From c814be02967850a204721ceb1e989df92961fc26 Mon Sep 17 00:00:00 2001 From: Nick Brassel Date: Wed, 28 Jun 2023 13:07:14 +1000 Subject: STM32H723 support (#21352) --- .../boards/GENERIC_STM32_H723XG/board/board.mk | 12 ++++++++ .../boards/GENERIC_STM32_H723XG/board/extra.c | 36 ++++++++++++++++++++++ 2 files changed, 48 insertions(+) create mode 100644 platforms/chibios/boards/GENERIC_STM32_H723XG/board/board.mk create mode 100755 platforms/chibios/boards/GENERIC_STM32_H723XG/board/extra.c (limited to 'platforms/chibios/boards/GENERIC_STM32_H723XG/board') diff --git a/platforms/chibios/boards/GENERIC_STM32_H723XG/board/board.mk b/platforms/chibios/boards/GENERIC_STM32_H723XG/board/board.mk new file mode 100644 index 0000000000..3511f752a9 --- /dev/null +++ b/platforms/chibios/boards/GENERIC_STM32_H723XG/board/board.mk @@ -0,0 +1,12 @@ +# List of all the board related files. +BOARDSRC = $(CHIBIOS)/os/hal/boards/ST_NUCLEO144_H723ZG/board.c + +# Extra files +BOARDSRC += $(BOARD_PATH)/board/extra.c + +# Required include directories +BOARDINC = $(CHIBIOS)/os/hal/boards/ST_NUCLEO144_H723ZG + +# Shared variables +ALLCSRC += $(BOARDSRC) +ALLINC += $(BOARDINC) diff --git a/platforms/chibios/boards/GENERIC_STM32_H723XG/board/extra.c b/platforms/chibios/boards/GENERIC_STM32_H723XG/board/extra.c new file mode 100755 index 0000000000..fce0b4abad --- /dev/null +++ b/platforms/chibios/boards/GENERIC_STM32_H723XG/board/extra.c @@ -0,0 +1,36 @@ +// Copyright 2023 Nick Brassel (@tzarc) +// SPDX-License-Identifier: GPL-2.0-or-later +#include +#define BOOTLOADER_MAGIC 0xDEADBEEF + +//////////////////////////////////////////////////////////////////////////////// +// Different signalling for bootloader entry +// - RAM is cleared on reset, so we can't use the usual __ram0_end__ symbol. +// - Use backup registers in the RTC peripheral to store the magic value instead. + +static inline void enable_backup_register_access(void) { + PWR->CR1 |= PWR_CR1_DBP; +} + +static inline void disable_backup_register_access(void) { + PWR->CR1 &= ~PWR_CR1_DBP; +} + +void bootloader_marker_enable(void) { + enable_backup_register_access(); + RTC->BKP0R = BOOTLOADER_MAGIC; + disable_backup_register_access(); +} + +bool bootloader_marker_active(void) { + enable_backup_register_access(); + bool ret = RTC->BKP0R == BOOTLOADER_MAGIC; + disable_backup_register_access(); + return ret; +} + +void bootloader_marker_disable(void) { + enable_backup_register_access(); + RTC->BKP0R = 0; + disable_backup_register_access(); +} -- cgit v1.2.3