Commit 70dea47d authored by Hollis Blanchard's avatar Hollis Blanchard Committed by Josh Boyer

[POWERPC] 4xx: Implement udbg_getc() for 440

Implement udbg_getc() for 440, which fixes xmon input.
Signed-off-by: default avatarHollis Blanchard <hollisb@us.ibm.com>
Acked-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarJosh Boyer <jwboyer@linux.vnet.ibm.com>
parent 504ca43e
...@@ -206,11 +206,22 @@ static void udbg_44x_as1_putc(char c) ...@@ -206,11 +206,22 @@ static void udbg_44x_as1_putc(char c)
} }
} }
static int udbg_44x_as1_getc(void)
{
if (udbg_comport) {
while ((as1_readb(&udbg_comport->lsr) & LSR_DR) == 0)
; /* wait for char */
return as1_readb(&udbg_comport->rbr);
}
return -1;
}
void __init udbg_init_44x_as1(void) void __init udbg_init_44x_as1(void)
{ {
udbg_comport = udbg_comport =
(volatile struct NS16550 __iomem *)PPC44x_EARLY_DEBUG_VIRTADDR; (volatile struct NS16550 __iomem *)PPC44x_EARLY_DEBUG_VIRTADDR;
udbg_putc = udbg_44x_as1_putc; udbg_putc = udbg_44x_as1_putc;
udbg_getc = udbg_44x_as1_getc;
} }
#endif /* CONFIG_PPC_EARLY_DEBUG_44x */ #endif /* CONFIG_PPC_EARLY_DEBUG_44x */
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment