u-boot.git/lib/efi, branch v2022.04

doc: replace @return by Return:

2022-01-19T17:11:34+00:00

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-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

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: Show when allocated pages are used

2021-12-31T06:02:06+00:00

Add a message here so that both paths of memory allocation are reported.

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

efi: Check for failure when initing the app

2021-12-31T05:50:40+00:00

The stub checks for failure with efi_init(). Add this for the app as well.
It is unlikely that anything can be done, but we may as well stop.

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 a few comments to the stub

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

Comment some functions that need more information.

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: Add a way to obtain boot services in the app

2021-11-07T17:36:55+00:00

Add a function to return this information along with a stub for the
efi_info_get() function, since calling it otherwise hangs U-Boot.

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

x86: Don't duplicate global_ptr in 64-bit EFI app

2021-11-07T17:36:55+00:00

This variable is already defined by the EFI code. Drop the duplicate
definition when building a 64-bit EFI app.

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