2 files changed, 78 insertions, 0 deletions

diff --git a/include/applets.h b/include/applets.h
index 5fe01de5f..2a90b66c5 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -241,6 +241,9 @@
 #ifdef CONFIG_HALT
         APPLET(halt, halt_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
 #endif
+#ifdef CONFIG_HDPARM
+        APPLET(hdparm, hdparm_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
+#endif
 #ifdef CONFIG_HEAD
         APPLET(head, head_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
 #endif
diff --git a/include/usage.h b/include/usage.h
index d7de5e09e..6f8558800 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -805,6 +805,81 @@
 #define halt_full_usage \
         "Halt the system."
 
+#ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
+#define USAGE_HDPARM_IDENT(a) a
+#else
+#define USAGE_HDPARM_IDENT(a)
+#endif
+
+#ifdef CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF
+#define USAGE_SCAN_HWIF(a) a
+#else
+#define USAGE_SCAN_HWIF(a)
+#endif
+
+#ifdef CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF
+#define USAGE_UNREGISTER_HWIF(a) a
+#else
+#define USAGE_UNREGISTER_HWIF(a)
+#endif
+
+#ifdef CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET
+#define USAGE_DRIVE_RESET(a) a
+#else
+#define USAGE_DRIVE_RESET(a)
+#endif
+
+#ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
+#define USAGE_TRISTATE_HWIF(a) a
+#else
+#define USAGE_TRISTATE_HWIF(a)
+#endif
+
+#define hdparm_trivial_usage \
+        "[options] [device] .."
+#define hdparm_full_usage \
+        "Options:" \
+        " -a   get/set fs readahead\n" \
+        " -A   set drive read-lookahead flag (0/1)\n" \
+        " -b   get/set bus state (0 == off, 1 == on, 2 == tristate)\n" \
+        " -B   set Advanced Power Management setting (1-255)\n" \
+        " -c   get/set IDE 32-bit IO setting\n" \
+        " -C   check IDE power mode status\n" \
+        " -d   get/set using_dma flag\n" \
+        " -D   enable/disable drive defect-mgmt\n" \
+        " -f   flush buffer cache for device on exit\n" \
+        " -g   display drive geometry\n" \
+        " -h   display terse usage information\n" \
+        " -i   display drive identification\n" \
+        USAGE_HDPARM_IDENT(" -I   detailed/current information directly from drive\n") \
+        USAGE_HDPARM_IDENT(" -Istdin  similar to -I, but wants /proc/ide/" "*" "/hd?/identify as input\n") \
+        " -k   get/set keep_settings_over_reset flag (0/1)\n" \
+        " -K   set drive keep_features_over_reset flag (0/1)\n" \
+        " -L   set drive doorlock (0/1) (removable harddisks only)\n" \
+        " -m   get/set multiple sector count\n" \
+        " -n   get/set ignore-write-errors flag (0/1)\n" \
+        " -p   set PIO mode on IDE interface chipset (0,1,2,3,4,...)\n" \
+        " -P   set drive prefetch count\n" \
+        " -q   change next setting quietly\n" \
+        " -Q   get/set DMA tagged-queuing depth (if supported)\n" \
+        " -r   get/set readonly flag (DANGEROUS to set)\n" \
+        USAGE_SCAN_HWIF(" -R   register an IDE interface (DANGEROUS)\n") \
+        " -S   set standby (spindown) timeout\n" \
+        " -t   perform device read timings\n" \
+        " -T   perform cache read timings\n" \
+        " -u   get/set unmaskirq flag (0/1)\n" \
+        USAGE_UNREGISTER_HWIF(" -U   un-register an IDE interface (DANGEROUS)\n") \
+        " -v   defaults; same as -mcudkrag for IDE drives\n" \
+        " -V   display program version and exit immediately\n" \
+        USAGE_DRIVE_RESET(" -w   perform device reset (DANGEROUS)\n") \
+        " -W   set drive write-caching flag (0/1) (DANGEROUS)\n" \
+        USAGE_TRISTATE_HWIF(" -x   tristate device for hotswap (0/1) (DANGEROUS)\n") \
+        " -X   set IDE xfer mode (DANGEROUS)\n" \
+        " -y   put IDE drive in standby mode\n" \
+        " -Y   put IDE drive to sleep\n" \
+        " -Z   disable Seagate auto-powersaving mode\n" \
+        " -z   re-read partition table\n"
+
 #ifdef CONFIG_FEATURE_FANCY_HEAD
 #define USAGE_FANCY_HEAD(a) a
 #else