Adds additional Armv8-R AArch64 example programs, along with a single-core critical section implementation. The examples expand upon the existing Hello, World example and demonstrate the use of the Arm Generic Interrupt Controller and logging using defmt via the PL011 UART.

Author: jonathanpallant

Cargo.toml

@@ -21,3 +21,7 @@ exclude = [
 
 [dependencies]
 tock-registers = { version = "0.10.0", default-features = false } # Use it as interface-only library.
+critical-section = { version = "1.2.0", features = ["restore-state-u8"], optional = true }
+
+[features]
+critical-section-single-core = ["critical-section"]

examples/armv8-r/.cargo/config.toml

@@ -6,3 +6,6 @@ runner = "FVP_BaseR_AEMv8R -f fvp_cfg.txt"
 
 [unstable]
 build-std = ["core", "compiler_builtins"]
+
+[env]
+DEFMT_LOG = "info"

examples/armv8-r/.gitignore

@@ -1 +1,2 @@
 !/Cargo.lock
+/uart0.out

examples/armv8-r/Cargo.lock

@@ -5,8 +5,17 @@ name = "armv8-r"
 publish = false
 
 [dependencies]
-aarch64-rt = { version = "=0.4.0", default-features = false }
-aarch64-cpu.path = "../.."
+aarch64-rt = { version = "=0.4.0", default-features = false, features = [
+    "exceptions",
+] }
+# Use a git hash until a release is put out
+arm-fvp-base-pac = { git = "https://github.com/ArmFirmwareCrates/arm-fvp-base-pac/", rev = "9547f29c26cece16434d536b05ca50007e24c0aa", features = [
+    "base-r",
+] }
+arm-gic = "0.7.2"
+aarch64-cpu = { path = "../..", features = ["critical-section-single-core"] }
+critical-section = "1.2.0"
+defmt = "1.0.1"
 semihosting = { version = "0.1.24", default-features = false, features = [
     "panic-handler",
     "stdio",