[PATCH] early console for au1x00

Hello,

here a patch to add early console support for au1x00.

I also attach a patch who fixes au1x00 serial address space by using
only physical addresses. Please, note that this change allow to simply
file "drivers/serial/8250.c" since functions
__raw_readl()/__raw_writel() can be replaced by functions
readl()/writel().

At boot time I get:

   Starting kernel .Linux version 2.6.17-rc4-gde4a1dae-dirty (giometti@zaigor) 
(gcc version 3.4.3) #83 Mon May 22 22:34:47 CEST 2006
   CPU revision is: 02030204
   Board WWPC1000 version 1.0
   WWPC-setup: uC=off
   (PRId 02030204) @ 396MHZ
   BCLK switching enabled!
   Early serial console at AU 0x11100000 (options '115200')
   ...
   Serial: 8250/16550 driver $Revision: 1.90 $ 3 ports, IRQ sharing disabled
   serial8250.8: ttyS0 at MMIO 0x11100000 (irq = 0) is a 16550A
   serial8250.8: ttyS1 at MMIO 0x11200000 (irq = 1) is a 16550A
   serial8250.8: ttyS2 at MMIO 0x11400000 (irq = 3) is a 16550A
   ...
   Adding console on ttyS0 at AU 0x11100000 (options '115200')
   ...

and at system running time I get:

   hostname:~# cat /proc/iomem
   10100000-101fffff : au1xxx-ohci.0
     10100000-101fffff : ohci_hcd
   10500000-1050ffff : eth-base
   10520000-10520003 : eth-mac
   11100000-111fffff : serial
   11200000-112fffff : serial
   11400000-114fffff : serial

which is coherent with other system devices.

Ciao,

Rodolfo

-- 

GNU/Linux Solutions                  e-mail:    giometti@xxxxxxxxxxxx
Linux Device Driver                             giometti@xxxxxxxxx
Embedded Systems                                giometti@xxxxxxxx
UNIX programming                     phone:     +39 349 2432127

patch-au1x00-early-console
Description: Text document

patch-au1x00-serial-phys-addr
Description: Text document

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