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doc: Update release notes

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Co-authored-by: Mikael Ågren <mikael@tillitis.se>
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Michael Cardell Widerkrantz 2025-05-16 18:12:53 +02:00
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@ -28,24 +28,24 @@ For full change log [see](https://github.com/tillitis/tillitis-key1/compare/TK1-
### FPGA
- Security Monitor memory access checks are now more complete.
- Make Security Monitor memory access checks more complete.
- Add SPI main controller mainly to access the flash chip.
- Add system reset API. Device apps can reset the system and restart
the firmware. The FPGA is not reset.
- Add system reset API. Device apps can reset the FPGA and restart
the firmware.
- Increase clock frequence to 24 MHz.
- Increase UART baudrate to 500,000.
- Fix UART baudrate counter issues noticable at higher baudrates.
- Fix missing clock cycles in timer core.
- Remove the UART runtime configuration API.
- Several clean ups and testbench changes.
- Make Verilator simulation work again.
- Several minor clean ups of design and testbench.
- Add hardware clear to send (CTS) signals for communication between
UART and CH552.
@ -54,19 +54,19 @@ For full change log [see](https://github.com/tillitis/tillitis-key1/compare/TK1-
- Make ROM non-executable in app mode.
- Remove support for access to the firmware blake2s() function from
apps.
- Remove MMIO address for access to the firmware blake2s() function
from apps.
- Automatically leave firmware mode when execution leaves ROM and
remove the now unnecessary APP\_MODE\_CTRL register.
- Add extra protection of UDS: When execution leaves ROM the first
time, UDS is hardware protected from reading, as well as already
existing UDS protection after first read and UDS being unreadable in
app mode.
- Change UDS read protection: When execution leaves ROM the first
time, UDS is hardware protected from reads. The already existing
protection that UDS is protected after the first read is also still
available.
- Introduce interrupt handler for hardware-based privilege raising for
system calls.
- Introduce interrupt handler for hardware-based privilege raising and
automatically privelege lowering for system calls.
### Firmware
@ -74,27 +74,65 @@ For full change log [see](https://github.com/tillitis/tillitis-key1/compare/TK1-
by TRNG.
- Add support for the new USB Mode Protocol to communicate with
different endpoints.
different USB endpoints in the USB controller.
- Support a filesystem on flash.
- Support a filesystem on flash: There's space for two pre-loaded
apps and four storage areas for device apps.
- Add a system call mechanism and system calls: `RESET`, `ALLOC_AREA`,
`DEALLOC_AREA`, `WRITE_DATA`, `READ_DATA`, `ERASE_DATA`,
`PRELOAD_DELETE`, `PRELOAD_STORE`, `PRELOAD_STORE_FIN`,
`PRELOAD_GET_DIGSIG`, `STATUS`, and `GET_VIDPID`. See [firmware's
README](../hw/application_fpga/fw/README.md) for documentation.
A typical use is that app slot 0 will contain a loader app for
verified boot and app slot 1 contains the app to be verified.
- Automatically start an app in flash app slot 0 after power cycle and
when instructed to by reset intentions.
The automatically started app is trusted by the firmware by
including an app digest in the firmware ROM. This means we extend
the user's trust in the firmware to the first app, but only if it's
measured to the correct digest by the firmware. Anything else is a
hard error which halts the CPU.
- Support chaining of apps through soft resets, including support for
verifying that the next app is the expected one (exact measured
digest the previous app expected), and leaving data for the next app
to use.
- Add a system call mechanism and system calls. See [firmware's
README](../hw/application_fpga/fw/README.md) for documentation, but
its probably easier to use the the syscall wrappers in libsyscall in
[tkey-libs](https://github.com/tillitis/tkey-libs) if you're writing
in C.
- Harmonize with [tkey-libs](https://github.com/tillitis/tkey-libs).
Import tkey-libs to this repo for convenience.
### CH552
- Rewrite test firmware to work with the new leaving ROM-scenario.
Introduce a separate `testapp` for the app mode parts.
### Device apps
Introduce some device apps mostly for testing.
- `reset_test`: Test the different types of soft reset.
- `testapp`: Tests in app mode that used to live in `testfw`.
- `testloadapp`: A simple loader app for management and verification
of a second app.
- `defaultapp`: An app that immediately resets the TKey to load an app
from the client, just like earlier releases.
### CH552 firmware
- Use the new CTS signals for communication over the UART.
- Add support for two HID endpoints.
- Add support for two HID endpoints (security token and our debug
HID).
- Add protocol to communicate with the three different endpoints: CDC,
HID, debug.
- Add support for CCID endpoint.
- Add a protocol to communicate with the different endpoints: CDC,
CCID, FIDO, debug.
- Change USB frame sending from a software timer to instead be
controlled by the USB Controller Protocol.
@ -106,6 +144,13 @@ https://shop-nl.blinkinlabs.com/products/ch55x-reset-controller
https://github.com/Blinkinlabs/ch55x_programmer
### Tooling
- Add tools to parse and generate partition tables and flash images.
- Add tool to compute a print a BLAKE2s digest, optionally as C code.
### tkey-builder
- New versions of:
@ -131,6 +176,9 @@ https://github.com/Blinkinlabs/ch55x_programmer
- Remove Go compiler support.
- Introduce buildtools.sh for building upstream tools for inclusion
in the image.
### Docs
- All docs now in READMEs close to the design or code.