Added files and made changes to support linux upload

STM32F1XX/platform.txt

@@ -100,9 +100,10 @@ recipe.size.regex.data=^(?:\.data|\.bss|\.noinit)\s+([0-9]+).*
 # Upload using Maple bootloader over DFU
 tools.maple_upload.cmd=maple_upload
 tools.maple_upload.cmd.windows=maple_upload.bat
-#tools.maple_upload.cmd.linux=
+#tools.maple_upload.cmd.linux=maple_upload                ### Added by @Chillitronix
 tools.maple_upload.path={runtime.hardware.path}/tools/win
 tools.maple_upload.path.macosx={runtime.hardware.path}/tools/macosx
+tools.maple_upload.path.linux={runtime.hardware.path}/tools/linux    ### Added by @Chillitronix
 
 tools.maple_upload.upload.params.verbose=-d
 tools.maple_upload.upload.params.quiet=

tools/linux/maple_upload

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -e
+
+if [ $# -lt 4 ]; then
+    echo "Usage: $0 $# <dummy_port> <altID> <usbID> <binfile>" >&2
+    exit 1
+fi
+dummy_port=$1; altID=$2; usbID=$3; binfile=$4
+
+DFU_UTIL=/usr/bin/dfu-util
+if [ ! -x ${DFU_UTIL} ]; then
+    echo "$0: error: cannot find ${DFU_UTIL}" >&2
+    exit 2
+fi
+
+${DFU_UTIL} -d ${usbID} -a ${altID} -D ${binfile}

tools/linux/readme.txt

@@ -0,0 +1 @@
+The maple upload script needs its rights to be set to 755