Date: Wed, 5 Dec 2012 23:52:28 -0800 From: Oleksandr Tymoshenko <gonzo@bluezbox.com> To: "<freebsd-arm@freebsd.org>" <freebsd-arm@freebsd.org> Subject: FreeBSD/armv6 for QEMU Message-ID: <B0C37560-A258-43C7-83E3-CF35F20A62B8@bluezbox.com>
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Hello, I've just finished first version of VersatilePB support for FreeBSD/armv6. QEMU uses this machine as a base for armv6 emulation. Full patch: http://people.freebsd.org/~gonzo/arm/qemu/versatilepb.diff Build/run info: http://kernelnomicon.org/?p=229 Kernel supports serial console, timers, primary and secondary interrupt controllers, PCI, LCD controller, Keyboard/Mouse interface (partially, no LEDs suport, no mouse) Some patches are not versatile-pb specific so I'd like more people to look at them: - http://people.freebsd.org/~gonzo/patches/fdt-baseaddr.diff Check for return code of fdt_get_range and if it fails assume base address is zero. Otherwise pbase was used uninitialized and causes exception - http://people.freebsd.org/~gonzo/patches/smc-interrupts.diff Disable if_smc's interrupt in filter. It is reenabled by taskqueue later - http://people.freebsd.org/~gonzo/patches/sym-barrier.diff Barrier function for ARM There is one more PL011-specific change, but Im still not sure if it's correct Some notes taken during development: - FDT support for handling interrupt-source property is insufficient for cascading interrupt controllers. I think concept of global IRQ space, arm_get_next_irq and related functions should be reconsidered at least for FDT-enabled kernels. - Proper PS/2 keyboard support for arch other than sparc/x86 is inevitable code duplications. PS/2 protocol logic should be extracted from dev/atkbd and made arch-indepedent. - Framebuffer/syscons driver is PITA. No news herehelp
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