plan9.ini(8): ACPI update
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@ -632,16 +632,18 @@ These specify the IP address of the file and authentication server
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to use when mounting a network-provided root file system.
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to use when mounting a network-provided root file system.
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They are used only if the addresses cannot be determined via DHCP.
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They are used only if the addresses cannot be determined via DHCP.
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.SS PROCESSOR
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.SS PROCESSOR
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.SS \fLe820=\fIstart end ...\fP
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.SS \fL*e820=\fItype \fB0x\fIstart \fB0x\fIend ...\fP
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This variable is automatically generated by the boot loader (see
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This variable is automatically generated by the boot loader (see
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.IR 9boot (8))
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.IR 9boot (8))
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by doing a BIOS E820 memory scan while still in realmode and
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by doing a BIOS E820 memory scan while still in realmode and
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passed to the kernel. The format is a unordered list of
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passed to the kernel. The format is a unordered list of
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hexadecimal 64-bit
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decimal region
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.I type
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and hexadecimal 64-bit
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.I start
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.I start
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and
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and
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.I end
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.I end
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addresses of the usable memory areas.
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addresses of the area.
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.SS \fL*maxmem=\fIvalue\fP
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.SS \fL*maxmem=\fIvalue\fP
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This defines the maximum physical address that the system will scan when sizing memory.
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This defines the maximum physical address that the system will scan when sizing memory.
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By default the PC operating system will scan up to 3.75 gigabytes
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By default the PC operating system will scan up to 3.75 gigabytes
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@ -689,6 +691,8 @@ Setting
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restricts the kernel to starting at most
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restricts the kernel to starting at most
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.I value
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.I value
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processors.
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processors.
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.SS \fL*apicdebug=\fP
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Prints a summary of the multiprocessor APIC interrupt configuration.
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.SS \fL*msi=\fP
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.SS \fL*msi=\fP
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Enables message signaled interrupts on devices that support it (see
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Enables message signaled interrupts on devices that support it (see
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.IR icanhasmsi (8)).
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.IR icanhasmsi (8)).
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@ -710,6 +714,8 @@ on a PCI bus (default 31).
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.SS \fL*nopcirouting=\fP
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.SS \fL*nopcirouting=\fP
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Disable pci routing during boot. May solve interrupt routing
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Disable pci routing during boot. May solve interrupt routing
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problems on certain machines.
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problems on certain machines.
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.SS \fL*pcihinv=\fP
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Prints a summary of the detected PCI busses and devices.
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.SS \fL*nodumpstack=\fP
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.SS \fL*nodumpstack=\fP
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Disable printing a stack dump on panic.
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Disable printing a stack dump on panic.
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Useful if there is only a limited cga screen available,
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Useful if there is only a limited cga screen available,
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@ -730,6 +736,17 @@ For example:
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.EX
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.EX
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umbexclude=0xD1800-0xD3FFF
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umbexclude=0xD1800-0xD3FFF
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.EE
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.EE
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.SS \fL*acpi=\fIvalue\fP
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The presence of this option enables ACPI and the export of the
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.B #P/acpitbls
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file in
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.IR arch (3)
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device. In multiprocessor mode, the kernel will use the ACPI
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tables to configure APIC interrupts unless a
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.I value
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of
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.B 0
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is specified.
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.SS \fLapm0=\fP
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.SS \fLapm0=\fP
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This enables the ``advanced power management'' interface
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This enables the ``advanced power management'' interface
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as described in
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as described in
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