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/linux/Documentation/admin-guide/
H A Ddell_rbu.rst2 Dell Remote BIOS Update driver (dell_rbu)
8 Document demonstrating the use of the Dell Remote BIOS Update driver
9 for updating BIOS images on Dell servers and desktops.
15 It does not cover the support needed from applications to enable the BIOS to
22 the BIOS on Dell servers (starting from servers sold since 1999), desktops
28 Libsmbios can also be used to update BIOS on Dell systems go to
31 Dell_RBU driver supports BIOS update using the monolithic image and packetized
33 of physical pages having the BIOS image. In case of packetized the app
41 inform the BIOS to enable the update in the next system reboot.
43 The user should not unload the rbu driver after downloading the BIOS image
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H A Dsvga.rst13 allows the use of various special video modes supported by the video BIOS. Due
14 to usage of the BIOS, the selection is limited to boot time (before the
16 booted through BIOS firmware (as opposed to through UEFI, kexec, etc.).
70 with VESA-compliant BIOS]) or a chipset name (e.g., Trident). Direct detection
87 on the VGA BIOS).
96 program will try to ask the BIOS for all possible video mode numbers and test
99 all consistent video modes supported by your BIOS will appear (plus maybe some
121 0x0100 to 0x017f - standard BIOS modes. The ID is a BIOS video mode number
124 0x0200 to 0x08ff - VESA BIOS modes. The ID is a VESA mode ID increased by
129 945=132x28 for the standard Video7 BIOS)
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/linux/Documentation/firmware-guide/acpi/
H A Dosi.rst7 An ACPI BIOS can use the "Operating System Interfaces" method (_OSI)
8 to find out what the operating system supports. Eg. If BIOS
11 and answer YES or NO to the BIOS.
16 This document explains how and why the BIOS and Linux should use these methods.
28 So even though the BIOS may use _OSI to query what version of Windows is running,
29 only a single path through the BIOS has actually been tested.
30 Experience shows that taking untested paths through the BIOS
31 exposes Linux to an entire category of BIOS bugs.
42 using the same BIOS image? Often they need to do something different
56 However this was discovered to be abused by other BIOS vendors to change
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/linux/Documentation/driver-api/mtd/
H A Dspi-intel.rst2 Upgrading BIOS using spi-intel
6 controller which is used to hold BIOS and other platform specific data.
12 allows upgrading the BIOS image directly from an OS.
21 Please keep in mind that overwriting the BIOS image on SPI serial flash
25 Below are the steps how to upgrade MinnowBoard MAX BIOS directly from
28 1) Download and extract the latest Minnowboard MAX BIOS SPI image
40 (it is named as "BIOS")::
44 mtd0: 00800000 00001000 "BIOS"
69 8) Once completed without errors you can write the new BIOS image::
74 BIOS image::
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/linux/Documentation/fb/
H A Duvesafb.rst8 uvesafb should work with any video card that has a Video BIOS compliant
12 v86d. v86d is used to run the x86 Video BIOS code in a simulated and
33 cards, but which is ultimately limited by the Video BIOS interface.
39 with uvesafb, simply because the Video BIOS doesn't support the
42 ratio, which is what most BIOS-es are limited to.
44 Video BIOS. Note that many nVidia Video BIOS-es claim to be VBE 3.0
101 vtotal:n If the video BIOS of your card incorrectly determines the total
102 amount of video RAM, use this option to override the BIOS (in MiB).
119 has any effect only if the Video BIOS is VBE 3.0 compliant. Use it
122 be ignored and the refresh rate will stay at your BIOS default
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H A Dvesafb.rst8 of the BIOS, and use this as framebuffer device /dev/fb0, like the m68k
13 impossible; BIOS calls work in real mode only. VESA BIOS Extensions
74 If this does not work, this might be because your BIOS does not support
76 Even if your board does, it might be the BIOS which does not. VESA BIOS
114 The VESA BIOS provides protected mode interface for changing
117 seems not to work with some BIOS versions, but there are options
181 vtotal:n If the video BIOS of your card incorrectly determines the total
182 amount of video RAM, use this option to override the BIOS (in MiB).
