Commit Graph

3 Commits

Author SHA1 Message Date
Ayke van Laethem cab3834bc9 riscv-qemu: add VirtIO RNG device
This implements machine.GetRNG() using VirtIO. This gets the tests to
pass for crypto/md5 and crypto/sha1 that use crypto/rand in their tests.
2025-03-11 04:22:16 -07:00
Ron Evans 17302ca762 targets: add implementation for Tillitis TKey device (#4631)
* initial implementation for Tillitis TKey device
* add UART implementation for TKey
* add Pin interface implementation for TKey touch sensor
* add RNG interface implementation for TKey
* add helpful machine package functions to return identifiers such as name and version for TKey
* use built-in timer for sleep timing on TKey
* modify UART implementation for TKey to implement Serialer interface
* implement BLAKE2s ROM function call for TKey device
* handle abort by triggering TKey device fault using illegal instruction to halt CPU
* simplify TKey implementation by inheriting from existing riscv32 target
* return error for trying to configure invalid baudrates on UART
* add tkey to builder test
* be very specific for features passed to LLVM for specific config in use for TKey
* handle feedback items from TKey device code review

Signed-off-by: deadprogram <ron@hybridgroup.com>
2024-12-14 14:26:03 +01:00
Ayke van Laethem e9003e2deb runtime: add runtime.rand function
This function is needed for Go 1.22, and is used from various packages
like math/rand.

When there is no random number generator available, it falls back to a
static sequence of numbers. I think this is fine, because as far as I
can see it is only used for non-cryptographic needs.
2024-01-19 13:46:27 +01:00