1 files changed, 100 insertions, 0 deletions

diff --git a/scripts/boot.sh b/scripts/boot.sh
new file mode 100755
index 0000000..1e3f739
--- /dev/null
+++ b/scripts/boot.sh
@@ -0,0 +1,100 @@
+#!/usr/bin/env bash
+#
+# scripts/boot.sh — quick direct boot in QEMU (dev loop)
+#
+# Fastest iteration: boots the kernel directly as BOOTX64.EFI via QEMU's
+# FAT driver, skipping the bootloader entirely.
+#
+# Usage:
+#   ./scripts/boot.sh [--gui] [--debug] [--release] [--mem 512M] [--smp 2]
+#
+# Boot chain:  firmware → rsnix (direct)
+# Full chain:  use ./scripts/boot-image.sh (firmware → rsboot → rsnix)
+#
+# Keybindings:
+#   Ctrl-A X   — quit
+#   Ctrl-A C   — QEMU monitor
+#
+# Environment:
+#   OVMF    path to OVMF firmware (default: /usr/share/edk2/x64/OVMF.4m.fd)
+#   MEM     memory size (default: 256M)
+#   SMP     CPU count (default: 1)
+#
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
+
+cd "$PROJECT_DIR"
+
+ESP_DIR="$PROJECT_DIR/esp"
+
+# ---- config ----
+OVMF="${OVMF:-/usr/share/edk2/x64/OVMF.4m.fd}"
+MEM="${MEM:-256M}"
+SMP="${SMP:-1}"
+PROFILE="debug"
+CARGO_FLAGS=""
+GUI=""
+DEBUG=""
+
+# ---- args ----
+while [ $# -gt 0 ]; do
+        case "$1" in
+        --gui | -g) GUI="-vga std" ;;
+        --debug | -d) DEBUG="-s -S" ;;
+        --release | -r)
+                PROFILE="release"
+                CARGO_FLAGS="--release"
+                ;;
+        --mem)
+                shift
+                MEM="$1"
+                ;;
+        --smp)
+                shift
+                SMP="$1"
+                ;;
+        --help | -h)
+                head -20 "$0" | grep "^#" | sed 's/^# //'
+                exit 0
+                ;;
+        *)
+                echo "unknown: $1"
+                exit 1
+                ;;
+        esac
+        shift
+done
+
+OUT_DIR="target/x86_64-unknown-uefi/$PROFILE"
+KERNEL="$OUT_DIR/rsdos.efi"
+
+# ---- build ----
+echo "=== Building kernel ($PROFILE) ==="
+cargo build --package rsdos --target x86_64-unknown-uefi $CARGO_FLAGS
+
+# ---- deploy ----
+mkdir -p "$ESP_DIR/EFI/BOOT"
+cp "$KERNEL" "$ESP_DIR/EFI/BOOT/BOOTX64.EFI"
+echo "  kernel: $(ls -lh "$KERNEL" | awk '{print $5}')"
+
+# ---- boot ----
+echo ""
+echo "=== Booting (direct: firmware → rsnix) ==="
+echo "  ovmf:  $OVMF"
+echo "  mem:   $MEM   smp: $SMP"
+echo "  gui:   $([ -n "$GUI" ] && echo yes || echo no)"
+echo "  gdb:   $([ -n "$DEBUG" ] && echo ':1234' || echo off)"
+echo ""
+
+exec qemu-system-x86_64 \
+        -bios "$OVMF" \
+        -drive file=fat:rw:"$ESP_DIR",format=raw \
+        -serial stdio \
+        -m "$MEM" \
+        -machine q35 \
+        -cpu qemu64 \
+        -no-reboot \
+        -smp "$SMP" \
+        $GUI $DEBUG