diff --git a/bootloader/mpio_hd200_hd300.c b/bootloader/mpio_hd200_hd300.c
index 97e49d5..14f7635 100644
--- a/bootloader/mpio_hd200_hd300.c
+++ b/bootloader/mpio_hd200_hd300.c
@@ -492,6 +492,7 @@
                     /* init USB */
                     ide_power_enable(true);
                     sleep(HZ/20);
+                    ata_enable(false);
                     usb_enable(true);
                 }
                 
@@ -512,6 +513,7 @@
                 {
                     /* disable USB */
                     usb_enable(false);
+                    ata_enable(true);
                     sleep(HZ);
                     ide_power_enable(false);
                     sleep(HZ);
diff --git a/firmware/target/coldfire/mpio/ata-mpio.c b/firmware/target/coldfire/mpio/ata-mpio.c
index db03095..f993dd9 100644
--- a/firmware/target/coldfire/mpio/ata-mpio.c
+++ b/firmware/target/coldfire/mpio/ata-mpio.c
@@ -39,13 +39,22 @@
 
 void ata_enable(bool on)
 {
-    (void)on;
+    /* GPO36  /reset line of GL811E */
+    if (on)
+        and_l(~(1<<4), &GPIO1_OUT);
+    else
+        or_l((1<<4), &GPIO1_OUT);
+
+    or_l((1<<4), &GPIO1_ENABLE);
+    or_l((1<<4), &GPIO1_FUNCTION);
 }
 
-/* to be fixed */
 bool ata_is_coldstart(void)
 {
-    return true;
+    /* check if ATA reset line is configured
+     * as GPIO
+     */
+    return (GPIO_FUNCTION & (1<<19)) == 0;
 }
 
 void ata_device_init(void)
diff --git a/firmware/target/coldfire/mpio/usb-mpio.c b/firmware/target/coldfire/mpio/usb-mpio.c
index a8c3db8..9436517 100644
--- a/firmware/target/coldfire/mpio/usb-mpio.c
+++ b/firmware/target/coldfire/mpio/usb-mpio.c
@@ -30,9 +30,6 @@
     /* GPIO42 is USB detect input
      * but it also serves as MCLK2 for DAC
      */
-    and_l(~(1<<4), &GPIO1_OUT);           /* GPIO36 low */
-    or_l((1<<4), &GPIO1_ENABLE);          /* GPIO36 */
-    or_l((1<<4)|(1<<5), &GPIO1_FUNCTION); /* GPIO36 GPIO37 */
 
      /* GPIO22 GPIO30 high */
     or_l((1<<22)|(1<<30), &GPIO_OUT);
@@ -48,28 +45,16 @@
 
 void usb_enable(bool on)
 {
-    /* one second timeout */
-    unsigned char timeout = 10;
-   
     if(on)
     {
-        and_l(~(1<<30),&GPIO_OUT);  /* GPIO30 low */
-        and_l(~(1<<22),&GPIO_OUT);  /* GPIO22 low */
-
-        or_l((1<<4),&GPIO1_OUT);    /* GPIO36 high */
-
+        /* Turn on power for GL811E bridge */
+        and_l(~((1<<30)|(1<<22)),&GPIO_OUT);  /* GPIO30 low */
+                                              /* GPIO22 low */
     }
     else
     {
-        or_l((1<<22),&GPIO_OUT);  /* GPIO22 high */
-        or_l((1<<30),&GPIO_OUT);  /* GPIO30 high */
-
-        and_l(~(1<<4),&GPIO1_OUT); /* GPIO36 low */
-
-        while ( !(GPIO1_READ & (1<<5)) && timeout--)
-        {
-            sleep(HZ/10);
-        }
-        sleep(HZ);
+        /* Turn off power */
+        or_l((1<<30)|(1<<22),&GPIO_OUT);  /* GPIO22 high */
+                                          /* GPIO30 high */
     }
 }