[U-Boot] ctrl-c detection (on 4xx platforms)

11 Sep 2008


      Hi,
I noticed some strange CTRL-C behavior in a BSP command. 
When I run my bsp command interactively everything is fine.
The command waits for a condition and displays a rotating cursor
(see board/esd/common/cmd_loadpci.c):
...
int do_loadpci(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
    ...
    char str[] = "\|/-";
    ...
while(1) {
    	...
    	*ptr = 0xffffffff;
    	puts("\nWaiting for action from pci host -");
/*
    	 * Wait for host to write the start address
    	 */
    	while (*ptr == 0xffffffff) {
    		count++;
    		if (!(count % 100)) {
    			count2++;
    			putc(0x08); /* backspace */
    			putc(str[count2 % 4]);
    		}
/* Abort if ctrl-c was pressed */
    		if (ctrlc()) {
    			puts("\nAbort\n");
    			return 0;
    		}
udelay(1000);
    	}
    }
    ...
}
But when I call this bsp command as bootcmd CTRL-C does not stop the while loop. So CTRL-C 
is not detected. Any idea?
Matthias

[U-Boot] ctrl-c detection (on 4xx platforms)

Matthias Fuchs