[sd tools] Utilize sd_file_read better

Additionally fix a long standing fread/fwrite bug, via a FatFS fix.
(Doesn't affect Tegra arch though)

bootloader/hos/hos_config.c

@@ -29,45 +29,38 @@
 //#define DPRINTF(...) gfx_printf(&gfx_con, __VA_ARGS__)
 #define DPRINTF(...)
 
+extern void *sd_file_read(const char *path, u32 *fsize);
+
 static int _config_warmboot(launch_ctxt_t *ctxt, const char *value)
 {
-	FIL fp;
-	if (f_open(&fp, value, FA_READ) != FR_OK)
+	ctxt->warmboot = sd_file_read(value, &ctxt->warmboot_size);
+	if (!ctxt->warmboot)
 		return 0;
-	ctxt->warmboot_size = f_size(&fp);
-	ctxt->warmboot = malloc(ctxt->warmboot_size);
-	f_read(&fp, ctxt->warmboot, ctxt->warmboot_size, NULL);
-	f_close(&fp);
+	
 	return 1;
 }
 
 static int _config_secmon(launch_ctxt_t *ctxt, const char *value)
 {
-	FIL fp;
-	if (f_open(&fp, value, FA_READ) != FR_OK)
+	ctxt->secmon = sd_file_read(value, &ctxt->secmon_size);
+	if (!ctxt->secmon)
 		return 0;
-	ctxt->secmon_size = f_size(&fp);
-	ctxt->secmon = malloc(ctxt->secmon_size);
-	f_read(&fp, ctxt->secmon, ctxt->secmon_size, NULL);
-	f_close(&fp);
+
 	return 1;
 }
 
 static int _config_kernel(launch_ctxt_t *ctxt, const char *value)
 {
-	FIL fp;
-	if (f_open(&fp, value, FA_READ) != FR_OK)
+	ctxt->kernel = sd_file_read(value, &ctxt->kernel_size);
+	if (!ctxt->kernel)
 		return 0;
-	ctxt->kernel_size = f_size(&fp);
-	ctxt->kernel = malloc(ctxt->kernel_size);
-	f_read(&fp, ctxt->kernel, ctxt->kernel_size, NULL);
-	f_close(&fp);
+
 	return 1;
 }
 
 static int _config_kip1(launch_ctxt_t *ctxt, const char *value)
 {
-	FIL fp;
+	u32 size;
 
 	if (!memcmp(value + strlen(value) - 1, "*", 1))
 	{
@@ -90,18 +83,18 @@ static int _config_kip1(launch_ctxt_t *ctxt, const char *value)
 					break;
 
 				memcpy(dir + dirlen, &filelist[i * 256], strlen(&filelist[i * 256]) + 1);
-				if (f_open(&fp, dir, FA_READ))
+
+				merge_kip_t *mkip1 = (merge_kip_t *)malloc(sizeof(merge_kip_t));
+				mkip1->kip1 = sd_file_read(dir, &size);
+				if (!mkip1->kip1)
 				{
+					free(mkip1);
 					free(dir);
 					free(filelist);
 
 					return 0;
 				}
-				merge_kip_t *mkip1 = (merge_kip_t *)malloc(sizeof(merge_kip_t));
-				mkip1->kip1 = malloc(f_size(&fp));
-				f_read(&fp, mkip1->kip1, f_size(&fp), NULL);
-				DPRINTF("Loaded kip1 from SD (size %08X)\n", f_size(&fp));
-				f_close(&fp);
+				DPRINTF("Loaded kip1 from SD (size %08X)\n", size);
 				list_append(&ctxt->kip1_list, &mkip1->link);
 
 				i++;
@@ -113,13 +106,15 @@ static int _config_kip1(launch_ctxt_t *ctxt, const char *value)
 	}
 	else
 	{
-		if (f_open(&fp, value, FA_READ))
-			return 0;
 		merge_kip_t *mkip1 = (merge_kip_t *)malloc(sizeof(merge_kip_t));
-		mkip1->kip1 = malloc(f_size(&fp));
-		f_read(&fp, mkip1->kip1, f_size(&fp), NULL);
-		DPRINTF("Loaded kip1 from SD (size %08X)\n", f_size(&fp));
-		f_close(&fp);
+		mkip1->kip1 = sd_file_read(value, &size);
+		if (!mkip1->kip1)
+		{
+			free(mkip1);
+
+			return 0;
+		}
+		DPRINTF("Loaded kip1 from SD (size %08X)\n", size);
 		list_append(&ctxt->kip1_list, &mkip1->link);
 	}
 

bootloader/ianos/ianos.c

@@ -29,7 +29,7 @@
 
 extern heap_t _heap;
 
-extern void *sd_file_read(char *path);
+extern void *sd_file_read(const char *path, u32 *fsize);
 extern bool sd_mount();
 extern void sd_unmount();
 
