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Commit bedfc8a0 authored by Grant Likely's avatar Grant Likely Committed by Josh Boyer
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[POWERPC] Uartlite: Flush RX fifo in bootwrapper 



Flush the uartlite RX fifo so that characters typed before entry into
the zImage wrapper do not muck up the kernel command line.

Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: default avatarJosh Boyer <jwboyer@linux.vnet.ibm.com>
parent 267b49a9

arch/ppc/boot/simple/misc-embedded.c

+3 −1
Original line number Diff line number Diff line
@@ -89,7 +89,9 @@ load_kernel(unsigned long load_addr, int num_words, unsigned long cksum, bd_t *b 
	 * initialize the serial console port.

	 */

	embed_config(&bp);

#if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE)

#if defined(CONFIG_SERIAL_CPM_CONSOLE) || \

    defined(CONFIG_SERIAL_8250_CONSOLE) || \

    defined(CONFIG_SERIAL_UARTLITE_CONSOLE)

	com_port = serial_init(0, bp);

#endif

arch/ppc/boot/simple/uartlite_tty.c

+8 −0
Original line number Diff line number Diff line
@@ -16,6 +16,14 @@ 


#define UARTLITE_BASEADDR ((void*)(XPAR_UARTLITE_0_BASEADDR))



unsigned long

serial_init(int chan, void *ignored)

{

	/* Clear the RX FIFO */

	out_be32(UARTLITE_BASEADDR + 0x0C, 0x2);

	return 0;

}



void

serial_putc(unsigned long com_port, unsigned char c)

{