These functions can be used with struct lmb pointers and will be used to
manage IOVA space in the apple_dart iommu driver. This restores part of
the pointer base struct lmb API from before commit ed17a33fed29 ("lmb:
make LMB memory map persistent and global").
io_lmb_add() and io_lmb_free() can trivially reuse exisiting lmb
functions. io_lmb_setup() is separate for unique error log messages.
io_lmb_alloc() is a simplified copy of _lmb_alloc_base() since the
later has unused features and internal use of the global LMB memory map.

Signed-off-by: Janne Grunau <j@jannau.net>

Low lovel LMB functionality will be used to manage IOVA space in the
Apple dart iommu driver. This reordering ensures that those function
can not access the global LMB memory map variable.

Signed-off-by: Janne Grunau <j@jannau.net>

It will be re-used with a lmb list pointer as argument for IOVA
allocations in the apple_dart iommu driver.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Janne Grunau <j@jannau.net>

Rather than returning 0, just return an error, since sandbox is not used
with PXE at present.

Signed-off-by: Simon Glass <sjg@chromium.org>

When the --native flag is given, pretend to be running the host
architecture rather than sandbox.

Allow the same control for PXE too.

Signed-off-by: Simon Glass <sjg@chromium.org>

Move this function from the EFI bootmeth to the common efi_helper file.
No functional change is intended.

Signed-off-by: Simon Glass <sjg@chromium.org>

Use a function to obtain the device EFI filename, so that we can control
how sandbox behaves.

Signed-off-by: Simon Glass <sjg@chromium.org>

Add a simple app to use for testing. This is intended to do whatever it
needs to for testing purposes. For now it just prints a message and
exits boot services.

There was a considerable amount of discussion about whether it is OK to
call exit-boot-services and then return to U-Boot. This is not normally
done in a real application, since exit-boot-services is used to
completely disconnect from U-Boot. For now, this part is skipped.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

All call sites are using size rather than end addresses,
so instead - as previously done - calculating an end address
everywhere, just modify the function to use size and internally
calculate the end address

Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Patrick Wildt <pwildt@google.com>
Signed-off-by: Moritz Fischer <moritzf@google.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

There is already a defined stack-size which is used to reserve space for
the stack. It is confusing to add more in the lmb module, since then the
memory map (with meminfo command) seems to have a hole in it.

Drop this unnecessary feature.

Signed-off-by: Simon Glass <sjg@chromium.org>