build.sh: Copy vmlinux in images directory

To preserve vmlinux for dump usecases for corresponding images bins.

Signed-off-by: Anurag Pateriya <apateriy@qti.qualcomm.com>

Author: apateriy-qcom

build.sh

@@ -7,7 +7,7 @@
 #   ./build.sh [--dtb <your.dtb>] [--out <kernel_dir>] [--systemd <systemd_boot_dir>]
 #              [--ramdisk <ramdisk_path>] [--images <output_dir>] [--cmdline <cmdline>] [--no-debug] \
 #              [--metadata <metadata_dts>] [--its <fitimage_its>]
-#
+#              [--copy-vmlinux] [--vmlinux <path_to_vmlinux>]
 # Options:
 #   --dtb       Name of the DTB file to use
 #   --out       Path to kernel build artifacts directory (default: ../kobj)
@@ -18,6 +18,8 @@
 #   --no-debug  Skip adding debug.config to kernel build
 #   --metadata  Path to metadata DTS file (default: ../artifacts/qcom-dtb-metadata/qcom-metadata.dts)
 #   --its       Path to FIT image ITS file (default: ../artifacts/qcom-dtb-metadata/qcom-fitimage.its)
+#   --copy-vmlinux If set, copy vmlinux to the images output directory
+#   --vmlinux Path to a specific vmlinux to copy (defaults to <out>/vmlinux)
 #   --help      Show help message
 #
 # Description:
@@ -56,6 +58,8 @@ show_help() {
     echo "  --no-debug  Skip adding kernel/configs/debug.config"
     echo "  --metadata  Path to metadata DTS file (default: ../artifacts/qcom-dtb-metadata/qcom-metadata.dts)"
     echo "  --its       Path to FIT image ITS file (default: ../artifacts/qcom-dtb-metadata/qcom-fitimage.its)"
+    echo " --copy-vmlinux Copy vmlinux into the images output directory"
+    echo " --vmlinux Path to vmlinux to copy (default: <out>/vmlinux)"
     echo "  --help      Show this help message"
 }
 
@@ -67,12 +71,14 @@ RAMDISK="../artifacts/ramdisk.gz"
 IMAGES_OUTPUT="../images"
 KERNEL_CMDLINE="console=ttyMSM0,115200n8 earlycon qcom_geni_serial.con_enabled=1 qcom_scm.download_mode=1 reboot=panic_warm panic=-1 mitigations=auto"
 NO_DEBUG=false
+COPY_VMLINUX=false
+USER_VMLINUX=""
 FIT_METADATA_DTS="../artifacts/qcom-dtb-metadata/qcom-metadata.dts"
 FIT_IMAGE_ITS="../artifacts/qcom-dtb-metadata/qcom-fitimage.its"
 
 # Parse long options
 eval set -- "$(getopt -n "$0" -o "" \
-    --long dtb:,out:,systemd:,ramdisk:,images:,cmdline:,no-debug,metadata:,its:,help -- "$@")"
+    --long dtb:,out:,systemd:,ramdisk:,images:,cmdline:,no-debug,metadata:,its:,copy-vmlinux,vmlinux:,help -- "$@")"
 
 while [[ $# -gt 0 ]]; do
     case "$1" in
@@ -83,6 +89,8 @@ while [[ $# -gt 0 ]]; do
         --images) IMAGES_OUTPUT="$(realpath "$2")"; shift 2 ;;
         --cmdline) KERNEL_CMDLINE="$KERNEL_CMDLINE $2"; shift 2 ;;
         --no-debug) NO_DEBUG=true; shift ;;
+        --copy-vmlinux) COPY_VMLINUX=true; shift ;;
+        --vmlinux) USER_VMLINUX="$(realpath "$2")"; shift 2 ;;
         --metadata) FIT_METADATA_DTS="$(realpath "$2")"; shift 2 ;;
         --its) FIT_IMAGE_ITS="$(realpath "$2")"; shift 2 ;;
         --help) show_help; exit 0 ;;
@@ -206,5 +214,20 @@ fi
 
 echo "Build completed successfully. Images are in $IMAGES_OUTPUT."
 
-echo "Copy vmlinux corresponding to images into images folder."
-cp "$KERNEL_BUILD_ARTIFACTS/vmlinux" "$IMAGES_OUTPUT/vmlinux"
+# Optionally copy vmlinux into the images folder
+if [[ "$COPY_VMLINUX" == true ]]; then
+  VMLINUX_SRC="${USER_VMLINUX:-$KERNEL_BUILD_ARTIFACTS/vmlinux}"
+  if [[ ! -f "$VMLINUX_SRC" ]]; then
+    echo "[ERROR] --copy-vmlinux requested but vmlinux not found at: $VMLINUX_SRC"
+    exit 1
+  fi
+  VMLINUX_BASENAME="vmlinux"
+  # If user specified a custom vmlinux filename, preserve the basename
+  if [[ -n "$USER_VMLINUX" ]]; then
+    VMLINUX_BASENAME="$(basename "$USER_VMLINUX")"
+  fi
+  echo "Copying $VMLINUX_SRC -> $IMAGES_OUTPUT/$VMLINUX_BASENAME"
+  cp "$VMLINUX_SRC" "$IMAGES_OUTPUT/$VMLINUX_BASENAME"
+else
+  echo "Tip: pass --copy-vmlinux to copy vmlinux into $IMAGES_OUTPUT."
+fi