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stm32/mboot: Allow a board more control over entry initialisation. 

If MBOOT_BOARD_ENTRY_INIT is defined by a board then that function must now
make sure system clocks are configured, eg by calling mboot_entry_init().

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2022-02-16 22:22:04 +11:00
parent 2b62f12103
commit 5995fb5261
2 changed files with 21 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
ports/stm32/mboot/main.c
View File

@ -1507,14 +1507,7 @@ void stm32_main(uint32_t initial_r0) {
enter_bootloader:
// Init subsystems (mboot_get_reset_mode() may call these, calling them again is ok)
led_init();
// set the system clock to be HSE
SystemClock_Config();
// Ensure IRQs are enabled (needed coming out of ST bootloader on H7)
__set_PRIMASK(0);
MBOOT_BOARD_ENTRY_INIT(&initial_r0);
#if USE_USB_POLLING
// irqs with a priority value greater or equal to "pri" will be disabled
@ -1524,10 +1517,6 @@ enter_bootloader:
__ASM volatile ("msr basepri_max, %0" : : "r" (pri) : "memory");
#endif
#if defined(MBOOT_BOARD_ENTRY_INIT)
MBOOT_BOARD_ENTRY_INIT(initial_r0);
#endif
#if defined(MBOOT_SPIFLASH_ADDR)
MBOOT_SPIFLASH_SPIFLASH->config = MBOOT_SPIFLASH_CONFIG;
mp_spiflash_init(MBOOT_SPIFLASH_SPIFLASH);

22
ports/stm32/mboot/mboot.h
View File

@ -26,8 +26,7 @@
#ifndef MICROPY_INCLUDED_STM32_MBOOT_MBOOT_H
#define MICROPY_INCLUDED_STM32_MBOOT_MBOOT_H
#include <stdint.h>
#include <stddef.h>
#include "py/mphal.h"
// Use this to tag global static data in RAM that doesn't need to be zeroed on startup
#define SECTION_NOZERO_BSS __attribute__((section(".nozero_bss")))
@ -39,6 +38,10 @@
#define NORETURN __attribute__((noreturn))
#define MP_ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
#ifndef MBOOT_BOARD_ENTRY_INIT
#define MBOOT_BOARD_ENTRY_INIT mboot_entry_init
#endif
enum {
MBOOT_ERRNO_FLASH_ERASE_DISALLOWED = 200,
MBOOT_ERRNO_FLASH_ERASE_FAILED,
@ -86,6 +89,8 @@ enum {
extern uint8_t _estack[ELEM_DATA_SIZE];
void systick_init(void);
void led_init(void);
void SystemClock_Config(void);
uint32_t get_le32(const uint8_t *b);
void led_state_all(unsigned int mask);
@ -101,4 +106,17 @@ int do_write(uint32_t addr, const uint8_t *src8, size_t len);
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) {
// Init subsystems (mboot_get_reset_mode() may call these, calling them again is ok)
led_init();
// set the system clock to be HSE
SystemClock_Config();
#if defined(STM32H7)
// Ensure IRQs are enabled (needed coming out of ST bootloader on H7)
__set_PRIMASK(0);
#endif
}
#endif // MICROPY_INCLUDED_STM32_MBOOT_MBOOT_H