Added read-only USB drive with host utils for linux
This commit is contained in:
Daniele Lacamera
parent
11b1951b2a
commit
f49e1a5eb7
5 changed files with 180 additions and 159 deletions
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@ -25,6 +25,7 @@ target_sources(${PROJECT} PUBLIC
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${CMAKE_CURRENT_SOURCE_DIR}/src/fsm.c
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${CMAKE_CURRENT_SOURCE_DIR}/src/flash.c
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${CMAKE_CURRENT_SOURCE_DIR}/src/hid.c
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${CMAKE_CURRENT_SOURCE_DIR}/src/disk0.c
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${CMAKE_CURRENT_SOURCE_DIR}/lib/wolfssl/wolfcrypt/src/wc_port.c
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${CMAKE_CURRENT_SOURCE_DIR}/lib/wolfssl/wolfcrypt/src/wolfmath.c
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${CMAKE_CURRENT_SOURCE_DIR}/lib/wolfssl/wolfcrypt/src/hash.c
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@ -164,6 +164,7 @@ To compile the firmware run the following from the source directory:
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```
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mkdir build
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cd build
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make -C ../msc_content
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cmake .. -DFAMILY=rp2040 -DPICO_SDK_PATH=/path/to/motenpoche/pico-sdk
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```
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@ -1,7 +1,26 @@
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all: mep
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all: ../src/disk0.c
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mep: mep.c
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gcc -g -ggdb -o mep mep.c -lwolfssl
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../src/disk0.c: mep FORCE
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dd if=/dev/zero of=disk0.img bs=1K count=128
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sudo mkfs.vfat disk0.img
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sudo mkdir -p tmpfs
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sudo mount -o loop disk0.img tmpfs
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sudo mkdir -p tmpfs/mep
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sudo cp mep.c mep tmpfs/mep
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sudo cp Makefile.flash tmpfs/mep/Makefile
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sudo cp ../README.md tmpfs
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sudo umount tmpfs
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xxd -i disk0.img | sed -e "s/unsigned/const unsigned/g" \
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| sed -e "s/char/char __attribute__((section(\".disk0\")))/g" > ../src/disk0.c
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clean:
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rm -f mep
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rm -f mep fatfs ../fatfs.ld
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sudo umount tmpfs || true
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sudo rm -rf tmpfs
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FORCE:
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@ -21,6 +21,7 @@
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__stack (== StackTop)
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*/
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MEMORY
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{
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FLASH(rx) : ORIGIN = 0x10000000, LENGTH = 2048k
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@ -93,6 +94,13 @@ SECTIONS
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*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.flashdata*)))
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. = ALIGN(4);
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} > FLASH
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.fatfs_rodata : {
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. = ALIGN(512);
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__fatfs_start = .;
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KEEP(*(.disk0*));
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__fatfs_end = .;
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} > FLASH
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.ARM.extab :
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{
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@ -115,7 +123,8 @@ SECTIONS
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*(.binary_info.*)
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} > FLASH
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__binary_info_end = .;
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. = ALIGN(4);
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/* End of .text-like segments */
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__etext = .;
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@ -178,6 +187,7 @@ SECTIONS
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. = ALIGN(4);
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*(.uninitialized_data*)
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} > RAM
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/* Start and end symbols must be word-aligned */
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.scratch_x : {
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@ -234,6 +244,7 @@ SECTIONS
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.flash_end : {
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__flash_binary_end = .;
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} > FLASH
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/* stack limit is poorly named, but historically is maximum heap ptr */
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__StackLimit = ORIGIN(RAM) + LENGTH(RAM);
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301
src/msc_disk.c
301
src/msc_disk.c
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@ -28,133 +28,93 @@
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#if CFG_TUD_MSC
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#define MSC_RO_ORIGIN (0x10180000)
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#define DISK_BLOCK_NUM 1024
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#define DISK_BLOCK_SIZE 512
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extern const unsigned char disk0_img[];
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struct disk_lba {
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uint8_t data[DISK_BLOCK_SIZE];
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};
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// whether host does safe-eject
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static bool ejected = false;
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// Some MCU doesn't have enough 8KB SRAM to store the whole disk
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// We will use Flash as read-only disk with board that has
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// CFG_EXAMPLE_MSC_READONLY defined
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static struct disk_lba lba_cache;
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static int lba_cached = -1;
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#define README_CONTENTS \
