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use uf2 ghotsfat

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This commit is contained in:
hathach
2018-06-21 12:22:42 +07:00
parent 85c08ee084
commit 56f126e715
5 changed files with 28 additions and 284 deletions
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1
src/segger/nrf52840_bootloader.emProject
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@@ -64,6 +64,7 @@
<folder Name="uf2">
<file file_name="../usb/uf2/uf2cfg.h" />
<file file_name="../usb/uf2/uf2.h" />
<file file_name="../usb/uf2/ghostfat.c" />
</folder>
<file file_name="../usb/msc_uf2.c" />
<file file_name="../usb/msc_uf2.h" />

294
src/usb/msc_uf2.c
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@@ -43,8 +43,6 @@
// for formatting fatfs when Softdevice is not enabled
#include "nrf_nvmc.h"
#include "uf2/uf2.h"
#define SECTORS_PER_FAT 7
#define ROOT_DIR_SECTOR 8
@@ -66,132 +64,18 @@ enum
enum { FL_PAGE_SIZE = 4096 };
/*------------------------------------------------------------------*/
/* FAT12
*------------------------------------------------------------------*/
typedef struct ATTR_PACKED {
uint8_t jump_code[3] ; ///< Assembly instruction to jump to boot code.
uint8_t oem_name[8] ; ///< OEM Name in ASCII.
// Bios Parameter Block
uint16_t sector_sz ; ///< Bytes per sector. Allowed values include 512, 1024, 2048, and 4096.
uint8_t sector_per_cluster ; ///< Sectors per cluster (data unit). Allowed values are powers of 2, but the cluster size must be 32KB or smaller.
uint16_t reserved_sectors ; ///< Size in sectors of the reserved area.
uint8_t fat_copies ; ///< Number of FATs. Typically two for redundancy, but according to Microsoft it can be one for some small storage devices.
uint16_t root_entry_count ; ///< Maximum number of files in the root directory for FAT12 and FAT16. This is 0 for FAT32 and typically 512 for FAT16.
uint16_t sector_count ; ///< 16-bit number of sectors in file system. If the number of sectors is larger than can be represented in this 2-byte value, a 4-byte value exists later in the data structure and this should be 0.
uint8_t media_type ; ///< 0xf8 should be used for fixed disks and 0xf0 for removable.
uint16_t sector_per_fat ; ///< 16-bit size in sectors of each FAT for FAT12 and FAT16. For FAT32, this field is 0.
uint16_t sector_per_track ; ///< Sectors per track of storage device.
uint16_t head_num ; ///< Number of heads in storage device.
uint32_t not_used1 ; ///< Number of sectors before the start of partition.
uint32_t not_used2 ; ///< 32-bit value of number of sectors in file system. Either this value or the 16-bit value above must be 0.
// Extended BPB
uint8_t drive_number ; ///< Physical drive number (0x00 for (first) removable media, 0x80 for (first) fixed disk
uint8_t not_used3 ; ///< Some OS uses this as drive letter (e.g 0 = C:, 1 = D: etc ...), should be 0 when formatted
uint8_t ext_boot_signature ; ///< should be 0x29
uint32_t volume_id ; ///< Volume serial number, which some versions of Windows will calculate based on the creation date and time.
uint8_t volume_label[11] ;
uint8_t fs_type[8] ; ///< File system type label in ASCII, padded with blank (0x20). Standard values include "FAT," "FAT12," and "FAT16," but nothing is required.
// uint8_t not_used4[448] ;
// uint16_t signature ; ///< Signature value (0xAA55).
