# This is a BitKeeper generated patch for the following project: # Project Name: Linux kernel tree # This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas: # ChangeSet 1.930.37.28+1.930.45.3 -> 1.930.50.1 # Documentation/Configure.help 1.128.12.32 -> 1.128.13.9 # diff -Nru a/Documentation/Configure.help b/Documentation/Configure.help --- a/Documentation/Configure.help Wed Oct 8 09:08:30 2003 +++ b/Documentation/Configure.help Wed Oct 8 09:08:30 2003 @@ -18519,70 +18519,64 @@ will issue the hlt instruction if nothing is to be done, thereby sending the processor to sleep and saving power. -ACPI support -CONFIG_ACPI - ACPI/OSPM support for Linux is currently under development. As such, - this support is preliminary and EXPERIMENTAL. Configuring ACPI - support enables kernel interfaces that allow higher level software - (OSPM) to manipulate ACPI defined hardware and software interfaces, - including the evaluation of ACPI control methods. If unsure, choose - N here. Note, this option will enlarge your kernel by about 120K. - - This support requires an ACPI compliant platform (hardware/firmware). - If both ACPI and Advanced Power Management (APM) support are - configured, whichever is loaded first shall be used. - - This code DOES NOT currently provide a complete OSPM implementation - -- it has not yet reached APM's level of functionality. When fully - implemented, Linux ACPI/OSPM will provide a more robust functional - replacement for legacy configuration and power management - interfaces, including the Plug-and-Play BIOS specification (PnP - BIOS), the Multi-Processor Specification (MPS), and the Advanced - Power Management specification (APM). - - Linux support for ACPI/OSPM is based on Intel Corporation's ACPI - Component Architecture (ACPI CA). The latest ACPI CA source code, - documentation, debug builds, and implementation status information - can be downloaded from: - . - - The ACPI Sourceforge project may also be of interest: - - -Enable ACPI 2.0 with errata 1.3 -CONFIG_ACPI20 - Enable support for the 2.0 version of the ACPI interpreter. See the - help for ACPI for caveats and discussion. - -ACPI kernel configuration manager -CONFIG_ACPI_KERNEL_CONFIG - If you say `Y' here, Linux's ACPI support will use the - hardware-level system descriptions found on IA64 machines. - -ACPI Debug Statements -CONFIG_ACPI_DEBUG - The ACPI driver can optionally report errors with a great deal - of verbosity. Saying Y enables these statements. This will increase - your kernel size by around 50K. +ACPI Support +CONFIG_ACPI_ENABLE + Advanced Configuration and Power Interface (ACPI) support for + Linux requires an ACPI compliant platform (hardware/firmware), + and assumes the presence of OS-directed configuration and power + management (OSPM) software. This option will enlarge your + kernel by about 70K. + + Linux ACPI provides a robust functional replacement for several + legacy configuration and power management intefaces, including + the Plug-and-Play BIOS specification (PnP BIOS), the + MultiProcessor Specification (MPS), and the Advanced Power + Management (APM) specification. If both ACPI and APM support + are configured, whichever is loaded first shall be used. + + Add "acpi=off" to the kernel command line to disable this feature. + (Try "man bootparam" or see the documentation of your boot loader + about how to pass options to the kernel at boot time.) + + Add "acpi=ht-only" to the kernel command line to limit ACPI + support to processor enumeration only (see CONFIG_ACPI_HT_ONLY). + + ---------- + + The ACPI SourceForge project contains the latest source code, + documentation, tools, mailing list subscription, and other + information. This project is available at: + + + Linux support for ACPI is based on Intel Corporation's ACPI + Component Architecture (ACPI CA). For more information see: + + + ACPI is an open industry specification co-developed by Compaq, + Intel, Microsoft, Phoenix, and Toshiba. The specification is + available at: + + +CONFIG_ACPI_HT_ONLY + This option enables limited ACPI support -- just enough to + enumerate processors from the ACPI Multiple APIC Description + Table (MADT). Note that ACPI supports both logical (e.g. Hyper- + Threading) and physical processors, where the MultiProcessor + Specification (MPS) table only supports physical processors. -ACPI Bus Manager -CONFIG_ACPI_BUSMGR - The ACPI Bus Manager enumerates devices in the ACPI namespace, and - handles PnP messages. All ACPI devices use its services, so using - them requires saying Y here. + Full ACPI support (CONFIG_ACPI) is preferred. Use this option + only if you wish to limit ACPI's role to processor enumeration. -ACPI System Driver -CONFIG_ACPI_SYS - This driver