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Implement bulk of UEFI protocol needed by linux kernel #423

Merged
merged 11 commits into from
Nov 7, 2024
Merged

Implement bulk of UEFI protocol needed by linux kernel #423

merged 11 commits into from
Nov 7, 2024

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zhangxp1998
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  • Added boot service support, implemented common memory functions(allocate/free/get_memory_map), added stub for other functions so that kernel does not crash on call
  • Added Runtime service support, only implemented GetVariable/SetVariable, which are called by kernel to get secure boot status.
  • Some kernel images might requires relocation, so added relocation support: Load kernel into memory and patch relevant sections according to the relo data.
  • Linux Kernel assumes everything is identity mapped, hence anything reachable from the kernel must be identity mapped. This includes the kernel image, kernel stack, memories returned from boot service allocation, etc.

travisg
travisg requested changes Nov 4, 2024
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kernel/include/kernel/vm.h Outdated Show resolved Hide resolved
lib/uefi/boot_service_provider.cpp Outdated Show resolved Hide resolved
lib/uefi/boot_service_provider.cpp Outdated Show resolved Hide resolved
lib/uefi/boot_service_provider.cpp Outdated Show resolved Hide resolved
external/lib/heap/dlmalloc/rules.mk Show resolved Hide resolved
lib/uefi/boot_service_provider.cpp Outdated Show resolved Hide resolved
lib/uefi/boot_service_provider.cpp Outdated Show resolved Hide resolved
lib/uefi/switch_stack.S Outdated Show resolved Hide resolved
lib/uefi/switch_stack.S Outdated Show resolved Hide resolved
lib/uefi/switch_stack.S Show resolved Hide resolved
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travisg commented Nov 4, 2024

Looks generally pretty good, just a few changes (such as licenses, etc) and it's at least good enough to not bother other code upstream.

@zhangxp1998
[git] Ignore common linux build files, update README
6b903f4
@zhangxp1998
[app][uefi] Setup skeleton for UEFI boot service
5ea19f1
@zhangxp1998
[app][uefi] Imlement get_memory_map UEFI protocol
9fc4532
@zhangxp1998
[app][uefi] Add runtime service support
6a37823
@zhangxp1998
[app][uefi] Add relocation support for UEFI binary
253e309
@zhangxp1998
[app][uefi] Place linux kernel at identity mapped virtual memory addr…
347db09 
…esses
@zhangxp1998
[app][uefi] Call kernel at an identity mapped stack
763ff7c
@zhangxp1998
[app][uefi] Enable mspace feature on dlmalloc
7d77e28 
This allows us to use an identitiy mapped piece of memory as the heap
for UEFI app. UEFI app's allocation would go from this heap.
@zhangxp1998
[app][uefi] Add configuration table
1249e8a
@zhangxp1998
[app][uefi] Make allocate_pool return identity mapped memory
0d8a1ec
@zhangxp1998
Move UEFI header files into private include namespace
649d432 
This help reduce the risk of name collision. As MODULE_DIR/include is
automatically added to global includes.
travisg
travisg approved these changes Nov 7, 2024
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LGTM!

@travisg travisg merged commit afa5679 into littlekernel:master Nov 7, 2024
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@travisg travisg travisg approved these changes

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@zhangxp1998 @travisg