rename sketch and bootloader start sections labels

boards.txt

@@ -39,7 +39,7 @@ arduino_zero_edbg.build.variant=arduino_zero
 arduino_zero_edbg.build.variant_system_lib=
 arduino_zero_edbg.build.vid=0x2341
 arduino_zero_edbg.build.pid=0x804d
-arduino_zero_edbg.build.section.start=0x2000
+arduino_zero_edbg.build.sketch.start=0x2000
 arduino_zero_edbg.bootloader.tool=openocd
 arduino_zero_edbg.bootloader.file=zero/samd21_sam_ba.bin
 
@@ -86,7 +86,7 @@ arduino_zero_native.build.variant=arduino_zero
 arduino_zero_native.build.variant_system_lib=
 arduino_zero_native.build.vid=0x2341
 arduino_zero_native.build.pid=0x804d
-arduino_zero_native.build.section.start=0x2000
+arduino_zero_native.build.sketch.start=0x2000
 arduino_zero_native.bootloader.tool=openocd
 arduino_zero_native.bootloader.file=zero/samd21_sam_ba.bin
 
@@ -132,7 +132,7 @@ mkr1000.build.openocdscript=openocd_scripts/arduino_zero.cfg
 mkr1000.build.variant=mkr1000
 mkr1000.build.vid=0x2341
 mkr1000.build.pid=0x804e
-mkr1000.build.section.start=0x2000
+mkr1000.build.sketch.start=0x2000
 mkr1000.bootloader.tool=openocd
 mkr1000.bootloader.file=mkr1000/samd21_sam_ba_arduino_mkr1000.bin
 
@@ -162,7 +162,7 @@ mkrzero.build.openocdscript=openocd_scripts/arduino_zero.cfg
 mkrzero.build.variant=mkrzero
 mkrzero.build.vid=0x2341
 mkrzero.build.pid=0x804f
-mkrzero.build.section.start=0x2000
+mkrzero.build.sketch.start=0x2000
 mkrzero.bootloader.tool=openocd
 mkrzero.bootloader.file=mkrzero/samd21_sam_ba_arduino_mkrzero.bin
 
@@ -219,7 +219,7 @@ mzero_pro_bl_dbg.build.variant_system_lib=
 mzero_pro_bl_dbg.build.vid=0x2a03
 mzero_pro_bl_dbg.build.pid=0x804f
 mzero_pro_bl_dbg.build.preferred_out_format=hex
-mzero_pro_bl_dbg.build.section.start=0x4000
+mzero_pro_bl_dbg.build.sketch.start=0x4000
 
 mzero_pro_bl_dbg.bootloader.tool=openocd
 mzero_pro_bl_dbg.bootloader.cmd_unprotect=at91samd bootloader 0
@@ -257,7 +257,7 @@ mzero_pro_bl.build.variant_system_lib=
 mzero_pro_bl.build.vid=0x2a03
 mzero_pro_bl.build.pid=0x804f
 mzero_pro_bl.build.preferred_out_format=hex
-mzero_pro_bl.build.section.start=0x4000
+mzero_pro_bl.build.sketch.start=0x4000
 mzero_pro_bl.build.emu.mcu=atmega2560
 mzero_pro_bl.bootloader.tool=avrdude
 mzero_pro_bl.bootloader.low_fuses=0xff
@@ -292,7 +292,7 @@ mzero_bl.build.variant_system_lib=
 mzero_bl.build.vid=0x2a03
 mzero_bl.build.pid=0x804e
 mzero_bl.build.preferred_out_format=hex
-mzero_bl.build.section.start=0x4000
+mzero_bl.build.sketch.start=0x4000
 mzero_bl.build.emu.mcu=atmega2560
 mzero_bl.bootloader.tool=avrdude
 mzero_bl.bootloader.low_fuses=0xff
@@ -326,7 +326,7 @@ tian.build.variant_system_lib=
 tian.build.vid=0x2a03
 tian.build.pid=0x8052
 tian.build.preferred_out_format=hex
-tian.build.section.start=0x4000
+tian.build.sketch.start=0x4000
 tian.build.emu.mcu=atmega2560
 tian.bootloader.tool=avrdude
 tian.bootloader.low_fuses=0xff

platform.txt

@@ -74,6 +74,10 @@ build.usb_flags=-DUSB_VID={build.vid} -DUSB_PID={build.pid} -DUSBCON '-DUSB_MANU
 # numeric vendor ID if available or by board's specific value.
 build.usb_manufacturer="Unknown"
 
+# Sketch and bootloader start section
+# -----------------------------------
+build.sketch.start=0x2000
+build.bootloader.start=0x0000
 
 # Compile patterns
 # ----------------
@@ -150,8 +154,10 @@ tools.openocd.cmd.windows=bin/openocd.exe
 
 tools.openocd.upload.params.verbose=-d2
 tools.openocd.upload.params.quiet=-d0
-tools.openocd.upload.pattern="{path}/{cmd}" {upload.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{{build.path}/{build.project_name}.bin}} verify reset {build.section.start}; shutdown"
+tools.openocd.upload.pattern="{path}/{cmd}" {upload.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{{build.path}/{build.project_name}.bin}} verify reset {build.sketch.start}; shutdown"
 
+
+# Program flashes the binary at 0x0000, so use the linker script without_bootloader
 tools.openocd.program.params.verbose=-d2
 tools.openocd.program.params.quiet=-d0
 tools.openocd.program.pattern="{path}/{cmd}" {program.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{{build.path}/{build.project_name}.elf}} verify reset; shutdown"