ports/rp2: Additions for rp2 init hooks.

Signed-off-by: Christopher Parrott <chris@pimoroni.com>

ports/rp2/CMakeLists.txt

@@ -412,6 +412,7 @@ endif()
 list(APPEND MICROPY_SOURCE_QSTR
     ${MICROPY_SOURCE_EXTMOD}
     ${MICROPY_SOURCE_USERMOD}
+    ${MICROPY_SOURCE_BOARD}
 )
 
 # Define mpy-cross flags
@@ -430,6 +431,7 @@ target_sources(${MICROPY_TARGET} PRIVATE
     ${MICROPY_SOURCE_LIB}
     ${MICROPY_SOURCE_DRIVERS}
     ${MICROPY_SOURCE_PORT}
+    ${MICROPY_SOURCE_BOARD}
 )
 
 target_link_libraries(${MICROPY_TARGET} micropy_lib_mbedtls)

ports/rp2/main.c

@@ -76,6 +76,9 @@ int main(int argc, char **argv) {
     // This is a tickless port, interrupts should always trigger SEV.
     SCB->SCR |= SCB_SCR_SEVONPEND_Msk;
 
+    // Hook for setting up anything that needs to be super early in the bootup process
+    MICROPY_BOARD_STARTUP();
+
     #if MICROPY_HW_ENABLE_UART_REPL
     bi_decl(bi_program_feature("UART REPL"))
     setup_default_uart();
@@ -146,6 +149,9 @@ int main(int argc, char **argv) {
     }
     #endif
 
+    // Hook for setting up anything that can wait until after other hardware features are initialised
+    MICROPY_BOARD_EARLY_INIT();
+
     for (;;) {
 
         // Initialise MicroPython runtime.
@@ -169,6 +175,9 @@ int main(int argc, char **argv) {
         mod_network_lwip_init();
         #endif
 
+        // Hook for setting up anything that should follow the MicroPy runtime but be prior to _boot.py
+        MICROPY_BOARD_LATE_INIT();
+
         // Execute _boot.py to set up the filesystem.
         #if MICROPY_VFS_FAT && MICROPY_HW_USB_MSC
         pyexec_frozen_module("_boot_fat.py", false);
@@ -207,6 +216,10 @@ int main(int argc, char **argv) {
 
     soft_reset_exit:
         mp_printf(MP_PYTHON_PRINTER, "MPY: soft reboot\n");
+
+        // Hook for resetting anything immediately following a soft reboot command
+        MICROPY_BOARD_EARLY_RESET();
+
         #if MICROPY_PY_NETWORK
         mod_network_deinit();
         #endif
@@ -227,6 +240,9 @@ int main(int argc, char **argv) {
 
         gc_sweep_all();
         mp_deinit();
+
+        // Hook for resetting anything after the MicroPy runtime has been deinitialised
+        MICROPY_BOARD_LATE_RESET();
     }
 
     return 0;

ports/rp2/mpconfigport.h

@@ -275,3 +275,23 @@ extern void lwip_lock_release(void);
 #define MICROPY_PY_BLUETOOTH_ENTER uint32_t atomic_state = 0;
 #define MICROPY_PY_BLUETOOTH_EXIT (void)atomic_state;
 #endif
+
+#ifndef MICROPY_BOARD_STARTUP
+#define MICROPY_BOARD_STARTUP()
+#endif
+
+#ifndef MICROPY_BOARD_EARLY_INIT
+#define MICROPY_BOARD_EARLY_INIT()
+#endif
+
+#ifndef MICROPY_BOARD_LATE_INIT
+#define MICROPY_BOARD_LATE_INIT()
+#endif
+
+#ifndef MICROPY_BOARD_EARLY_RESET
+#define MICROPY_BOARD_EARLY_RESET()
+#endif
+
+#ifndef MICROPY_BOARD_LATE_RESET
+#define MICROPY_BOARD_LATE_RESET()
+#endif