El mié, 19 mar 2025 a las 5:48, Ilias Apalodimas (< ilias.apalodi...@linaro.org>) escribió:
> Hi Adriano, > > On Tue, 18 Mar 2025 at 15:23, Adriano Cordova <adria...@gmail.com> wrote: > > > > Next boot stages can acces an initrd via a handle with a specific device > > path and an EFI_LOAD_FILE2_PROTOCOL installed on it. In U-Boot, this > functionality > > is currently only implemented when booting with the EFI boot manager. > This series > > implements this functionality also for the bootm command when the os is > of EFI type, > > e.g. when booting FIT images with an EFI kernel. > > I'll have a look at the patches shortly. I have a question about the > entire series though. > > The initrd was plugged into the efi boot manager because it's easy to > configure entries of > kernel-initrd-dtb. The initrd can also be loaded by passing a kernel > command line parameter. > > That parameter can either be initrd=<file> with the limitation that > the initrd needs to be on the same filesystem as the kernel image. > On newer kernels you can also pass initrd=<device path>. I am not sure > what's the best option when loading the initrd for a FIT image. > > Thanks > /Ilias > Currently the initrd in FIT images with EFI os is completely ignored. It can't be passed as initrd=<file> because it is not a file, it is just memory mapped, and I am not sure if it can be passed as initrd=<device path> as I am not sure if the kernel expects a file system device path or if a memory device path would be picked up. In this series the functionality is added following what bootmgr already does, which also works for passing the initrd to a boot stage that understands EFI but not command line, but investigating the other way is also an option. Thanks, Adriano > > > > > > Adriano Cordova (3): > > efi_loader: efi_load_initrd: provide a memory mapped initrd > > efi_loader: binary_run: register an initrd > > bootm: add support for initrd in do_bootm_efi > > > > boot/bootm_os.c | 4 +- > > cmd/bootefi.c | 2 +- > > include/efi_loader.h | 4 +- > > lib/efi_loader/efi_bootbin.c | 20 +++++++-- > > lib/efi_loader/efi_bootmgr.c | 2 +- > > lib/efi_loader/efi_load_initrd.c | 71 +++++++++++++++++++++++++++----- > > 6 files changed, 84 insertions(+), 19 deletions(-) > > > > -- > > 2.48.1 > > >
