diff --git a/Targets/Bonito2g690e/Bonito/i2c.S b/Targets/Bonito2g690e/Bonito/i2c.S
index 09a6b768..ee57a163 100644
--- a/Targets/Bonito2g690e/Bonito/i2c.S
+++ b/Targets/Bonito2g690e/Bonito/i2c.S
@@ -1,25 +1,27 @@
+#define	BONITO_HTIO_BASE_VA	0x90000cfdfc000000
+
 LEAF(i2cread)
 	addu a0,a0,1
         /* set device address */
         //li  v0, 0xbfd00000 + SMBUS_HOST_ADDRESS
-        li  v0, BONITO_PCIIO_BASE_VA + SMBUS_HOST_ADDRESS
+        dli  v0, BONITO_HTIO_BASE_VA + SMBUS_HOST_ADDRESS
 
         sb  a0, 0(v0);
 
         /* store register offset */
         //li  v0, 0xbfd00000 + SMBUS_HOST_COMMAND
-        li  v0, BONITO_PCIIO_BASE_VA + SMBUS_HOST_COMMAND
+        dli  v0, BONITO_HTIO_BASE_VA + SMBUS_HOST_COMMAND
         sb  a1, 0(v0);
 
         /* read byte data protocol */
         li  v0, 0x08
         //li  v1, 0xbfd00000 + SMBUS_HOST_CONTROL
-        li  v1, BONITO_PCIIO_BASE_VA + SMBUS_HOST_CONTROL
+        dli  v1, BONITO_HTIO_BASE_VA + SMBUS_HOST_CONTROL
         sb  v0, 0(v1);
 
         /* make sure SMB host ready to start, important!--zfx */
         //li  v1, 0xbfd00000 + SMBUS_HOST_STATUS
-        li  v1, BONITO_PCIIO_BASE_VA + SMBUS_HOST_STATUS
+        dli  v1, BONITO_HTIO_BASE_VA + SMBUS_HOST_STATUS
         lbu v0, 0(v1)
         andi v0,v0, 0x1f
         beqz  v0,1f
@@ -30,14 +32,14 @@ LEAF(i2cread)
 
         /* start */
         //li  v1, 0xbfd00000 + SMBUS_HOST_CONTROL
-        li  v1, BONITO_PCIIO_BASE_VA + SMBUS_HOST_CONTROL
+        dli  v1, BONITO_HTIO_BASE_VA + SMBUS_HOST_CONTROL
         lbu v0, 0(v1)
         ori v0, v0, 0x40
         sb  v0, 0(v1);
 
         /* wait */
         //li  v1, 0xbfd00000 + SMBUS_HOST_STATUS
-        li  v1, BONITO_PCIIO_BASE_VA + SMBUS_HOST_STATUS
+        dli  v1, BONITO_HTIO_BASE_VA + SMBUS_HOST_STATUS
 1:
 
 #if 0
@@ -54,7 +56,7 @@ LEAF(i2cread)
         nop
 
         //li  v1, 0xbfd00000 + SMBUS_HOST_STATUS
-        li  v1, BONITO_PCIIO_BASE_VA + SMBUS_HOST_STATUS
+        dli  v1, BONITO_HTIO_BASE_VA + SMBUS_HOST_STATUS
         lbu v0, 0(v1)
         andi v0,v0, 0x1f
         beqz  v0,1f
@@ -64,7 +66,7 @@ LEAF(i2cread)
 1:
 
         //li  v1, 0xbfd00000 + SMBUS_HOST_DATA0
-        li  v1, BONITO_PCIIO_BASE_VA + SMBUS_HOST_DATA0
+        dli  v1, BONITO_HTIO_BASE_VA + SMBUS_HOST_DATA0
         lbu  v0, 0(v1)
 
         jr      ra
diff --git a/Targets/Bonito2g690e/Bonito/loongson2g_ddr2_config.S b/Targets/Bonito2g690e/Bonito/loongson2g_ddr2_config.S
index 2ba0c811..529a4303 100644
--- a/Targets/Bonito2g690e/Bonito/loongson2g_ddr2_config.S
+++ b/Targets/Bonito2g690e/Bonito/loongson2g_ddr2_config.S
@@ -3,6 +3,38 @@
         and set up the memory space on L2 Xbar
 */
 
+	/* Set SMBus(I2C) base address */
+	#bus:device:func:reg = 0:14:0:90
+	dli	a1,0x90000cfdfe00a090
+	li	a0,SMBUS_IO_BASE_VALUE | 0x1
+	sw	a0,0(a1)
+	nop
+	/* Enable SMBus host controller */
+	#bus:device:func:reg = 0:14:0:d2
+	dli	a1,0x90000cfdfe00a0d2
+	li	a0,0x01
+	sb	a0,0(a1)
+	nop
+	/* Read SPD data */
+	li	a0,0xa0
+	li	a1,0x00
+	bal	i2cread
+	nop
+	beq	v0,0xff,1f	#No ddr2 device
+	nop
+	beq	v0,0x80,3f
+	nop
+1:
+	bal	beep_on
+	nop
+2:
+	nop
+	b	1b	#loop
+	nop
+3:
+	nop	#Continue
+	//i2ccfg
+
 #######################################################
 /* Undefine the two to enable both */
 #define MC0_ONLY
diff --git a/Targets/Bonito2g690e/Bonito/start.S b/Targets/Bonito2g690e/Bonito/start.S
index 194d9dda..a5efa52c 100644
--- a/Targets/Bonito2g690e/Bonito/start.S
+++ b/Targets/Bonito2g690e/Bonito/start.S
@@ -1007,6 +1007,22 @@ gs_2f_v3_ddr2_cfg:
 
 #include "loongson2g_fixup.S"
 
+##########################################
+/*
+ *__Start "bi..."
+ */
+	nop
+	bal	beep_on
+	nop
+	li	a0,5000
+1:
+	addiu	a0,-1	#delay
+	nop
+	bnez	a0,1b
+	nop
+	bal	beep_off
+	nop
+
 ##########################################
         TTYDBG("NODE 0 MEMORY CONFIG BEGIN\r\n")
         li      s1, 0x0
@@ -1799,6 +1815,26 @@ LEAF(tgt_putchar_COM1)
 	nop	
 END(tgt_putchar_COM1)
 
+/* Beep on/off function */
+LEAF(beep_on)
+	nop
+	dli	t1,0x90000cfdfe00a080
+	lbu	t0,0(t1)
+	or	t0,0x04
+	sb	t0,0(t1)
+	nop
+	jr	ra
+	nop
+END(beep_on)
+LEAF(beep_off)
+	nop
+	dli	t1,0x90000cfdfe00a080
+	lbu	t0,0(t1)
+	and	t0,0xfb
+	sb	t0,0(t1)
+	nop
+	jr	ra
+END(beep_off)
 
 #include "i2c.S"
 __main: