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Corrections and debug channel in the Incomplete Mass Storage class bootloader.

This commit is contained in:
Dean Camera 2013-03-09 07:49:46 +00:00
parent 4753528b9e
commit f0c7a11670
5 changed files with 65 additions and 42 deletions
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68
Bootloaders/Incomplete/MassStorage/Lib/VirtualFAT.c
View File

@ -30,22 +30,31 @@
#include "VirtualFAT.h"
#define FAT_TIME(h, m, s) ((h << 11) | (m << 5) | (s >> 1))
#define FAT_DATE(d, m, y) (((y - 1980) << 9) | (m << 5) | (d << 0))
#define SECTOR_SIZE_BYTES VIRTUAL_MEMORY_BLOCK_SIZE
#define SECTOR_PER_CLUSTER 4
#define CLUSTER_SIZE_BYTES (SECTOR_PER_CLUSTER * SECTOR_SIZE_BYTES)
#define FILE_CLUSTERS(size) (size / CLUSTER_SIZE_BYTES)
static const FATBootBlock_t BootBlock =
{
.Bootstrap = {0xEB, 0x3C, 0x90},
.Description = "mkdosfs",
.BlockSize = VIRTUAL_MEMORY_BLOCK_SIZE,
.BlocksPerAllocationUnit = ALLOCATION_UNIT_BLOCKS,
.ReservedBlocks = 1,
.SectorSize = SECTOR_SIZE_BYTES,
.SectorsPerCluster = SECTOR_PER_CLUSTER,
.ReservedSectors = 1,
.FATCopies = 2,
.RootDirectoryEntries = 512,
.TotalBlocks16 = LUN_MEDIA_BLOCKS,
.RootDirectoryEntries = SECTOR_SIZE_BYTES / sizeof(FATDirectoryEntry_t),
.TotalSectors16 = LUN_MEDIA_BLOCKS,
.MediaDescriptor = 0xF8,
.BlocksPerFAT = 1,
.BlocksPerTrack = 32,
.SectorsPerFAT = 1,
.SectorsPerTrack = 32,
.Heads = 64,
.HiddenBlocks = 0,
.TotalBlocks32 = 0,
.HiddenSectors = 0,
.TotalSectors32 = 0,
.PhysicalDriveNum = 0,
.ExtendedBootRecordSig = 0x29,
.VolumeSerialNumber = 0x12345678,
@ -57,14 +66,14 @@ static const FATBootBlock_t BootBlock =
static FATDirectoryEntry_t FirmwareFileEntry =
{
.Filename = "Firmware",
.Extension = "bin",
.Filename = "FIRMWARE",
.Extension = "BIN",
.Attributes = 0,
.Reserved = {0},
.CreationTime = (1 << 11) | (1 << 5),
.CreationDate = (9 << 9) | (2 << 5) | (14 << 0),
.StartingCluster = 4,
.FileSize = (FLASHEND + 1UL),
.CreationTime = FAT_TIME(1, 1, 0),
.CreationDate = FAT_DATE(14, 2, 1989),
.StartingCluster = 2,
.FileSizeBytes = 2049,
};
static void WriteBlock(uint16_t BlockNumber)
@ -78,6 +87,7 @@ static void WriteBlock(uint16_t BlockNumber)
Endpoint_Read_Stream_LE(BlockBuffer, sizeof(BlockBuffer), NULL);
Endpoint_ClearOUT();
printf("WRITE %d\r\n", BlockNumber);
// TODO: Write to FLASH
}
@ -86,41 +96,49 @@ static void ReadBlock(uint16_t BlockNumber)
uint8_t BlockBuffer[512];
memset(BlockBuffer, 0x00, sizeof(BlockBuffer));
printf("READ %d", BlockNumber);
switch (BlockNumber)
{
case 0:
memcpy(BlockBuffer, &BootBlock, sizeof(FATBootBlock_t));
printf(" <B>\r\n");
break;
case 1:
case 2:
printf(" <F>\r\n");
/* Cluster 0: Media type/Reserved */
((uint16_t*)&BlockBuffer)[0] = 0xFF00 | BootBlock.MediaDescriptor;
/* Cluster 1: Reserved */
((uint16_t*)&BlockBuffer)[1] = 0xFFFF;
/* Cluster 2: Reserved */
((uint16_t*)&BlockBuffer)[2] = 0xFFFF;
/* Cluster 3: FIRMWARE.BIN File Entry */
((uint16_t*)&BlockBuffer)[3] = 0xFFFF;
/* Cluster 4 onwards: Cluster chain of FIRMWARE.BIN */
for (uint16_t i = 0; i < ((FLASHEND + 1) / (VIRTUAL_MEMORY_BLOCK_SIZE * ALLOCATION_UNIT_BLOCKS)); i++)
/* Cluster 2 onwards: Cluster chain of FIRMWARE.BIN */
for (uint16_t i = 0; i < FILE_CLUSTERS(2049); i++)
{
((uint16_t*)&BlockBuffer)[i + 4] = i + 5;
((uint16_t*)&BlockBuffer)[i + 2] = i + 3;
}
/* Mark last cluster as end of file */
((uint16_t*)&BlockBuffer)[((FLASHEND + 1) / (VIRTUAL_MEMORY_BLOCK_SIZE * ALLOCATION_UNIT_BLOCKS)) + 4] = 0xFFFF;
((uint16_t*)&BlockBuffer)[FILE_CLUSTERS(2049) + 3] = 0xFFFF;
break;
case 3:
printf("<R>\r\n");
memcpy(BlockBuffer, &FirmwareFileEntry, sizeof(FATDirectoryEntry_t));
break;
default:
if ((BlockNumber >= 4) && (BlockNumber < (4 + FILE_CLUSTERS(FIRMWARE_FILE_SIZE))))
{
printf("<D>\r\n");
for (uint16_t i = 0; i < 512; i++)
BlockBuffer[i] = '0' + BlockNumber; //A' + (i % 26);
}
break;
}

