diff options
author | Ryan <fauxpark@gmail.com> | 2021-12-27 21:10:07 +1100 |
---|---|---|
committer | GitHub <noreply@github.com> | 2021-12-27 21:10:07 +1100 |
commit | 6bc870d899c474bce82457699ec4b753d1538123 (patch) | |
tree | 600b8dda41f4b90f98199d4afd3037374a679a74 /platforms/chibios/bootloaders/gd32v_dfu.c | |
parent | cffe143ca20d938c910b59410dcd3d96dd7d433b (diff) |
Refactor `bootloader_jump()` implementations (#15450)
* Refactor `bootloader_jump()` implementations
* Fix tests?
* Rename `atmel-samba` to `md-boot`
Diffstat (limited to 'platforms/chibios/bootloaders/gd32v_dfu.c')
-rw-r--r-- | platforms/chibios/bootloaders/gd32v_dfu.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/platforms/chibios/bootloaders/gd32v_dfu.c b/platforms/chibios/bootloaders/gd32v_dfu.c new file mode 100644 index 0000000000..1ab0882084 --- /dev/null +++ b/platforms/chibios/bootloaders/gd32v_dfu.c @@ -0,0 +1,40 @@ +/* Copyright 2021 QMK + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "bootloader.h" + +#include <ch.h> + +#define DBGMCU_KEY_UNLOCK 0x4B5A6978 +#define DBGMCU_CMD_RESET 0x1 + +__IO uint32_t *DBGMCU_KEY = (uint32_t *)DBGMCU_BASE + 0x0CU; +__IO uint32_t *DBGMCU_CMD = (uint32_t *)DBGMCU_BASE + 0x08U; + +__attribute__((weak)) +void bootloader_jump(void) { + /* The MTIMER unit of the GD32VF103 doesn't have the MSFRST + * register to generate a software reset request. + * BUT instead two undocumented registers in the debug peripheral + * that allow issueing a software reset. WHO would need the MSFRST + * register anyway? Source: + * https://github.com/esmil/gd32vf103inator/blob/master/include/gd32vf103/dbg.h */ + *DBGMCU_KEY = DBGMCU_KEY_UNLOCK; + *DBGMCU_CMD = DBGMCU_CMD_RESET; +} + +/* Jumping to bootloader is not possible from user code. */ +void enter_bootloader_mode_if_requested(void) { } |