5e990cc27f
The RT1176 has two cores, but the actual firmware supports only the CM7. There are currently no good plans on how to use the CM4. The actual MIMXRT1170_EVK board is on par with the existing MIMXRT boards, with the following extensions: - Use 64 MB RAM for the heap. - Support both LAN interfaces as LAN(0) and LAN(1), with LAN(1) being the 1GB interface. The dual LAN port interface can eventually be adapted as well for the RT1062 MCU. This work was done in collaboration with @alphaFred.
126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016 Damien P. George
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*
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* use of the TRNG by
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* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
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* Copyright (c) 2019 Artur Pacholec
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "py/mphal.h"
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#if defined(MIMXRT117x_SERIES)
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#include "fsl_caam.h"
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#else
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#include "fsl_trng.h"
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#endif
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static bool initialized = false;
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#if defined(MIMXRT117x_SERIES)
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STATIC caam_handle_t caam_handle;
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STATIC caam_rng_state_handle_t caam_state_handle = kCAAM_RngStateHandle0;
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#if defined(FSL_FEATURE_HAS_L1CACHE) || defined(__DCACHE_PRESENT)
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AT_NONCACHEABLE_SECTION(static caam_job_ring_interface_t s_jrif0);
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#else
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static caam_job_ring_interface_t s_jrif0;
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#endif
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STATIC void trng_start(void) {
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caam_config_t config;
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if (!initialized) {
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CAAM_GetDefaultConfig(&config);
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config.jobRingInterface[0] = &s_jrif0;
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CAAM_Init(CAAM, &config);
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initialized = true;
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}
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}
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void trng_random_data(unsigned char *output, size_t len) {
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trng_start();
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CAAM_RNG_GetRandomData(CAAM, &caam_handle, caam_state_handle, output, len,
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kCAAM_RngDataAny, NULL);
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}
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#else
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STATIC void trng_start(void) {
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trng_config_t trngConfig;
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if (!initialized) {
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TRNG_GetDefaultConfig(&trngConfig);
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trngConfig.sampleMode = kTRNG_SampleModeVonNeumann;
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TRNG_Init(TRNG, &trngConfig);
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initialized = true;
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}
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}
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void trng_random_data(unsigned char *output, size_t len) {
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trng_start();
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TRNG_GetRandomData(TRNG, output, len);
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}
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#endif
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uint32_t trng_random_u32(void) {
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uint32_t rngval;
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trng_start();
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trng_random_data((uint8_t *)&rngval, 4);
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return rngval;
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}
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#if MICROPY_PY_UOS_URANDOM
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STATIC mp_obj_t mp_uos_urandom(mp_obj_t num) {
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mp_int_t n = mp_obj_get_int(num);
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vstr_t vstr;
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vstr_init_len(&vstr, n);
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trng_start();
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trng_random_data((uint8_t *)vstr.buf, n);
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return mp_obj_new_bytes_from_vstr(&vstr);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_uos_urandom_obj, mp_uos_urandom);
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#endif
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#if MICROPY_PY_UOS_DUPTERM_NOTIFY
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STATIC mp_obj_t mp_uos_dupterm_notify(mp_obj_t obj_in) {
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(void)obj_in;
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for (;;) {
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int c = mp_uos_dupterm_rx_chr();
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if (c < 0) {
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break;
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}
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ringbuf_put(&stdin_ringbuf, c);
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}
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_uos_dupterm_notify_obj, mp_uos_dupterm_notify);
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#endif
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