move to generic target and .cargo/config

Author: pftbest

.cargo/config

@@ -0,0 +1,11 @@
+[target.msp430]
+rustflags = [
+  "-C",
+  "linker=./msp-gcc.sh",
+  "-C",
+  "link-arg=-Lldscripts",
+  "-C",
+  "link-arg=-Tmsp430g2553.ld",
+  "-C",
+  "link-arg=-nostartfiles",
+]

Makefile

@@ -1,8 +1,7 @@
-DEVICE = msp430g2553
-TARGET = target/$(DEVICE)/release/msp
+TARGET = target/msp430/release/msp
 
 all:
-	xargo build --release --target $(DEVICE)
+	xargo build --release --target msp430
 	msp430-elf-objdump -Cd $(TARGET) > $(TARGET).lst
 	msp430-elf-size $(TARGET)
 

README.md

@@ -16,7 +16,7 @@ Steps:
 * Build the project: `$ make`
 * or you can build it using xargo directly (if you don't like `make`)
 
-  `$ xargo build --release --target msp430g2553`
+  `$ xargo build --release --target msp430`
 * Flash the firmware using mspdebug: `$ make prog`
 
 ## How it works
@@ -44,10 +44,9 @@ Steps:
 
 To run this code on the other boards and MCUs, you need to change it in few places:
 * Get a linker script for your MCU from msp430-elf-gcc include directory, and place it
-  inside `ldscripts` folder.
-* Rename `msp430g2553.json` and modify it to point to the right liker script from step 1
+  inside `ldscripts` folder. (Don't forget to get `*_symbols.ld` one as well).
+* Modify `.cargo/config` file so it would point to your ld script from step 1.
 * Modify `msp-gcc.sh` so it would pass the right mcu name to the gcc.
-* Modify `DEVICE` variable inside a Makefile.
 
 ## Board
 

msp430g2553.json renamed to msp430.json

@@ -2,7 +2,6 @@
   "arch": "msp430",
   "data-layout": "e-m:e-p:16:16-i32:16:32-a:16-n8:16",
   "executables": true,
-  "features": "-ext",
   "llvm-target": "msp430",
   "max-atomic-width": 0,
   "no-integrated-as": true,
@@ -11,10 +10,5 @@
   "relocation-model": "static",
   "target-endian": "little",
   "target-pointer-width": "16",
-  "linker": "./msp-gcc.sh",
-  "post-link-args": [
-    "-Lldscripts",
-    "-Tmsp430g2553.ld",
-    "-nostartfiles"
-  ]
+  "vendor": "unknown"
 }