diff --git a/Targets/Bonito2fdev/Bonito/mycmd.c b/Targets/Bonito2fdev/Bonito/mycmd.c
index eaccb6ad..511a6d95 100644
--- a/Targets/Bonito2fdev/Bonito/mycmd.c
+++ b/Targets/Bonito2fdev/Bonito/mycmd.c
@@ -117,38 +117,216 @@ syscall_addrtype=0;
 return 0;
 }
 
+#include "target/via686b.h"
 static int i2cslot=0;
-static int I2cRead(int type,long long addr,union commondata *mydata)
+
+static int DimmRead(int type,long long addr,union commondata *mydata)
+{
+char c;
+switch(type)
+{
+case 1:
+linux_outb((i2cslot<<1)+0xa1,SMBUS_HOST_ADDRESS);
+linux_outb(addr,SMBUS_HOST_COMMAND);
+linux_outb(0x8,SMBUS_HOST_CONTROL); 
+if((c=linux_inb(SMBUS_HOST_STATUS))&0x1f)
+{
+linux_outb(c,SMBUS_HOST_STATUS);
+}
+
+linux_outb(linux_inb(SMBUS_HOST_CONTROL)|0x40,SMBUS_HOST_CONTROL);
+
+while(linux_inb(SMBUS_HOST_STATUS)&SMBUS_HOST_STATUS_BUSY);
+
+if((c=linux_inb(SMBUS_HOST_STATUS))&0x1f)
+{
+linux_outb(c,SMBUS_HOST_STATUS);
+}
+
+mydata->data1=linux_inb(SMBUS_HOST_DATA0);
+break;
+
+default: return -1;break;
+}
+return 0;
+}
+
+static int DimmWrite(int type,long long addr,union commondata *mydata)
 {
+return -1;
+}
+
+
+static int Ics950220Read(int type,long long addr,union commondata *mydata)
+{
+char c;
 switch(type)
 {
-case 1:mydata->data1= i2cread((i2cslot<<1)+0xa1,addr); break;
+case 1:
+linux_outb(0xd3,SMBUS_HOST_ADDRESS); //0xd3
+linux_outb(addr,SMBUS_HOST_COMMAND);
+linux_outb(1,SMBUS_HOST_DATA0);
+linux_outb(0x14,SMBUS_HOST_CONTROL); //0x14
+if((c=linux_inb(SMBUS_HOST_STATUS))&0x1f)
+{
+linux_outb(c,SMBUS_HOST_STATUS);
+}
+
+linux_outb(linux_inb(SMBUS_HOST_CONTROL)|0x40,SMBUS_HOST_CONTROL);
+
+while(linux_inb(SMBUS_HOST_STATUS)&SMBUS_HOST_STATUS_BUSY);
+
+if((c=linux_inb(SMBUS_HOST_STATUS))&0x1f)
+{
+linux_outb(c,SMBUS_HOST_STATUS);
+}
+
+mydata->data1=linux_inb(SMBUS_HOST_DATA1+1);
+break;
+
 default: return -1;break;
 }
 return 0;
 }
 
-static int I2cWrite(int type,long long addr,union commondata *mydata)
+static int Ics950220Write(int type,long long addr,union commondata *mydata)
+{
+char c;
+switch(type)
+{
+case 1:
+linux_outb(0xd2,SMBUS_HOST_ADDRESS); //0xd3
+linux_outb(addr,SMBUS_HOST_COMMAND);
+linux_outb(1,SMBUS_HOST_DATA0);
+linux_outb(0x14,SMBUS_HOST_CONTROL); //0x14
+if((c=linux_inb(SMBUS_HOST_STATUS))&0x1f)
+{
+linux_outb(c,SMBUS_HOST_STATUS);
+}
+
+c=linux_inb(SMBUS_HOST_CONTROL);
+linux_outb(mydata->data1,SMBUS_HOST_DATA1+1);
+linux_outb(c|0x40,SMBUS_HOST_CONTROL);
+
+while(linux_inb(SMBUS_HOST_STATUS)&SMBUS_HOST_STATUS_BUSY);
+
+if((c=linux_inb(SMBUS_HOST_STATUS))&0x1f)
 {
+linux_outb(c,SMBUS_HOST_STATUS);
+}
+
+break;
+
+default: return -1;break;
+}
+return 0;
 return -1;
 }
 