will enable your system to shut down using ACPI, and - dump your ACPI DSDT table using /proc/acpi/dsdt. +CONFIG_ACPI_AC + This driver adds support for the AC Adapter object, which indicates + whether a system is on AC, or not. Typically, only mobile systems + have this object, since desktops are always on AC. -ACPI Processor Driver -CONFIG_ACPI_CPU - This driver installs ACPI as the idle handler for Linux, and uses - ACPI C2 and C3 processor states to save power, on systems that - support it. +CONFIG_ACPI_BATTERY + This driver adds support for battery information through + /proc/acpi/battery. If you have a mobile system with a battery, + say Y. -ACPI Button CONFIG_ACPI_BUTTON This driver registers for events based on buttons, such as the power, sleep, and lid switch. In the future, a daemon will read @@ -18590,27 +18584,34 @@ down the system. Until then, you can cat it, and see output when a button is pressed. -ACPI AC Adapter -CONFIG_ACPI_AC - This driver adds support for the AC Adapter object, which indicates - whether a system is on AC, or not. Typically, only laptops have - this object, since desktops are always on AC. - -ACPI Embedded Controller CONFIG_ACPI_EC This driver is required on some systems for the proper operation of - the battery and thermal drivers. If you are compiling for a laptop, - say Y. + the battery and thermal drivers. If you are compiling for a + mobile system, say Y. -ACPI Control Method Battery -CONFIG_ACPI_CMBATT - This driver adds support for battery information through - /proc/acpi/battery. If you have a laptop with a battery, say Y. +CONFIG_ACPI_PROCESSOR + This driver installs ACPI as the idle handler for Linux, and uses + ACPI C2 and C3 processor states to save power, on systems that + support it. -ACPI Thermal CONFIG_ACPI_THERMAL - This driver handles overheating conditions on laptops. It is HIGHLY - recommended, as your laptop CPU may be damaged without it. + This driver adds support for ACPI thermal zones. Most mobile and + some desktop systems support ACPI thermal zones. It is HIGHLY + recommended that this option be enabled, as your processor(s) + may be damaged without it. + +CONFIG_ACPI_FAN + This driver adds support for ACPI fan devices, allowing user-mode + applications to perform basic fan control (on, off, status). + +CONFIG_ACPI_SYSTEM + This driver will enable your system to shut down using ACPI, and + dump your ACPI DSDT table using /proc/acpi/dsdt. + +CONFIG_ACPI_DEBUG + The ACPI driver can optionally report errors with a great deal + of verbosity. Saying Y enables these statements. This will increase + your kernel size by around 50K. Advanced Power Management BIOS support CONFIG_APM @@ -25630,11 +25631,13 @@ # Choice: ia64type Itanium CONFIG_ITANIUM - Select your IA64 processor type. The default is Intel Itanium. + Select your IA-64 processor type. The default is Intel Itanium. + This choice is safe for all IA-64 systems, but may not perform + optimally on systems with, say, Itanium 2 or newer processors. -McKinley +Itanium 2 CONFIG_MCKINLEY - Select this to configure for a McKinley processor. + Select this to configure for an Itanium 2 (McKinley) processor. # Choice: ia64system IA-64 system type @@ -25711,12 +25714,31 @@ and restore instructions. It's useful for tracking down spinlock problems, but slow! If you're unsure, select N. -Early printk support (requires VGA!) +Early printk support CONFIG_IA64_EARLY_PRINTK - Selecting this option uses the VGA screen for printk() output before - the consoles are initialised. It is useful for debugging problems - early in the boot process, but only if you have a VGA screen - attached. If you're unsure, select N. + Selecting this option uses a UART or VGA screen (or both) for + printk() output before the consoles are initialised. It is useful + for debugging problems early in the boot process, but only if you + have a serial terminal or a VGA screen attached. If you're unsure, + select N. + +Early printk on serial port +CONFIG_IA64_EARLY_PRINTK_UART + Select this option to use a serial port for early printk() output. + You must also select either CONFIG_IA64_EARLY_PRINTK_UART_BASE or + CONFIG_SERIAL_HCDP. If you select CONFIG_SERIAL_HCDP, early + printk() output will appear on the first console device described by + the HCDP. If you set CONFIG_IA64_EARLY_PRINTK_UART_BASE, the HCDP + will be ignored. + +UART base address +CONFIG_IA64_EARLY_PRINTK_UART_BASE + The physical MMIO address of the UART to use for early printk(). + This overrides any UART located using the EFI HCDP table. + +Early printk on VGA +CONFIG_IA64_EARLY_PRINTK_VGA + Select this option to use VGA for early printk() output. Print possible IA64 hazards to console CONFIG_IA64_PRINT_HAZARDS