = (sz > sizeof(buf)) ? sizeof(buf) : sz;
+				FileReadAdv(&fg, buf, chunk);
+				user_io_file_tx_write(buf, chunk);
+				sz -= chunk;
+			}
+			FileClose(&fg);
+		}
+	}
+
+	while (dosend && bytes2send)
 	{
 		uint16_t chunk = (bytes2send > sizeof(buf)) ? sizeof(buf) : bytes2send;
 
 		FileReadAdv(&f, buf, chunk);
-
-		EnableFpga();
-		spi8(UIO_FILE_TX_DAT);
-		spi_write(buf, chunk, fio_size);
-		DisableFpga();
+		user_io_file_tx_write(buf, chunk);
 
 		if (use_progress)
 		{
diff --git a/user_io.h b/user_io.h
index 52d2c75..7d97b40 100644
--- a/user_io.h
+++ b/user_io.h
@@ -210,6 +210,7 @@ void user_io_read_confstr();
 char *user_io_get_confstr(int index);
 uint32_t user_io_8bit_set_status(uint32_t, uint32_t, int ex = 0);
 int user_io_file_tx(const char* name, unsigned char index = 0, char opensave = 0, char mute = 0, char composite = 0);
+void user_io_file_tx_write(const uint8_t *addr, uint16_t len);
 int user_io_get_width();
 
 uint32_t user_io_get_file_crc();