X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Farm.git;a=blobdiff_plain;f=betty%2Flpcload.c;h=38d53864c778ab7922392c2327c326955bc3cec6;hp=bdb39482c205ae97db92a3a89c7b7f6b760e0e12;hb=945d83a31473b984473f571bb92486991d14aa16;hpb=a2e8f16f2d595f007ebf1bfe041927702e161c9c

diff --git a/betty/lpcload.c b/betty/lpcload.c
index bdb3948..38d5386 100644
--- a/betty/lpcload.c
+++ b/betty/lpcload.c
@@ -1,8 +1,10 @@
 /*
  * lpcload.c - load firmware into ram of lpc2220 via uart0
  *
- * author: hackbard@hackdaworld.org
+ * author: hackbard@hackdaworld.org, rolf.anders@physik.uni-augsburg.de
  *
+ * build: make
+ * usage: sudo ./lpcload -d /dev/ttyS0 -f firmware.hex -D0 fw0.bin [-v]
  */
 
 #include <stdio.h>
@@ -14,236 +16,911 @@
 #include <fcntl.h>
 #include <termios.h>
 
-#define VERBOSE		(1<<0)
-#define FIRMWARE	(1<<1)
-
-#define CRYSTFREQ	"10000"
-
-#define BUFSIZE		64
+#define VERBOSE			(1<<0)
+#define FIRMWARE		(1<<1)
+#define BANK0			(1<<2)
+#define BANK2			(1<<3)
+#define BL			(1<<4)
+#define FLASHFW			(1<<5)
+#define BINARY			(1<<6)
+
+#define BANK0_ADDR		0x80000000
+#define BANK2_ADDR		0x82000000
+#define BANK_SIZE		0x00100000
+#define BL_ADDR			0x7fffe000
+#define BL_SIZE			0x00002000
+
+#define CMD_READ		'R'		// stay compatible to fwflash!
+#define CMD_WRITE		'W'
+#define CMD_CHIP_ERASE		'E'
+
+#define TXRX_TYPE_SYNC		0x00
+#define TXRX_TYPE_CKSM		0x00
+#define TXRX_TYPE_BAUD		0x01
+#define TXRX_TYPE_CMD		0x02
+#define TXRX_TYPE_DATA		0x03
+#define TXRX_TYPE_GO		0x04
+
+#define CMD_SUCCESS		"0\r\n"
+#define INVALID_COMMAND		"1\r\n"
+#define SRC_ADDR_ERROR		"2\r\n"
+#define DST_ADDR_ERROR		"3\r\n"
+#define SRC_ADDR_NOT_MAPPED	"4\r\n"
+#define DST_ADDR_NOT_MAPPED	"5\r\n"
+#define COUNT_ERROR		"6\r\n"
+#define COMPARE_ERROR		"10\r\n"
+#define BUSY			"11\r\n"
+#define PARAM_ERROR		"12\r\n"
+#define ADDR_ERROR		"13\r\n"
+#define ADDR_NOT_MAPPED		"14\r\n"
+#define CMD_LOCKED		"15\r\n"
+#define INVALID_CODE		"16\r\n"
+#define INVALID_BAUD_RATE	"17\r\n"
+#define INVALID_STOP_BIT	"18\r\n"
+
+#define RAM			0x01
+#define FLASH			0x02
+
+#define CRYSTFREQ		"10000"
+#define RAMOFFSET		0x40000200
+
+#define BUFSIZE			128
+
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned int u32;
+
+typedef struct s_lpc {
+	int sfd;		/* serial fd */
+	char sdev[128];		/* seriel device */
+	int fwfd;		/* fimrware fd */
+	char fwfile[128];	/* firmware file */
+	u32 info;		/* info/mode */
+	char freq[8];		/* frequency */
+	char bank0[127];	/* flash dump bank0 */
+	int b0fd;		/* dumpfile fd bank0 */
+	char bank2[127];	/* flash dump bank2 */
+	int b2fd;		/* dumpfile fd bank0 */
+	char bl[127];		/* flash dump bootloader */
+	int blfd;		/* dumpfile fd bootloader */
+	char ffwfile[127];	/* file with firmware to be flashed */
+	int ffwfd;		/* fd of the above */
+	u32 roff;		/* ram offset of uc */
+	u32 jaddr;		/* addr for the jump */
+} t_lpc;
 
