devmem: new applet

diff --git a/include/applets.h b/include/applets.h
index e3f9294..d52f9f0 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -119,6 +119,7 @@
 USE_DEPMOD(APPLET(depmod, _BB_DIR_SBIN, _BB_SUID_NEVER))
 USE_MODPROBE_SMALL(APPLET_ODDNAME(depmod, modprobe, _BB_DIR_SBIN, _BB_SUID_NEVER, modprobe))
 USE_DEVFSD(APPLET(devfsd, _BB_DIR_SBIN, _BB_SUID_NEVER))
+USE_DEVMEM(APPLET(devmem, _BB_DIR_SBIN, _BB_SUID_NEVER))
 USE_DF(APPLET(df, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_APP_DHCPRELAY(APPLET(dhcprelay, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
 USE_DIFF(APPLET(diff, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
diff --git a/include/usage.h b/include/usage.h
index 3c11013..dbef9f6 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -690,6 +690,15 @@
 #define depmod_trivial_usage NOUSAGE_STR
 #define depmod_full_usage ""
 
+#define devmem_trivial_usage \
+	"ADDRESS [WIDTH [VALUE]]"
+
+#define devmem_full_usage "\n\n" \
+       "Read/write from physical address\n" \
+     "\n	ADDRESS	Address to act upon" \
+     "\n	WIDTH	Width (8/16/...)" \
+     "\n	VALUE	Data to be written" \
+
 #define devfsd_trivial_usage \
        "mntpnt [-v]" USE_DEVFSD_FG_NP("[-fg][-np]")
 #define devfsd_full_usage "\n\n" \