• Shannon Zhao's avatar
    Xen: EFI: Parse DT parameters for Xen specific UEFI · 0cac5c30
    Shannon Zhao authored
    The EFI DT parameters for bare metal are located under /chosen node,
    while for Xen Dom0 they are located under /hyperviosr/uefi node. These
    parameters under /chosen and /hyperviosr/uefi are not expected to appear
    at the same time.
    
    Parse these EFI parameters and initialize EFI like the way for bare
    metal except the runtime services because the runtime services for Xen
    Dom0 are available through hypercalls and they are always enabled. So it
    sets the EFI_RUNTIME_SERVICES flag if it finds /hyperviosr/uefi node and
    bails out in arm_enable_runtime_services() when EFI_RUNTIME_SERVICES
    flag is set already.
    Signed-off-by: default avatarShannon Zhao <shannon.zhao@linaro.org>
    Cc: Stefano Stabellini <sstabellini@kernel.org>
    Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
    Cc: Leif Lindholm <leif.lindholm@linaro.org>
    Signed-off-by: default avatarMatt Fleming <matt@codeblueprint.co.uk>
    0cac5c30
enlighten.c 12.5 KB