This is the second major release of Tock! Tock 2.0 comes with a revamped system call interface with clarified semantics for how resources are shared between processes and the kernel. This is a breaking change from Tock 1.x and Tock 2.0 requires apps compiled for the new syscall interface.

System Call Interface Changes

Two new system calls: AllowReadOnly and Exit. Allow has been renamed to AllowReadWrite.
System calls can now return up to 4 registers of values to userspace. This flexibility introduces some additional restraints on capsule code, see https://github.com/tock/tock/blob/master/doc/Porting_v1_Capsules_to_v2.md for more details.
Additional restrictions on how capsules implement Subscribe and Allow, with some in-kernel checks of these restrictions.

New Requirements in Tock 2.0

All apps must include a TBF header specifying the minimum supported kernel version they require. By default, the process loader will check this header and refuse to load apps which are not explicitly compatible with 2.0.
All capsules must store any process state in a Grant, and each capsule may only have up to one grant.

Other Major Changes

The Chip and Platform traits in the kernel have been refactored. Chip now only includes functions that are tightly coupled with microcontrollers. Platform has been divided into separate, clearly defined traits.
How boards configure the kernel has been clarified. All resources the kernel needs to operate for a specific board are specified in the KernelResources trait. This replaces the previous ad-hoc approach where some configuration was passed in as function arguments and others where in a trait. Additionally, individual boards can now choose to exclude chip peripherals which they do not use.
The kernel crate has been reorganized. Kernel exports are more clearly structured, and use full module paths by default. Inside the kernel crate, related files are namespaced as feature_X.rs, such as process_standard.rs and process_utilities.rs.
The process console now is able to print memory maps.

New Platforms

Nano RP2040 Connect
Clue nRF52840
BBC Micro:bit v2
WeAct F401CCU6 Core Board
i.MX RT 1052 Evaluation Kit
Teensy 4.0
Pico Explorer Base
Rapsberry Pi Pico
LiteX on Digilent Arty A-7
Verilated LiteX simulation
ESP32-C3-DevKitM-1