}fat12_boot_sector_t;
VERIFY_STATIC(sizeof(fat12_boot_sector_t) == 62, "size is not correct");
typedef struct ATTR_PACKED {
uint8_t name[11];
ATTR_PACKED_STRUCT(struct){
uint8_t readonly : 1;
uint8_t hidden : 1;
uint8_t system : 1;
uint8_t volume_label : 1;
uint8_t directory : 1;
uint8_t archive : 1;
} attr; // Long File Name = 0x0f
uint8_t reserved;
uint8_t created_time_tenths_of_seconds;
uint16_t created_time;
uint16_t created_date;
uint16_t accessed_date;
uint16_t cluster_high;
uint16_t written_time;
uint16_t written_date;
uint16_t cluster_low;
uint32_t file_size;
}fat_dirent_t;
VERIFY_STATIC(sizeof(fat_dirent_t) == 32, "size is not correct");
typedef struct ATTR_PACKED {
uint16_t dir0 : 12;
uint16_t dir1 : 12;
}fat12_dirpair_t;
VERIFY_STATIC(sizeof(fat12_dirpair_t) == 3, "size is not correct");
/*------------------------------------------------------------------*/
/* UF2
*------------------------------------------------------------------*/
const char infoUf2File[] = //
"UF2 Bootloader " UF2_VERSION "\r\n"
"Model: " PRODUCT_NAME "\r\n"
"Board-ID: " BOARD_ID "\r\n";
const char indexFile[] = //
"<!doctype html>\n"
"<html>"
"<body>"
"<script>\n"
"location.replace(\"" INDEX_URL "\");\n"
"</script>"
"</body>"
"</html>\n";
const char readme_contents[] = "Adafruit Feather nRF52840";
struct TextFile {
const char name[11];
const char *content;
};
static const struct TextFile info[] = {
{.name = "INFO_UF2TXT", .content = infoUf2File},
{.name = "INDEX HTM", .content = indexFile},
{.name = "CURRENT UF2", .content = readme_contents},
};
void read_block(uint32_t block_no, uint8_t *data);
/*------------------------------------------------------------------*/
/* VARIABLES
*------------------------------------------------------------------*/
struct
{
// Boot sector
fat12_boot_sector_t boot;
uint8_t not_used4[448] ;
uint16_t signature ; ///< Signature value (0xAA55).
// Fat
uint8_t fat[SECTORS_PER_FAT*MSC_FLASH_BLOCK_SIZE];
// Root Dir
struct {
fat_dirent_t dirent[(ROOT_DIR_SECTOR*MSC_FLASH_BLOCK_SIZE)/32];
}root;
} _disk_ram ATTR_ALIGNED(4);
VERIFY_STATIC(sizeof(_disk_ram) == 16*MSC_FLASH_BLOCK_SIZE, "size is not correct");
static uint8_t _page_cached[FL_PAGE_SIZE] ATTR_ALIGNED(4);
volatile static uint8_t _wr10_state;
static pstorage_handle_t _fat_psh = { .module_id = 0, .block_id = MSC_FLASH_ADDR_START } ;
static pstorage_handle_t _fat_psh = { .module_id = 0, .block_id = MSC_UF2_FLASH_ADDR_START } ;
static scsi_inquiry_data_t const mscd_inquiry_data =
{
@@ -205,8 +89,8 @@ static scsi_inquiry_data_t const mscd_inquiry_data =
static scsi_read_capacity10_data_t const mscd_read_capacity10_data =
{
.last_lba = ENDIAN_BE(MSC_FLASH_BLOCK_NUM-1), // read capacity
.block_size = ENDIAN_BE(MSC_FLASH_BLOCK_SIZE)
.last_lba = ENDIAN_BE(MSC_UF2_BLOCK_NUM-1), // read capacity
.block_size = ENDIAN_BE(MSC_UF2_BLOCK_SIZE)
};
static scsi_sense_fixed_data_t mscd_sense_data =
@@ -219,9 +103,9 @@ static scsi_sense_fixed_data_t mscd_sense_data =
static scsi_read_format_capacity_data_t const mscd_format_capacity_data =
{
.list_length = 8,
