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Add Long File Name (VFAT) entry to the Mass Storage class bootloader, so that systems such as Linux that load a VFAT filesystem driver instead of the legacy MSDOS filesystem do not corrupt the volume by trying to write a LFN entry.

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This commit is contained in:
Dean Camera 2013-03-25 20:58:33 +00:00
parent 654217548b
commit 169f21fbb1
2 changed files with 114 additions and 27 deletions
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71
Bootloaders/MassStorage/Lib/VirtualFAT.c
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@ -72,33 +72,68 @@ static const FATBootBlock_t BootBlock =
};
/** FAT 8.3 style directory entry, for the virtual FLASH contents file. */
static FATDirectoryEntry_t FirmwareFileEntries[2] =
static FATDirectoryEntry_t FirmwareFileEntries[] =
{
/* Root volume label entry; disk label is contained in the Filename and
* Extension fields (concatenated) with a special attribute flag - other
* fields are ignored. Should be the same as the label in the boot block.
*/
{
.Filename = "LUFA BOO",
.Extension = "T ",
.Attributes = (1 << 3),
.Reserved = {0},
.CreationTime = 0,
.CreationDate = 0,
.StartingCluster = 0,
.FileSizeBytes = 0,
.MSDOS =
{
.Filename = "LUFA BOO",
.Extension = "T ",
.Attributes = FAT_FLAG_VOLUME_NAME,
.Reserved = {0},
.CreationTime = 0,
.CreationDate = 0,
.StartingCluster = 0,
.FileSizeBytes = 0,
}
},
/* File entry for the virtual Firmware image. */
/* VFAT Long File Name entry for the virtual firmware file; required to
* prevent corruption of systems that are unable to detect the device
* as being a legacy MSDOS style FAT12 volume to prevent corruption. */
{
.Filename = "FIRMWARE",
.Extension = "BIN",
.Attributes = 0,
.Reserved = {0},
.CreationTime = FAT_TIME(1, 1, 0),
.CreationDate = FAT_DATE(14, 2, 1989),
.StartingCluster = 2,
.FileSizeBytes = FIRMWARE_FILE_SIZE_BYTES,
.VFAT =
{
.Ordinal = FAT_ORDINAL_LAST_ENTRY | 1,
.Attribute = FAT_FLAG_LONG_FILE_NAME,
.Reserved1 = 0,
.Reserved2 = 0,
.Checksum = 0x57,
.Unicode1 = 'F',
.Unicode2 = 'I',
.Unicode3 = 'R',
.Unicode4 = 'M',
.Unicode5 = 'W',
.Unicode6 = 'A',
.Unicode7 = 'R',
.Unicode8 = 'E',
.Unicode9 = '.',
.Unicode10 = 'B',
.Unicode11 = 'I',
.Unicode12 = 'N',
.Unicode13 = 0,
}
},
/* MSDOS file entry for the virtual Firmware image. */
{
.MSDOS =
{
.Filename = "FIRMWARE",
.Extension = "BIN",
.Attributes = 0,
.Reserved = {0},
.CreationTime = FAT_TIME(1, 1, 0),
.CreationDate = FAT_DATE(14, 2, 1989),
.StartingCluster = 2,
.FileSizeBytes = FIRMWARE_FILE_SIZE_BYTES,
}
},
};