 void usage(void) {
 
 	printf("possible argv:\n");
-	printf("  -d <serial device>\n");
-	printf("  -f <firmware>\n");
-	printf("  -c <crystal freq>\n");
+	printf("  -d  <serial device>\n");
+	printf("  -f  <firmware>\n");
+	printf("  -c  <crystal freq>\n");
+	printf("  -Dx <filename>\n");
+	printf("      x=0: bank0, x=2: bank2, x=b: bootloader\n");
+	printf("  -w <firmware which goes to flash>\n");
+	printf("  -b (if firmware for flash is a binary)\n");
 	printf("  -v\n");
 
 }
 
-int txrx(int fd,char *buf,int *len,unsigned char v) {
+int open_serial_device(t_lpc *lpc) {
+
+	struct termios term;
+
+	//memset(&term,0,sizeof(struct termios));
+
+	/* open serial device */
+
+	lpc->sfd=open(lpc->sdev,O_RDWR);
+	if(lpc->sfd<0) {
+		perror("tts open");
+		return lpc->sfd;
+	}
+
+	/* configure the serial device */
+
+	tcgetattr(lpc->sfd,&term);
+
+	// input/output baudrate
+
+	cfsetispeed(&term,B38400);
+	cfsetospeed(&term,B38400);
+
+	// control options -> 8n1
+
+	term.c_cflag&=~PARENB;	// no parity
+	term.c_cflag&=~CSTOPB;	// only 1 stop bit
+	term.c_cflag&=~CSIZE;	// no bit mask for data bits
+	term.c_cflag|=CS8;	// 8 data bits
+
+	// line options -> raw input
+	
+	term.c_lflag&=~(ICANON|ECHO|ECHOE|ISIG);
+
+	// input options -> enable flow control
+	
+	term.c_iflag&=~(INLCR|ICRNL|IXANY);
+	term.c_iflag|=(IXON|IXOFF);
+	
+	// output options
+
+	term.c_oflag=0;
+
+	// more control options -> timeout / flow control
+	
+	term.c_cc[VMIN]=0;
+	term.c_cc[VTIME]=20;	// 2 seconds timeout
+	//term.c_cc[VSTART]=0x11;
+	//term.c_cc[VSTOP]=0x13;
+
+	tcsetattr(lpc->sfd,TCSANOW,&term);
+
+	return lpc->sfd;
+}
+
+int reconfig_serial_device(t_lpc *lpc) {
+
+	struct termios term;
+	int ret;
+
+	/* reconfigure the serial device for our lousy loader tool */
+
+	tcgetattr(lpc->sfd,&term);
+
+	// disable flow control
+	
+	term.c_iflag&=~(IXON|IXOFF|IXANY|INLCR|ICRNL);
+
+	// change baudrate
+
+	cfsetispeed(&term,B115200);
+	cfsetospeed(&term,B115200);
+
+	// timeouts
+	
+	term.c_cc[VMIN]=0;
+	term.c_cc[VTIME]=100;	// 10 seconds timeout
+
+	ret=tcsetattr(lpc->sfd,TCSANOW,&term);
+
+	return ret;
+}
+
+int open_firmware(t_lpc *lpc) {
+
+	/* open firmware file */
+
+	lpc->fwfd=open(lpc->fwfile,O_RDONLY);
+
+	if(lpc->fwfd<0) {
+		perror("fw open");
+		return lpc->fwfd;
+	}
+
+	if(lpc->info&FLASHFW) {
+		lpc->ffwfd=open(lpc->ffwfile,O_RDONLY);
+		if(lpc->ffwfd<0) {
+			perror("ffw open");
+			return lpc->ffwfd;
+		}
+	}
+
+	return lpc->fwfd;
+}
+
+int open_dumpfiles(t_lpc *lpc) {
+
+	/* open dumpfiles */
+
+	if(lpc->info&BANK0) {
+		lpc->b0fd=open(lpc->bank0,O_WRONLY|O_CREAT);
+		if(lpc->b0fd<0) {
+			perror("bank0 dump file open");
+			return lpc->b0fd;
+		}
+	}
+
+	if(lpc->info&BANK2) {
+		lpc->b2fd=open(lpc->bank2,O_WRONLY|O_CREAT);
+		if(lpc->b2fd<0) {
+			perror("bank2 dump file open");
+			return lpc->b2fd;
+		}
+	}
+
+	if(lpc->info&BL) {
+		lpc->blfd=open(lpc->bl,O_WRONLY|O_CREAT);
+		if(lpc->blfd<0) {
+			perror("bootloader dump file open");
+			return lpc->blfd;
+		}
+	}
+
+	return 0;
+
+}
+int txrx(t_lpc *lpc,char *buf,int len,u8 type) {
 
 	int ret,cnt;
 	int i;
 
