update(platform): update platform code

Signed-off-by: sakumisu <1203593632@qq.com>

platform/fatfs/usbh_fatfs.c

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2024, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "ff.h"
+#include "diskio.h"
+#include "usbh_core.h"
+#include "usbh_msc.h"
+
+struct usbh_msc *active_msc_class;
+
+int USB_disk_status(void)
+{
+    return RES_OK;
+}
+
+int USB_disk_initialize(void)
+{
+    active_msc_class = (struct usbh_msc *)usbh_find_class_instance("/dev/sda");
+    if (active_msc_class == NULL) {
+        printf("do not find /dev/sda\r\n");
+        return RES_NOTRDY;
+    }
+    if (usbh_msc_scsi_init(active_msc_class) < 0) {
+        return RES_NOTRDY;
+    }
+    return RES_OK;
+}
+
+int USB_disk_read(BYTE *buff, LBA_t sector, UINT count)
+{
+    return usbh_msc_scsi_read10(active_msc_class, sector, buff, count);
+}
+
+int USB_disk_write(const BYTE *buff, LBA_t sector, UINT count)
+{
+    return usbh_msc_scsi_write10(active_msc_class, sector, buff, count);
+}
+
+int USB_disk_ioctl(BYTE cmd, void *buff)
+{
+    int result = 0;
+
+    switch (cmd) {
+        case CTRL_SYNC:
+            result = RES_OK;
+            break;
+
+        case GET_SECTOR_SIZE:
+            *(WORD *)buff = active_msc_class->blocksize;
+            result = RES_OK;
+            break;
+
+        case GET_BLOCK_SIZE:
+            *(DWORD *)buff = 1;
+            result = RES_OK;
+            break;
+
+        case GET_SECTOR_COUNT:
+            *(DWORD *)buff = active_msc_class->blocknum;
+            result = RES_OK;
+            break;
+
+        default:
+            result = RES_PARERR;
+            break;
+    }
+
+    return result;
+}