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"This is the password vault utilities directory.\r\n\r\nWork in progress\r\n"
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enum
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{
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DISK_BLOCK_NUM = 16, // 8KB is the smallest size that windows allow to mount
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DISK_BLOCK_SIZE = 512
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struct drive {
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const uint8_t lun;
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const char vid[8];
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const char pid[16];
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const char rev[4];
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const uint32_t n_lba;
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};
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#ifdef CFG_EXAMPLE_MSC_READONLY
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const
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#endif
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uint8_t msc_disk[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] =
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{
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//------------- Block0: Boot Sector -------------//
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// byte_per_sector = DISK_BLOCK_SIZE; fat12_sector_num_16 = DISK_BLOCK_NUM;
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// sector_per_cluster = 1; reserved_sectors = 1;
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// fat_num = 1; fat12_root_entry_num = 16;
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// sector_per_fat = 1; sector_per_track = 1; head_num = 1; hidden_sectors = 0;
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// drive_number = 0x80; media_type = 0xf8; extended_boot_signature = 0x29;
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// filesystem_type = "FAT12 "; volume_serial_number = 0x1234; volume_label = "TinyUSB MSC";
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// FAT magic code at offset 510-511
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{
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0xEB, 0x3C, 0x90, 0x4D, 0x53, 0x44, 0x4F, 0x53, 0x35, 0x2E, 0x30, 0x00, 0x02, 0x01, 0x01, 0x00,
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0x01, 0x10, 0x00, 0x10, 0x00, 0xF8, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x29, 0x34, 0x12, 0x00, 0x00, 'V' , 'a' , 'u' , 'l' , 't' ,
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' ' , 'T' , 'o' , 'o' , 'l' , 's' , 0x46, 0x41, 0x54, 0x31, 0x32, 0x20, 0x20, 0x20, 0x00, 0x00,
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#define N_DRIVES 2
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// Zero up to 2 last bytes of FAT magic code
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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static uint8_t drv_active[N_DRIVES] = {1, 0};
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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const char global_vid[8] = "DLX";
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const char host_pid[16] = "MEP Tools";
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const char vault_pid[16] = "MEP Vault";
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const char global_rev[4] = "0.1";
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xAA
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},
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//------------- Block1: FAT12 Table -------------//
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{
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0xF8, 0xFF, 0xFF, 0xFF, 0x0F // // first 2 entries must be F8FF, third entry is cluster end of readme file
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},
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//------------- Block2: Root Directory -------------//
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{
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// first entry is volume label
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'V' , 'a' , 'u' , 'l' , 't' , ' ' , 'T' , 'o' , 'o' , 'l' , 's' , 0x08, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4F, 0x6D, 0x65, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// second entry is readme file
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'R' , 'E' , 'A' , 'D' , 'M' , 'E' , ' ' , ' ' , 'T' , 'X' , 'T' , 0x20, 0x00, 0xC6, 0x52, 0x6D,
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0x65, 0x43, 0x65, 0x43, 0x00, 0x00, 0x88, 0x6D, 0x65, 0x43, 0x02, 0x00,
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sizeof(README_CONTENTS)-1, 0x00, 0x00, 0x00 // readme's files size (4 Bytes)
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},
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//------------- Block3: Readme Content -------------//
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README_CONTENTS
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static const struct drive Drives[N_DRIVES] = {
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{ 0, "DLX", "MEP Tools", "0.1", 1024},
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{ 1, "DLX", "MEP Vault", "0.1", 1024}
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};
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uint8_t tud_msc_get_maxlun_cb(void)
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{
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return 1;
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}
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// Invoked when received SCSI_CMD_INQUIRY
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// Application fill vendor id, product id and revision with string up to 8, 16, 4 characters respectively
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void tud_msc_inquiry_cb(uint8_t lun, uint8_t vendor_id[8], uint8_t product_id[16], uint8_t product_rev[4])
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{
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(void) lun;
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const char vid[] = "DLX";
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const char pid[] = "Vault tools";
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const char rev[] = "0.1a";
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memcpy(vendor_id , vid, strlen(vid));
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memcpy(product_id , pid, strlen(pid));
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memcpy(product_rev, rev, strlen(rev));
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const struct drive *drv;
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if (lun >= N_DRIVES) {
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return;
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}
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drv = &Drives[lun];
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memcpy(vendor_id , drv->vid, strlen(drv->vid));
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memcpy(product_id , drv->pid, strlen(drv->pid));
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memcpy(product_rev, drv->rev, strlen(drv->rev));
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}
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// Invoked when received Test Unit Ready command.
