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[PATCH] powerpc: serial port discovery (#2)

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This moves the discovery of legacy serial ports to a separate file,
makes it common to ppc32 and ppc64, and reworks it to use the new OF
address translators to get to the ports early. This new version can also
detect some PCI serial cards using legacy chips and will probably match
those discovered port with the default console choice.

Only ppc64 gets udbg still yet, unifying udbg isn't finished yet.

It also adds some speed-probing code to udbg so that the default console
can come up at the same speed it was set to by the firmware.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2005-11-23 17:56:06 +11:00
committed by Paul Mackerras
parent d1405b8698
commit 463ce0e103
15 changed files with 607 additions and 390 deletions
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14
arch/powerpc/platforms/maple/setup.c
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@@ -192,20 +192,6 @@ static void __init maple_init_early(void)
*/
hpte_init_native();
/* Find the serial port */
generic_find_legacy_serial_ports(&physport, &default_speed);
DBG("phys port addr: %lx\n", (long)physport);
if (physport) {
void *comport;
/* Map the uart for udbg. */
comport = (void *)ioremap(physport, 16);
udbg_init_uart(comport, default_speed);
DBG("Hello World !\n");
}
/* Setup interrupt mapping options */
ppc64_interrupt_controller = IC_OPEN_PIC;