mirror of
https://github.com/tinygo-org/tinygo.git
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Ron Evans
17302ca762
* 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>
60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
//go:build tkey
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package machine
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/*
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#define TK1_MMIO_TK1_BLAKE2S 0xff000040
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typedef unsigned char uint8_t;
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typedef unsigned long uint32_t;
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typedef unsigned long size_t;
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// blake2s state context
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typedef struct {
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uint8_t b[64]; // input buffer
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uint32_t h[8]; // chained state
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uint32_t t[2]; // total number of bytes
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size_t c; // pointer for b[]
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size_t outlen; // digest size
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} blake2s_ctx;
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typedef int (*fw_blake2s_p)(void *out, unsigned long outlen, const void *key,
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unsigned long keylen, const void *in,
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unsigned long inlen, blake2s_ctx *ctx);
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int blake2s(void *out, unsigned long outlen, const void *key, unsigned long keylen, const void *in, unsigned long inlen)
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{
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fw_blake2s_p const fw_blake2s =
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(fw_blake2s_p) * (volatile uint32_t *)TK1_MMIO_TK1_BLAKE2S;
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blake2s_ctx ctx;
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return fw_blake2s(out, outlen, key, keylen, in, inlen, &ctx);
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}
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*/
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import "C"
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import (
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"errors"
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"unsafe"
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)
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var (
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ErrBLAKE2sInvalid = errors.New("invalid params for call to BLAKE2s")
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ErrBLAKE2sFailed = errors.New("call to BLAKE2s failed")
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)
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func BLAKE2s(output []byte, key []byte, input []byte) error {
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if len(output) == 0 || len(input) == 0 {
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return ErrBLAKE2sInvalid
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}
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op := unsafe.Pointer(&output[0])
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kp := unsafe.Pointer(&key[0])
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ip := unsafe.Pointer(&input[0])
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if res := C.blake2s(op, C.size_t(len(output)), kp, C.size_t(len(key)), ip, C.size_t(len(input))); res != 0 {
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return ErrBLAKE2sFailed
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}
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return nil
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}
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