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// return true allowing host to read/write this LUN e.g SD card inserted
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bool tud_msc_test_unit_ready_cb(uint8_t lun)
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{
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(void) lun;
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// RAM disk is ready until ejected
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if (ejected) {
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tud_msc_set_sense(lun, SCSI_SENSE_NOT_READY, 0x3a, 0x00);
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return false;
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}
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return true;
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if (lun >= N_DRIVES) {
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tud_msc_set_sense(lun, SCSI_SENSE_NOT_READY, 0x3a, 0x00);
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return false;
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}
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if (drv_active[lun]) {
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return true;
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} else {
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tud_msc_set_sense(lun, SCSI_SENSE_NOT_READY, 0x3a, 0x00);
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return false;
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}
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}
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// Invoked when received SCSI_CMD_READ_CAPACITY_10 and SCSI_CMD_READ_FORMAT_CAPACITY to determine the disk size
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// Application update block count and block size
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void tud_msc_capacity_cb(uint8_t lun, uint32_t* block_count, uint16_t* block_size)
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{
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(void) lun;
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*block_count = DISK_BLOCK_NUM;
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*block_size = DISK_BLOCK_SIZE;
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if (lun >= N_DRIVES) {
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*block_count = DISK_BLOCK_NUM;
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*block_size = DISK_BLOCK_SIZE;
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} else {
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*block_count = Drives[lun].n_lba;
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*block_size = DISK_BLOCK_SIZE;
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}
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}
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// Invoked when received Start Stop Unit command
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@ -162,45 +122,74 @@ void tud_msc_capacity_cb(uint8_t lun, uint32_t* block_count, uint16_t* block_siz
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// - Start = 1 : active mode, if load_eject = 1 : load disk storage
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bool tud_msc_start_stop_cb(uint8_t lun, uint8_t power_condition, bool start, bool load_eject)
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{
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(void) lun;
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(void) power_condition;
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const struct drive *drv;
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(void) power_condition;
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if ( load_eject )
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{
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if (start)
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{
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// load disk storage
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}else
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{
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// unload disk storage
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ejected = true;
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if (lun < N_DRIVES) {
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drv = &Drives[lun];
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if ( load_eject )
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{
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if (start)
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{
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drv_active[lun] = 1;
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}else
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{
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drv_active[lun] = 0;
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}
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}
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}
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}
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return true;
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return true;
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}
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// Callback invoked when received READ10 command.
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// Copy disk's data to buffer (up to bufsize) and return number of copied bytes.
