n810: Add the CAL BME PMM extractor script to preinit.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25381 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/omap24xx/base-files/lib/preinit/99_bme_pmm_image b/target/linux/omap24xx/base-files/lib/preinit/99_bme_pmm_image
new file mode 100644 (file)
index 0000000..8e29fd5
--- /dev/null
+++ b/target/linux/omap24xx/base-files/lib/preinit/99_bme_pmm_image
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+do_extract_cal_bme_pmm() {
+       [ -e /lib/firmware/n810-cal-bme-pmm.fw ] && return 0
+
+       [ -x /usr/bin/calvaria ] || { echo "CAL-BME extract: calvaria not found"; return 1; }
+
+       /usr/bin/calvaria -p -n bme -i last /dev/mtdblock1 >/lib/firmware/n810-cal-bme-pmm.fw || {
+               echo "CAL-BME extract: Failed to extract blob"
+               return 1
+       }
+}
+
+boot_hook_add preinit_mount_root do_extract_cal_bme_pmm