.block_num = ENDIAN_BE(MSC_FLASH_BLOCK_NUM), // write capacity
.block_num = ENDIAN_BE(MSC_UF2_BLOCK_NUM), // write capacity
.descriptor_type = 2, // TODO formatted media, refractor to const
.block_size_u16 = ENDIAN_BE16(MSC_FLASH_BLOCK_SIZE)
.block_size_u16 = ENDIAN_BE16(MSC_UF2_BLOCK_SIZE)
};
static scsi_mode_parameters_t const msc_dev_mode_para =
@@ -237,7 +121,7 @@ static scsi_mode_parameters_t const msc_dev_mode_para =
*------------------------------------------------------------------*/
static inline uint32_t lba2addr(uint32_t lba)
{
return MSC_FLASH_ADDR_START + lba*MSC_FLASH_BLOCK_SIZE;
return MSC_UF2_FLASH_ADDR_START + lba*MSC_UF2_BLOCK_SIZE;
}
static void fat12_mkfs(void);
@@ -278,7 +162,6 @@ void msc_uf2_mount(void)
_wr10_state = WRITE10_IDLE;
// reset every time it is plugged
fat12_mkfs();
}
void msc_uf2_umount(void)
@@ -385,39 +268,30 @@ int32_t tud_msc_read10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t o
{
(void) rhport; (void) lun;
if ( lba < SECTOR_DATA )
// since we return block size each, offset should always be zero
TU_ASSERT(offset == 0, -1);
uint32_t count = 0;
while ( count < bufsize )
{
memcpy(buffer, ((uint8_t*) &_disk_ram) + lba*MSC_FLASH_BLOCK_SIZE, bufsize);
}
else
{
lba -= SECTOR_DATA;
read_block(lba, buffer);
if ( lba < arrcount_(info) - 1 )
{
strcpy(buffer, info[lba].content); // INFO_UF2.TXT & INDEX.HTM contents
}
else
{
lba -= (arrcount_(info) - 1);
}
lba++;
buffer += 512;
count += 512;
}
return bufsize;
return count;
}
int32_t tud_msc_write10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
{
(void) rhport; (void) lun;
uint32_t addr = lba2addr(lba) + offset;
return bufsize;
if ( lba < SECTOR_DATA )
{
memcpy(((uint8_t*) &_disk_ram) + lba*MSC_FLASH_BLOCK_SIZE, buffer, bufsize);
}
uint32_t addr = lba2addr(lba) + offset;
/* 0. Check if flash is the same as data -> skip if matches
* 1. queue flash erase pstorage_clear(), return 0 until erasing is done
@@ -495,132 +369,4 @@ int32_t tud_msc_write10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t
}
}
//--------------------------------------------------------------------+
// FAT12
//--------------------------------------------------------------------+
/* 0 ______________
* | Boot Sector | Fat copies = 1, Fat size = 7
* |_____________| Root Dir = 16*8 (4KB), sector per cluster = 1
* 1 | FAT0 |
* . | |
* . | ( 7x512 ) |
* 7 |_____________|
* 8 | Root Dir |
* . | |
* . | ( 8x512 ) |
* 15|_____________|
* 16| |
* . | |
* . | |
* . | Data |
* . | Area |
* . | |
* . | |
* |_____________|
*/
fat12_boot_sector_t const _boot_sect =
{
.jump_code = { 0xEB, 0xFE, 0x90 },
.oem_name = "MSDOS5.0",
.sector_sz = MSC_FLASH_BLOCK_SIZE,
.sector_per_cluster = 1,
.reserved_sectors = 1,
.fat_copies = 1,
.root_entry_count = (ROOT_DIR_SECTOR*MSC_FLASH_BLOCK_SIZE)/32,
.sector_count = MSC_FLASH_BLOCK_NUM,
.media_type = 0xf8, // fixed disk
.sector_per_fat = SECTORS_PER_FAT,
.sector_per_track = 1,
.head_num = 1,
.not_used1 = 0,
.not_used2 = 0,
.drive_number = 0,
.not_used3 = 0,
.ext_boot_signature = 0x29,
.volume_id = 0x00420042, // change later to typically date + time
.volume_label = MSC_FLASH_VOL_LABEL,
