ports/stm32: Add libmetal port.

iabdalkader · iabdalkader · commit 7e9cceea087d · 2023-11-13T17:27:25.000+01:00
Signed-off-by: iabdalkader &lt;i.abdalkader@gmail.com&gt;
diff --git a/ports/stm32/Makefile b/ports/stm32/Makefile
@@ -493,6 +493,10 @@ endif
 
 endif # MICROPY_PY_BLUETOOTH
 
+ifeq ($(MICROPY_PY_OPENAMP),1)
+SRC_C += metal/metal_port.c
+endif
+
 # SRC_O should be placed first to work around this LTO bug with binutils <2.35:
 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83967
 OBJ += $(addprefix $(BUILD)/, $(SRC_O))
diff --git a/ports/stm32/metal/metal_config.h b/ports/stm32/metal/metal_config.h
@@ -0,0 +1,47 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2023 Arduino SA
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * libmetal stm32 port.
+ */
+#ifndef MICROPY_INCLUDED_STM32_METAL_CONFIG_H
+#define MICROPY_INCLUDED_STM32_METAL_CONFIG_H
+
+#include <stdlib.h>
+#include "py/mphal.h"
+
+#define METAL_PROCESSOR_CPU_H           "metal/processor/arm/cpu.h"
+#define METAL_PROCESSOR_ATOMIC_H        "metal/processor/arm/atomic.h"
+
+#define HAVE_STDATOMIC_H                0
+#define HAVE_FUTEX_H                    0
+#define MAX_IRQS                        8
+#define METAL_MAX_DEVICE_REGIONS        2
+
+#define metal_cpu_yield()
+#define metal_sys_assert(cond)          assert(cond)
+#define metal_generic_default_poll()    MICROPY_EVENT_POLL_HOOK
+#define __metal_sleep_usec(usec)        mp_hal_delay_us(usec);
+
+#endif // MICROPY_INCLUDED_STM32_METAL_CONFIG_H
diff --git a/ports/stm32/metal/metal_port.c b/ports/stm32/metal/metal_port.c
@@ -0,0 +1,74 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2023 Arduino SA
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * libmetal stm32 port.
+ */
+#include "metal/sys.h"
+#include "metal/utilities.h"
+#include "metal/device.h"
+
+struct metal_state _metal;
+
+int metal_sys_init(const struct metal_init_params *params) {
+    metal_unused(params);
+    metal_bus_register(&metal_generic_bus);
+    return 0;
+}
+
+void metal_sys_finish(void) {
+    metal_bus_unregister(&metal_generic_bus);
+}
+
+unsigned int sys_irq_save_disable(void) {
+    return disable_irq();
+}
+
+void sys_irq_restore_enable(unsigned int state) {
+    enable_irq(state);
+}
+
+void sys_irq_enable(unsigned int vector) {
+    metal_unused(vector);
+}
+
+void sys_irq_disable(unsigned int vector) {
+    metal_unused(vector);
+}
+
+void *metal_machine_io_mem_map(void *va, metal_phys_addr_t pa,
+    size_t size, unsigned int flags) {
+    metal_unused(pa);
+    metal_unused(size);
+    metal_unused(flags);
+    return va;
+}
+
+void metal_machine_cache_flush(void *addr, unsigned int len) {
+    SCB_CleanDCache_by_Addr((uint32_t *)addr, len);
+}
+
+void metal_machine_cache_invalidate(void *addr, unsigned int len) {
+    SCB_CleanInvalidateDCache_by_Addr((uint32_t *)addr, len);
+}
