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doc: add iomem kernel parameter for board inspector

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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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misc/config_tools/board_inspector/README
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@@ -10,4 +10,4 @@ Please run this script under native Linux environment with root privilege.
OS requirement:
Release: Ubuntu 18.04+
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"