New HILs

key/value store
8080 bus (for LCDs)
text screen
screen
touch

All Merged PRs

All merged pull requests

#2799: doc: misc updates
#2798: doc: wg: core: maintenance update
#2778: [clue_nrf52840] Integrate tock bootloader
#2793: capsules: pconsole: fix kernel print
#2789: [cortex-m0+] Enable unprivileged mode and fix fault handler
#2744: Changelog for 2.0 release.
#2769: docs: syscalls: Update stability guarantees for 2.0
#2753: readme: update with 2.0 news!
#2794: capsules: update touch driver
#2792: process console: update doc comment with recent changes
#2714: make: add aliases for root makefile commands
#2752: kernel: load_processes: do not skip indices for padding apps
#2768: add core notes 2021-08-13
#2784: [stm32] Update stm32 boards
#2783: ESP32-C3: Add support for running apps
#2786: [imxrt1050-evkb] Fix GPIO interrupts
#2787: [spi] Update virtual_spi to report errors
#2791: Update touch panel and ft6x06 drivers
#2790: [nano_rp2040] Update makefile
#2725: First step on SPI documentation
#2779: Adjust app's watermark only for memory buffers
#2765: OpenTitan: Flash fixes
#2742: [arm] Cortex M0+ region
#2781: capsules/alarm: remove command 4 "set absolute expiration"
#2780: [imxrt1050-evkb] Fix number of processes supported and add process console
#2774: Update bus to prevent adding the SPI to the MUX twice
#2777: [nano33ble] Enabled ADC
#2776: Update Clue nRF52840
#2767: nrf: pwm: handle 0 hz case
#2766: Quick fix elf2uf2 installation steps
#2761: boards/litex: bump targeted tock-litex release
#2762: Minor updates to SD card docs and error codes
#2758: boards/redboard_artemis_nano: Fixup issues with release tests
#2738: Update Microbit v2 README
#2764: boards/nrf52840: fix button driver number in Grant allocation
#2719: [rp2040] Use clocks frequency to set UART baud rate
#2729: Core working group notes of 2021-07-30
#2712: make: update stack-analysis format
#2749: A few OpenTitan fixes for 2.0
#2745: Fix the multi_alarm_test to provide output, refactor it
#2750: boards/esp32c3: Fixup tests
#2751: [rp2040] Fixed gpio pin numbers in interrupt handler
#2748: fix broken error handling in allow for udp
#2746: fix log test
#2743: fix MLFQ component after kernel reorg
#2737: Core wg call notes, August 6th
#2740: Rename allow's argument from slice to buffer
#2739: kernel: syscall driver: fix sample code path
#2735: Display driver number in hex for allocation warning
#2736: Fix LED Matrix message typo
#2731: cdc: delay before sending data
#2722: Process console: only print one process if two have the same name
#2732: capsules: hts221: fix i2c read command
#2720: Process console: iterate each process on command list
#2718: pconsole: separate hello message from start()
#2733: kernel: sched: priority: get correct proc index
#2723: arch: cortex-m: defend against large stack pointer
#2715: Move boards that have large main stack frames to get_peripherals
#2692: trd/104-syscalls: clarify guarantees w.r.t. returned Allow buffers
#2566: Make SPI return buffers upon error
#2687: Create core-notes-2021-07-23
#2701: Separate schedule_upcall number and values through Rust types
#2716: readme: update chip support table
#2669: [rfc] Comptibility header (v1)
#2713: make: remove rustup nonsense with make V=1
#2705: boards/litex: bump targeted tock-litex release
#2710: doc: add capsules to capsule readme
#2708: doc: various link and spelling fixes
#2681: Add Arduino Nano RP2040 Connect
#2695: virtual_alarm: handle large dt values more resiliently
#2706: capsules: hmac: A few small fixes
#2644: OpenTitan: Bump the FPGA bitstream
#2665: kernel/hil/time: allow time to be a dyn trait object
#2688: Add new time trd with ConvertTicks trait
#2703: Flash components
#2675: Added troubleshooting for microbit v2 if openOCD could not find MEM-AP
#2698: Updated lps25hb to handle i2c errors
#2177: TBF Header Persisent Access Control
#2694: Update hts221 to handle i2c errors
#2682: I2c return buffer for fxos8700cq
#2683: Update isl29035 to handle i2c errors
#2704: readme: spelling
#2581: Add I2C error verifications for lsm303
#2702: fixed led matrix toggle bug
#2686: capsules: sha: Support a shorter destination buffer
#2689: msp432/adc: document safety invariants on &[u8] to &[u16] conversion
