xm530: autoload the SD card driver at boot

.github/scripts/check_target_modules.sh

@@ -25,13 +25,13 @@ fi
 
 fail=0
 
-# config-var → expected .ko filename
+# config-var → expected .ko path (relative to lib/modules/<version>/)
 # Add new pairs here when a kernel-module package is introduced.
 check_module() {
 	var="$1"
 	ko="$2"
 	grep -q "^${var}=y" "$CONFIG" || return 0
-	if find "$TARGET_DIR/lib/modules" -name "$ko" | grep -q .; then
+	if find "$TARGET_DIR/lib/modules" -path "*/$ko" | grep -q .; then
 		echo "OK: $ko present (${var}=y)"
 	else
 		echo "MISSING: ${var}=y but $ko not found under $TARGET_DIR/lib/modules/" >&2
@@ -40,6 +40,7 @@ check_module() {
 }
 
 check_module BR2_PACKAGE_WIREGUARD_LINUX_COMPAT wireguard.ko
+check_module BR2_PACKAGE_XIONGMAI_OSDRV_XM530 xiongmai/sdio0_sd.ko
 
 if [ "$fail" -ne 0 ]; then
 	echo "check_target_modules: regression detected" >&2

general/package/xiongmai-osdrv-xm530/post-build-hook.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+# xiongmai-osdrv-xm530 post-build hook.
+#
+# The vendor SD card driver (Arasan SDHC, module name sdio0_sd) ships in the
+# image but nothing ever loads it: it is not listed in /etc/modules, so
+# S35modules never modprobes it and /dev/mmcblk0 does not appear even with a
+# card in the slot. mdev's automount helper and majestic's record path expect
+# the card at /dev/mmcblk0p1.
+#
+# general/overlay/etc/modules is shared by every SoC, so the entry is appended
+# here, only for the images that select this package. The hook must run after
+# the rootfs overlay is applied, hence late-post-build-hooks.list rather than
+# the package's INSTALL_TARGET_CMDS.
+#
+# Hot-plug is out of scope: the driver loads with detect=0, so sdio0_powerup()
+# leaves GPIO49 (sdio0_detect) unmuxed and need_detect/need_poll are both 0.
+# A card present at boot enumerates; one inserted afterwards is not detected.
+# /etc/modules takes arguments, so "sdio0_sd detect=1" is available if that
+# should change.
+set -eu
+
+TARGET_DIR="${1:?target dir required}"
+
+MODULES="${TARGET_DIR}/etc/modules"
+if [ ! -f "${MODULES}" ]; then
+	echo "xiongmai-osdrv-xm530: ${MODULES} not found, cannot append sdio0_sd" >&2
+	exit 1
+fi
+
+if ! grep -qx "sdio0_sd" "${MODULES}"; then
+	printf 'sdio0_sd\n' >> "${MODULES}"
+fi

general/scripts/late-post-build-hooks.list

@@ -1,3 +1,4 @@
 # config-symbol:hook-script-relative-path
 BR2_PACKAGE_OPENIPC_NFS_ROOT:package/openipc-nfs-root/post-build-hook.sh
 BR2_PACKAGE_LIBNL:scripts/prune-libnl.sh
+BR2_PACKAGE_XIONGMAI_OSDRV_XM530:package/xiongmai-osdrv-xm530/post-build-hook.sh