Mitsuru IWASAKI wrote: > > Hi, Maxim. Thanks for reporting and reminding us. > > I think this is very difficult to fix, because; > 1. Basically, this is a bug in BIOS, should be reported to vendor.
I understood that, but it is a discontinued model, so it is unlikely that they will bother to provide updated BIOS just to satisfy those strange that want to run FreeBSD on it. :(( > 2. ACPI CA is developed by Intel. We'd like to have less local > workaround changes as possible. Ok, I see. > 3. I'm not sure whether suggested patches (buffer size dynamicaly expanding) > in [acpi-jp 1315] is correct fix, maybe not. Probably another approach > can be considered (e.g. just ignore AE_AML_BUFFER_LIMIT and continue > interpreter execution). > > I'll describe again the problem. This method is like this; > Method(_CRS) { > Name(BUF0, Buffer(0x18) {0x47, 0x1, 0xf2, 0x3, 0xf2, 0x3, > 0x0, 0x4, 0x47, 0x1, 0xf7, 0x3, 0xf7, 0x3, 0x0, > 0x1, 0x22, 0x40, 0x0, 0x2a, 0x4, 0x0, 0x79, 0x0 }) > CreateByteField(BUF0, 0x2, IOLO) > CreateByteField(BUF0, 0x3, IOHI) > CreateByteField(BUF0, 0x4, IORL) > CreateByteField(BUF0, 0x5, IORH) > CreateByteField(BUF0, 0x19, IRQL) > CreateByteField(BUF0, 0x1c, DMAV) > Return(BUF0) > } > > The problem is that this AML is trying to create a field at exceeded > position (0x19) of the Buffer (size is 0x18). > And strangely, this method just return the buffer w/o any changes > after CreateByteField operations. I guess that BIOS writer forgotten to > delete CreateByteField statements, or change the buffer size. > > Now that we have DSDT override patches; > http://home.jp.freebsd.org/cgi-bin/showmail/acpi-jp/1347 > or > http://home.jp.freebsd.org/cgi-bin/showmail/acpi-jp/1349 > > and AML disassembler (acpidump), and ASL compiler (iasl) in > ports/devel/acpicatools/. > > Maxim, could you apply the following patches and try DSDT overriding? Looks like a way to go. I'll test them tomorrow and let you know then. Big thanks! -Maxim To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message