#2699: Fix make indentation for ST boards READMEs
#2659: Reorganize kernel/ Crate
#2696: Update the Pico Explorer Base
#2578: Initial support for the ESP32-C3 early dev board
#2680: Add Pico Explorer Base development board
#2691: Core working group notes of 2021-07-16
#2674: Notes from Tock Core WG meeting July 9th
#2685: hil/gpio: add Copy and Clone to enums
#2679: [st77xx] make reset pin as optional
#2677: Makefile: Add setup support for dnf systems
#2678: Add SPI to RP2040
#2673: Update imxrt to use new kernel exports
#2664: Add core WG notes from 2021-07-02
#2672: Update nucleo
#2671: Update stm32f412gdiscovery
#2667: Update stm32f3 discovery
#2668: Update raspberry pi pico
#2666: Update microbit_v2
#2653: Update text_screen driver to avoid re-enter to grant
#2638: Rename Driver trait parameters for consistency
#2656: kernel: schedule upcall, bool -> Result
#2632: Support aliasing of process-allowed memory
#2614: OpenTitan: Add SHA support
#2663: Auto implement Group Traits
#2655: kernel: hil: aes: Allow returning an error when setting mode
#2662: Update CRC system call driver
#2661: TRD104 changing "identifier" to "number"
#2660: doc: trd104 minor edits
#2639: Tock 2.0: implement Upcall swapping restrictions (v4)
#2636: Redesign CRC HIL & fix SAM4L implementation
#2658: Minor updates to grant.rs
#2657: Update screen to avoid grant re-enter
#2647: Add a Makefile rule to run cargo-bloat
#2648: Move kernel code out of monomorphized functions
#2446: Tock 2.0 Alpha1
#2506: kernel: Reorganize process.rs
#2643: Add working group notes for 6/25/2021
#2634: OpenTitan: Run tests
#2652: raspberry_pi_pico: delete semihosting comment
#2182: Stm32f412g: Add rng support
#2651: kernel: grant: rename GrantMemory to GrantData
#2645: rp2040: SysInfo peripheral
#2650: doc: trd104: spell check
#2646: Tock registers v0.7
#2629: OpenTitan: AES: Update the AES implementation
#2642: Tock reg UIntLike
#2601: Change qemu-path to relative path.
#2618: tock-register-interface: reorganize & document
#2623: imxrt10xx: Add DMA peripheral, integrate DMA into LPUART
#2640: fixed broken hyperlinks to the "getting started" page
#2442: board: Raspberry Pi Pico Tock port
#2627: Core working group notes of 2021-06-11
#2599: Add integration test support in the kernel, create tests for OpenTitan
#2626: boards/nordic/nrf52840dk: Connect the userspace SPI capsule
#2619: Add I2C slave support for nRF
#2595: OpenTitan: Initial support for OTBN
#2621: Add core WG notes for 2021-06-04.
#2617: Update TRD104 to more clearly state the expectations for allowed buffers.
#2624: Fixes three printing bugs in print_tock_memory_usage.py
#2622: [led_matrix] LEDs array macro
#2511: Define StatusCode which uses ErrorCode's numeric encoding
#2612: Update the nRF I2C
#2616: Fix a bug in the SPI controller capsule.
#2580: Add I2C error verifications for Bus and St77xx
#2585: boards/Makefile: remove relative libtock-c path assumptions
#2611: Add I2C error verifications for touch
#2607: Add I2C error verifications for apds9960
#2608: shell.nix: add cxxfilt Python package
#2620: Rename Platform structure to MicroBit
#2587: New ProcessConsole features
#2598: doc: trd-hil: add tips from tock-book
#2606: build with codegen-units = 1 to reduce code size
#2609: opentitan: README: Update the QEMU requirement
#2586: OpenTitan: Update the HMAC Implementation
#2613: fix Yaffs1 link in tickv README
#2582: document compiler fence before switching to userspace
#2605: allow size printing tool to be used on non-arm architectures
#2596: boards: make: check for rustup
#2604: Add core WG notes for 2021-05-28
#2592: Add core WG notes for 2021-05-21.
#2602: Fix: Replaced the cfg file with the rev B version.
#2600: Fix make allaudit
#2589: Bump rust nightly version to 2021-05-27 to fix tock-registers
#2597: opentitan: Bump the OpenTitan bitstream
#2538: Make I2C trait return buffers upon request error
#2588: add core notes 2021-05-07
#2584: add notes for core wg meeting 2021-05-14
#2583: doc/TockBinaryFormat.md: Add the missing TbfHeaderV2Permissions length
#2509: opentitan: Bump the OpenTitan bitstream SHA and enable ePMP
#2172: TBF Header Permissions
