load kernel from usb sometimes dma read more bytes than request,so if buf is local var in function stack is overflow.

now we defien buf in load cmd is static and more size to make load kernel from usb ok.

pmon/cmds/load.c

@@ -102,7 +102,7 @@ nload (argc, argv)
 	char **argv;
 {
 	char path[256];
-	char buf[DLREC+1];
+	static char buf[1024];
 	long ep;
 	int n;
 	extern int optind;

pmon/cmds/mycmd.c

@@ -222,6 +222,8 @@ int bs=0x20000;
 int seek=0,skip=0;
 char *fsrc=0,*fdst=0;
 unsigned int count=-1,nowcount=0;
+char pstr[80]="";
+int quiet=0;
 #if NGZIP > 0
 int unzip=0;
 #endif
@@ -238,6 +240,8 @@ if(argc<3)return -1;
 	 skip=strtoul(&argv[i][5],0,0);
 	else if(!strncmp(argv[i],"seek=",5))
 	 seek=strtoul(&argv[i][5],0,0);
+	else if(!strncmp(argv[i],"quiet=",6))
+	 quiet=strtoul(&argv[i][6],0,0);
 #if NGZIP > 0
 	else if(!strcmp(argv[i],"unzip=1"))
 	unzip=1;
@@ -279,7 +283,13 @@ if(argc<3)return -1;
 		pnow+=n;
 		}
 	nowcount+=rcount;
-	printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\r%d",nowcount);
+	if(!(strstr(argv[1],"/dev/tty")||strstr(argv[2],"/dev/tty")||quiet))
+	{
+	int i;
+	for(i=0;i<strlen(pstr);i++)printf("\b \b");
+	sprintf(pstr,"%d",nowcount);
+	printf("%s",pstr);
+	}
 	if(write(fp1,buf,bs)<bs||rcount<bs)break;
 	}
 	free(buf);
@@ -1755,7 +1765,7 @@ static const Cmd Cmds[] =
 	{"mycmp","s1 s2 len",0,"mecmp s1 s2 len",mycmp,4,4,CMD_REPEAT},
 	{"mymore","",0,"mymore",mymore,1,99,CMD_REPEAT},
 	{"flashs",	"rom", 0, "select flash for read/write", flashs, 0, 99, CMD_REPEAT},
-	{"devcp",	"srcfile dstfile [bs=0x20000] [count=-1] [seek=0] [skip=0]", 0, "copy form src to dst",devcp, 0, 99, CMD_REPEAT},
+	{"devcp",	"srcfile dstfile [bs=0x20000] [count=-1] [seek=0] [skip=0] [quiet=0]", 0, "copy form src to dst",devcp, 0, 99, CMD_REPEAT},
 	{0, 0}
 };