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stm32/boards/OPENMV_N6: Add .standby_mem attr to _boot_mem. #141

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Merged
iabdalkader merged 2 commits into from
Apr 16, 2026
Merged

stm32/boards/OPENMV_N6: Add .standby_mem attr to _boot_mem. #141

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abfbcf1
stm32/boards/OPENMV_N6: Add .ram_function_data attr to _boot_mem.
kwagyeman Apr 15, 2026
870143f
stm32: Disable TCMFLEX Power retention.
kwagyeman Apr 16, 2026
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4 changes: 2 additions & 2 deletions ports/stm32/boards/OPENMV_N6/board.c
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ void board_enter_bootloader(unsigned int n_args, const void *args) {
NVIC_SystemReset();
}

static char _boot_mem[128] __attribute__((aligned(1024)));
static char _boot_mem[128] __attribute__((aligned(1024), section(".ram_function_data")));

__attribute__((naked, noreturn, section(".ram_function"))) void ram_reset(void) {
// NVIC_SystemReset doesn't get inlined here.
Expand All @@ -119,7 +119,7 @@ void board_early_init(void) {

void board_enter_standby(void) {
HAL_PWREx_EnableTCMRetention();
HAL_PWREx_EnableTCMFLXRetention();
HAL_PWREx_DisableTCMFLXRetention();

uint32_t *boot_mem = (uint32_t *)_boot_mem;
boot_mem[0] = (uint32_t)(_boot_mem + sizeof(_boot_mem));
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