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doc: add iomem kernel parameter for board inspector 

Without this ``iomem=relaxed`` kernel parameter, the generated board XML
is essentially the same as having ``--basic`` when executing the board
inspector, i.e. the ACPI namespace will not be parsed. The generated
board XML may still work, but some functionality (e.g. passthru of TPM
and other PCI devices that need INTx) will no longer work due to lack of
hardware information.

Replacing PR #6618

Tracked-On: #5692

Signed-off-by: zhongzhenx.liu <zhongzhenx.liu@intel.com>
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
This commit is contained in:
David B. Kinder 2021-09-24 09:37:16 -07:00 committed by David Kinder
parent f39c882359
commit bd57475854
2 changed files with 3 additions and 3 deletions
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4
doc/getting-started/getting-started.rst
View File

@ -284,13 +284,13 @@ Generate a Board Configuration File
.. code-block:: bash .. code-block:: bash
idle=nomwait intel_idle.max_cstate=0 intel_pstate=disable idle=nomwait iomem=relaxed intel_idle.max_cstate=0 intel_pstate=disable
Example: Example:
.. code-block:: bash .. code-block:: bash
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash idle=nomwait intel_idle.max_cstate=0 intel_pstate=disable" GRUB_CMDLINE_LINUX_DEFAULT="quiet splash idle=nomwait iomem=relaxed intel_idle.max_cstate=0 intel_pstate=disable"
These settings allow the board inspector tool to These settings allow the board inspector tool to
gather important information about the board. gather important information about the board.

2
misc/config_tools/board_inspector/README
View File

@ -10,4 +10,4 @@ Please run this script under native Linux environment with root privilege.
OS requirement: OS requirement:
Release: Ubuntu 18.04+ Release: Ubuntu 18.04+
Tools: cpuid, rdmsr, lspci, lxml, dmidecode (optional) Tools: cpuid, rdmsr, lspci, lxml, dmidecode (optional)
kernel cmdline: "idle=nomwait intel_idle.max_cstate=0 intel_pstate=disable" kernel cmdline: "idle=nomwait iomem=relaxed intel_idle.max_cstate=0 intel_pstate=disable"