 	/* write */
 
-	if(v&VERBOSE)
+	if(lpc->info&VERBOSE)
 		printf("  >> ");
 	cnt=0;
-	while(*len) {
-		ret=write(fd,buf+cnt,*len);
+	while(len) {
+		ret=write(lpc->sfd,buf+cnt,len);
 		if(ret<0) {
 			perror("txrx write");
 			return ret;
 		}
-		if(v&VERBOSE)
+		if(lpc->info&VERBOSE)
 			for(i=0;i<ret;i++)
 				printf("%c",
 				       ((buf[cnt+i]>0x19)&(buf[cnt+i]<0x7f))?
 				       buf[cnt+i]:'.');
-		*len-=ret;
+		len-=ret;
 		cnt+=ret;
 	}
-	if(v&VERBOSE)
-		printf(" (%d)\n",cnt);
+	if(lpc->info&VERBOSE) {
+		printf(" | ");
+		for(i=0;i<cnt;i++)
+			printf("%02x ",buf[i]);
+		printf("| (%d)\n",cnt);
+	}
+
+
+
+	/* cut the echo if not of type auto baud */
+
+	if(type!=TXRX_TYPE_BAUD) {
+		while(cnt) {
+			ret=read(lpc->sfd,buf,cnt);
+			if(ret<0) {
+				perror("txrx echo cut");
+				return ret;
+			}
+			cnt-=ret;
+		}
+	}
+
+	/* return if type is go */
+
+	if(type==TXRX_TYPE_GO)
+		return cnt;
+
+	/* return here if type is data */
 
-	/* cut the echo */
-	// add more checking here!
-	while(cnt)
-		cnt-=read(fd,buf,cnt);
+	if(type==TXRX_TYPE_DATA)
+		return cnt;
 
 	/* read */
 
-	if(v&VERBOSE)
-		printf("  << ");
+	ret=read(lpc->sfd,buf,1);
+	if(ret<0) {
+		perror("txrx read (first byte)");
+		return ret;
+	}
+		
+	switch(buf[0]) {
+		case 'S':
+			cnt=13;
+			break;
+		case 'O':
+			cnt=3;
+			break;
+		case 'R':
+			cnt=7;
+			break;
+		case '0':
+			cnt=2;
+			break;
+		default:
+			printf("txrx read: bad return byte '%02x'\n",buf[0]);
+			break;
+	}
+
 	ret=1;
-	cnt=0;
-	while(ret>0) {
-		ret=read(fd,buf+cnt,BUFSIZE-cnt);
+	i=cnt;
+	while(i) {
+		ret=read(lpc->sfd,buf+1+cnt-i,i);
 		if(ret<0) {
-			perror("txrx read");
+			perror("txrx read (next bytes)");
 			return ret;
 		}
-		if(ret+cnt>BUFSIZE) {
-			printf("txrx read: too small buf size (%d)!\n",BUFSIZE);
+		i-=ret;
+	}
+	if(lpc->info&VERBOSE) {
+		printf("  << ");
+		for(i=0;i<cnt+1;i++)
+			printf("%c",((buf[i]>0x19)&(buf[i]<0x7f))?
+			            buf[i]:'.');
+		printf(" | ");
+		for(i=0;i<cnt+1;i++)
+			printf("%02x ",buf[i]);
+		printf("| (%d)\n",cnt+1);
+	}
+	buf[cnt+1]='\0';
+
+	/* check/strip return code if type is cmd */
+
+	if(type==TXRX_TYPE_CMD) {
+		ret=strlen(CMD_SUCCESS);
+		if(!strncmp(buf,CMD_SUCCESS,ret)) {
+			for(i=ret;i<cnt;i++)
+				buf[i-ret]=buf[i];
+			buf[cnt]='\0';
+		}
+		else {
+			printf("txrx bad return code!\n");
 			return -1;
 		}
-		if(v&VERBOSE)
-			for(i=0;i<ret;i++)
-				printf("%c",
-				       ((buf[cnt+i]>0x19)&(buf[cnt+i]<0x7f))?
-				       buf[cnt+i]:'.');
-		cnt+=ret;
 	}
-	if(v&VERBOSE)
-		printf(" (%d)\n",cnt);
-	*len=cnt;
 