/linux/drivers/mtd/maps/
H A DKconfig165 mtd0 and mtd2 are the two BIOS drives, which use the resident
168 mtd1 allows you to reprogram your BIOS. BE VERY CAREFUL.
202 tristate "BIOS flash chip on AMD76x southbridge"
205 Support for treating the BIOS flash chip on AMD76x motherboards
206 as an MTD device - with this you can reprogram your BIOS.
211 tristate "BIOS flash chip on Intel Controller Hub 2/3/4/5"
214 Support for treating the BIOS flash chip on ICHX motherboards
215 as an MTD device - with this you can reprogram your BIOS.
220 tristate "BIOS flash chip on Intel ESB Controller Hub 2"
223 Support for treating the BIOS flash chip on ESB2 motherboards
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/linux/drivers/pnp/pnpbios/
H A DKconfig3 # Plug and Play BIOS configuration
6 bool "Plug and Play BIOS support"
10 Linux uses the PNPBIOS as defined in "Plug and Play BIOS
19 BIOS) say Y here. Also the PNPBIOS can help prevent resource
27 bool "Plug and Play BIOS /proc interface"
/linux/Documentation/firmware-guide/acpi/apei/
H A Deinj.rst10 You need to check whether your BIOS supports EINJ first. For that, look
15 which shows that the BIOS is exposing an EINJ table - it is the
22 don't exist: before you give up, go into BIOS setup to see if the BIOS
26 the BIOS menu.
127 this actually works depends on what operations the BIOS actually
155 BIOS versions based on the ACPI 4.0 specification have limited options
156 in controlling where the errors are injected. Your BIOS may support an
162 BIOS versions based on the ACPI 5.0 specification have more control over
186 An ACPI 5.0 BIOS may also allow vendor-specific errors to be injected.
188 from the BIOS that hopefully will allow an application wishing to use
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/linux/drivers/gpu/drm/amd/display/dc/bios/
H A DMakefile26 BIOS = bios_parser.o bios_parser_interface.o bios_parser_helper.o command_table.o command_table_he… macro
28 BIOS += command_table2.o command_table_helper2.o bios_parser2.o
30 AMD_DAL_BIOS = $(addprefix $(AMDDALPATH)/dc/bios/,$(BIOS))
/linux/Documentation/scsi/
H A Daha152x.rst46 Don't test for BIOS signature (AHA-1510 or disabled BIOS)
69 When you do this, the BIOS test is skipped. Entered values have to be
126 The BIOS uses a cylinder/head/sector addressing scheme (C/H/S)
127 scheme instead. DOS expects a BIOS or driver that understands this
134 Therefore the SCSI BIOS/DOS driver has to calculate a logical/virtual
136 returned by the SCSI BIOS is a pure calculation and has nothing to
149 The AHA-1522 BIOS calculates the geometry by fixing the number of heads
157 extended translation. This means that the BIOS uses 255 for heads,
164 not be configurable in certain BIOS setups.
/linux/Documentation/hwmon/
H A Dnct7802.rst27 Tested Boards and BIOS Versions
31 BIOS versions.
34 Board BIOS version
H A Dk10temp.rst41 BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h Processors:
45 BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors:
49 BIOS and Kernel Developer's Guide (BKDG) for AMD Family 12h Processors:
53 BIOS and Kernel Developer's Guide (BKDG) for AMD Family 14h Models 00h-0Fh Processors:
118 If the BIOS has enabled hardware temperature control, the threshold at
/linux/Documentation/sound/hd-audio/
H A Dmodels.rst426 auto-config reading BIOS (default)
492 auto-config reading BIOS (default)
573 BIOS setup (default)
588 BIOS setup (default)
633 BIOS setup (default)
654 BIOS setup (default)
671 Fixes with Dell BIOS setup
673 Fixes with Dell BIOS setup including analog mic
677 BIOS setup (default)
698 BIOS setup (default)
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/linux/Documentation/gpu/nova/core/
H A Dvbios.rst12 The format of the images in the ROM follow the "BIOS Specification" part of the
19 - PciAt Image (Type 0x00) - This is the standard PCI BIOS image, whose name
22 - EFI Image (Type 0x03) - This is the EFI BIOS image. It contains the UEFI GOP
175 The location of the PMU lookup table is found by scanning the BIT (`BIOS Information Table`_)
181 .. _`BIOS Information Table`: https://download.nvidia.com/open-gpu-doc/BIOS-Information-Table/1/BIO…
/linux/Documentation/admin-guide/acpi/
H A Dinitrd_table_override.rst12 via upgrading the ACPI tables provided by the BIOS with an instrumented,
35 Complain to your platform/BIOS vendor if you find a bug which is so severe
37 allows you to upgrade the buggy tables before your platform/BIOS vendor
38 releases an upgraded BIOS binary.
