mirror of https://github.com/acidanthera/audk.git
fcca9f67fb
Introduce the new public API QemuFwCfgSkipBytes(), for advancing over bytes in the selected firmware configuration item without transferring data between the item and the caller. When the DMA interface is available (the common case), the operation is instantaneous. As a fallback, provide a loop of chunked reads into a small stack-allocated scratch buffer. This patch enables OvmfPkg/QemuFwCfgLib to overwrite part of a writeable fw_cfg file, which will be particularly useful for the upcoming QEMU_LOADER_WRITE_POINTER command in OvmfPkg/AcpiPlatformDxe. Cc: Jordan Justen <jordan.l.justen@intel.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=359 Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> |
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| Guid | ||
| IndustryStandard | ||
| Library | ||
| Protocol | ||
| Register | ||
| OvmfPlatforms.h | ||