u-boot.git/lib/efi_loader, branch v2025.04-rc5

lmb: change the return code on lmb_alloc_addr()

2025-03-24T17:12:33Z

Ben reports a failure to boot the kernel on hardware that starts its physical memory from 0x0. The reason is that lmb_alloc_addr(), which is supposed to reserve a specific address, takes the address as the first argument, but then also returns the address for success or failure and treats 0 as a failure. Since we already know the address change the prototype to return an int. Reported-by: Ben Schneider Signed-off-by: Ilias Apalodimas Tested-by: Ben Schneider Reviewed-by: Sughosh Ganu

efi_loader: Move .dynamic out of .text in EFI

2025-03-17T08:22:06Z

EFI applications need to be relocatable. Ordinarily, this is achieved through a PE-format .reloc section, but since that requires toolchain tricks to achieve, U-Boot's EFI applications instead embed ELF-flavored relocation information and use it for self-relocation; thus, the .dynamic section needs to be preserved. Before this patch, it was tacked on to the end of .text, but this was not proper: A .text section is SHT_PROGBITS, while the .dynamic section is SHT_DYNAMIC. Attempting to combine them like this creates a section type mismatch. While GNU ld doesn't seem to complain, LLVM's lld considers this a fatal linking error. This patch moves .dynamic out to its own section, so that the output ELF has the correct types. (They're all mashed together when converting to binary anyway, so this patch causes no change in the final .efi output.) Signed-off-by: Sam Edwards Cc: Heinrich Schuchardt

efi_loader: efi_net: let efi_net_set_dp properly update the device path

2025-02-28T14:25:30Z

This commit fixes an use after free introduced in Commit e55a4acb54 (" efi_loader: net: set EFI bootdevice device path to HTTP when loaded from wget"). The logic in efi_net_set_dp is reworked so that when the function is invoked it not only changes the value of the static variable net_dp (this is how the function was implemented in e55a4acb54) but also updates the protocol interface of the device path protocol in case efi has started. Fixes: e55a4acb54e8 ("efi_loader: net: set EFI bootdevice device path to HTTP when loaded from wget") Signed-off-by: Adriano Cordova

efi_loader: make efi_add_memory_map_pg() static

2025-02-20T10:09:33Z

The function is only used in the efi_memory.c module. Reviewed-by: Ilias Apalodimas Signed-off-by: Heinrich Schuchardt

lmb: move lmb_map_update_notify() to EFI

2025-02-20T10:09:33Z

When building with qemu_arm64_defconfig with CONFIG_CC_OPTIMIZE_FOR_DEBUG=y and CONFIG_EFI_LOADER=n an error undefined reference to efi_add_memory_map_pg occurs. Move the EFI dependent part of lmb_map_update_notify() to the EFI sub-system. Reported-by: Liya Huang <1425075683@qq.com> Acked-by: Liya Huang <1425075683@qq.com> Signed-off-by: Heinrich Schuchardt

efi_loader: remove comparisons to string literals from runtime

2025-02-20T08:22:53Z

For EFI runtime services, we manage to preserve string literals by placing the .efi_runtime section just before .data and preserving it when marking the runtime memory by marking surrounding boottime code as runtime. This is ok for now but will break if we update any linker scripts and decouple .text and .runtime sections. So let's define the strings we used to compare in the appropriate section for runtime services Signed-off-by: Ilias Apalodimas Reviewed-by: Mark Kettenis

efi_loader: Fix potential deref-after-null

2025-02-20T08:04:12Z

After having been compared to a NULL value at efi_disk.c:426, pointer 'part_info' is dereferenced at efi_disk.c:534. Signed-off-by: Maks Mishin Reviewed-by: Heinrich Schuchardt

tcg2: decouple eventlog size from efi

2025-01-28T06:59:23Z

Move default eventlog size from efi to tpm for using in both efi and measured boot. Signed-off-by: Raymond Mao Reviewed-by: Ilias Apalodimas Signed-off-by: Ilias Apalodimas

bootmeth_efi: Support PXE booting

2025-01-26T10:06:57Z

Finish off the implementation so it is possible to boot an EFI app over a network. Signed-off-by: Simon Glass

efi_loader: Pass in the required parameters from EFI bootmeth

2025-01-26T10:06:57Z

Rather than setting up the global variables and then making the call, pass them into function directly. This cleans up the code and makes it all a bit easier to understand. Signed-off-by: Simon Glass