[gbl] Implement GBL EFI Boot Memory protocol
Implement GblEfiBootMemoryProtocol to provide kernel and FDT boot
buffers to GBL based on U-Boot environment variables ('loadaddr',
'loadsize', 'fdtaddr').
To ensure safety against dynamic memory allocations in GBL, reserve
the kernel and FDT memory ranges in the EFI memory map (as
EFI_BOOT_SERVICES_DATA) immediately upon protocol registration,
preventing UEFI page allocation overlap. Also validate that environment
variables have not changed when GBL queries get_boot_buffer.
TAG=agy
CONV=236c2e4e-69e4-48b6-a8ea-8986bc68bb04
Change-Id: Icb61b5618c0697a7fde25e44212cca4451f87c04
Reviewed-on: https://turquoise-internal-review.googlesource.com/c/third_party/u-boot/+/1370272
Commit-Queue: Sergii Parubochyi <sergiip@google.com>
Reviewed-by: David Pursell <dpursell@google.com>
GitOrigin-RevId: 51dd525ff405e606538780047562b3bf488ea55e
This is a version of u-boot, modified to support Fuchsia on the Khadas vim3
To build the vim3 bootloader for Fuchsia:
CIPD access. All build tools are downloaded to cipd_deps.
Run the build script from repo root
./fuchsia_build.py
Options:
--clean-cipd option can be used to make sure CIPD checkout is clean. It will remove cipd_deps directory and download dependencies again.--gbl-path <path> option specifies a path to a local GBL (gbl.efi) binary. If provided, CIPD GBL is not used; otherwise, the script downloads GBL from CIPD and uses gbl_aarch64_dev.efi.You now have a build/u-boot.bin.unsigned that you can flash to a target using fastboot.
go/fuchsia-firmware-licensing-publishing