Add basic UEFI support to LittleKernel #409
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Clang linker would remove apps section even though variable insied it are marked as "used". Per clang doc, we need to add "retain" attribute to prevent section gc. Bug: 294283461 Test: th Change-Id: I5fc0aee885a419f314de811a2cf92b77af230c0c
Thids adds a uefi_load <block dev name> command, which will parse the PE header and do some basic validation checks. Bug: 294283461 Test: uefi_load virtio0 Change-Id: I97393652526bda5be1b995e59647e239c64d31d6
These headers define the API boundary between UEFI loader and UEFI applications. Test: th Bug: 294283461 Change-Id: Idf064563bb033a8bf2b994261bcd77c0ed7aa2d8
This loads all sections specified by PE header at the correct memory location, and executes the entry point function. Only the OutputString function of text output protocol is implemented, so the only application we can run is hello world. Test: th Bug: 294283461 Change-Id: I786bc8b7db9e1c0a6019b8fe4ba5a8c8ab4f2936
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