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-rw-r--r--builddefs/mcu_selection.mk6
-rw-r--r--docs/flashing.md4
-rw-r--r--platforms/chibios/boards/common/ld/STM32F303xC_tinyuf2.ld88
3 files changed, 95 insertions, 3 deletions
diff --git a/builddefs/mcu_selection.mk b/builddefs/mcu_selection.mk
index b566b1b5ac..1d05902fab 100644
--- a/builddefs/mcu_selection.mk
+++ b/builddefs/mcu_selection.mk
@@ -313,7 +313,11 @@ ifneq ($(findstring STM32F303, $(MCU)),)
# Linker script to use
# - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
# or <keyboard_dir>/ld/
- MCU_LDSCRIPT ?= STM32F303xC
+ ifeq ($(strip $(BOOTLOADER)), tinyuf2)
+ MCU_LDSCRIPT ?= STM32F303xC_tinyuf2
+ else
+ MCU_LDSCRIPT ?= STM32F303xC
+ endif
# Startup code to use
# - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
diff --git a/docs/flashing.md b/docs/flashing.md
index a636f19c72..443fa3123e 100644
--- a/docs/flashing.md
+++ b/docs/flashing.md
@@ -324,7 +324,7 @@ Flashing sequence:
## tinyuf2
-Keyboards may opt into supporting the tinyuf2 bootloader. This is currently only supported on the F401/F411 blackpill.
+Keyboards may opt into supporting the tinyuf2 bootloader. This is currently only supported on F303/F401/F411.
The `rules.mk` setting for this bootloader is `tinyuf2`, and can be specified at the keymap or user level.
@@ -365,7 +365,7 @@ CLI Flashing sequence:
## uf2boot
-Keyboards may opt into supporting the uf2boot bootloader. This is currently only supported on the F103 bluepill.
+Keyboards may opt into supporting the uf2boot bootloader. This is currently only supported on F103.
The `rules.mk` setting for this bootloader is `uf2boot`, and can be specified at the keymap or user level.
diff --git a/platforms/chibios/boards/common/ld/STM32F303xC_tinyuf2.ld b/platforms/chibios/boards/common/ld/STM32F303xC_tinyuf2.ld
new file mode 100644
index 0000000000..809c53cba4
--- /dev/null
+++ b/platforms/chibios/boards/common/ld/STM32F303xC_tinyuf2.ld
@@ -0,0 +1,88 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/*
+ * STM32F303xC memory setup.
+ */
+MEMORY
+{
+ flash0 (rx) : org = 0x08000000 + 16k, len = 256k - 16k
+ flash1 (rx) : org = 0x00000000, len = 0
+ flash2 (rx) : org = 0x00000000, len = 0
+ flash3 (rx) : org = 0x00000000, len = 0
+ flash4 (rx) : org = 0x00000000, len = 0
+ flash5 (rx) : org = 0x00000000, len = 0
+ flash6 (rx) : org = 0x00000000, len = 0
+ flash7 (rx) : org = 0x00000000, len = 0
+ ram0 (wx) : org = 0x20000000, len = 40k
+ ram1 (wx) : org = 0x00000000, len = 0
+ ram2 (wx) : org = 0x00000000, len = 0
+ ram3 (wx) : org = 0x00000000, len = 0
+ ram4 (wx) : org = 0x10000000, len = 8k
+ ram5 (wx) : org = 0x00000000, len = 0
+ ram6 (wx) : org = 0x00000000, len = 0
+ ram7 (wx) : org = 0x00000000, len = 0
+}
+
+/* For each data/text section two region are defined, a virtual region
+ and a load region (_LMA suffix).*/
+
+/* Flash region to be used for exception vectors.*/
+REGION_ALIAS("VECTORS_FLASH", flash0);
+REGION_ALIAS("VECTORS_FLASH_LMA", flash0);
+
+/* Flash region to be used for constructors and destructors.*/
+REGION_ALIAS("XTORS_FLASH", flash0);
+REGION_ALIAS("XTORS_FLASH_LMA", flash0);
+
+/* Flash region to be used for code text.*/
+REGION_ALIAS("TEXT_FLASH", flash0);
+REGION_ALIAS("TEXT_FLASH_LMA", flash0);
+
+/* Flash region to be used for read only data.*/
+REGION_ALIAS("RODATA_FLASH", flash0);
+REGION_ALIAS("RODATA_FLASH_LMA", flash0);
+
+/* Flash region to be used for various.*/
+REGION_ALIAS("VARIOUS_FLASH", flash0);
+REGION_ALIAS("VARIOUS_FLASH_LMA", flash0);
+
+/* Flash region to be used for RAM(n) initialization data.*/
+REGION_ALIAS("RAM_INIT_FLASH_LMA", flash0);
+
+/* RAM region to be used for Main stack. This stack accommodates the processing
+ of all exceptions and interrupts.*/
+REGION_ALIAS("MAIN_STACK_RAM", ram0);
+
+/* RAM region to be used for the process stack. This is the stack used by
+ the main() function.*/
+REGION_ALIAS("PROCESS_STACK_RAM", ram0);
+
+/* RAM region to be used for data segment.*/
+REGION_ALIAS("DATA_RAM", ram0);
+REGION_ALIAS("DATA_RAM_LMA", flash0);
+
+/* RAM region to be used for BSS segment.*/
+REGION_ALIAS("BSS_RAM", ram0);
+
+/* RAM region to be used for the default heap.*/
+REGION_ALIAS("HEAP_RAM", ram0);
+
+/* Generic rules inclusion.*/
+INCLUDE rules.ld
+
+/* TinyUF2 bootloader reset support */
+_board_dfu_dbl_tap = ORIGIN(ram0) + 40k - 4; /* this is based off the linker file for tinyuf2 */