stm32/mboot: Pass initial_r0 to early-init and get-reset-mode funcs.

This allows a board to modify initial_r0 if needed.

Also make default board behaviour functions always available, named as
mboot_get_reset_mode_default and mboot_state_change_default.
Signed-off-by: Damien George <damien@micropython.org>

ports/stm32/boards/LEGO_HUB_NO6/board_init.c

@@ -133,7 +133,7 @@ void board_mboot_led_state(int led, int state) {
     hub_display_update();
 }
 
-int board_mboot_get_reset_mode(void) {
+int board_mboot_get_reset_mode(uint32_t *initial_r0) {
     board_button_init();
     int reset_mode = BOARDCTRL_RESET_MODE_NORMAL;
     if (board_button_state()) {

ports/stm32/boards/LEGO_HUB_NO6/mpconfigboard.h

@@ -127,7 +127,7 @@ extern struct _spi_bdev_t spi_bdev;
 #define MBOOT_BOARD_LED_INIT                     board_mboot_led_init
 #define MBOOT_BOARD_LED_STATE                    board_mboot_led_state
 
-#define MBOOT_BOARD_EARLY_INIT                   board_init
+#define MBOOT_BOARD_EARLY_INIT(initial_r0)       board_init()
 #define MBOOT_BOARD_CLEANUP                      board_mboot_cleanup
 #define MBOOT_BOARD_GET_RESET_MODE               board_mboot_get_reset_mode
 
@@ -138,5 +138,5 @@ void board_init(void);
 void board_mboot_cleanup(int reset_mode);
 void board_mboot_led_init(void);
 void board_mboot_led_state(int led, int state);
-int board_mboot_get_reset_mode(void);
+int board_mboot_get_reset_mode(uint32_t *initial_r0);
 void *btstack_chipset_cc256x_instance(void);

ports/stm32/boards/PYBD_SF2/mpconfigboard.h

@@ -221,5 +221,5 @@ extern struct _spi_bdev_t spi_bdev2;
 #define MBOOT_SPIFLASH2_SPIFLASH    (&spi_bdev2.spiflash)
 #define MBOOT_SPIFLASH2_CONFIG      (&spiflash2_config)
 
-#define MBOOT_BOARD_EARLY_INIT mboot_board_early_init
+#define MBOOT_BOARD_EARLY_INIT(initial_r0) mboot_board_early_init()
 void mboot_board_early_init(void);

ports/stm32/mboot/main.c

@@ -1346,9 +1346,7 @@ void stm32_main(uint32_t initial_r0) {
     SCB_EnableDCache();
     #endif
 
-    #if defined(MBOOT_BOARD_EARLY_INIT)
-    MBOOT_BOARD_EARLY_INIT();
-    #endif
+    MBOOT_BOARD_EARLY_INIT(&initial_r0);
 
     #ifdef MBOOT_BOOTPIN_PIN
     mp_hal_pin_config(MBOOT_BOOTPIN_PIN, MP_HAL_PIN_MODE_INPUT, MBOOT_BOOTPIN_PULL, 0);
@@ -1361,7 +1359,7 @@ void stm32_main(uint32_t initial_r0) {
         goto enter_bootloader;
     }
 
-    int reset_mode = mboot_get_reset_mode();
+    int reset_mode = MBOOT_BOARD_GET_RESET_MODE(&initial_r0);
     if (reset_mode != BOARDCTRL_RESET_MODE_BOOTLOADER) {
         // Bootloader mode was not selected so try to enter the application,
         // passing through the reset_mode.  This will return if the application

ports/stm32/mboot/mboot.h

@@ -38,8 +38,20 @@
 #define NORETURN __attribute__((noreturn))
 #define MP_ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
 
+#ifndef MBOOT_BOARD_EARLY_INIT
+#define MBOOT_BOARD_EARLY_INIT(initial_r0)
+#endif
+
 #ifndef MBOOT_BOARD_ENTRY_INIT
-#define MBOOT_BOARD_ENTRY_INIT mboot_entry_init
+#define MBOOT_BOARD_ENTRY_INIT(initial_r0) mboot_entry_init_default()
+#endif
+
+#ifndef MBOOT_BOARD_GET_RESET_MODE
+#define MBOOT_BOARD_GET_RESET_MODE(initial_r0) mboot_get_reset_mode_default()
+#endif
+
+#ifndef MBOOT_BOARD_STATE_CHANGE
+#define MBOOT_BOARD_STATE_CHANGE(state, arg) mboot_state_change_default((state), (arg))
 #endif
 
 #ifndef MBOOT_ADDRESS_SPACE_64BIT
@@ -154,7 +166,7 @@ int do_write(uint32_t addr, const uint8_t *src8, size_t len, bool dry_run);
 const uint8_t *elem_search(const uint8_t *elem, uint8_t elem_id);
 int fsload_process(void);
 
-static inline void mboot_entry_init(uint32_t *initial_r0) {
+static inline void mboot_entry_init_default(void) {
     // Init subsystems (mboot_get_reset_mode() may call these, calling them again is ok)
     led_init();
 
@@ -167,20 +179,15 @@ static inline void mboot_entry_init(uint32_t *initial_r0) {
     #endif
 }
 
-#if defined(MBOOT_BOARD_GET_RESET_MODE)
-static inline int mboot_get_reset_mode(void) {
-    return MBOOT_BOARD_GET_RESET_MODE();
-}
-#else
-int mboot_get_reset_mode(void);
-#endif
+int mboot_get_reset_mode_default(void);
+void mboot_state_change_default(mboot_state_t state, uint32_t arg);
 
-#if defined(MBOOT_BOARD_STATE_CHANGE)
 static inline void mboot_state_change(mboot_state_t state, uint32_t arg) {
+    #if defined(MBOOT_BOARD_STATE_CHANGE)
     return MBOOT_BOARD_STATE_CHANGE(state, arg);
+    #else
+    return mboot_state_change_default(state, arg);
+    #endif
 }
-#else
-void mboot_state_change(mboot_state_t state, uint32_t arg);
-#endif
 
 #endif // MICROPY_INCLUDED_STM32_MBOOT_MBOOT_H

ports/stm32/mboot/ui.c

@@ -136,7 +136,7 @@ void led0_update(void) {
 /******************************************************************************/
 // User button
 
-#if !defined(MBOOT_BOARD_GET_RESET_MODE)
+#ifdef MICROPY_HW_USRSW_PIN
 
 #define RESET_MODE_NUM_STATES (4)
 #define RESET_MODE_TIMEOUT_CYCLES (8)
@@ -158,7 +158,7 @@ static int usrbtn_state(void) {
     return mp_hal_pin_read(MICROPY_HW_USRSW_PIN) == MICROPY_HW_USRSW_PRESSED;
 }
 
-int mboot_get_reset_mode(void) {
+int mboot_get_reset_mode_default(void) {
     usrbtn_init();
     int reset_mode = BOARDCTRL_RESET_MODE_NORMAL;
     if (usrbtn_state()) {
@@ -198,9 +198,7 @@ int mboot_get_reset_mode(void) {
 /******************************************************************************/
 // State change
 
-#if !defined(MBOOT_BOARD_STATE_CHANGE)
-
-void mboot_state_change(mboot_state_t state, uint32_t arg) {
+void mboot_state_change_default(mboot_state_t state, uint32_t arg) {
     switch (state) {
         case MBOOT_STATE_DFU_START:
             led_state_all(0);
@@ -255,5 +253,3 @@ void mboot_state_change(mboot_state_t state, uint32_t arg) {
             break;
     }
 }
-
-#endif