diff --git a/Targets/Bonito3a82w/pci/rs780.h b/Targets/Bonito3a82w/pci/rs780.h
index d8536c81..7b2f901f 100644
--- a/Targets/Bonito3a82w/pci/rs780.h
+++ b/Targets/Bonito3a82w/pci/rs780.h
@@ -27,7 +27,7 @@
 #define NBHTIU_INDEX 	0xA8
 #define NBMC_INDEX 		0xE8
 #define NBPCIE_INDEX  	0xE0
-#define EXT_CONF_BASE_ADDRESS 0x17000000
+#define EXT_CONF_BASE_ADDRESS 0x70000000
 #define	TEMP_MMIO_BASE_ADDRESS	0xC0000000
 
 typedef struct __PCIE_CFG__ {
diff --git a/Targets/Bonito3a82w/pci/rs780_cmn.c b/Targets/Bonito3a82w/pci/rs780_cmn.c
index 8b445930..91781f96 100644
--- a/Targets/Bonito3a82w/pci/rs780_cmn.c
+++ b/Targets/Bonito3a82w/pci/rs780_cmn.c
@@ -298,9 +298,8 @@ u16 pci_ext_read_config16(device_t nb_tag, device_t tag, u32 reg)
 	_pci_break_tag(tag, &bus, &dev, &func);
 	
 	/*get BAR3 base address for nbcfg0x1c */
-	addr = (_pci_conf_read(bar3_tag, 0x1c)  & ~(0x0f))| 0x80000000;
+	addr = (_pci_conf_read(bar3_tag, 0x1c)  & ~(0x0f))| 0xc0000000;
 	addr |= bus << 20 | dev << 15 | func << 12 | reg;
-    addr |= 0x0e000000;  //added by oldtai for the cpu win changed  maybe cause ide not passing 
 	//printf("ext ===========   addr=%x,bus=%x,dev=%x, fn=%x\n", addr, bus, dev, func);
 
 	return *((volatile u16 *) addr);
@@ -314,9 +313,8 @@ void pci_ext_write_config16(device_t nb_tag, device_t tag, u32 reg_pos, u32 mask
 	_pci_break_tag(tag, &bus, &dev, &func);
 	
 	/*get BAR3 base address for nbcfg0x1c */
-	addr = (_pci_conf_read(bar3_tag, 0x1c)  & ~(0x0f))| 0x80000000;
+	addr = (_pci_conf_read(bar3_tag, 0x1c)  & ~(0x0f))| 0xc0000000;
 	addr |= bus << 20 | dev << 15 | func << 12 | reg_pos;
-    addr |= 0x0e000000;  //added by oldtai for the cpu win changed
 	//printf("addr=%x,bus=%x,dev=%x, fn=%x\n", addr, bus, dev, func);
 	*((volatile u16 *) addr) = val;
 
diff --git a/Targets/Bonito3a82w/pci/rs780_pcie.c b/Targets/Bonito3a82w/pci/rs780_pcie.c
index ba429d3b..23a2f9ec 100644
--- a/Targets/Bonito3a82w/pci/rs780_pcie.c
+++ b/Targets/Bonito3a82w/pci/rs780_pcie.c
@@ -227,12 +227,21 @@ static void switching_gpp_configurations(device_t nb_dev, device_t sb_dev)
 *****************************************************************/
 void enable_pcie_bar3(device_t nb_dev)
 {
+/*
+43291_rs780_rpr_nda_1.05.pdf
+5.9.8
+Program PCIE Memory Mapped Configuration Space
+43734_rs780_bdg_nda_1.06.pdf
+2.3
+HTIU Indirect Register Space (HTIUIND)
+*/
 	set_nbcfg_enable_bits(nb_dev, 0x7C, 1 << 30, 1 << 30);	/* Enables writes to the BAR3 register. */
 	set_nbcfg_enable_bits(nb_dev, 0x84, 7 << 16, 0 << 16);
 
 	pci_write_config32(nb_dev, 0x1C, EXT_CONF_BASE_ADDRESS);	/* PCIEMiscInit */
 	pci_write_config32(nb_dev, 0x20, 0x00000000);
-	set_htiu_enable_bits(nb_dev, 0x32, 1 << 28, 1 << 28);	/* PCIEMiscInit */
+	//set_htiu_enable_bits(nb_dev, 0x32, 1 << 28, 1 << 28);	/* PCIEMiscInit */
+	htiu_write_indexN(nb_dev, 0x32, htiu_read_indexN(nb_dev, 0x32) | (1<<28));
 }
 
 /*****************************************************************
@@ -245,6 +254,8 @@ void disable_pcie_bar3(device_t nb_dev)
 	pci_write_config32(nb_dev, 0x1C, 0);	/* clear BAR3 address */
 	printk_info("Disable writes to the BAR3\n");
 	set_nbcfg_enable_bits(nb_dev, 0x7C, 1 << 30, 0 << 30);	/* Disable writes to the BAR3. */
+	//set_htiu_enable_bits(nb_dev, 0x32, 1 << 28, 0 << 28);	/* PCIEMiscInit */
+	htiu_write_indexN(nb_dev, 0x32, htiu_read_indexN(nb_dev, 0x32) & ~(1<<28));
 }
 
 /*****************************************