32
Bootloaders/Incomplete/MassStorage/Lib/VirtualFAT.h
View File

@ -39,26 +39,28 @@
/* Macros: */
#define VIRTUAL_MEMORY_BLOCK_SIZE 512
#define ALLOCATION_UNIT_BLOCKS 4
#define LUN_MEDIA_BLOCKS ((FLASHEND + 1) / VIRTUAL_MEMORY_BLOCK_SIZE) + 16
#define FIRMWARE_FILE_SIZE (FLASHEND + 1UL)
#define LUN_MEDIA_BLOCKS ((FIRMWARE_FILE_SIZE / VIRTUAL_MEMORY_BLOCK_SIZE) + 32)
/* Type Definitions: */
typedef struct
{
uint8_t Bootstrap[3];
uint8_t Description[8];
uint16_t BlockSize;
uint8_t BlocksPerAllocationUnit;
uint16_t ReservedBlocks;
uint16_t SectorSize;
uint8_t SectorsPerCluster;
uint16_t ReservedSectors;
uint8_t FATCopies;
uint16_t RootDirectoryEntries;
uint16_t TotalBlocks16;
uint16_t TotalSectors16;
uint8_t MediaDescriptor;
uint16_t BlocksPerFAT;
uint16_t BlocksPerTrack;
uint16_t SectorsPerFAT;
uint16_t SectorsPerTrack;
uint16_t Heads;
uint32_t HiddenBlocks;
uint32_t TotalBlocks32;
uint32_t HiddenSectors;
uint32_t TotalSectors32;
uint16_t PhysicalDriveNum;
uint8_t ExtendedBootRecordSig;
uint32_t VolumeSerialNumber;
@ -70,14 +72,14 @@
typedef struct
{
uint8_t Filename[8];
uint8_t Extension[3];
uint8_t Attributes;
uint8_t Reserved[10];
uint8_t Filename[8];
uint8_t Extension[3];
uint8_t Attributes;
uint8_t Reserved[10];
uint16_t CreationTime;
uint16_t CreationDate;
uint16_t StartingCluster;
uint32_t FileSize;
uint32_t FileSizeBytes;
} FATDirectoryEntry_t;
/* Function Prototypes: */

2
Bootloaders/Incomplete/MassStorage/MassStorage.c
View File

@ -95,6 +95,8 @@ void SetupHardware(void)
/* Hardware Initialization */
LEDs_Init();
Serial_Init(9600, false);
Serial_CreateStream(NULL);
USB_Init();
}

1
Bootloaders/Incomplete/MassStorage/MassStorage.h
View File

@ -48,6 +48,7 @@
#include "Lib/SCSI.h"
#include <LUFA/Drivers/Board/LEDs.h>
#include <LUFA/Drivers/Peripheral/Serial.h>
#include <LUFA/Drivers/USB/USB.h>
/* Macros: */

4
Bootloaders/Incomplete/MassStorage/makefile
View File

@ -14,11 +14,11 @@
MCU = at90usb1287
ARCH = AVR8
BOARD = USBKEY
F_CPU = 8000000
F_CPU = 16000000
F_USB = $(F_CPU)
OPTIMIZATION = s
TARGET = MassStorage
SRC = $(TARGET).c Descriptors.c Lib/SCSI.c Lib/VirtualFAT.c $(LUFA_SRC_USB) $(LUFA_SRC_USBCLASS)
SRC = $(TARGET).c Descriptors.c Lib/SCSI.c Lib/VirtualFAT.c $(LUFA_SRC_USB) $(LUFA_SRC_USBCLASS) $(LUFA_SRC_SERIAL)
LUFA_PATH = ../../../LUFA
CC_FLAGS = -DUSE_LUFA_CONFIG_HEADER -IConfig/ -DBOOT_START_ADDR=$(BOOT_START_OFFSET)
LD_FLAGS = -Wl,--section-start=.text=$(BOOT_START_OFFSET) $(BOOT_API_LD_FLAGS)