Hello, El 20/04/15 a les 17.20, Kevin O'Connor ha escrit: > On Mon, Apr 20, 2015 at 04:28:03PM +0200, Roger Pau Monné wrote: >> Hello, >> >> El 16/04/15 a les 19.51, Kevin O'Connor ha escrit: >>> On Thu, Apr 16, 2015 at 06:37:29PM +0200, Roger Pau Monné wrote: >>>> El 16/04/15 a les 17.52, Kevin O'Connor ha escrit: >>>>> Seems like the same problem. You wont be able to set a gdb breakpoint >>>>> for the freebsd call because freebsd isn't calling the bios - it's >>>>> attempting to interpret the bios code. >>>>> >>>>> Does the seabios patch below fix the problem for you? >>>> >>>> Seems to kind of fix it, but it's hard to tell. >>>> >>>> Most of the time the original SeaBIOS binary works without problems. >>>> There's sometimes were the int 0x15 call with ah=0xc0 returns what seem >>>> to be valid values in ah and flg, but the values in es and bx are >>>> corrupted so when freebsd tries to access this region (es << 4 + bx) it >>>> gets a page fault. >>>> >>>> This is what I see now with the patch applied: >>>> >>>> atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0 >>>> atkbd0: <AT Keyboard> irq 1 on atkbdc0 >>>> Calling INT 0x15 (ax=0xc000 bx=0x0000 cx=0x0000 dx=0x0000 es=0x0000 >>>> di=0x0000) >>>> Exiting INT 0x15 (ax=0xf9c0 bx=0xf9c0 cx=0xf99e dx=0xdf80 es=0x0000 >>>> di=0x0000) >>>> kbd0 at atkbd0 >>>> atkbd0: [GIANT-LOCKED] >>> >>> Ah, looks like the freebsd code isn't even checking if x86emu exited >>> abnormally. >> >> Yes, this is something that can be solved without much work AFAICT, so >> that we know if the emulator exited correctly or not. However this is >> only a side-effect of what's actually happening. > > If changing freebsd code, I would change it to set the repeat rate to > a standard default irrespective of what the bios uses, and thus not > call the bios at all.
Following commit gets rid of the usage of the BIOS from atkbd: https://svnweb.freebsd.org/base?view=revision&revision=282269 The remaining usage of x86emu should be fine AFAICT because it's only used with int10h. I will backport it to stable branches in two weeks, so next FreeBSD releases should be fine. Roger. _______________________________________________ SeaBIOS mailing list [email protected] http://www.seabios.org/mailman/listinfo/seabios