#2517: tock-registers: use traits for accessing / manipulating registers
#2576: litex/uart: fix TX race condition of unexpected txfull interrupt
#2577: Nonvirtualized userspace driver Grant migration fixes
#2572: capsules/l3gd20: migrating non-virtualized driver to Grants
#2565: April 30th, Core WG Call Notes
#2574: capsules/lsm303agr: migrating non-virtualized driver to Grants
#2575: capsules/ltc294x-grant: migrating non-virtualized driver to Grants
#2571: chips: e310x: check for pending mtimer interrupt
#2567: Led HIL for LedMarix
#2552: Core working group notes of 2021-04-23
#2562: capsules/gpio_async: enforce grant/single-process
#2558: capsules/spi_controller: migrate non-virtualized driver to Grants
#2547: capsules/i2c_master_slave_driver: use grant, enforce single process
#2559: capsules/spi_peripheral: migrate non-virtualized driver to Grants
#2560: capsules/sdcard: migrate non-virtualized userspace driver to Grants
#2549: Notes for April 16 core call
#2554: capsules/pca9544a: use grant, enforce single process …
#2555: capsules/mlx90614: use grant, enforce single process
#2556: capsules/lps25hb: use grant, enforce single process
#2557: capsules/tsl2561: use grant, enforce single process
#2553: capsules/max17205: use grant, enforce single process
#2550: Update error code text in HIL TRD.
#2542: Change the Nano33BLE to the StopWithDebug fault response
#2520: tools/board-runner: Improve documentation and OpenTitan support
#2543: Update micro:bit readme
#2546: Implement driver for HTS221 temperature sensor
#2528: Add a "panic" command to process console
#2518: Lsm303dlhc: Enforce use by a single process, move callback to Grant
#2544: doc: Fix broken link
#2537: kernel: Change ProcessFaultPolicy to a trait, add StopWithDebug policy
#2507: Rename AppId to ProcessId (v2)
#2541: Fix NRF52 802.15.4 radio bug on CCA busy + add UDP/802154 driver to Nano 33
#2535: Proximity capsule: don't double enter grant
#2431: Polishing pass on Tock 2.0 system call TRD.
#2510: Rewrite the interface between process.rs and grant.rs
#2524: Finalizing TRD 101.
#2529: Rewrite of GPIO TRD to follow the new traits.
#2523: TRD for HIL design
#2534: kernel: introduce debug::panic_print for boards without LEDs
#2521: capsules: Convert analog comparator to use grant
#2503: boards: reduce stack frame size of main()
#2532: Add Leon Schuermann to the core developers list.
#2533: tock-cells/OptionalCell: rename get-method to extract
#2525: doc: add core notes 2021-04-09
#2531: tock-cells/OptionalCell: add get-method for retrieving inner Option
#2530: Update print_tock_memory_usage.py to properly parse Rust symbols.
#2526: kernel: sched: check for process.ready()
#2508: Replace ReturnCode with Result<(), ErrorCode>
#2522: Update stack-analysis script: reset_handler is now main()
#2515: doc: add core notes 2021-04-02
#2519: RISC-V: Update the timer implementations to use the arch mtimer
#2505: Create core-notes-2021-03-26
#2513: Add i.MX RT clock configuration
#2486: sifive: Move the machine timer from rv32i
#2512: rv32i: use atomic CSR instructions for rv32i::support::atomic
#2514: wg/core/notes: fix file extension of 2021-03-26 notes
#2504: add core notes 2021-03-19
#2040: chips: plic: Disable only specific interrupts in the top half
#2204: lowrisc: flash_ctrl: Convert erase_page to be async
#2273: kernel: hil: Add a KV Store HIL
#2392: TicKV: Update the TicKV implementation
#2424: kernel: sched: Allow Platform to handle app faults
#2423: RISC-V: Add support for ePMP
#2499: SweRVolf: Add support for the platform timers
#2502: arch: Update arm cortex-m0, add cortex-m0p
#2497: kernel: process: Remove unsafe by switching flash function from add to wrapping_add
#2494: kernel: remove memory slice from Process struct
#2376: MicroBit v2 bootloader
#2489: litex/{sim, arty}: bump tock-litex release (updating LiteX packages)
#2498: Update Tock Readme with Note about 2.0.
#2501: tools: sdv2regs allow registers with no fields and fix imports
#2461: Implement RT0 in assembly
#2493: [tools] Update svd2regs to work without description
#2492: Update Rust Nightly to 2021-03-19
#2500: Fix ADC 2.0 Bug
#2477: Remove variables which are never read
#2495: Remove @niklasad1 from Core Working Group
