* author: hackbard@hackdaworld.org, rolf.anders@physik.uni-augsburg.de
*
* build: make
- * usage: sudo ./lpcload -d /dev/ttyS0 -f firmware.hex [-v]
+ * usage: sudo ./lpcload -d /dev/ttyS0 -f firmware.hex -D0 fw0.bin [-v]
*/
#include <stdio.h>
#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_SYNC 0x02
-#define TXRX_TYPE_CMD 0x03
-#define TXRX_TYPE_DATA 0x04
-#define TXRX_TYPE_CKSM 0x05
+#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 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
char sdev[128]; /* seriel device */
int fwfd; /* fimrware fd */
char fwfile[128]; /* firmware file */
- u8 info; /* info/mode */
+ u32 info; /* info/mode */
char freq[8]; /* frequency */
- u32 hoff; /* start addr of ihex file */
+ 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(" -r <ram offset>\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");
}
// input/output baudrate
- cfsetispeed(&term,B9600);
- cfsetospeed(&term,B9600);
+ cfsetispeed(&term,B38400);
+ cfsetospeed(&term,B38400);
// control options -> 8n1
// input options -> enable flow control
- //term.c_iflag&=~(IXON|IXOFF|IXANY|INLCR|ICRNL);
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]=10; // 1 second timeout
- term.c_cc[VSTART]=0x11;
- term.c_cc[VSTOP]=0x13;
+ 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 open_firmware(t_lpc *lpc) {
+int reconfig_serial_device(t_lpc *lpc) {
+ struct termios term;
int ret;
- char buf[BUFSIZE];
+
+ /* 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)
+ if(lpc->fwfd<0) {
perror("fw open");
+ return lpc->fwfd;
+ }
- /* read hex file offset */
-
- ret=read(lpc->fwfd,buf,7);
- if(buf[0]!=':') {
- printf("fw open: not an intel hex file?\n");
- return -1;
+ if(lpc->info&FLASHFW) {
+ lpc->ffwfd=open(lpc->ffwfile,O_RDONLY);
+ if(lpc->ffwfd<0) {
+ perror("ffw open");
+ return lpc->ffwfd;
+ }
}
- sscanf(buf+3,"%04x",&(lpc->hoff));
- lseek(lpc->fwfd,0,SEEK_SET);
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;
printf("| (%d)\n",cnt);
}
+
+
/* cut the echo if not of type auto baud */
if(type!=TXRX_TYPE_BAUD) {
}
}
+ /* return if type is go */
+
+ if(type==TXRX_TYPE_GO)
+ return cnt;
+
/* return here if type is data */
if(type==TXRX_TYPE_DATA)
char buf[BUFSIZE];
int ret,len;
- snprintf(buf,BUFSIZE,"G %d A\r\n",lpc->roff);
+ snprintf(buf,BUFSIZE,"G %d A\r\n",lpc->jaddr);
len=strlen(buf);
- ret=txrx(lpc,buf,len,TXRX_TYPE_CMD);
+ ret=txrx(lpc,buf,len,TXRX_TYPE_GO);
return ret;
}
for(i=len;i<nlen;i++) buf[i]=0;
/* prepare addr */
- addr+=(lpc->roff-lpc->hoff);
+ addr+=lpc->roff;
/* prepare write command */
if(lpc->info&VERBOSE)
return 0;
}
-int firmware_to_ram(t_lpc *lpc) {
+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;
+ }
+
+ /* 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(lpc->fwfd,buf,1);
+ ret=read(fd,buf,1);
switch(buf[0]) {
case '\r':
continue;
/* start code */
break;
default:
- printf("fw to ram: no ihex format\n");
+ printf("fw to mem: no ihex format\n");
return -1;
}
/* read len */
- ret=read(lpc->fwfd,buf,2);
+ ret=read(fd,buf,2);
sscanf(buf,"%02x",&len);
- if(len%4) {
- printf("fw to ram: len not a multiple of 4\n");
- return -1;
- }
/* read addr */
- ret=read(lpc->fwfd,buf,4);
+ ret=read(fd,buf,4);
sscanf(buf,"%04x",&addr);
/* read type */
- ret=read(lpc->fwfd,buf,2);
+ 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(lpc->fwfd,buf,2*(len+1));
+ ret=read(fd,buf,2*(len+1));
if(ret!=(2*(len+1))) {
- printf("fw to ram: data missing\n");
+ printf("fw to mem: data missing\n");
return -1;
}
for(ret=0;ret<len;ret++) {
}
/* act according to type */
switch(type) {
- case 0x03:
- /* get cs and ip */
- break;
+ //case 0x03:
+ // /* get cs and ip */
+ // break;
case 0x00:
- write_to_ram(lpc,buf,addr,len);
+ 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 0x04:
+ lpc->roff=((buf[0]<<24)|(buf[1]<<16));
+ break;
+ case 0x05:
+ lpc->jaddr=((buf[0]<<24)|(buf[1]<<16));
+ lpc->jaddr|=((buf[2]<<8)|buf[3]);
break;
default:
- printf("fw to ram: unknown type %02x\n",type);
+ printf("fw to mem: unknown type %02x\n",type);
return -1;
}
}
return 0;
}
+int lpc_txbuf_flush(t_lpc *lpc) {
+
+ int i,ret;
+ u8 buf[16];
+
+ 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");
+
+ return 0;
+}
+
+int dump_files(int sfd,int dfd,u32 addr,u32 len) {
+
+ int ret;
+ int size;
+ int cnt;
+ u8 buf[16];
+
+ printf("dumping content (addr=0x%08x, len=0x%08x) ...\n",addr,len);
+
+ /* send the cmd */
+ send_cmd(sfd,addr,len,CMD_READ);
+
+ /* 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;
+ }
+ }
+
+ return 0;
+}
+
int main(int argc,char **argv) {
t_lpc lpc;
int i;
+ int ret;
/*
* initial ...
memset(&lpc,0,sizeof(t_lpc));
strncpy(lpc.freq,CRYSTFREQ,7);
lpc.roff=RAMOFFSET;
+ lpc.jaddr=RAMOFFSET;
/* parse argv */
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;
if(open_serial_device(&lpc)<0)
goto end;
- /* open firmware file */
- if(open_firmware(&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;
+ }
+
+ /* 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_ram(&lpc);
+ firmware_to_mem(&lpc,RAM);
/* unlock go cmd */
printf("unlock go command ...\n");
/* go! */
printf("go ...\n");
- go(&lpc);
- printf("\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(lpc.sfd);
- close(lpc.fwfd);
+ 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;
}
projects / my-code / arm.git / blobdiff