Add the script to download the correct broadcom-wl driver

1 files changed, 64 insertions, 0 deletions

diff --git a/scripts/get-broadcom-wl.sh b/scripts/get-broadcom-wl.sh
new file mode 100755
index 0000000..ce76e68
--- /dev/null
+++ b/scripts/get-broadcom-wl.sh
@@ -0,0 +1,64 @@
+#!/bin/bash
+set -euo pipefail
+
+# Co-Authored-By: Claude.ai
+#
+# Downloads the broadcom-wl Arch package matching a given kernel version.
+# Needed for BCM4360 WiFi on Intel 2012 Macs (and similar) during archiso install.
+#
+# Usage: ./get-broadcom-wl.sh <kernel-version>
+# Example: ./get-broadcom-wl.sh 6.18.7-arch1-1
+
+if [[ $# -ne 1 ]]; then
+    echo "Usage: $0 <kernel-version>" >&2
+    echo "Example: $0 6.18.7-arch1-1" >&2
+    exit 1
+fi
+
+if ! command -v curl &>/dev/null; then
+    echo "Error: curl is required" >&2
+    exit 1
+fi
+
+KERNEL_VER="$1"
+# uname -r gives 6.18.7-arch1-1, Arch packages/commits use 6.18.7.arch1-1
+PKG_KERNEL_VER="${KERNEL_VER/-/.}"
+# Escape dots for use in regex
+PKG_KERNEL_REGEX="${PKG_KERNEL_VER//./\\.}"
+
+GITLAB_API="https://gitlab.archlinux.org/api/v4/projects/archlinux%2Fpackaging%2Fpackages%2Fbroadcom-wl/repository/commits"
+ARCHIVE_BASE="https://archive.archlinux.org/packages/b/broadcom-wl"
+
+echo "Searching for broadcom-wl matching kernel: $PKG_KERNEL_VER"
+
+page=1
+revision=""
+
+while [[ -z "$revision" && $page -le 30 ]]; do
+    response=$(curl -sf "${GITLAB_API}?per_page=100&page=${page}") || {
+        echo "Error: GitLab API request failed" >&2
+        exit 1
+    }
+
+    [[ "$response" == "[]" ]] && break
+
+    revision=$(echo "$response" \
+        | grep -o '"title":"6\.30\.223\.271-[0-9]*: linux '"${PKG_KERNEL_REGEX}"'"' \
+        | sed 's/.*-\([0-9]*\):.*/\1/' \
+        | head -1)
+
+    ((page++))
+done
+
+if [[ -z "$revision" ]]; then
+    echo "Error: no broadcom-wl package found for kernel $PKG_KERNEL_VER" >&2
+    exit 1
+fi
+
+PKG="broadcom-wl-6.30.223.271-${revision}-x86_64.pkg.tar.zst"
+URL="${ARCHIVE_BASE}/${PKG}"
+
+echo "Found: revision $revision"
+echo "Downloading: $URL"
+curl -L --progress-bar -O "$URL"
+echo "Done: $PKG"