Re: Return EFI_INVALID_PARAMETER if attribute only has EFI_VARIABLE_NON_VOLATILE set
On 10/21/21 12:18, Sunny Wang wrote:
Hi Liming, Hao, and allThe Self Certification Test (SCT) II Case Specification, June 2017
explicitly forbids this value for QueryVariableInfo():
Call QueryVariableInfo service with the Attributes:
The returned code must be EFI_INVALID_PARAMETER.
This corresponds to the UEFI specification saying:
Status Codes returned
An invalid combination of attribute bits was supplied.
A variable being not accessible at BootTime seems not to be foreseen by
If software uses a nonvolatile variable, it should use a variable that
is only accessible at boot services time if possible.
Attributes that have EFI_VARIABLE_RUNTIME_ACCESS set must also have
This sounds like a nonvolatile variable should always be accessible at
boot services time. But an explicit rule forbidding the creation of
inaccessible variables, i.e. without EFI_VARIABLE_BOOTSERVICE_ACCESS, is
It would be good to have a paragraph in the specification that
unambiguously defines which combination of attribute bits are valid.
"All variables must be created with attribute bit