serial: convert early_uart to earlycon for 8250
[linux-2.6.git] / Documentation / kernel-parameters.txt
index 4d880b3..62aab58 100644 (file)
@@ -462,13 +462,20 @@ and is between 256 and 4096 characters. It is defined in the file
                        Documentation/networking/netconsole.txt for an
                        alternative.
 
-               uart,io,<addr>[,options]
-               uart,mmio,<addr>[,options]
+               uart[8250],io,<addr>[,options]
+               uart[8250],mmio,<addr>[,options]
                        Start an early, polled-mode console on the 8250/16550
                        UART at the specified I/O port or MMIO address,
                        switching to the matching ttyS device later.  The
                        options are the same as for ttyS, above.
 
+       earlycon=       [KNL] Output early console device and options.
+               uart[8250],io,<addr>[,options]
+               uart[8250],mmio,<addr>[,options]
+                       Start an early, polled-mode console on the 8250/16550
+                       UART at the specified I/O port or MMIO address.
+                       The options are the same as for ttyS, above.
+
        cpcihp_generic= [HW,PCI] Generic port I/O CompactPCI driver
                        Format:
                        <first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>]