#2481: Initial support for SweRV EH1 and SweRVolf
#2488: add Makefile rules for analyzing stack frames
#2452: arch: use target-feature for thumbv7em
#2439: Tock 2.0: Remove userspace IEEE 802.15.4 driver from Imix platform
#2454: Transitions Callback to Upcall for 2.0. In a seprate PR for review sanity.
#2491: Corrected hifive1 README.md
#2487: allow: move allow system calls handling to sched.rs
#2483: Core working group notes from 2021-02-26
#2482: Core WG notes from March 12, 2021
#2484: shell.nix: fix missing lib import
#2422: OpenTitan: Enable PMP for kernel regions
#2472: riscv: Convert CSRs to use const generics
#2475: doc: add core notes 2021-03-05
#2469: shell.nix: remove deprecated stdenv.lib
#2478: Cortex-m: document that userspace stack pointer will always be aligned on entry to the kernel
#2479: Remove ExitCall type, don't specify representation of YieldCall type
#2476: Tock 2.0: from_command_result -> from_command_return
#2450: arch: cortex-m0: switch to asm!()
#2458: RFC: kernel: change unsafe handling
#2474: Tock 2.0: Remove mut_ptr method from ReadWrite trait
#2464: Tock 2.0 - AppSlice: fix unsoundness with arbitrary pointers in slices
#2465: Tock 2.0 - ReadWriteAppSlice: require mutable borrow for ReadWrite::mut_map_or
#2232: Makefile: Don't require root permissions to install npm modules
#2420: RISC-V: Add support for detecting locked PMP regions, no need to sort
#2437: kernel: process: Add debug information on panic for grants
#2449: arch: cortex-m: update to asm!
#2440: RFC: Add install make target for boards
#2468: Pr 2446 comment cleanup
#2466: arch: cortex-m: clarify panic
#2463: Bump tockloader to version 1.6.0
#2460: CI: format on ubuntu, separate clippy
#2459: make: rustup now prints to stderr
#2455: 2.0 courses update
#2456: Filtering fix 2.0
#2447: Core WG notes for Feburary 19th
#2435: arch: cortex: fix MPU rounding calculation
#2428: Create core-notes-2021-02-12.md
#2448: Better method parsing for accounting for code size.
#2430: 2.0: Remove SuccessWithValue
#2444: Tock 2.0: Remove LegacyDriver
#2443: 2.0: lps25hb
#2441: Change process setup to minimize the initially-accessible amount of memory.
#2433: use const generics to remove duplicate code for cortex-m MPU
#2434: Tock 2.0 IPC
#2407: Tock 2.0: port #2383 (kernel: Remove setting/tracking the stack pointer in process.rs)
#2137: Simplify grant implementation and fix soundness errors
#2393: Port NRF Serialization to 2.0
#2405: Tock 2.0: clarify subscribe behavior w.r.t. invalid/refused callback
#2323: Make out-of-tree builds easier
#2419: add core notes from january 15 2021
#2421: Add core WG notes for 2021-02-05.
#2427: boards: doc: update readme
#2416: boards: nano33ble: update instructions to overwrite second bootloader
#2400: Double stack buffer for i.MX RT-based boards, prune panic! allocations
#2414: Remove tab characters & protect against accidentally introducing them
#2411: Port BLE advertising to new 2.0 driver interface
#2418: 2.0: kernel: change filter_syscall to ErrorCode
#2417: Updates SDCard capsule to Tock 2.0 system call API
#2387: Transition I2CMaster system call driver to 2.0 syscall API
#2412: ErrorCode: adjust ErrorCode discriminators to match system call TRD
#2410: Port the PCA9544a system call driver to 2.0
#2409: Port MAX17205 system call capsule to 2.0
#2408: OpenTitan: Connect TicKV
#2401: Working group notes for 01-29-2021
#2363: rv32i: transition llvm_asm! to asm!
#2390: MSP432 I2C driver
#2406: Tock 2.0: fix system call return variant discriminators
#2403: Tock 2.0 TRD: Allow new error codes to be added in the future.
#2402: Tock 2.0 syscall TRD: Allow us to add new return variants in the future.
#2255: boards: BBC Micro:bit v2 (nRF52833)
#2404: boards: Update Micro:bit v2 readme
#2383: kernel: Remove setting/tracking the stack pointer in process.rs
#2399: doc: Add note on Take/Optional Cell differences
#2398: Clarify that the driver ID and syscall ID are 32-bit values.
#2378: Add Exit system call class to Tock 2.0.
#2397: HiFive1b: Fix QEMU app load address in README.md
#2395: trd: syscalls, 8-bit byte vs word
#2388: capsules: mlx90614: Update to the Tock 2.0 Driver
#2384: Update I2C master/slave driver to 2.0 syscall API.
#2389: Add ROSEdu and Wyliodrin to list of authors