 	return cnt;
 }
 
-int main(int argc,char **argv) {
+int bl_init(t_lpc *lpc) {
 
-	int i;
-	char tts[128];
-	int tts_fd;
-	char fw[128];
-	int fw_fd;
-	unsigned char info;
-	struct termios term;
-	char cfreq[8];
+	char buf[BUFSIZE];
 	int len;
+
+	/* auto baud sequence */
+	buf[0]='?';
+	txrx(lpc,buf,1,TXRX_TYPE_BAUD);
+	if(strncmp(buf,"Synchronized\r\n",14)) {
+		printf("auto baud detection failed\n");
+		return -1;
+	}
+
+	/* tell bl that we are synchronized (it's allready in buf) */
+	txrx(lpc,buf,14,TXRX_TYPE_SYNC);
+	if(strncmp(buf,"OK\r\n",4)) {
+		printf("sync failed\n");
+		return -1;
+	}
+
+	/* tell bl the crystal frequency */
+	len=strlen(lpc->freq)+2;
+	strncpy(buf,lpc->freq,BUFSIZE);
+	buf[len-2]='\r';
+	buf[len-1]='\n';
+	txrx(lpc,buf,len,TXRX_TYPE_SYNC);
+	if(strncmp(buf,"OK\r\n",4)) {
+		printf("freq set failed\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+int unlock_go(t_lpc *lpc) {
+
 	char buf[BUFSIZE];
+	int ret;
 
-	/*
-	 * initial ... 
-	 */
+	memcpy(buf,"U 23130\r\n",9);
+	ret=txrx(lpc,buf,9,TXRX_TYPE_CMD);
 
-	info=0;
-	memset(&term,0,sizeof(struct termios));
-	strncpy(cfreq,CRYSTFREQ,7);
+	return ret;
+}
 
-	/* parse argv */
+int go(t_lpc *lpc) {
 
-	for(i=1;i<argc;i++) {
+	char buf[BUFSIZE];
+	int ret,len;
 
