Merge pull request #24 from WyliodrinEmbeddedIoT/clue_nrf52840

Enable bootloader for Adafruit CLUE nRF52840

boards/clue_nrf52840-bootloader/Cargo.toml

@@ -0,0 +1,44 @@
+[package]
+name = "clue_nrf52840-bootloader"
+version = "0.1.0"
+authors = ["Tock Project Developers <[email protected]>"]
+build = "build.rs"
+edition = "2018"
+
+[dependencies]
+# cortexm4 = { git = "https://github.com/tock/tock", branch = "master" }
+# capsules = { git = "https://github.com/tock/tock", branch = "master" }
+# kernel = { git = "https://github.com/tock/tock", branch = "master" }
+# nrf52 = { git = "https://github.com/tock/tock", branch = "master" }
+# nrf52840 = { git = "https://github.com/tock/tock", branch = "master" }
+# components = { git = "https://github.com/tock/tock", branch = "master" }
+# nrf52_components = { git = "https://github.com/tock/tock", branch = "master" }
+
+# For Development
+cortexm4 = { path = "../../../tock/arch/cortex-m4" }
+capsules = { path = "../../../tock/capsules" }
+kernel = { path = "../../../tock/kernel" }
+nrf52 = { path = "../../../tock/chips/nrf52" }
+nrf52840 = { path = "../../../tock/chips/nrf52840" }
+components = { path = "../../../tock/boards/components" }
+nrf52_components = { path = "../../../tock/boards/nordic/nrf52_components" }
+
+bootloader = { path = "../../bootloader" }
+bootloader_nrf52 = { path = "../../chips/bootloader_nrf52" }
+bootloader_cortexm = { path = "../../arch/bootloader_cortexm" }
+
+
+[build-dependencies]
+bootloader_attributes = { path = "../../tools/bootloader_attributes" }
+
+[profile.dev]
+panic = "abort"
+lto = false
+opt-level = "z"
+debug = true
+
+[profile.release]
+panic = "abort"
+lto = true
+opt-level = "z"
+debug = true

boards/clue_nrf52840-bootloader/Makefile

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+# Makefile for building the Tock bootloader for nRF52 platforms using CDC-ACM
+# over USB.
+
+TOCK_ARCH=cortex-m4
+TARGET=thumbv7em-none-eabi
+PLATFORM=clue_nrf52840-bootloader
+
+include ../Common.mk
+
+TOCKLOADER=tockloader
+
+# Where in the flash to load the kernel with `tockloader`
+KERNEL_ADDRESS=0x26000
+
+ifdef PORT
+  TOCKLOADER_GENERAL_FLAGS += --port $(PORT)
+endif
+
+# Upload the kernel over JTAG
+.PHONY: flash
+flash: $(TOCK_ROOT_DIRECTORY)target/$(TARGET)/release/$(PLATFORM).bin
+	$(TOCKLOADER) $(TOCKLOADER_GENERAL_FLAGS) flash --address $(KERNEL_ADDRESS) --board nrf52dk --jlink $<
+
+# Upload the kernel over JTAG using OpenOCD
+.PHONY: flash-openocd
+flash-openocd: $(TOCK_ROOT_DIRECTORY)target/$(TARGET)/release/$(PLATFORM).bin
+	$(TOCKLOADER) $(TOCKLOADER_GENERAL_FLAGS) flash --address $(KERNEL_ADDRESS) --board nrf52dk --openocd $<

boards/clue_nrf52840-bootloader/README.md

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+Adafruit CLUE - nRF52840 Express with Bluetooth LE Tock Bootloader
+===================
+
+This is the implementation of the Tock bootloader for the Adafruit CLUE - nRF52840 Express with Bluetooth LE
+board. The bootloader runs using the CDC-ACM over USB stack.
+
+Compiling
+---------
+
+Here are the steps:
+
+```
+make
+cp ../../target/thumbv7em-none-eabi/release/clue_nrf52840-bootloader.bin ./clue_nrf52840-bootloader.bin
+```
+
+Converting to UF2
+-----------
+
+Install [uf2conf](https://github.com/microsoft/uf2/blob/master/utils/uf2conv.py)
+
+```
+uf2conv clue_nrf52840-bootloader.bin -f 0xADA52840 --base 0x26000 --output clue_nrf52840-bootloader.uf2
+```

boards/clue_nrf52840-bootloader/build.rs

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+extern crate bootloader_attributes;
+
+fn main() {
+    println!("cargo:rerun-if-changed=layout.ld");
+    println!("cargo:rerun-if-changed=../kernel_layout.ld");
+
+    let mut f = bootloader_attributes::get_file();
+    bootloader_attributes::write_flags(&mut f, "1.1.0", 0x36000);
+    bootloader_attributes::write_attribute(&mut f, "board", "clue_nrf52840");
+    bootloader_attributes::write_attribute(&mut f, "arch", "cortex-m4");
+    bootloader_attributes::write_attribute(&mut f, "appaddr", "0x80000");
+}

boards/clue_nrf52840-bootloader/layout.ld

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+MEMORY
+{
+  rom (rx)  : ORIGIN = 0x00026000, LENGTH = 64K
+  prog (rx) : ORIGIN = 0x00036000, LENGTH = 808K
+  ram (rwx) : ORIGIN = 0x20000000, LENGTH = 128K
+}
+
+MPU_MIN_ALIGN = 8K;
+PAGE_SIZE = 4K;
+
+INCLUDE ../kernel_layout.ld