+static int rom_ddr_reg_read(int type,long long addr,union commondata *mydata)
+{
+	    char *nvrambuf;
+		extern char ddr2_reg_data,_start;
+        nvrambuf = 0xbfc00000+((int)&ddr2_reg_data -(int)&_start)+addr;
+//		printf("ddr2_reg_data=%x\nbuf=%x,ddr=%x\n",&ddr2_reg_data,nvrambuf,addr);
+switch(type)
+{
+case 1:memcpy(&mydata->data1,nvrambuf,1);break;
+case 2:memcpy(&mydata->data2,nvrambuf,2);break;
+case 4:memcpy(&mydata->data4,nvrambuf,4);break;
+case 8:memcpy(&mydata->data8,nvrambuf,8);break;
+}
+return 0;
+}
+
+static int rom_ddr_reg_write(int type,long long addr,union commondata *mydata)
+{
+        char *nvrambuf;
+        char *nvramsecbuf;
+	    char *nvram;
+		int offs;
+		extern char ddr2_reg_data,_start;
+		struct fl_device *dev=fl_devident(0xbfc00000,0);
+		int nvram_size=dev->fl_secsize;
+
+        nvram = 0xbfc00000+((int)&ddr2_reg_data -(int)&_start);
+		offs=(int)nvram &(nvram_size - 1);
+        nvram  =(int)nvram & ~(nvram_size - 1);
+
+	/* Deal with an entire sector even if we only use part of it */
+
+        /* If NVRAM is found to be uninitialized, reinit it. */
+
+        /* Find end of evironment strings */
+	nvramsecbuf = (char *)malloc(nvram_size);
+
+	if(nvramsecbuf == 0) {
+		printf("Warning! Unable to malloc nvrambuffer!\n");
+		return(-1);
+	}
+
+        memcpy(nvramsecbuf, nvram, nvram_size);
+        if(fl_erase_device(nvram, nvram_size, FALSE)) {
+		printf("Error! Nvram erase failed!\n");
+		free(nvramsecbuf);
+                return(0);
+        }
+	    
+		nvrambuf = nvramsecbuf + offs;
+switch(type)
+{
+case 1:memcpy(nvrambuf+addr,&mydata->data1,1);break;
+case 2:memcpy(nvrambuf+addr,&mydata->data2,2);break;
+case 4:memcpy(nvrambuf+addr,&mydata->data4,4);break;
+case 8:memcpy(nvrambuf+addr,&mydata->data8,8);break;
+}
+        
+		if(fl_program_device(nvram, nvramsecbuf, nvram_size, FALSE)) {
+		printf("Error! Nvram program failed!\n");
+		free(nvramsecbuf);
+                return(0);
+        }
+	free(nvramsecbuf);
+        return 0;
+}
+
 static int i2cs(int argc,char **argv)
 {
-if(argc!=2)return -1;
+if(argc!=2) return -1;
+
 i2cslot=strtoul(argv[1],0,0);
-syscall1=(void*)I2cRead;
-syscall2=(void*)I2cWrite;
+
+switch(i2cslot)
+{
+case 0:
+case 1:
+ syscall1=(void*)DimmRead;
+ syscall2=(void*)DimmWrite;
+break;
+case 2:
+ syscall1=(void*)Ics950220Read;
+ syscall2=(void*)Ics950220Write;
+case 3:
+ syscall1=(void *)rom_ddr_reg_read;
+ syscall2=(void *)rom_ddr_reg_write;
+break;
+default:
+ return -1;
+break;
+}
+
 syscall_addrtype=0;
+
 return 0;
 }
 
+
 static const Cmd Cmds[] =
 {
 	{"MyCmds"},
 	{"pnps",	"", 0, "select pnp ops for d1,m1 ", pnps, 0, 99, CMD_REPEAT},
 	{"dumpsis",	"", 0, "dump sis registers", dumpsis, 0, 99, CMD_REPEAT},
-	{"i2cs","i2cs slotno", 0, "select i2c ops for d1", i2cs, 0, 99, CMD_REPEAT},
+	{"i2cs","slotno #slot 0-1 for dimm,slot 2 for ics95220,3 for ddrcfg", 0, "select i2c ops for d1,m1", i2cs, 0, 99, CMD_REPEAT},
 	{0, 0}
 };
 
diff --git a/Targets/Bonito2fdev/Bonito/start.S b/Targets/Bonito2fdev/Bonito/start.S
index c4ec49d4..ac4a4aaa 100644
--- a/Targets/Bonito2fdev/Bonito/start.S
+++ b/Targets/Bonito2fdev/Bonito/start.S
@@ -1746,8 +1746,9 @@ reg_write:
 
 
 
-	.rdata
+	.text
 	.align 5
+	.global ddr2_reg_data;
 ddr2_reg_data:
 //0000000_0 arefresh 0000000_1 ap 0000000_1 addr_cmp_en 0000000_1 active_aging
 DDR2_CTL_00_DATA_LO:	.word 0x00000101
@@ -1899,7 +1900,7 @@ DDR2_CTL_26_DATA_HI:	.word 0x00000000
 DDR2_CTL_27_DATA_LO:	.word 0x00000000
 DDR2_CTL_27_DATA_HI:	.word 0x00000000
 //0000000000000000000000000000000000000000000000000000000000000000
-DDR2_CTL_28_DATA_LO:	.word 0x00000001
+DDR2_CTL_28_DATA_LO:	.word 0x00000000
 DDR2_CTL_28_DATA_HI:	.word 0x00000000
 //0000000_1 rw_same_en 0000000_0 reg_dimm_enable 0000000_0 reduc 0000000_0 pwrup_srefresh_exit
 DDR2_CTL_start_DATA_LO: .word 0x01000000
diff --git a/Targets/Bonito2fdev/Bonito/tgt_machdep.c b/Targets/Bonito2fdev/Bonito/tgt_machdep.c
index 50965314..1af265a4 100644
--- a/Targets/Bonito2fdev/Bonito/tgt_machdep.c
+++ b/Targets/Bonito2fdev/Bonito/tgt_machdep.c
@@ -1126,6 +1126,7 @@ tgt_setenv(char *name, char *value)
 }
 
 
+
 /*
  *  Calculate checksum. If 'set' checksum is calculated and set.
  */