40 This facility can be used by platform/BIOS vendors to provide a Linux
44 ACPI BIOS table compatibility with the Linux kernel by modifying old
/linux/Documentation/ABI/testing/
H A Dsysfs-firmware-lefi-boardinfo5 Get mainboard and BIOS info easily on the Loongson platform,
7 and BIOS version when there exists problems related with
23 BIOS Info
H A Dsysfs-driver-ppi7 Presence Interface). Only if TPM is supported by BIOS, this
50 take place in order to transition to the BIOS for execution of
60 operation to be executed in the pre-OS environment by the BIOS
71 operation to be executed in the pre-OS environment by the BIOS
/linux/Documentation/driver-api/cxl/platform/acpi/
H A Dcedt.rst7 The CXL Early Discovery Table is generated by BIOS to describe the CXL memory
8 regions configured at boot by the BIOS.
32 programmed by BIOS.
/linux/Documentation/power/
H A Dvideo.rst10 initialized by BIOS, and kernel does not have enough information to
14 This is not problem for swsusp, because during swsusp resume, BIOS is
19 We either have to run video BIOS during early resume, or interpret it
44 (2) systems where it is possible to call the video BIOS during S3
45 resume. Unfortunately, it is not correct to call the video BIOS at
50 the BIOS works well enough to be able to set video mode. Use
95 Acer Aspire 1406LC ole's late BIOS init (7), turn off DRI
148 BIOS 1.04 2002-08-23, but not at all with
149 BIOS 1.11 2004-11-05 :-(]
/linux/Documentation/arch/x86/
H A Dpat.rst218 D E MTRR -> PAT disable Disabled BIOS
220 - np/E PAT -> PAT disable Disabled BIOS
222 E !P/E MTRR -> PAT init Disabled BIOS
223 D !P/E MTRR -> PAT disable Disabled BIOS
224 !M !P/E MTRR stub -> PAT disable Disabled BIOS
238 BIOS PAT keeps PAT MSR with BIOS setting
/linux/Documentation/admin-guide/pm/
H A Dcpufreq_drivers.rst32 The drivers use BIOS supplied tables to obtain frequency and
34 Frequency transitions will be unavailable if the BIOS does
43 is available in the "BIOS and Kernel Developer's Guide", publication
46 BIOS supplied data, for powernow-k7 and for powernow-k8, may be
163 the system with a single call to the BIOS.
190 However, it is possible to disable this interface via a BIOS setting. In
223 frequencies need to be listed because the BIOS will try to achieve any
237 conditions are met the BIOS can achieve a slightly higher speed than requested
245 nominal frequency from the BIOS, sometimes, the values displayed by
/linux/drivers/platform/x86/intel/int1092/
H A DKconfig8 sensors captured in the BIOS. ACPI interface exposes this data from the BIOS
/linux/Documentation/translations/zh_CN/dev-tools/
H A Dgdb-kernel-debugging.rst109 [ 0.000000] e820: BIOS-provided physical RAM map:
110 [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
111 [ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
/linux/Documentation/translations/zh_TW/dev-tools/
H A Dgdb-kernel-debugging.rst105 [ 0.000000] e820: BIOS-provided physical RAM map:
106 [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
107 [ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved

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