Hi all, The situation is: Our custom board needs to use SCM1 as console, and has an external quad uart chip (16C554) connected to the external bus, mapped at 0xf8100000. I am using the ppclinux_2_4_devel tree from Denx. I ioremapped that address space, and it seems to work. Right now I don't have the daughterboard with the quad-uarts working (as in hardware), so I can't fully test that.
The problem is: Apparently arch/ppc/8xx_io/uart.c doesn't take into account other serial drivers that may initialize later, and uses a serial_state struct statically. Shouldn't this be visible to the outside? Shouldn't there be a global serial_state structure somewhere that lists all serial ports? Right now, I get this: ----------------------------------- ... CPM UART driver version 0.04 ttyS0 at 0x0280 is on SMC1 using BRG1 ttyS1 at 0x0200 is on SCC3 using BRG2 ttyS2 at 0x0300 is on SCC4 using BRG3 pty: 256 Unix98 ptys configured Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ enabled ... VFS: Mounted root (jffs2 filesystem). Mounted devfs on /dev Freeing unused kernel memory: 56k init ------------------------------------ And then nothing more. I assume, at that point init opens /dev/console (ttyS0) and that device doesn't exist, since drivers/char/serial.c doesn't detect any uart at the moment. If it did, maybe I would get console stuff out of the first 16c554 port. Has anybody else tried this? What would be the right way to fix this? Greetings, -- David Jander Protonic Holland.