-		if(argv[i][0]!='-') {
-			usage();
+	snprintf(buf,BUFSIZE,"G %d A\r\n",lpc->jaddr);
+	len=strlen(buf);
+	ret=txrx(lpc,buf,len,TXRX_TYPE_GO);
+
+	return ret;
+}
+
+int uuencode(u8 *in,u8 *out,int len) {
+
+	out[0]=0x20+len;
+	out[1]=0x20+((in[0]>>2)&0x3f);
+	out[2]=0x20+(((in[0]<<4)|(in[1]>>4))&0x3f);
+	out[3]=0x20+(((in[1]<<2)|(in[2]>>6))&0x3f);
+	out[4]=0x20+(in[2]&0x3f);
+
+	return 0;
+}
+
+int write_to_ram(t_lpc *lpc,char *buf,u32 addr,int len) {
+
+	int lcount;
+	u32 checksum;
+	char txrxbuf[BUFSIZE];
+	int count,bcnt;
+	int nlen,slen;
+	int i;
+
+	/* check length */
+	if(len%4) {
+		printf("ram write: not a multiple of 4\n");
+		return -1;
+	}
+
+	/* make it a multiple of 3 (reason: uuencode) */
+	nlen=(!(len%3))?len:((len/3+1)*3);
+	if(nlen>BUFSIZE) {
+		printf("ram write: too much data\n");
+		return -1;
+	}
+	for(i=len;i<nlen;i++) buf[i]=0;
+
+	/* prepare addr */
+	addr+=lpc->roff;
+
+	/* prepare write command */
+	if(lpc->info&VERBOSE)
+		printf("writing 0x%02x bytes to 0x%08x\n",len,addr);
+	snprintf(txrxbuf,BUFSIZE,"W %d %d\r\n",addr,len);
+	slen=strlen(txrxbuf);
+
+	/* send command and check return code */
+	txrx(lpc,txrxbuf,slen,TXRX_TYPE_CMD);
+
+	/* send data */
+	lcount=0;
+	bcnt=0;
+	count=0;
+	checksum=0;
+	while(bcnt<nlen) {
+
+		/* uuencode / prepare data bytes */
+		uuencode((u8 *)(buf+bcnt),(u8 *)(txrxbuf),
+		         (bcnt==nlen-3)?(len%3?len%3:3):3);
+		txrxbuf[5]='\r';
+		txrxbuf[6]='\n';
+
+		/* checksum */
+		checksum+=((u8)buf[bcnt]+(u8)buf[bcnt+1]+(u8)buf[bcnt+2]);
+
+		/* send a data line */
+		txrx(lpc,txrxbuf,7,TXRX_TYPE_DATA);
+
+		/* increase counters */
+		lcount+=1;
+		bcnt+=3;
+		count+=3;
+
+		/* checksum */
+		if((!(lcount%20))|(bcnt==nlen)) {
+			/* send backtick */
+			memcpy(txrxbuf,"`\r\n",3);
+			//txrx(lpc,txrxbuf,3,TXRX_TYPE_DATA);
+			/* send checksum */
+			snprintf(txrxbuf,BUFSIZE,"%d\r\n",checksum);
+			slen=strlen(txrxbuf);
+			txrx(lpc,txrxbuf,slen,TXRX_TYPE_CKSM);
+			if(!strncmp(txrxbuf,"RESE",4)) {
+				read(lpc->sfd,txrxbuf+4,4);
+				printf("ram write: resending ...\n");
+				bcnt-=count;
+			}
+			if(strncmp(txrxbuf,"OK\r\n",4)) {
+				printf("ram write: bad response\n");
+				return -1;
+			}
+			/* reset checksum & counter */
+			checksum=0;
+			count=0;
+		}
+
+	}
+
+	return 0;
+}
+
+int send_cmd(int sfd,u32 addr,u32 len,u8 cmd) {
+
+	int ret,i,cnt,size;
+	int as,ls;
+	u8 send[9];
+
+	switch(cmd) {
+		case CMD_READ:
+		case CMD_WRITE:
+			as=4;
+			ls=4;
+			break;
+		case CMD_CHIP_ERASE:
+			as=0;
+			ls=1;
+			break;
+		default:
+			printf("send cmd: cmd '%02x' not supported\n",cmd);
 			return -1;
+	}
+
+	size=1+as+ls;
+	send[0]=cmd;
+
+	for(i=0;i<as;i++)
+		send[1+i]=(addr>>((as-1-i)*8))&0xff;
+	for(i=0;i<ls;i++)
+		send[1+i+as]=(len>>((ls-1-i)*8))&0xff;
+
+	cnt=0;
+	while(size) {
+		ret=write(sfd,send+cnt,size);
+		if(ret<0) {
+			perror("dump file: send cmd ");
+			return ret;
 		}
+		size-=ret;
+		cnt+=ret;
+	}
 
