started development of bootstrap flashing code load

BaS_gcc/Makefile

@@ -63,6 +63,7 @@ CSRCS= \
 	$(SRCDIR)/mmc.c \
 	$(SRCDIR)/unicode.c \
 	$(SRCDIR)/ff.c \
+	$(SRCDIR)/sd_card.c \
 	$(SRCDIR)/wait.c
 
 ASRCS= \

BaS_gcc/bas.lk.in

@@ -34,6 +34,7 @@ SECTIONS
 		objs/unicode.o(.text)
 		objs/mmc.o(.text)
 		objs/ff.o(.text)
+		objs/sd_card.o(.text)
 		objs/bas_printf.o(.text)
 		objs/printf_helper.o(.text)
 		objs/cache.o(.text)

BaS_gcc/include/sd_card.h

@@ -33,12 +33,7 @@
 #include <MCF5475.h>
 #include <stdint.h>
 
-extern void spi_init(void);
+extern void sd_card_init(void);
-extern uint32_t sd_com(uint32_t data);
-extern void sd_card_idle(void);
-extern uint8_t sd_card_get_status(void);
-extern uint8_t spi_send_byte(uint8_t byte);
-extern uint16_t spi_send_word(uint16_t word);
 
 /* MMC card type flags (MMC_GET_TYPE) */
 #define CT_MMC		0x01		/* MMC ver 3 */

BaS_gcc/sources/BaS.c

@@ -29,7 +29,7 @@
 #include "cache.h"
 #include "bas_printf.h"
 #include "bas_types.h"
-#include "sd_card.h"
+#include <sd_card.h>
 #include <wait.h>
 
 #include <diskio.h>
@@ -176,53 +176,12 @@ void BaS(void)
 	uint8_t *src;
 	uint8_t *dst = (uint8_t *)TOS;
 	uint32_t *adr;
-	DRESULT res;
-	FATFS fs;
-	FRESULT fres;
 
 	pic_init();
 	nvram_init();
-	disk_initialize(0);
-	res = disk_status(0);
-	xprintf("disk status of SD card is %d\r\n", res);
-	if (res == RES_OK)
-	{
-		fres = f_mount(0, &fs);
-		xprintf("mount status of SD card fs is %d\r\n", fres);
-		if (fres == FR_OK)
-		{
-			DIR directory;
-			FIL file;
 
-			fres = f_opendir(&directory, "\\");
+	sd_card_init();
-			if (fres == FR_OK)
-			{
-				FILINFO fi;
 
-				while (((fres = f_readdir(&directory, &fi)) == FR_OK) && fi.fname[0])
-				{
-					xprintf("%13.13s %d\r\n", fi.fname, fi.fsize);
-				}
-			}
-			else
-			{
-				xprintf("could not open directory \"\\\" on SD-card! Error code: %d\r\n", fres);
-			}
-
-			fres = f_open(&file, "WELCOME.MSG", FA_READ);
-			if (fres == FR_OK)
-			{
-				char line[128];
-
-				while (f_gets(line, sizeof(line), &file))
-				{
-					xprintf("%s", line);
-				}
-			}
-			f_close(&file);
-		}
-		f_mount(0, 0L);	/* release work area */
-	}
 	xprintf("copy EmuTOS: ");
 
 	/* copy EMUTOS */

BaS_gcc/sources/sd_card.c

@@ -0,0 +1,78 @@
+/*
+ * sd_card.c
+ *
+ *  Created on: 16.12.2012
+ *      Author: mfro
+ */
+#include <sd_card.h>
+#include <diskio.h>
+#include <ff.h>
+#include <bas_printf.h>
+
+#define WELCOME_NAME	"WELCOME.MSG"
+#define FLASHCODE_NAME	"BASFLASH.BIN"
+
+void sd_card_init(void)
+{
+	DRESULT res;
+	FATFS fs;
+	FRESULT fres;
+
+	disk_initialize(0);
+	res = disk_status(0);
+	xprintf("disk status of SD card is %d\r\n", res);
+	if (res == RES_OK)
+	{
+		fres = f_mount(0, &fs);
+		xprintf("mount status of SD card fs is %d\r\n", fres);
+		if (fres == FR_OK)
+		{
+			DIR directory;
+			FIL file;
+
+			fres = f_opendir(&directory, "\\");
+			if (fres == FR_OK)
+			{
+				FILINFO fi;
+
+				while (((fres = f_readdir(&directory, &fi)) == FR_OK) && fi.fname[0])
+				{
+					xprintf("%13.13s %d\r\n", fi.fname, fi.fsize);
+				}
+			}
+			else
+			{
+				xprintf("could not open directory \"\\\" on SD-card! Error code: %d\r\n", fres);
+			}
+
+			fres = f_open(&file, WELCOME_NAME, FA_READ);
+			if (fres == FR_OK)
+			{
+				char line[128];
+
+				while (f_gets(line, sizeof(line), &file))
+				{
+					xprintf("%s", line);
+				}
+			}
+			f_close(&file);
+
+			/*
+			 * let's see if we find our boot flashing executable on disk
+			 */
+			fres = f_open(&file, FLASHCODE_NAME, FA_READ);
+			if (fres == FR_OK)
+			{
+				/*
+				 * yes, load and execute it
+				 *
+				 * FIXME: we will need some kind of user confirmation here
+				 * to avoid unwanted flashing or "bootsector viruses" before going productive
+				 */
+
+			}
+			f_close(&file);
+		}
+		f_mount(0, 0L);	/* release work area */
+	}
+}