#2354: kernel: syscall: use from fn
#2377: Create core-notes-2021-01-22.md
#2380: sam4l: i2c: set clocks
#2385: MicroBit v2: process console
#2382: tsl12561: Update to use Tock 2.0 Driver
#2379: microbit_v2: fix kernel stack overflow
#2351: Yield 2.0
#2373: usb: Update to use Tock2.0 Driver
#2375: GPIO for Tock 2.0.
#2367: ctap: Update to use Tock2.0 Driver
#2368: hmac: Update to use Tock2.0 Driver
#2361: Add core notes of 2021-01-08
#2374: Add University of Stuttgart to list of authors
#2358: kernel: move tbf code to its own library
#2339: Apollo3 llvm_asm -> asm
#2371: Migrate the LowLevelDebug capsule to the Tock 2.0 syscall API.
#2372: Deleted unused driver code ft6x06 and st77xx drivers
#2364: Tock 2.0: update sound pressure driver
#2335: Tock 2.0: update text_screen driver to 2.0 API
#2357: Backport 802.15.4 deferred call update from 2.0
#2356: Backport SPI component updates from 2.0 branch
#2362: Tock 2.0: port nonvolatile storage & app flash driver
#2297: rng: port to Tock 2.0 system call interface
#2322: Tock 2.0 / rv32i: fix system call return value encoding
#2308: rv32i: fix race condition of interrupt in switch_to_process
#2290: litex: update LiteX revision, use "Secure"/"TockSecureIMC" cpu variant and integrate PMP
#2203: Port to LiteX+VexRiscv-based SoCs
#2287: Fix serial console line breaks in process fault message
#2239: net/ipv6: remove stale module, remove redundant module hierarchy
#2359: cortex-m: fix hardfault in systick_handler due to naked_fn noreturn
#2341: Use const generics for nrf gpio pins
#2353: arch: rv32i: rename stored state
#2156: TicKV: Implement a persistent key/value storage
#2333: capsules: ltc294x: update to 2.0 syscall
#2343: Use Tock Bootloader on Nano 33 BLE Board
#2350: fix cortex-m hard fault handler bug
#2317: ARM Cortex-m hardfault handler: remove UB and fix warnings on newer nightlies
#2349: remove const_panic feature
#2346: Remove associated_type_defaults feature
#2325: Add support for WeAct board based on the stm32f401ccu6 chip
#2342: use const generics to tie number of IPC regions to number of processes on board
#2229: kernel: Fix potential unsoundness in dynamic grant allocation
#2336: Make: Use -nmagic linker flag
#2289: OpenTitan: Bump the bitstream SHA to use the new addresses
#2338: github actions: auto label PRs based on files they change
#2328: Core notes from 2020-12-18
#2324: LED: remove need for &mut self
#2288: hil: Sound Pressure
#1875: netlify: try cacheing the build if we can
#2294: doc: wg: core: add notes
#2340: const generics instead of macro for pmp configuration
#2334: update rust january 7 2021
#2329: Port i2c_master to Tock 2.0 Driver trait
#2331: Port buttons driver to Tock 2.0 Driver trait
#2319: riscv: more llvm_asm --> asm
#2303: llvm_asm -> asm: arty-e21
#2299: Add CSR support for 64 Bit RISC-V
#2327: fix bug in _start_trap() assembly
#2330: Add riscv32i-unknown-none-elf arch to Nix shell
#2318: cortex-m naked functions: llvm_asm --> asm
#2309: chips/lowrisc: Ensure we don't write over the flash region
#2079: Added TextScreen HIL and driver and integrated HD44780 capsule
#2311: Board based instantiation of chip drivers and interrupt mappings: imxrt10xx
#2306: chips: stm: llvm_asm -> asm
#2301: rv32i: debug print use CSR interface
#2296: Misc documentation fixes
#2302: doc: add missing crate readmes
#2300: library: registers: support usize
#2278: usb: cdc: add 1200 baud reset interface
#2275: nrf52: usb: read size after EPDATA
#2262: nrf52: nvmc: remove global static
#2316: Update SPI peripheral syscalls to 2.0 API
#2313: Tock 2.0: screen write update
#2315: Tock 2.0: update multi touch
#2312: Tock 2.0: update ADC driver to 2.0 API
#2307: Updating Alarm syscall driver to 2.0 syscall API
#2295: Tock 2.0: lsm303 and led matrix update to tock 2.0 api
#2292: Tock 2.0: buzzer driver update
#2304: Remove unused features
#2293: Tock 2.0: update l3gd20 capsule to 2.0 API
#2284: Proximity driver to Tock 2.0 system-call interface
#2274: Update IEEE-802.15.4 driver to Tock 2.0
#2277: chips: nrf52: add gpregret setter/getter
#2258: Update touch and ft60x6 drivers to Tock 2.0
#2285: Port DAC driver to 2.0 system call interface
#2286: Update CRC capsule to use 2.0 API.
