Add support for fetching the stock kernel kexec modules

These are needed to package utagboot that will work on
the partition that it gets installed.

Author: tmlind

.gitignore

@@ -1 +1,2 @@
 output
+download

Makefile

@@ -4,6 +4,11 @@ rootwait ro init=/sbin/init
 cmdline=$(def_cmd) root=/dev/mmcblk1p23
 target=output/utagboot/
 
+kexec_modules_url=http://muru.com/linux/d4/
+kexec_modules_version=0.3
+kexec_modules=ddroid4-mainline-kexec-$(kexec_modules_version).tar.xz
+stock_kernel_modules=$(target)lib/modules/3.0.8-g448a95f/kernel/
+
 install: utags
 	fastboot flash utags utags.bin
 
@@ -15,5 +20,22 @@ utags: clean
 	scripts/utagboot.sh $(target)utags.bin "$(cmdline)"
 	hexdump -C $(target)utags.bin
 
+download_files:
+	mkdir -p download
+	if [ ! -f download/$(kexec_modules) ]; then \
+		curl $(kexec_modules_url)$(kexec_modules) \
+		-o download/$(kexec_modules); \
+		tar xf download/$(kexec_modules) -C download/; \
+	fi
+
+install_modules: download_files
+	mkdir -p $(stock_kernel_modules)
+	cp download/droid4-mainline-kexec-$(kexec_modules_version)/uart.ko \
+	$(stock_kernel_modules)
+	cp download/droid4-mainline-kexec-$(kexec_modules_version)/arm_kexec.ko \
+	$(stock_kernel_modules)
+	cp download/droid4-mainline-kexec-$(kexec_modules_version)/kexec.ko \
+	$(stock_kernel_modules)
+
 clean:
 	rm -f $(target)utags*.bin