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[POWERPC] 4xx: Implement udbg_getc() for 440
Implement udbg_getc() for 440, which fixes xmon input. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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1 changed files with 11 additions and 0 deletions
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@ -206,11 +206,22 @@ static void udbg_44x_as1_putc(char c)
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}
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}
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}
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}
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static int udbg_44x_as1_getc(void)
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{
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if (udbg_comport) {
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while ((as1_readb(&udbg_comport->lsr) & LSR_DR) == 0)
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; /* wait for char */
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return as1_readb(&udbg_comport->rbr);
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}
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return -1;
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}
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void __init udbg_init_44x_as1(void)
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void __init udbg_init_44x_as1(void)
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{
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{
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udbg_comport =
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udbg_comport =
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(volatile struct NS16550 __iomem *)PPC44x_EARLY_DEBUG_VIRTADDR;
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(volatile struct NS16550 __iomem *)PPC44x_EARLY_DEBUG_VIRTADDR;
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udbg_putc = udbg_44x_as1_putc;
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udbg_putc = udbg_44x_as1_putc;
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udbg_getc = udbg_44x_as1_getc;
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}
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}
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#endif /* CONFIG_PPC_EARLY_DEBUG_44x */
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#endif /* CONFIG_PPC_EARLY_DEBUG_44x */
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