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ports/stm32: Add libmetal port.
Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
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‎ports/stm32/Makefile

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endif # MICROPY_PY_BLUETOOTH
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ifeq ($(MICROPY_PY_OPENAMP),1)
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SRC_C += metal/metal_port.c
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endif
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# SRC_O should be placed first to work around this LTO bug with binutils <2.35:
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83967
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OBJ += $(addprefix $(BUILD)/, $(SRC_O))

‎ports/stm32/metal/metal_port.c

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/*
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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) 2023 Arduino SA
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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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* libmetal stm32 port.
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*/
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#include "metal/sys.h"
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#include "metal/utilities.h"
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#include "metal/device.h"
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struct metal_state _metal;
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static mp_sched_node_t rproc_notify_node;
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int metal_sys_init(const struct metal_init_params *params) {
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metal_unused(params);
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// Clear HSEM pending IRQ.
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HSEM_COMMON->ICR |= (uint32_t)__HAL_HSEM_SEMID_TO_MASK(METAL_HSEM_ID_MASTER);
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HAL_NVIC_ClearPendingIRQ(HSEM1_IRQn);
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// Enable and configure HSEM.
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__HAL_RCC_HSEM_CLK_ENABLE();
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HAL_NVIC_SetPriority(HSEM1_IRQn, 0, 1);
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HAL_NVIC_EnableIRQ(HSEM1_IRQn);
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HAL_HSEM_ActivateNotification(__HAL_HSEM_SEMID_TO_MASK(METAL_HSEM_ID_MASTER));
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metal_bus_register(&metal_generic_bus);
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return 0;
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}
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void metal_sys_finish(void) {
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metal_bus_unregister(&metal_generic_bus);
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}
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unsigned int sys_irq_save_disable(void) {
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return disable_irq();
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}
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void sys_irq_restore_enable(unsigned int state) {
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enable_irq(state);
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}
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void sys_irq_enable(unsigned int vector) {
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metal_unused(vector);
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}
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void sys_irq_disable(unsigned int vector) {
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metal_unused(vector);
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}
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void *metal_machine_io_mem_map(void *va, metal_phys_addr_t pa,
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size_t size, unsigned int flags) {
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metal_unused(pa);
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metal_unused(size);
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metal_unused(flags);
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return va;
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}
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void metal_machine_cache_flush(void *addr, unsigned int len) {
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SCB_CleanDCache_by_Addr((uint32_t *)addr, len);
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}
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void metal_machine_cache_invalidate(void *addr, unsigned int len) {
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SCB_CleanInvalidateDCache_by_Addr((uint32_t *)addr, len);
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}
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int __metal_sleep_usec(unsigned int usec) {
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mp_hal_delay_us(usec);
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return 0;
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}
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int metal_rproc_notify(void *priv, uint32_t id) {
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HAL_HSEM_FastTake(METAL_HSEM_ID_REMOTE);
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HAL_HSEM_Release(METAL_HSEM_ID_REMOTE, 0);
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return 0;
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}
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void HSEM1_IRQHandler(void) {
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HAL_HSEM_IRQHandler();
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mp_sched_schedule_node(&rproc_notify_node, metal_rproc_notified);
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HAL_HSEM_ActivateNotification(__HAL_HSEM_SEMID_TO_MASK(METAL_HSEM_ID_MASTER));
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}

‎ports/stm32/metal/metal_port.h

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/*
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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) 2023 Arduino SA
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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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* libmetal stm32 port.
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*/
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#ifndef MICROPY_INCLUDED_STM32_METAL_PORT_H
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#define MICROPY_INCLUDED_STM32_METAL_PORT_H
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#include <stdlib.h>
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#include "py/mphal.h"
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#include "py/runtime.h"
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#define METAL_HAVE_STDATOMIC_H 0
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#define METAL_HAVE_FUTEX_H 0
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#define METAL_PROCESSOR_CPU_H "metal/processor/arm/cpu.h"
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#define METAL_PROCESSOR_ATOMIC_H "metal/processor/arm/atomic.h"
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#define METAL_MAX_DEVICE_REGIONS 2
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#define METAL_HSEM_ID_REMOTE 0
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#define METAL_HSEM_ID_MASTER 1
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// Note set to 1 to enable log output.
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#define METAL_LOG_HANDLER_ENABLE 0
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#define metal_cpu_yield()
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#define metal_sys_assert(cond) assert(cond)
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#define metal_generic_default_poll() MICROPY_EVENT_POLL_HOOK
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int metal_rproc_notify(void *priv, uint32_t id);
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extern void metal_rproc_notified(mp_sched_node_t *node);
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#endif // MICROPY_INCLUDED_STM32_METAL_PORT_H

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