From 333f8bf0d7a4f3efd56a60a5328d15b1e0be4942 Mon Sep 17 00:00:00 2001
From: Drashna Jaelre <drashna@live.com>
Date: Sat, 8 Jun 2024 18:08:53 -0700
Subject: [PATCH] Add STM32F405RG ld script for tinyuf2 (#23885)

---
 .../boards/common/ld/STM32F405xG_tinyuf2.ld   | 89 +++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 platforms/chibios/boards/common/ld/STM32F405xG_tinyuf2.ld

diff --git a/platforms/chibios/boards/common/ld/STM32F405xG_tinyuf2.ld b/platforms/chibios/boards/common/ld/STM32F405xG_tinyuf2.ld
new file mode 100644
index 0000000000..1ee4aa1a06
--- /dev/null
+++ b/platforms/chibios/boards/common/ld/STM32F405xG_tinyuf2.ld
@@ -0,0 +1,89 @@
+/*
+    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.
+*/
+
+/*
+ * STM32F405xG memory setup.
+ * Note: Use of ram1 and ram2 is mutually exclusive with use of ram0.
+ */
+MEMORY
+{
+    flash0 (rx) : org = 0x08000000 + 64k, len = 1M - 64k /* tinyuf2 bootloader requires app to be located at 64k offset for this MCU */
+    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 = 128k      /* SRAM1 + SRAM2 */
+    ram1   (wx) : org = 0x20000000, len = 112k      /* SRAM1 */
+    ram2   (wx) : org = 0x2001C000, len = 16k       /* SRAM2 */
+    ram3   (wx) : org = 0x00000000, len = 0
+    ram4   (wx) : org = 0x10000000, len = 64k       /* CCM SRAM */
+    ram5   (wx) : org = 0x40024000, len = 4k        /* BCKP SRAM */
+    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) + 64k - 4; /* this is based off the linker file for tinyuf2 */