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Export fw_vendor, runtime and config table physical addresses to
/sys/firmware/efi/{fw_vendor,runtime,config_table} because kexec kernels
need them.
From EFI spec these 3 variables will be updated to virtual address after
entering virtual mode. But kernel startup code will need the physical
address.
Signed-off-by: Dave Young <dyoung@redhat.com>
Tested-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
21 lines
621 B
Plaintext
21 lines
621 B
Plaintext
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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