[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: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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@ -89,7 +89,9 @@ load_kernel(unsigned long load_addr, int num_words, unsigned long cksum, bd_t *b
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* initialize the serial console port.
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*/
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embed_config(&bp);
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#if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE)
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#if defined(CONFIG_SERIAL_CPM_CONSOLE) || \
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defined(CONFIG_SERIAL_8250_CONSOLE) || \
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defined(CONFIG_SERIAL_UARTLITE_CONSOLE)
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com_port = serial_init(0, bp);
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#endif
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@ -16,6 +16,14 @@
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#define UARTLITE_BASEADDR ((void*)(XPAR_UARTLITE_0_BASEADDR))
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unsigned long
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serial_init(int chan, void *ignored)
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{
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/* Clear the RX FIFO */
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out_be32(UARTLITE_BASEADDR + 0x0C, 0x2);
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return 0;
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}
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void
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serial_putc(unsigned long com_port, unsigned char c)
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{
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