add linking script for stm32f103x8 without stm32duino bootloader

stm32f103x8-dfu.ld

@@ -0,0 +1,28 @@
+/* This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* linker script for STM32F103x8 based boards (64kB flash, 20kB RAM)
+ * with additional STM32duino-booloader USB DFU bootloader (8kB flash, 0kB RAM)
+ * from https://github.com/rogerclarkmelbourne/STM32duino-bootloader
+ */
+
+/* Define memory regions. */
+MEMORY
+{
+	rom (rx) : ORIGIN = 0x08002000, LENGTH = 56K
+	ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
+}
+
+/* Include the common ld script. */
+INCLUDE libopencm3_stm32f1.ld