-		switch(argv[i][1]) {
-			case 'd':
-				strncpy(tts,argv[++i],127);
+	/* flush  */
+	tcflush(sfd,TCIOFLUSH);
+
+	return 0;
+}
+
+int write_to_flash(t_lpc *lpc,u8 *buf,u32 addr,int len) {
+
+	int cnt,ret;
+	u8 cksml,cksmr;
+	int i;
+
+	/* prepare addr */
+	addr+=lpc->roff;
+
+	/* send cmd */
+	send_cmd(lpc->sfd,addr,len,CMD_WRITE);
+
+	/* transfer data */
+	cnt=0;
+	cksml=0;
+	while(len) {
+		ret=write(lpc->sfd,buf+cnt,len);
+		if(ret<0) {
+			perror("transmit flash content (w)");
+			return ret;
+		}
+		for(i=cnt;i<cnt+ret;i++)
+			cksml+=buf[i];
+		len-=ret;
+		cnt+=ret;
+	}
+
+
+	/* check ack */
+	while(1) {
+		ret=read(lpc->sfd,&cksmr,1);
+		if(ret<0) {
+			perror("write to flash: read cksm");
+			return ret;
+		}
+		if(ret==1) break;
+	}
+	if(cksml!=cksmr) {
+		printf("FATAL: wrong checksum or failure in flash write!\n");
+		if(cksml+1==cksmr)
+			printf(" -> most probably due to flash write!\n");
+		else
+			printf(" -> most probably failure in transfer!\n");
+		printf(" addr:0x%08x l:%02x r:%02x\n",addr,cksml,cksmr);
+	}
+
+	return 0;
+}
+
+int firmware_to_mem(t_lpc *lpc,u8 memtype) {
+
+	char buf[BUFSIZE];
+	u32 addr,len,type;
+	int ret,temp;
+	int fd;
+
+	/* prepare for memory type */
+	if(memtype==RAM)
+		fd=lpc->fwfd;
+	else if(memtype==FLASH)
+		fd=lpc->ffwfd;
+	else
+		return -1;
+
+	/* another evil hack to support binary format */
+	if((lpc->info&BINARY)&&(memtype==FLASH)) {
+		addr=0;
+		ret=1;
+		while(ret) {
+			ret=read(fd,buf,16);
+			if(ret!=16) {
+				printf("D'OH ...\n");
+				return -1;
+			}
+			buf[16]='s'; // skip
+			for(temp=0;temp<16;temp++)
+				if((u8)buf[temp]!=0xff)
+					buf[16]='w'; // write
+			printf("addr:%08x\r",addr+lpc->roff);
+			fflush(stdout);
+			if(buf[16]=='w') 
+				write_to_flash(lpc,(u8 *)buf,addr,16);
+			addr+=16;
+		}
+		return 0;
+	}
+
+	/* read a line */
+	ret=1;
+	while(ret) {
+		/* sync line */
+		ret=read(fd,buf,1);
+		switch(buf[0]) {
+			case '\r':
+				continue;
+			case '\n':
+				continue;
+			case ':':
+				/* start code */
 				break;
-			case 'f':
-				strncpy(fw,argv[++i],127);
-				info|=FIRMWARE;
+			default:
+				printf("fw to mem: no ihex format\n");
+				return -1;
+		}
+		/* read len */
+		ret=read(fd,buf,2);
+		sscanf(buf,"%02x",&len);
+		/* read addr */
+		ret=read(fd,buf,4);
+		sscanf(buf,"%04x",&addr);
+		/* read type */
+		ret=read(fd,buf,2);
+		sscanf(buf,"%02x",&type);
+		/* successfull return if type is end of file */
+		if(type==0x01)
+			return 0;
+		/* read data (and cksum) */
+		ret=read(fd,buf,2*(len+1));
+		if(ret!=(2*(len+1))) {
+			printf("fw to mem: data missing\n");
+				return -1;
+		}
+		for(ret=0;ret<len;ret++) {
+			sscanf(buf+2*ret,"%02x",&temp);
+			buf[ret]=temp;
+		}
+		/* act according to type */
+		switch(type) {
+			//case 0x03:
+			//	/* get cs and ip */
+			//	break;
+			case 0x00:
+				if(len%4) {
+					printf("fw to mem: invalid len\n");
+					return -1;
+				}
+				if(memtype==RAM)
+					write_to_ram(lpc,buf,addr,len);
+				else
+					write_to_flash(lpc,(u8 *)buf,addr,len);
 				break;
-			case 'v':
-				info|=VERBOSE;
+			case 0x04:
+				lpc->roff=((buf[0]<<24)|(buf[1]<<16));
 				break;
-			case 'c':
-				strncpy(cfreq,argv[++i],7);
+			case 0x05:
+				lpc->jaddr=((buf[0]<<24)|(buf[1]<<16));
+				lpc->jaddr|=((buf[2]<<8)|buf[3]);
 				break;
 			default:
-				usage();
+				printf("fw to mem: unknown type %02x\n",type);
 				return -1;
 		}
-
 	}
 
-	/*
-	 * open serial device
-	 */
+	return 0;
+}
 
-	tts_fd=open(tts,O_RDWR);
-	if(tts_fd<0) {
-		perror("tts open");
-		return tts_fd;
-	}
+int lpc_txbuf_flush(t_lpc *lpc) {
 
