c43756da94
Because Qube1 doesn't have a serial chip waiting for transmit fifo empty takes forever, which isn't a good idea. No prom_putchar/early console for Qube1 fixes this. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Acked-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
20 lines
343 B
C
20 lines
343 B
C
/*
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* (C) P. Horton 2006
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*/
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#include <linux/io.h>
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#include <linux/serial_reg.h>
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#include <cobalt.h>
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#define UART_BASE ((void __iomem *)CKSEG1ADDR(0x1c800000))
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void prom_putchar(char c)
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{
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if (cobalt_board_id <= COBALT_BRD_ID_QUBE1)
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return;
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while (!(readb(UART_BASE + UART_LSR) & UART_LSR_THRE))
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;
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writeb(c, UART_BASE + UART_TX);
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}
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