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cksm implemented (still basic flash access not working!)
[my-code/arm.git]
/
betty
/
lpcload.c
diff --git
a/betty/lpcload.c
b/betty/lpcload.c
index
4f62a59
..
748a096
100644
(file)
--- a/
betty/lpcload.c
+++ b/
betty/lpcload.c
@@
-539,31
+539,30
@@
int send_cmd(int sfd,u32 addr,u32 len,u8 cmd) {
send[1+i+as]=(len>>((ls-1-i)*8))&0xff;
cnt=0;
send[1+i+as]=(len>>((ls-1-i)*8))&0xff;
cnt=0;
- printf(" sending cmd: ");
while(size) {
ret=write(sfd,send+cnt,size);
if(ret<0) {
perror("dump file: send cmd ");
return ret;
}
while(size) {
ret=write(sfd,send+cnt,size);
if(ret<0) {
perror("dump file: send cmd ");
return ret;
}
- for(i=cnt;i<cnt+ret;i++)
- printf("%02x ",send[i]);
size-=ret;
cnt+=ret;
}
size-=ret;
cnt+=ret;
}
- printf("\n");
return 0;
}
return 0;
}
-int write_to_flash(t_lpc *lpc,
char
*buf,u32 addr,int len) {
+int write_to_flash(t_lpc *lpc,
u8
*buf,u32 addr,int len) {
int cnt,size,ret;
int cnt,size,ret;
+ u8 cksm;
/* send cmd */
/* send cmd */
- send_cmd(lpc->sfd,addr,len,CMD_WRITE);
+ send_cmd(lpc->sfd,addr
+lpc->roff
,len,CMD_WRITE);
/* transfer data */
/* transfer data */
+ cnt=0;
+ cksm=0;
while(len) {
size=2;
while(size) {
while(len) {
size=2;
while(size) {
@@
-574,7
+573,21
@@
int write_to_flash(t_lpc *lpc,char *buf,u32 addr,int len) {
}
size-=ret;
}
}
size-=ret;
}
+ cksm+=buf[cnt];
+ cksm+=buf[cnt+1];
cnt+=2;
cnt+=2;
+ len-=2;
+ }
+
+ /* check ack */
+ ret=read(lpc->sfd,buf,1);
+ if(ret<0) {
+ perror("write to flash: ack rx");
+ return ret;
+ }
+ if(buf[0]!=cksm) {
+ printf("FATAL: write to ram: wrong checksum!\n");
+ return -1;
}
return 0;
}
return 0;
@@
-647,7
+660,7
@@
int firmware_to_mem(t_lpc *lpc,u8 memtype) {
if(memtype==RAM)
write_to_ram(lpc,buf,addr,len);
else
if(memtype==RAM)
write_to_ram(lpc,buf,addr,len);
else
- write_to_flash(lpc,buf,addr,len);
+ write_to_flash(lpc,
(u8 *)
buf,addr,len);
break;
case 0x04:
lpc->roff=((buf[0]<<24)|(buf[1]<<16));
break;
case 0x04:
lpc->roff=((buf[0]<<24)|(buf[1]<<16));
@@
-841,7
+854,8
@@
int main(int argc,char **argv) {
/* write a firmware to the lpc flash */
if(lpc.info&FLASHFW) {
/* write a firmware to the lpc flash */
if(lpc.info&FLASHFW) {
- send_cmd(lpc.sfd,0,0,CMD_CHIP_ERASE);
+ printf("writing firmware to flash ...\n");
+ send_cmd(lpc.sfd,0,'0',CMD_CHIP_ERASE);
lpc.roff=BANK0_ADDR;
firmware_to_mem(&lpc,FLASH);
}
lpc.roff=BANK0_ADDR;
firmware_to_mem(&lpc,FLASH);
}