diff --git a/.ci/ci b/.ci/ci
index abfd7d2e2..47678769f 100755
--- a/.ci/ci
+++ b/.ci/ci
@@ -60,10 +60,6 @@ make -j8 firmware
 make -j8 firmware-btc
 make -j8 factory-setup
 
-# Semihosting
-make -j8 bootloader-semihosting
-make -j8 firmware-semihosting
-
 # Disallow some symbols in the final binary that we don't want.
 if arm-none-eabi-nm build/bin/firmware.elf | grep -q "float_to_decimal_common_shortest"; then
     echo "Rust fmt float formatting like {.1} adds significant binary bloat."
diff --git a/Makefile b/Makefile
index f7ada1f80..071a902fb 100644
--- a/Makefile
+++ b/Makefile
@@ -38,11 +38,6 @@ build-build-rust-unit-tests/Makefile:
 	cd build-build-rust-unit-tests && cmake .. -DCOVERAGE=OFF -DSANITIZE_ADDRESS=OFF -DSANITIZE_UNDEFINED=OFF
 	$(MAKE) -C py/bitbox02
 
-build-semihosting/Makefile:
-	mkdir -p build-semihosting
-	cd build-semihosting && cmake .. -DCMAKE_TOOLCHAIN_FILE=arm.cmake -DSEMIHOSTING=ON
-	${MAKE} -C py/bitbox02
-
 # Directory for building for "host" machine according to gcc convention
 build: build/Makefile
 
@@ -54,20 +49,13 @@ build-build: build-build/Makefile
 # address santizers when they link code compiled with gcc.
 build-build-rust-unit-tests: build-build-rust-unit-tests/Makefile
 
-# Directory for building for "host" machine but with semihosting enbled
-build-semihosting: build-semihosting/Makefile
-
 firmware: | build
 # Generate python bindings for protobuf for test scripts
 	$(MAKE) -C build firmware.elf
-firmware-semihosting: | build-semihosting
-	$(MAKE) -C build-semihosting firmware.elf
 firmware-btc: | build
 	$(MAKE) -C build firmware-btc.elf
 bootloader: | build
 	$(MAKE) -C build bootloader.elf
-bootloader-semihosting: | build-semihosting
-	$(MAKE) -C build-semihosting bootloader-development.elf
 bootloader-development: | build
 	$(MAKE) -C build bootloader-development.elf
 bootloader-development-locked: | build
@@ -110,8 +98,6 @@ flash-dev-firmware:
 	./py/load_firmware.py build/bin/firmware.bin --debug
 jlink-flash-bootloader-development: | build
 	JLinkExe -if SWD -device ATSAMD51J20 -speed 4000 -autoconnect 1 -CommanderScript ./build/scripts/bootloader-development.jlink
-jlink-flash-bootloader-semihosting: | build-semihosting
-	JLinkExe -if SWD -device ATSAMD51J20 -speed 4000 -autoconnect 1 -CommanderScript ./build-semihosting/scripts/bootloader-development.jlink
 jlink-flash-bootloader-development-locked: | build
 	JLinkExe -if SWD -device ATSAMD51J20 -speed 4000 -autoconnect 1 -CommanderScript ./build/scripts/bootloader-development-locked.jlink
 jlink-flash-bootloader: | build
@@ -126,8 +112,6 @@ jlink-flash-firmware-btc: | build
 	JLinkExe -if SWD -device ATSAMD51J20 -speed 4000 -autoconnect 1 -CommanderScript ./build/scripts/firmware-btc.jlink
 jlink-flash-factory-setup: | build
 	JLinkExe -if SWD -device ATSAMD51J20 -speed 4000 -autoconnect 1 -CommanderScript ./build/scripts/factory-setup.jlink
-jlink-flash-firmware-semihosting: | build-semihosting
-	JLinkExe -if SWD -device ATSAMD51J20 -speed 4000 -autoconnect 1 -CommanderScript ./build-semihosting/scripts/firmware.jlink
 dockerinit:
 	./scripts/container.sh build --pull --force-rm --no-cache -t shiftcrypto/firmware_v2:$(shell cat .containerversion) .
 dockerpull:
@@ -144,4 +128,4 @@ prepare-tidy: | build build-build
 	make -C build rust-cbindgen
 	make -C build-build rust-cbindgen
 clean:
-	rm -rf build build-build build-semihosting build-build-rust-unit-tests
+	rm -rf build build-build build-build-rust-unit-tests
diff --git a/scripts/jlink-gdb-debug/.gdbinit b/scripts/jlink-gdb-debug/.gdbinit
deleted file mode 100644
index 5460f9bba..000000000
--- a/scripts/jlink-gdb-debug/.gdbinit
+++ /dev/null
@@ -1,8 +0,0 @@
-# Start a JLink gdb server with the following command:
-# $ JLinkGDBServer -if SWD -device ATSAMD51J20 -speed 4000 -ir
-# See I/O using telnet:
-# $ telnet localhost 2333
-file ../../build-semihosting/bin/firmware.elf
-target remote :2331
-monitor semihosting enable
-monitor reset
diff --git a/scripts/jlink-gdb-debug/README.md b/scripts/jlink-gdb-debug/README.md
deleted file mode 100644
index 3e012560d..000000000
--- a/scripts/jlink-gdb-debug/README.md
+++ /dev/null
@@ -1,71 +0,0 @@
-# Debugging with JLinkGDBServer
-
-If the firmware is compiled with semihosting support, the input and output is redirected to the
-developers computer. See instructions below.
-
-## Compile and flash firmware with semihosting support
-
-In the root directory of the project run:
-
-```
-make firmware-semihosting
-make jlink-flash-firmware-semihosting
-```
-
-
-## Configure GDB
-
-If you want to use the `.gdbinit` helper script you need to allow it by creating `~/.gdbinit` with
-the following content:
-
-```
-set auto-load safe-path /
-```
-
-## Run JLinkGDBServer
-
-Start the JLink GDB server with the following command:
-
-```
-JLinkGDBServer -if SWD -device ATSAMD51J20 -speed 4000 -ir
-```
-
-## Run GDB (with arm support)
-
-The GDB init file, `.gdbinit`, contains the following commands:
-
-```
-file ../../build/bin/firmware-semihosting.elf
-target remote :2331
-monitor semihosting enable
-monitor reset
-```
-
-First it will load the symbols from `firmware-semihosting.elf` then it will connect to the JLink GDB Server.
-After that it will enable "semihosting" to redirect IO to the JLink GDB Server. Finally it will reset the
-device.
-
-Change your current working directory to the directory with the `.gdbinit` file and run `gdb`.
-
-```
-cd <project-dir>/scripts/jlink-gdb-debug
-gdb-multiarch
-```
-
-## See input and output
-
-In a new terminal, run `telnet localhost 2333` to connect to the IO of the device through the GDB
-Server.
-
-```
-$ telnet localhost 2333
-Trying 127.0.0.1...
-Connected to localhost.
-Escape character is '^]'.
-SEGGER J-Link GDB Server V6.44h - Terminal output channel
-```
-
-
-## Start debugging
-
-To start debugging run the command `continue` in GDB.