#2276: Update Gpio-async driver to 2.0
#2281: Ambient light 2.0
#2279: Tock 2.0 memop
#2266: Update UDP driver to Tock 2.0 system calls
#2283: arch: remove unused llvm-asm feature
#2244: Adafruit Clue SHT3x temperature and humidity sensor and I2C fix
#2243: Add core notes of 2020-12-04
#2174: Add core notes of 2020-10-23
#2213: kernel,arch,components: accept trailing commas in macro_rules
#2197: tock-registers: accept trailing comma in bitfields and bitmasks
#2267: VirtualSchedulerTimer: fix incorrect set_alarm invocation
#2194: capsules/led: migrate from hil::gpio::Pin to hil::led::Led
#2212: Unbreak CI by updating the package repositories
#2268: boards overview: update HiFive1 to Rev B
#2261: capsules: usb: cdc: implement receive_abort
#2263: boards: nrf52840dk: fix build.rs
#2272: nrf52: i2c: address shift update
#2265: Adafruit Clue Buzzer initialization
#2271: Update ninedof capsule to Tock 2.0 syscalls API
#2269: Tock 2.0 analog comparator: use ErrorCode::From
#2253: Spi controller 2.0
#2257: Update screen driver syscalls to Tock 2.0
#2245: Update analog comparator to tock 2.0 syscalls
#2264: Tock 2.0: don't constrain map_or return values
#2202: Virtual RNG
#2251: Updating temperature driver to 2.0.
#2252: Tock 2.0: Deprecate SuccessWithValue
#2250: Add information about erasing apps
#2242: reorder make prepush commands to avoid clippy bug
#2220: tock-registers: remove duplicate code, make local register copy read-write
#2225: arch/cortex-m: change more llvm_asm! to asm!
#2241: MSP432: Misc platform fixes
#2236: nano33ble: increase .rom section, add process console
#2238: Fix grammar
#2200: Add Teensy 4 board
#2234: nano 33 ble & adafruit clue increase the number of deferred calls slots
#2227: Fix ST77XX screen rotation offset
#2230: Parameterize debug_writer
#2224: Port log tests from imix to nano33ble
#2228: Adafruit CLUE enabled BLE and 15.4
#2196: Virtual AES Driver
#2221: usb-cdc: fake successful uart transmissions so that blocking debug calls resume
#2215: remove all uses of unstable const_in_array_repeat_expressions feature
#2216: add 15.4 and ble to nano33ble
#2226: opentitan: Bump the bitstream commit
#2208: Adafruit CLUE nrf52840
#2189: Board based instantiation of chip drivers and interrupt mappings: Msp432
#2198: build: handle missing tty gracefully
#2223: Stack size update for STM32F4 boards
#2207: Apollo3: A few more I2C fixes
#2188: Board based instantiation of chip drivers and interrupt mappings: Stm32f4
#2218: Allow processes to read from buffers shared with read-only allow
#2210: Add missing IntLike implementation
#2217: bring back borrow_interior_mutable_const clippy lint
#2209: Core WG call notes November, 20th
#2211: doc: fix broken link.
#2206: boards: Rename opentitan to earlgrey-nexysvideo
#2193: Clarify the semantics of erase_page
#2199: tools/qemu: Bump to the latest QEMU
#2191: tock-registers: release v0.6
#2192: Apollo3: Some I2C fixes and improvements
#2187: Board based instantiation of chip drivers and interrupt mappings: Stm32f3
#1918: Add Cortex-M7 Architecture and i.MX RT 1052 EVKB Board
#2176: No more globals E310 / HiFive
#2153: Board based instantiation of chip drivers and interrupt mappings: Arty_e21
#2122: Board based instantiation of chip drivers and interrupt mappings: Earlgrey/Opentitan
#2084: Board-based instantiation of chip drivers and interrupt mappings for nordic boards/chips
#2175: rust: update to 2020-10-25
#2108: MSP432: ADC support
#2069: Board-based instantiation of chip drivers and interrupt --> driver mapping for Apollo3 + SAM4L
#2183: Core WG notes for October 30
#2186: Removing bad comment in Alarm syscall driver as per Leon's suggestion.
#2094: USB: CTAP: Initial support for the FIDO CTAP HID Spec
#2140: OpenTitan: Initial support for the Flash Controller
#2178: Synchronous panic output over USB for nano33ble
#2179: build capsules/examples in CI
#2142: generic components for UDP, UDP for nrf52840dk
#2042: Intel 8080 parallel interface HIL, Bus library with I2C, SPI and Intel 8080 parallel interface implementation
#2171: add core notes october 16 2020
#2173: riscv: pmp: disallow access above app brk

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Tock 2.0