stm32: Implement port backend for libmetal.
Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
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@ -422,6 +422,13 @@ endif
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endif # MICROPY_PY_BLUETOOTH
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# Add stm32-specific implementation of libmetal (and optionally OpenAMP's rproc).
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# Note: libmetal code is generated via a pre-processor so ensure that runs first.
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ifeq ($(MICROPY_PY_OPENAMP),1)
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SRC_C += mpmetalport.c
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$(BUILD)/mpmetalport.o: $(BUILD)/openamp/metal/config.h
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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))
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@ -174,6 +174,8 @@ static inline void restore_irq_pri(uint32_t state) {
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#define IRQ_PRI_SPI NVIC_EncodePriority(NVIC_PRIORITYGROUP_4, 8, 0)
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#define IRQ_PRI_HSEM NVIC_EncodePriority(NVIC_PRIORITYGROUP_4, 10, 0)
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// Interrupt priority for non-special timers.
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#define IRQ_PRI_TIMX NVIC_EncodePriority(NVIC_PRIORITYGROUP_4, 13, 0)
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@ -0,0 +1,107 @@
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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 "py/mperrno.h"
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#include "py/mphal.h"
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#include "mpu.h"
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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_MASTER_ID);
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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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NVIC_SetPriority(HSEM1_IRQn, IRQ_PRI_HSEM);
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HAL_NVIC_EnableIRQ(HSEM1_IRQn);
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HAL_HSEM_ActivateNotification(__HAL_HSEM_SEMID_TO_MASK(METAL_HSEM_MASTER_ID));
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#ifndef VIRTIO_USE_DCACHE
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// If cache management is not enabled, configure the MPU to disable caching
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// for the entire shared memory region.
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uint32_t irq_state = mpu_config_start();
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mpu_config_region(MPU_REGION_OPENAMP, METAL_MPU_REGION_BASE, MPU_CONFIG_SHARED_UNCACHED(METAL_MPU_REGION_SIZE));
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mpu_config_end(irq_state);
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#endif
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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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HAL_NVIC_DisableIRQ(HSEM1_IRQn);
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HAL_HSEM_DeactivateNotification(__HAL_HSEM_SEMID_TO_MASK(METAL_HSEM_MASTER_ID));
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__HAL_RCC_HSEM_CLK_DISABLE();
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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 *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(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_InvalidateDCache_by_Addr(addr, len);
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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_REMOTE_ID);
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HAL_HSEM_Release(METAL_HSEM_REMOTE_ID, 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, openamp_remoteproc_notified);
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HAL_HSEM_ActivateNotification(__HAL_HSEM_SEMID_TO_MASK(METAL_HSEM_MASTER_ID));
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}
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@ -0,0 +1,76 @@
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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_MPMETALPORT_H
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#define MICROPY_INCLUDED_STM32_MPMETALPORT_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_MAX_DEVICE_REGIONS 2
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#define METAL_HSEM_REMOTE_ID 0
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#define METAL_HSEM_MASTER_ID 1
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// 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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// Shared memory config
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#define METAL_SHM_NAME "OPENAMP_SHM"
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// Note 1K must be reserved at the start of the openamp
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// shared memory region, for the shared resource table.
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#define METAL_RSC_ADDR ((void *)_openamp_shm_region_start)
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#define METAL_RSC_SIZE (1024)
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#define METAL_SHM_ADDR ((metal_phys_addr_t)(_openamp_shm_region_start + METAL_RSC_SIZE))
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#define METAL_SHM_SIZE ((size_t)(_openamp_shm_region_end - _openamp_shm_region_start - METAL_RSC_SIZE))
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#define METAL_MPU_REGION_BASE ((uint32_t)_openamp_shm_region_start)
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#define METAL_MPU_REGION_SIZE (MPU_REGION_SIZE_64KB)
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extern const char _openamp_shm_region_start[];
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extern const char _openamp_shm_region_end[];
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int metal_rproc_notify(void *priv, uint32_t id);
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extern void openamp_remoteproc_notified(mp_sched_node_t *node);
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static inline 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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static inline void metal_generic_default_poll(void) {
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MICROPY_EVENT_POLL_HOOK
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}
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#endif // MICROPY_INCLUDED_STM32_METAL_PORT_H
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