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02eb7a8eee
Document the newly added sysfs ABI for accessing the in-memory debug log provided by OVMF EFI firmware (when enabled) Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
45 lines
1.6 KiB
Text
45 lines
1.6 KiB
Text
What: /sys/firmware/efi/fw_vendor
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Date: December 2013
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Contact: Dave Young <dyoung@redhat.com>
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Description: It shows the physical address of firmware vendor field in the
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EFI system table.
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Users: Kexec
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What: /sys/firmware/efi/runtime
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Date: December 2013
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Contact: Dave Young <dyoung@redhat.com>
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Description: It shows the physical address of runtime service table entry in
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the EFI system table.
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Users: Kexec
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What: /sys/firmware/efi/config_table
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Date: December 2013
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Contact: Dave Young <dyoung@redhat.com>
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Description: It shows the physical address of config table entry in the EFI
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system table.
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Users: Kexec
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What: /sys/firmware/efi/systab
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Date: April 2005
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Contact: linux-efi@vger.kernel.org
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Description: Displays the physical addresses of all EFI Configuration
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Tables found via the EFI System Table. The order in
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which the tables are printed forms an ABI and newer
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versions are always printed first, i.e. ACPI20 comes
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before ACPI.
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Users: dmidecode
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What: /sys/firmware/efi/tables/rci2
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Date: July 2019
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Contact: Narendra K <Narendra.K@dell.com>, linux-bugs@dell.com
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Description: Displays the content of the Runtime Configuration Interface
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Table version 2 on Dell EMC PowerEdge systems in binary format
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Users: It is used by Dell EMC OpenManage Server Administrator tool to
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populate BIOS setup page.
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What: /sys/firmware/efi/ovmf_debug_log
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Date: July 2025
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Contact: Gerd Hoffmann <kraxel@redhat.com>, linux-efi@vger.kernel.org
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Description: Displays the content of the OVMF debug log buffer. The file is
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only present in case the firmware supports logging to a memory
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buffer.
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