@@ -101,7 +101,7 @@ int ianos_loader(bool sdmount, char *path, elfType_t type, void *moduleConfig)
 		}
 	}
 
-	fileBuf = sd_file_read(path);
+	fileBuf = sd_file_read(path, NULL);
 
 	if (sdmount)
 		sd_unmount();

bootloader/libs/fatfs/diskio.c

@@ -12,6 +12,7 @@
 #include "../../storage/sdmmc.h"
 
 #define SDMMC_UPPER_BUFFER 0xB8000000
+#define DRAM_START         0x80000000
 
 extern sdmmc_storage_t sd_storage;
 
@@ -45,7 +46,7 @@ DRESULT disk_read (
 	UINT count		/* Number of sectors to read */
 )
 {
-	if ((u32)buff >= 0x90000000)
+	if ((u32)buff >= DRAM_START)
 		return sdmmc_storage_read(&sd_storage, sector, count, buff) ? RES_OK : RES_ERROR;
 	u8 *buf = (u8 *)SDMMC_UPPER_BUFFER;
 	if (sdmmc_storage_read(&sd_storage, sector, count, buf))
@@ -66,7 +67,7 @@ DRESULT disk_write (
 	UINT count			/* Number of sectors to write */
 )
 {
-	if ((u32)buff >= 0x90000000)
+	if ((u32)buff >= DRAM_START)
 		return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
 	u8 *buf = (u8 *)SDMMC_UPPER_BUFFER; //TODO: define this somewhere.
 	memcpy(buf, buff, 512 * count);

bootloader/libs/fatfs/ff.c

@@ -3790,17 +3790,16 @@ FRESULT f_read (
 	UINT rcnt, cc, csect;
 	BYTE *rbuff = (BYTE*)buff;
 
-
+	UINT br_tmp;
+	if (!br)
+		br = &br_tmp;
 	*br = 0;	/* Clear read byte counter */
 	res = validate(&fp->obj, &fs);				/* Check validity of the file object */
 	if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) {
 		EFSPRINTF("FOV");
 		LEAVE_FF(fs, res);	/* Check validity */
 	}
-	if (!(fp->flag & FA_READ)) {
-		EFSPRINTF("NOACCESS");
-		LEAVE_FF(fs, FR_DENIED);	/* Check access mode */
-	}
+	if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
 	remain = fp->obj.objsize - fp->fptr;
 	if (btr > remain) btr = (UINT)remain;		/* Truncate btr by remaining bytes */
 
@@ -3910,7 +3909,9 @@ FRESULT f_write (
 	UINT wcnt, cc, csect;
 	const BYTE *wbuff = (const BYTE*)buff;
 
-
+	UINT bw_tmp;
+	if (!bw)
+		bw = &bw_tmp;
 	*bw = 0;	/* Clear write byte counter */
 	res = validate(&fp->obj, &fs);			/* Check validity of the file object */
 	if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) {

bootloader/main.c

@@ -103,29 +103,24 @@ void sd_unmount()
 	}
 }
 
-void *sd_file_read(char *path)
+void *sd_file_read(const char *path, u32 *fsize)
 {
 	FIL fp;
 	if (f_open(&fp, path, FA_READ) != FR_OK)
 		return NULL;
 
 	u32 size = f_size(&fp);
+	if (fsize)
+		*fsize = size;
+
 	void *buf = malloc(size);
 
-	u8 *ptr = buf;
-	while (size > 0)
+	if (f_read(&fp, buf, size, NULL) != FR_OK)
 	{
-		u32 rsize = MIN(size, 512 * 8192);
-		if (f_read(&fp, ptr, rsize, NULL) != FR_OK)
-		{
-			free(buf);
-			f_close(&fp);
+		free(buf);
+		f_close(&fp);
 
-			return NULL;
-		}
-
-		ptr += rsize;
-		size -= rsize;
+		return NULL;
 	}
 
 	f_close(&fp);
@@ -847,10 +842,10 @@ void auto_launch_firmware()
 	if (!(b_cfg.boot_cfg & BOOT_CFG_FROM_LAUNCH) && h_cfg.bootwait)
 	{
 		if (bootlogoCustomEntry) // Check if user set custom logo path at the boot entry.
-			bitmap = (u8 *)sd_file_read(bootlogoCustomEntry);
+			bitmap = (u8 *)sd_file_read(bootlogoCustomEntry, NULL);
 
 		if (!bitmap) // Custom entry bootlogo not found, trying default custom one.
-			bitmap = (u8 *)sd_file_read("bootloader/bootlogo.bmp");
+			bitmap = (u8 *)sd_file_read("bootloader/bootlogo.bmp", NULL);
 
 		if (bitmap)
 		{