-	/*
-	 * configure serial device
-	 */
+	int i,ret;
+	u8 buf[16];
 
-	tcgetattr(tts_fd,&term);
+	ret=1;
+	printf("flushing lpc tx buffer: ");
+	while(ret) {
+		ret=read(lpc->sfd,buf,16);
+		for(i=0;i<ret;i++)
+			printf("%02x ",buf[i]);
+	}
+	printf("\n");
 
-	// input/output baudrate
+	return 0;
+}
 
-	cfsetispeed(&term,B9600);
-	cfsetospeed(&term,B9600);
+int dump_files(int sfd,int dfd,u32 addr,u32 len) {
 
-	// control options -> 8n1
+	int ret;
+	int size;
+	int cnt;
+	u8 buf[16];
 
-	term.c_cflag&=~PARENB;	// no parity
-	term.c_cflag&=~CSTOPB;	// only 1 stop bit
-	term.c_cflag&=~CSIZE;	// no bit mask for data bits
-	term.c_cflag|=CS8;	// 8 data bits
+	printf("dumping content (addr=0x%08x, len=0x%08x) ...\n",addr,len);
 
-	// line options -> raw input
-	
-	term.c_lflag&=~(ICANON|ECHO|ECHOE|ISIG);
+	/* send the cmd */
+	send_cmd(sfd,addr,len,CMD_READ);
 
-	// input options -> disable flow control
-	
-	term.c_iflag&=~(IXON|IXOFF|IXANY);
+	/* receive data and dump it to file */
+	ret=1;
+	cnt=0;
+	printf("  receiving data ...\n");
+	while(ret) {
+		ret=read(sfd,buf,16);
+		if(ret<0) {
+			perror("dump file: read data");
+			return ret;
+		}
+		size=ret;
+		cnt=0;
+		while(size) {
+			ret=write(dfd,buf+cnt,size-cnt);
+			if(ret<0) {
+				perror("dump file: write data");
+				return ret;
+			}
+			cnt+=ret;
+			size-=ret;
+		}
+	}
 
-	// more control options -> timeout
-	
-	term.c_cc[VMIN]=0;
-	term.c_cc[VTIME]=10;	// 1 second timeout
+	return 0;
+}
 
-	tcsetattr(tts_fd,TCSANOW,&term);
+int main(int argc,char **argv) {
 
-	/* auto baud sequence */
+	t_lpc lpc;
+	int i;
+	int ret;
 
-	printf("auto baud sequence ...\n");
-	write(tts_fd,"?",1);
-	len=0;
-	txrx(tts_fd,buf,&len,info);
-	if(strncmp(buf,"Synchronized\r\n",14)) {
-		printf("auto baud detection failed\n");
-		return -1;
-	}
+	/*
+	 * initial ... 
+	 */
 
-	/* tell bl that we are synchronized (it's allready in buf) */
+	memset(&lpc,0,sizeof(t_lpc));
+	strncpy(lpc.freq,CRYSTFREQ,7);
+	lpc.roff=RAMOFFSET;
+	lpc.jaddr=RAMOFFSET;
 
-	printf("sync sequence ...\n");
-	len=14;
-	txrx(tts_fd,buf,&len,info);
-	if(strncmp(buf,"OK\r\n",4)) {
-		printf("sync failed\n");
-		return -1;
-	}
+	/* parse argv */
 
-	/* tell bl the crystal frequency */
+	for(i=1;i<argc;i++) {
 
-	printf("frequency setting sequence ...\n");
-	len=strlen(cfreq)+2;
-	strncpy(buf,cfreq,BUFSIZE);
-	buf[len-2]='\r';
-	buf[len-1]='\n';
-	txrx(tts_fd,buf,&len,info);
-	if(strncmp(buf,"OK\r\n",4)) {
-		printf("freq set failed\n");
-		return -1;
-	}
+		if(argv[i][0]!='-') {
+			usage();
+			return -1;
+		}
 
