diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/core/usbh_core.c b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/core/usbh_core.c
index 674fe4639..1bff9fc37 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/core/usbh_core.c
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/core/usbh_core.c
@@ -149,7 +149,7 @@ struct usbh_hubport * usbh_root_hub_port ( struct usbh_hubport *hport ) {
     struct usbh_hubport *parent;
 
     /* Navigate up to root hub */
-    while (parent = hport->parent->parent) {
+    while ((parent = hport->parent->parent)) {
         hport = parent;
     }
     
diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h
index 03fea763c..5be052e2d 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h
@@ -24,6 +24,7 @@ Modification: Use usb_malloc, usb_free and usb_align functions
 
 #include <stddef.h>
 #include <stdint.h>
+#include <string.h>
 #include "usb_config.h"
 
 #define USB_MEM_ALIGNX __attribute__((aligned(CONFIG_USB_ALIGN_SIZE)))
diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/usb_hc_xhci.c b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/usb_hc_xhci.c
index a79daa672..88d74882e 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/usb_hc_xhci.c
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/usb_hc_xhci.c
@@ -598,11 +598,11 @@ int xhci_usb_hc_init(uint32_t id){
     memset(xhci, 0, sizeof(*xhci));
     xhci->bus = bus;
     bus->priv = xhci;
-    if (rc = xhci_probe(xhci, usb_hc_get_register_base(id)) != 0) {
+    if ((rc = xhci_probe(xhci, usb_hc_get_register_base(id)) != 0)) {
         goto err_open; 
     }
 
-    if (rc = xhci_open(xhci) != 0 ) {
+    if ((rc = xhci_open(xhci) != 0) ) {
         goto err_open;
     }
 
diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c
index 844fc8e63..527cdf2c1 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c
@@ -81,6 +81,7 @@ Modification: Modify xhci_probe functions in order to adopt to XiZi AIOT.
 #include "xhci_reg.h"
 #include "xhci.h"
 #include "usb_hc_xhci.h"
+#include "usyscall.h"
 
 
 /** @file
@@ -127,7 +128,9 @@ static inline size_t xhci_align ( size_t len ) {
 	size_t align;
 
 	/* Align to own length (rounded up to a power of two) */
-	align = ( 1 << fls ( len - 1 ) );
+//	align = ( 1 << fls ( len - 1 ) );
+//	align = ( 1 << fls ( len - 1 ) );
+	align = XHCI_MIN_ALIGN;
 
 	/* Round up to XHCI_MIN_ALIGN if needed */
 	if ( align < XHCI_MIN_ALIGN )
@@ -191,15 +194,15 @@ static void xhci_init ( struct xhci_host *xhci, void *regs ) {
 	/* Locate capability, operational, runtime, and doorbell registers */
 	xhci->cap = regs;
 
-	id = usb_hc_get_register_id(regs);
+	id = usb_hc_get_register_id((unsigned long)regs);
 
 	cap_vir_addr = usb_hc_get_register_vir_base(id);
 
-	if(!mmap(cap_vir_addr, regs, USB3_ADDR_OFFSET_UPPER_BOUND, true)){
+	if(!mmap(cap_vir_addr, (uintptr_t)regs, USB3_ADDR_OFFSET_UPPER_BOUND, true)){
 		return;
 	}
 
-	xhci->cap_addr = xhci->base_addr = cap_vir_addr;
+	xhci->cap_addr = xhci->base_addr = (void *)cap_vir_addr;
 
 //	caplength = readb ( xhci->cap + XHCI_CAP_CAPLENGTH );
 	caplength = readb ( xhci->cap_addr + XHCI_CAP_CAPLENGTH );
@@ -687,7 +690,7 @@ static int xhci_dcbaa_alloc ( struct xhci_host *xhci ) {
 	xhci->dcbaa.context = NULL;
 
 
-	rc = sys_mmap(&dcbaap_addr, &dcbaap_phy, len);
+	rc = naive_mmap(&dcbaap_addr, &dcbaap_phy, len, false);
 
 	if(rc != 0){
 		USB_LOG_ERR("XHCI %s could not allocate DCBAA\n", xhci->name );
@@ -2225,7 +2228,8 @@ int xhci_work_endpoint_open ( struct xhci_host *xhci, struct xhci_slot *slot, st
 	
 	/* Calculate interval */
 	if ( ctx_type & XHCI_EP_TYPE_PERIODIC ) {
-		ep->interval = ( fls ( ep->interval ) - 1 );
+//		ep->interval = ( fls ( ep->interval ) - 1 );
+		ep->interval = 256;
 	}
 
 	ep->ctx_type = ctx_type;
@@ -2643,6 +2647,7 @@ void xhci_event_process(struct xhci_host *xhci) {
 		/* Stop if we reach an empty TRB */
 //		DSB();
 //		__asm__ __volatile__("dsb sy": : : "memory");
+//		__asm__ volatile("dmb ish\n\t");
 		BARRIER();
 
         nidx = evts->nidx; /* index of dequeue trb */
diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.h b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.h
index 98cfb9b9f..d653a404d 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.h
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.h
@@ -36,6 +36,7 @@ Modification: replant and redefine some xhci data structure, so that the cherryU
 #ifndef XHCI_H_
 #define XHCI_H_
 
+#include <strings.h>
 #include "xhci_reg.h"
 #include "usbh_core.h"
 
diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/usb.mk b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/usb.mk
index 488c3bd49..ba38d3725 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/usb.mk
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/usb.mk
@@ -9,6 +9,13 @@ user_ldflags = --start-group,-lgcc,-lc,--end-group
 cflags = -std=c11 -march=armv7-a -mtune=cortex-a9 -nostdlib -nodefaultlibs -mfloat-abi=soft -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -ggdb -Wno-unused -Werror -fno-omit-frame-pointer -fno-stack-protector -fno-pie
 #cflags = -Wall -g -std=c11 
 endif
+ifeq ($(BOARD), ok1028a-c)
+toolchain ?= aarch64-none-elf-
+user_ldflags = -N -Ttext 0
+cflags = -Wall -g -std=c11 -mtune=cortex-a72 -nostdlib -nodefaultlibs -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -ggdb -Wno-unused -Werror -fno-omit-frame-pointer -fno-stack-protector -fno-pie  
+board_specs = $(KERNEL_ROOT)/services/app/stub.o
+endif
+
 cc = ${toolchain}gcc
 ld = ${toolchain}g++
 objdump = ${toolchain}objdump