Adding USB bootloader support

Makefile

@@ -79,25 +79,32 @@ BINBIN=outp.bin
 MCFLAGS=-mcpu=cortex-m3 -march=armv7-m -mthumb -Wall -Wextra
 
 # COMPILE FLAGS
-DEFS_HS=-DUSE_STDPERIPH_DRIVER -DSTM32F10X_MD -DHSE_VALUE=$(OSC)
+DEFS_HS=-DUSE_STDPERIPH_DRIVER -DSTM32F10X_MD -DHSE_VALUE=$(OSC) -DVECT_TAB_OFFSET=0x0
+DEFS_HS_BL=-DUSE_STDPERIPH_DRIVER -DSTM32F10X_MD -DHSE_VALUE=$(OSC) -DVECT_TAB_OFFSET=0x2000
 
 CFLAGS=-c $(MCFLAGS) $(INCLUDES)
 CXXFLAGS=-c $(MCFLAGS) $(INCLUDES)
 
 # LINKER FLAGS
-LDSCRIPT=stm32f10x_link.ld
+LDSCRIPT=normal.ld
-LDFLAGS =-T $(LDSCRIPT) $(MCFLAGS) --specs=nosys.specs $(INCLUDES_LIBS) $(LINK_LIBS)
+LDSCRIPT_BL=bootloader.ld
+LDFLAGS=$(MCFLAGS) --specs=nosys.specs $(INCLUDES_LIBS) $(LINK_LIBS)
 
 # Build Rules
-.PHONY: all release hs debug clean
+.PHONY: all release hs bl debug clean
 
 all: hs
 
-hs: CFLAGS+=$(DEFS_HS) -Os -MMD -ffunction-sections -fdata-sections -nostdlib -DCUSTOM_NEW -DNO_EXCEPTIONS
+hs: CFLAGS+=$(DEFS_HS) -Os -ffunction-sections -fdata-sections -nostdlib -DCUSTOM_NEW -DNO_EXCEPTIONS
-hs: CXXFLAGS+=$(DEFS_HS) -Os -MMD -fno-exceptions -ffunction-sections -fdata-sections -nostdlib -fno-rtti -DCUSTOM_NEW -DNO_EXCEPTIONS
+hs: CXXFLAGS+=$(DEFS_HS) -Os -fno-exceptions -ffunction-sections -fdata-sections -nostdlib -fno-rtti -DCUSTOM_NEW -DNO_EXCEPTIONS
-hs: LDFLAGS+=-Os --specs=nano.specs
+hs: LDFLAGS+=-T $(LDSCRIPT_N) -Os --specs=nano.specs
 hs: release
 
+bl: CFLAGS+=$(DEFS_HS_BL) -Os -ffunction-sections -fdata-sections -nostdlib -DCUSTOM_NEW -DNO_EXCEPTIONS
+bl: CXXFLAGS+=$(DEFS_HS_BL) -Os -fno-exceptions -ffunction-sections -fdata-sections -nostdlib -fno-rtti -DCUSTOM_NEW -DNO_EXCEPTIONS
+bl: LDFLAGS+=-T $(LDSCRIPT_BL) -Os --specs=nano.specs
+bl: release
+
 debug: CFLAGS+=-g $(DEFS_HS)
 debug: CXXFLAGS+=-g $(DEFS_HS)
 debug: LDFLAGS+=-g
@@ -151,6 +158,22 @@ ifneq ($(wildcard /opt/openocd/bin/openocd),)
 	/opt/openocd/bin/openocd -f /opt/openocd/scripts/interface/stlink-v2-1.cfg -f /opt/openocd/share/openocd/scripts/target/stm32f1x.cfg -c "program bin/$(BINELF) verify reset exit"
 endif
 
+stlink-bl:
+ifneq ($(wildcard /usr/bin/openocd),)
+	/usr/bin/openocd -f /usr/share/openocd/scripts/interface/stlink-v2-1.cfg -f /usr/share/openocd/scripts/target/stm32f1x.cfg -c "program STM32F10X_Lib/utils/bootloader/generic_boot20_pc13.bin verify reset exit 0x08002000"
+	/usr/bin/openocd -f /usr/share/openocd/scripts/interface/stlink-v2-1.cfg -f /usr/share/openocd/scripts/target/stm32f1x.cfg -c "program bin/$(BINBIN) verify reset exit 0x08002000"
+endif
+
+ifneq ($(wildcard /usr/local/bin/openocd),)
+	/usr/local/bin/openocd -f /usr/local/share/openocd/scripts/interface/stlink-v2-1.cfg -f /usr/local/share/openocd/scripts/target/stm32f1x.cfg -c "program STM32F10X_Lib/utils/bootloader/generic_boot20_pc13.bin verify reset exit 0x08002000"
+	/usr/local/bin/openocd -f /usr/local/share/openocd/scripts/interface/stlink-v2-1.cfg -f /usr/local/share/openocd/scripts/target/stm32f1x.cfg -c "program bin/$(BINBIN) verify reset exit 0x08002000"
+endif
+
+ifneq ($(wildcard /opt/openocd/bin/openocd),)
+	/opt/openocd/bin/openocd -f /opt/openocd/scripts/interface/stlink-v2-1.cfg -f /opt/openocd/share/openocd/scripts/target/stm32f1x.cfg -c "program STM32F10X_Lib/utils/bootloader/generic_boot20_pc13.bin verify reset exit 0x08002000"
+	/opt/openocd/bin/openocd -f /opt/openocd/scripts/interface/stlink-v2-1.cfg -f /opt/openocd/share/openocd/scripts/target/stm32f1x.cfg -c "program bin/$(BINBIN) verify reset exit 0x08002000"
+endif
+
 serial:
 ifneq ($(wildcard /usr/local/bin/stm32flash),)
 	/usr/local/bin/stm32flash -w bin/$(BINBIN) -g 0x0 $(devser)

bootloader.ld

@@ -0,0 +1,26 @@
+/*
+ *   Copyright (C) 2016 by Andy Uribe CA6JAU
+ *
+ *   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 2 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, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* Memory areas */
+MEMORY
+{
+	ROM (rx)      : ORIGIN = 0x08002000, LENGTH = 56K    /* FLASH */
+	RAM (xrw)     : ORIGIN = 0x20000000, LENGTH = 20K    /* Main RAM */
+}
+
+INCLUDE stm32f10x_link.ld

normal.ld

@@ -0,0 +1,26 @@
+/*
+ *   Copyright (C) 2016 by Andy Uribe CA6JAU
+ *
+ *   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 2 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, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* Memory areas */
+MEMORY
+{
+	ROM (rx)      : ORIGIN = 0x08000000, LENGTH = 64K    /* FLASH */
+	RAM (xrw)     : ORIGIN = 0x20000000, LENGTH = 20K    /* Main RAM */
+}
+
+INCLUDE stm32f10x_link.ld

stm32f10x_link.ld

@@ -23,13 +23,6 @@ _min_stack_size = 0x0800;
 /* The entry point in the interrupt vector table */
 ENTRY(Reset_Handler)
 
-/* Memory areas */
-MEMORY
-{
-	ROM (rx)      : ORIGIN = 0x08000000, LENGTH = 64K    /* FLASH */
-	RAM (xrw)     : ORIGIN = 0x20000000, LENGTH = 20K    /* Main RAM */
-}
-
 /* Stack start address (end of 20K RAM) */
 _estack = ORIGIN(RAM) + LENGTH(RAM);