On 01/12/2012 06:53 PM, Manfred wrote: > Dear Xenomai-Developers/Users, > > I am trying to get xenomai running on an omap3630 device (gumstix overo). > xenomai 2.6.0/kernel: linux-omap3-2.6.38 / i-pipe patch > 2.6.38.8-arm-1.18.04 > > I would like to use the UART devices in a RT-application, > and I was following the following guidelines: > http://www.xenomai.org/index.php/16550A > > I had to do some changes to Kconfig in arch/arm/mach-omap2:Kconfig, > so that the omap_serial driver would not be compiled-in and so that > I could actually disable the driver with setserial > (and correspondingly had to make some changes here and there because the > devices are now called /dev/ttySx and not /dev/ttyOx, as in the > omap_serial driver...)
I wonder why that's all necessary. On x86, just just do "setserial /dev/ttyS0 uart none" before loading 16550A. Why is the name a problem? > dmesg then reports: > serial8250.0: ttyS0 at MMIO 0x4806a000 (irq = 72) is a ST16654 > serial8250.1: ttyS1 at MMIO 0x4806c000 (irq = 73) is a ST16654 > serial8250.2: ttyS2 at MMIO 0x49020000 (irq = 74) is a ST16654 > serial8250.3: ttyS3 at MMIO 0x49042000 (irq = 80) is a ST16654 > > Anyway, finally I was able to the following: >>setserial /dev/ttyS0 uart none >>modprobe xeno_16550A mem=0x4806a000 irq=72 baud_base=3000000 > > (parameters same as here: > http://www.mail-archive.com/xenomai-help@gna.org/msg10708.html > ) > > And then I immediately get the following Error: > > -------------------- > Unhandled fault: external abort on non-linefetch (0x1028) at 0xfa06a002 > Internal error: : 1028 [#1] Hm, address might be unaligned. Maybe you need a regshift=2... and some other quirks as well. Wolfgang. _______________________________________________ Xenomai-help mailing list Xenomai-help@gna.org https://mail.gna.org/listinfo/xenomai-help