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int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
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{
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(void) lun;
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// out of ramdisk
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if ( lba >= DISK_BLOCK_NUM ) return -1;
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const struct drive *drv;
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uint8_t const *addr;
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if (lun >= N_DRIVES)
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return -1;
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drv = &Drives[lun];
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uint8_t const* addr = msc_disk[lba] + offset;
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memcpy(buffer, addr, bufsize);
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if ( lba >= drv->n_lba )
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return -1;
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return bufsize;
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if (lun == 0) {
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struct disk_lba *msc_ro = (struct disk_lba *)disk0_img;
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memcpy(buffer, msc_ro[lba].data + offset, bufsize);
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asm volatile("DMB");
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return bufsize;
|
||||
} else {
|
||||
#if 0
|
||||
if ( lba != lba_cached) {
|
||||
if (lba == 0) {
|
||||
memcpy(lba_cache.data, mbr.data, sizeof(struct disk_lba));
|
||||
lba_cached = lba;
|
||||
return 0;
|
||||
}
|
||||
memcpy(lba_cache.data, msc_ro[lba].data, sizeof(struct disk_lba));
|
||||
lba_cached = lba;
|
||||
return 0;
|
||||
}
|
||||
memcpy(buffer, lba_cache.data + offset, bufsize);
|
||||
#endif
|
||||
memset(buffer, 0xA5, bufsize);
|
||||
return bufsize;
|
||||
}
|
||||
}
|
||||
|
||||
bool tud_msc_is_writable_cb (uint8_t lun)
|
||||
{
|
||||
(void) lun;
|
||||
|
||||
/* Read only. */
|
||||
return false;
|
||||
if (lun != 1) {
|
||||
/* Read only. */
|
||||
return false;
|
||||
} else {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
// Callback invoked when received WRITE10 command.
|
||||
|
|
@ -221,45 +210,45 @@ int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t*
|
|||
// - READ10 and WRITE10 has their own callbacks
|
||||
int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize)
|
||||
{
|
||||
// read10 & write10 has their own callback and MUST not be handled here
|
||||
// read10 & write10 has their own callback and MUST not be handled here
|
||||
|
||||
void const* response = NULL;
|
||||
int32_t resplen = 0;
|
||||
void const* response = NULL;
|
||||
int32_t resplen = 0;
|
||||
|
||||
// most scsi handled is input
|
||||
bool in_xfer = true;
|
||||
// most scsi handled is input
|
||||
bool in_xfer = true;
|
||||
|
||||
switch (scsi_cmd[0])
|
||||
{
|
||||
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
|
||||
// Host is about to read/write etc ... better not to disconnect disk
|
||||
resplen = 0;
|
||||
break;
|
||||
|
||||
default:
|
||||
// Set Sense = Invalid Command Operation
|
||||
tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);
|
||||
|
||||
// negative means error -> tinyusb could stall and/or response with failed status
|
||||
resplen = -1;
|
||||
break;
|
||||
}
|
||||
|
||||
// return resplen must not larger than bufsize
|
||||
if ( resplen > bufsize ) resplen = bufsize;
|
||||
|
||||
if ( response && (resplen > 0) )
|
||||
{
|
||||
if(in_xfer)
|
||||
switch (scsi_cmd[0])
|
||||
{
|
||||
memcpy(buffer, response, resplen);
|
||||
}else
|
||||
{
|
||||
// SCSI output
|
||||
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
|
||||
// Host is about to read/write etc ... better not to disconnect disk
|
||||
resplen = 0;
|
||||
break;
|
||||
|
||||
default:
|
||||
// Set Sense = Invalid Command Operation
|
||||
tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);
|
||||
|
||||
// negative means error -> tinyusb could stall and/or response with failed status
|
||||
resplen = -1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return resplen;
|
||||
// return resplen must not larger than bufsize
|
||||
if ( resplen > bufsize ) resplen = bufsize;
|
||||
|
||||
if ( response && (resplen > 0) )
|
||||
{
|
||||
if(in_xfer)
|
||||
{
|
||||
memcpy(buffer, response, resplen);
|
||||
}else
|
||||
{
|
||||
// SCSI output
|
||||
}
|
||||
}
|
||||
|
||||
return resplen;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in a new issue