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-rw-r--r--platforms/chibios/bootloaders/tinyuf2.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/platforms/chibios/bootloaders/tinyuf2.c b/platforms/chibios/bootloaders/tinyuf2.c
new file mode 100644
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+++ b/platforms/chibios/bootloaders/tinyuf2.c
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+/* 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>
+
+// From tinyuf2's board_api.h
+#define DBL_TAP_MAGIC 0xF01669EF
+
+// defined by linker script
+extern uint32_t _board_dfu_dbl_tap[];
+#define DBL_TAP_REG _board_dfu_dbl_tap[0]
+
+__attribute__((weak))
+void bootloader_jump(void) {
+ DBL_TAP_REG = DBL_TAP_MAGIC;
+ NVIC_SystemReset();
+}
+
+/* not needed, no two-stage reset */
+void enter_bootloader_mode_if_requested(void) { }