.fs_type = "FAT12 "
};
static void fat12_mkfs(void)
{
varclr_(&_disk_ram);
/*------------- Sector 0: Boot Sector -------------*/
_disk_ram.boot = _boot_sect;
_disk_ram.signature = 0xAA55;
//------------- Sector 1: FAT12 Table -------------//
// Dir entry 0 & 1 are always FF8 and FF8
fat12_dirpair_t* dirpair;
dirpair = (fat12_dirpair_t*) _disk_ram.fat;
dirpair->dir0 = dirpair->dir1 = 0xFF8;
// Dir entry 2 & 3 are FFF (end) of info and index since their size are less than 512
dirpair = (fat12_dirpair_t*) (_disk_ram.fat+3);
dirpair->dir0 = dirpair->dir1 = 0xFFF;
// Dir entry chain for uf2 file
dirpair = (fat12_dirpair_t*) (_disk_ram.fat+6);
dirpair->dir0 = 0xFFF;
dirpair->dir1 = 0x000;
//------------- Root Directory -------------//
// first entry is volume label
_disk_ram.root.dirent[0] = (fat_dirent_t)
{
.name = MSC_FLASH_VOL_LABEL,
.attr.volume_label = 1,
};
uint16_t data_cluster = 2; // logical data cluster always start from 2
for(int i=0; i<arrcount_(info); i++)
{
fat_dirent_t* p_dir = _disk_ram.root.dirent+1+i;
(*p_dir) = (fat_dirent_t)
{
.name = { 0 },
.attr = { 0 },
.reserved = 0,
.created_time_tenths_of_seconds = 0,
.created_time = 0x6D52,
.created_date = 0x4365,
.accessed_date = 0x4365,
.cluster_high = 0,
.written_time = 0x6D52,
.written_date = 0x4365,
.cluster_low = data_cluster,
.file_size = strlen(info[i].content)
};
memcpy(p_dir->name, info[i].name, 11);
data_cluster++;
}
//------------- Data Contents -------------//
// memclr_(_page_cached, sizeof(_page_cached));
//
// for(int i=0; i<arrcount_(info); i++)
// {
// memcpy(_page_cached + i*512, info[i].content, strlen(info[i].content));
// }
//
// // Erase and Write data cluster.
// fat12_write_sector(16, _page_cached, FL_PAGE_SIZE);
}
#endif

13
src/usb/msc_uf2.h
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@@ -49,16 +49,13 @@
/*------------------------------------------------------------------*/
/* FLASH Configuration
*------------------------------------------------------------------*/
#define MSC_FLASH_ADDR_START 0xAD000
#define MSC_FLASH_SIZE (256*1024)
#define MSC_UF2_FLASH_ADDR_START 0xAD000
#define MSC_UF2_FLASH_SIZE (256*1024)
#define MSC_UF2_BLOCK_SIZE 512
#define MSC_UF2_BLOCK_NUM UF2_NUM_BLOCKS
#define MSC_UF2_BLOCK_SIZE 512
#define MSC_UF2_BLOCK_NUM UF2_NUM_BLOCKS
// must be 11 bytes padded with space
#define MSC_FLASH_VOL_LABEL "NRF52BOOT "
VERIFY_STATIC( MSC_FLASH_ADDR_START+MSC_FLASH_SIZE == BOOTLOADER_REGION_START-DFU_APP_DATA_RESERVED, );
VERIFY_STATIC( MSC_UF2_FLASH_ADDR_START+MSC_UF2_FLASH_SIZE == BOOTLOADER_REGION_START-DFU_APP_DATA_RESERVED, );
/*------------------------------------------------------------------*/
/* Note ATTR_WEAK is used when CFG_TUD_MSC = 0

2
src/usb/uf2/uf2cfg.h
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@@ -3,7 +3,7 @@
#define BOARD_ID "NRF52-Bluefruit-v0"
#define INDEX_URL "https://www.adafruit.com/product/0000"
#define UF2_NUM_BLOCKS 8000
#define VOLUME_LABEL "NRF52BOOT"
#define VOLUME_LABEL "NRF52BOOT "
#define FLASH_SIZE (BOOTLOADER_REGION_START-USER_FLASH_START)
// Only allow to write application