-	/* read part id */
-	printf("read part id ...\n");
-	len=3;
-	memcpy(buf,"J\r\n",3);
-	txrx(tts_fd,buf,&len,info);
-	buf[len]='\0';
-	printf("part id: %d (0x%x)\n",atoi(buf),atoi(buf+3));
+		switch(argv[i][1]) {
+			case 'd':
+				strncpy(lpc.sdev,argv[++i],127);
+				break;
+			case 'f':
+				strncpy(lpc.fwfile,argv[++i],127);
+				lpc.info|=FIRMWARE;
+				break;
+			case 'v':
+				lpc.info|=VERBOSE;
+				break;
+			case 'c':
+				strncpy(lpc.freq,argv[++i],7);
+				break;
+			case 'D':
+				if(argv[i][2]=='0') {
+					lpc.info|=BANK0;
+					strncpy(lpc.bank0,argv[++i],127);
+					break;
+				}
+				else if(argv[i][2]=='2') {
+					lpc.info|=BANK2;
+					strncpy(lpc.bank2,argv[++i],127);
+					break;
+				}
+				else if(argv[i][2]=='b') {
+					lpc.info|=BL;
+					strncpy(lpc.bl,argv[++i],127);
+					break;
+				}
+				else {
+					usage();
+					return -1;
+				}
+			case 'w':
+				strncpy(lpc.ffwfile,argv[++i],127);
+				lpc.info|=FLASHFW;
+				break;
+			case 'b':
+				lpc.info|=BINARY;
+				break;
+			default:
+				usage();
+				return -1;
+		}
 
-	/* read boot code version */
-	printf("read boot code version ...\n");
-	len=3;
-	memcpy(buf,"K\r\n",3);
-	txrx(tts_fd,buf,&len,info);
-	buf[len]='\0';
-	printf("boot code version: %c %c\n",(buf),atoi(buf));
+	}
 
+	/* open serial port */
+	if(open_serial_device(&lpc)<0)
+		goto end;
 
+	/* boot loader init */
+	printf("boot loader init ...\n");
+	if(bl_init(&lpc)<0)
+		return -1;
 
+	/* quit if there is no hex file to process */
+	if(!(lpc.info&FIRMWARE)) {
+		printf("no firmware -> aborting\n");
+		goto end;
+	}
 
-	// to be continued ... (parsing fw file and poking it to ram)
+	/* open firmware file */
+	if(open_firmware(&lpc)<0)
+		goto end;
+
+	/* open dump files */
+	if(open_dumpfiles(&lpc)<0)
+		goto end;
+
+	/* parse intel hex file and write to ram */
+	printf("write firmware to ram ...\n");
+	firmware_to_mem(&lpc,RAM);
+
+	/* unlock go cmd */
+	printf("unlock go command ...\n");
+	unlock_go(&lpc);
+
+	/* go! */
+	printf("go ...\n");
+	ret=go(&lpc);
+
+	/* flush the lpc2220 tx buf */
+	lpc_txbuf_flush(&lpc);
+
+	/* reconfigure the serial port */
+	if(reconfig_serial_device(&lpc)<0)
+		goto end;
+
+	/* download flash/bootloader content */
+	if(lpc.info&BANK0)
+		dump_files(lpc.sfd,lpc.b0fd,BANK0_ADDR,BANK_SIZE);
+	if(lpc.info&BANK2)
+		dump_files(lpc.sfd,lpc.b2fd,BANK2_ADDR,BANK_SIZE);
+	if(lpc.info&BL)
+		dump_files(lpc.sfd,lpc.blfd,BL_ADDR,BL_SIZE);
+
+	/* write a firmware to the lpc flash */
+	if(lpc.info&FLASHFW) {
+		printf("writing firmware to flash ...\n");
+		send_cmd(lpc.sfd,0,'0',CMD_CHIP_ERASE);
+		/* ack */
+		ret=0;
+		while(!ret)
+			read(lpc.sfd,&ret,1);
+		lpc.roff=BANK0_ADDR;
+		firmware_to_mem(&lpc,FLASH);
+	}
 
 end:
-	close(tts_fd);
+	if(lpc.sfd)
+		close(lpc.sfd);
+	if(lpc.fwfd)
+		close(lpc.fwfd);
+	if(lpc.b0fd)
+		close(lpc.b0fd);
+	if(lpc.b2fd)
+		close(lpc.b2fd);
+	if(lpc.blfd)
+		close(lpc.blfd);
+	if(lpc.ffwfd)
+		close(lpc.ffwfd);
 
 	return 0;
 }