u-boot.git/include/efi.h, branch v2022.04

efi: Tidy up some comments in efi header

2022-01-15T09:57:22+00:00

Document the return value in efi_init(). Fix up @sizep in efi_info_get().
Use Return: instead of @return

Signed-off-by: Simon Glass 
Reviewed-by: Heinrich Schuchardt

efi: Support the efi command in the app

2022-01-15T09:57:22+00:00

At present the 'efi' command only works in the EFI payload. Update it to
work in the app too, so the memory map can be examined.

Signed-off-by: Simon Glass 
Signed-off-by: Heinrich Schuchardt

x86: efi: Update efi_get_next_mem_desc() to avoid needing a map

2022-01-15T09:57:22+00:00

At present this function requires a pointer to struct efi_entry_memmap
but the only field used in there is the desc_size. We want to be able
to use it from the app, so update it to use desc_size directly.

Signed-off-by: Simon Glass

efi: Move exit_boot_services into a function

2022-01-15T09:57:22+00:00

At present this code is inline in the app and stub. But they do the same
thing. The difference is that the stub does it immediately and the app
doesn't want to do it until the end (when it boots a kernel) or not at
all, if returning to UEFI.

Move it into a function so it can be called as needed.

Add a comment showing how to store the memory map so that it can be
accessed within the app if needed, for debugging purposes only. The map
can change without notice.

Signed-off-by: Simon Glass

efi: Mention that efi_info_get() is only used in the stub

2021-12-31T05:59:37+00:00

This provides access to EFI tables after U-Boot has exited boot services.
It is not needed in the app since boot services remain alive and we can
just call them whenever needed.

Add a comment to explain this.

Signed-off-by: Simon Glass 
Reviewed-by: Heinrich Schuchardt

efi: Share struct efi_priv between the app and stub code

2021-12-31T05:45:01+00:00

At present each of these has its own static variable and helper functions.
Move them into a shared file.

Signed-off-by: Simon Glass 
Reviewed-by: Heinrich Schuchardt

efi: Add comments to struct efi_priv

2021-12-31T05:45:01+00:00

This structure is uncommented. Fix it.

Signed-off-by: Simon Glass

efi: Drop device_path from struct efi_priv

2021-12-31T05:45:01+00:00

This is not used anywhere drop it.

Signed-off-by: Simon Glass 
Reviewed-by: Heinrich Schuchardt

efi: Locate all block devices in the app

2021-12-31T05:45:01+00:00

When starting the app, locate all block devices and make them available
to U-Boot. This allows listing partitions and accessing files in
filesystems.

EFI also has the concept of 'disks', meaning boot media. For now, this
is not obviously useful in U-Boot, but add code to at least locate these.
This can be expanded later as needed.

We cannot use printf() in the early stub or app since it is not compiled
in

Signed-off-by: Simon Glass 
Reviewed-by: Heinrich Schuchardt

efi: fix typo in description of struct efi_entry_hdr

2021-12-31T05:44:26+00:00

Add missing colon.

Signed-off-by: Heinrich Schuchardt