Import embassy-mcxa repo

Merge remote-tracking branch 'james-e-mcxa/james/upstream' into james/upstream-mcxa

1 files changed, 93 insertions, 0 deletions

diff --git a/embassy-mcxa/run.sh b/embassy-mcxa/run.sh
new file mode 100644
index 000000000..418dc8a24
--- /dev/null
+++ b/embassy-mcxa/run.sh
@@ -0,0 +1,93 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ELF="${1:-}"
+if [[ -z "${ELF}" ]]; then
+  echo "Usage: $0 <elf_file>"
+  exit 1
+fi
+if [[ ! -f "${ELF}" ]]; then
+  echo "ELF not found: ${ELF}"
+  exit 1
+fi
+
+# Configurable via env
+CHIP="${CHIP:-MCXA276}"
+SPEED="${PROBE_SPEED:-1000}"   # kHz
+# Default to J-Link if PROBE not provided
+PROBE_OPT=(--probe "${PROBE:-1366:0101:000600110607}")
+PORT="${PROBE_RS_GDB_PORT:-1337}"
+
+cleanup() {
+  if [[ -n "${GDB_SERVER_PID:-}" ]]; then kill "${GDB_SERVER_PID}" 2>/dev/null || true; fi
+  [[ -n "${GDB_SCRIPT:-}" ]] && rm -f "${GDB_SCRIPT}" || true
+  [[ -n "${SERVER_LOG:-}" ]] && rm -f "${SERVER_LOG}" || true
+}
+trap cleanup EXIT
+
+if ! command -v probe-rs >/dev/null 2>&1; then
+  echo "probe-rs not found (cargo install probe-rs --features cli)"
+  exit 1
+fi
+if ! command -v gdb-multiarch >/dev/null 2>&1; then
+  echo "gdb-multiarch not found; install it (e.g., sudo apt install gdb-multiarch)."
+  exit 1
+fi
+
+# Start probe-rs GDB server and capture its output to a log (do not hide errors)
+SERVER_LOG=$(mktemp)
+set +e
+probe-rs gdb --chip "${CHIP}" --protocol swd --speed "${SPEED}" --non-interactive "${ELF}" "${PROBE_OPT[@]}" \
+  >"${SERVER_LOG}" 2>&1 &
+GDB_SERVER_PID=$!
+set -e
+
+# Wait for server readiness without touching the TCP port to avoid corrupting the GDB protocol
+ready=""
+for _ in {1..50}; do
+  if grep -q "Firing up GDB stub" "${SERVER_LOG}"; then ready=1; break; fi
+  if grep -q "Connecting to the chip was unsuccessful" "${SERVER_LOG}"; then
+    echo "probe-rs gdb server failed to connect to target. Log:" >&2
+    echo "----- probe-rs gdb log -----" >&2
+    sed -e 's/^/  /' "${SERVER_LOG}" >&2 || true
+    exit 1
+  fi
+  sleep 0.1
+done
+if [[ -z "${ready}" ]]; then
+  echo "probe-rs gdb server did not report readiness. Log:" >&2
+  echo "----- probe-rs gdb log -----" >&2
+  sed -e 's/^/  /' "${SERVER_LOG}" >&2 || true
+  exit 1
+fi
+
+# GDB script: load to RAM and run, no reset
+GDB_SCRIPT=$(mktemp)
+cat >"${GDB_SCRIPT}" <<EOF
+set pagination off
+set confirm off
+set mem inaccessible-by-default off
+
+# Connect and load without reset
+target remote :${PORT}
+monitor halt
+load
+# Set VTOR to point to our RAM vector table at 0x20000000
+# This ensures the CPU uses the correct initial SP and Reset vector
+set *0xE000ED08 = 0x20000000
+# Now read SP and PC from our vector table and set them
+set \$sp = *(unsigned int*)0x20000000
+set \$pc = *(unsigned int*)0x20000004
+# Run target (blocks here until you Ctrl+C, like before)
+continue
+EOF
+
+# Run gdb against the server
+if ! gdb-multiarch -q -batch -x "${GDB_SCRIPT}" "${ELF}"; then
+  echo "GDB failed to load/run. probe-rs gdb server log:" >&2
+  echo "----- probe-rs gdb log -----" >&2
+  sed -e 's/^/  /' "${SERVER_LOG}" >&2 || true
+  exit 1
+fi
+
+echo "Program loaded and started (no reset)"