We currently have some inconsistent use of efi_add_memory_map()
throughout the code. In particular the return value of efi_add_memory_map()
is not interpreted the same way by various users in the codebase.
This patch does the following:
- Changes efi_add_memory_map() to return efi_status_t.
- Adds a method description to efi_add_memory_map().
- Changes efi_add_memory_map() to return EFI_SUCCESS
- Returns non-zero for error in efi_add_memory_map()
- Updates efi_allocate_pages() to new efi_add_memory_map()
- Updates efi_free_pages() to new efi_add_memory_map()
- Updates efi_carve_out_dt_rsv() to new efi_add_memory_map()
- Updates efi_add_runtime_mmio() to new efi_add_memory_map()
Fixes: 5d00995c36 ("efi_loader: Implement memory allocation and map")
Fixes: 74c16acce3 ("efi_loader: Don't allocate from memory holes")
Suggested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Alexander Graf <agraf@csgraf.de>
Signed-off-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Describe that efi_install_fdt() defaults to using the device tree
indicated by environment variable fdtcontroladdr.
ACPI tables and device trees are mutually exclusive.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
allow_unaligned(), switch_to_non_secure_mode(), and efi_init_obj_list() are
called in sequence in multiple places.
Move calls to allow_unaligned() and switch_to_non_secure_mode() to
efi_init_obj_list().
Remove unused includes.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
In case of a failure exit data may be passed to Exit() which in turn is
returned by StartImage().
Let the `bootefi` command print the exit data string in case of an error.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
UEFI variables should be installed using well-defined API.
Currently we don't support much, but the value of OsIndicationsSupported
will be updated once some features are added in the future.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Add comments. Rename a variable.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The EBBR specification prescribes that we should have either an ACPI table
or a device tree but not both. Let us enforce this condition in the
`bootefi` command.
If the bootefi command is called without a device tree parameter use a
previously device tree or fall back to the internal device tree.
The fdt unit test should not be run on boards with an ACPI table.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
In the current implementation, bootefi command and EFI boot manager
don't use load_image API, instead, use more primitive and internal
functions. This will introduce duplicated code and potentially
unknown bugs as well as inconsistent behaviours.
With this patch, do_efibootmgr() and do_boot_efi() are completely
overhauled and re-implemented using load_image API.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Use efi_root as parent handle for the loaded image.
LoadImage() should be called with BootPolicy = true by the boot manager.
Avoid duplicate free_pool().
Eliminate variable memdp which is not needed after anymore due to
"efi_loader: correctly split device path of loaded image".
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This is a preparatory patch for reworking do_bootefi() in later patch.
All the non-boot-manager-based (that is, bootefi <addr>) code is put
into one function, do_bootefi_image().
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This is a preparatory patch for reworking do_bootefi() in later patch.
do_bootmgr_exec() is renamed to do_efibootmgr() as we put all the necessary
code into this function.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This is a preparatory patch for reworking do_bootefi() in later patch.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This is a preparatory patch for reworking do_bootefi() in later patch.
Efi_selftest code is unusual in terms of execution path in do_bootefi(),
which make that function complicated and hard to understand. With this
patch, all efi_selftest related code will be put in a separate function.
The change also includes expanding efi_run_prepare() and efi_run_finish()
in do_bootefi_exec().
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This is a preparatory patch for reworking do_bootefi() in later patch.
For simplicity, merge two functions.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Return error code of efi_install_configuration_table() when aborting from
efi_install_fdt().
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This is a preparatory patch for reworking do_bootefi() in later patch.
Carve out a function to handle the installation of the device tree
as a configuration table in system table.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
set_load_options() can fail, so it should return error code to stop
invoking an image.
In addition, set_load_options() now takes a handle, instead of
loaded_image_info, to utilize efi_load_image() in a later patch.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Following Ard's suggestion:
Runtime data sections are intended for data that is used by the runtime
services implementation.
Let's change the type to EFI_BOOT_SERVICES_DATA.
This also fixes booting of armv7 using efi and fdtcontroladdr.
Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Free resources upon failure.
Correct the function description.
As there is no need for any special address in the dummy memory device
path passed via the EFI_LOADED_IMAGE_PROTOCOL simply use 0 as address.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
`bootefi selftest` fails on qemu-x86_defconfig if efi_selftest() is not
invoked using EFI_CALL().
Likewise we call the entry point of EFI payloads with
EFI_CALL(efi_start_image()).
entry_count indicates if we are in U-Boot (1) or in EFI payload code (0).
As we start in U-Boot code the initial value has to be 1.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Remove the duplicate code in efi_do_enter() and use efi_start_image() to
start the image invoked by the bootefi command.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Up to now efi_load_pe() returns the entry point or NULL in case of an
error. This does not allow to return correct error codes from LoadImage().
Let efi_load_pe() return a status code and fill in the entry point in the
corresponding field of the image object.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Refactor the switch from supervisor to hypervisor to a new function called
at the beginning of do_bootefi().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
The function, efi_init_obj_list(), can be shared in different pseudo efi
applications, like bootefi/bootmgr as well as my efishell. Moreover, it
will be utilized to extend efi initialization, for example, my "removable
disk support" patch and "capsule-on-disk support" patch in the future.
So with this patch, it will be moved to a new file, efi_setup.c, under
lib/efi_loader and exported, making no changes in functionality.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Remove lines deactivated by #if 1 #else
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
debug() support supports %p to print pointers.
The debug message is unique. So there is not need to write a possibly
distracting line number.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
When calling efi_dp_from_mem() use a named constant for the memory type.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
When copying the device we must ensure that the copy does not fall into a
memory area reserved by the same.
So let's change the sequence: first create memory reservations and then
copy the device tree.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
The sandbox is using a virtual address space which is neither the physical
address space of the operating system nor the virtual address space in
which Linux aplications live. The addresses used insided the flattened
device tree use this sandbox virtual address space. The EFI subsystem uses
the virtual address space of the operating system and this is where the fdt
is stored.
Fix all incorrect addresses for the fdt in cmd/bootefi.cmd.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
When allocating EFI memory pages the size in bytes has to be converted to
pages.
Provide a macro efi_size_in_pages() for this conversion.
Use it in the EFI subsystem and correct related comments.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This function can be used from do_bootefi_exec() so that we use mostly the
same code for a normal EFI application and an EFI test.
Rename the function and use it in both places.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
There is still duplicated code in efi_loader for tests and normal
operation.
Add a new bootefi_run_prepare() function which holds common code used to
set up U-Boot to run EFI code. Make use of this from the existing
bootefi_test_prepare() function, as well as do_bootefi_exec().
Also shorten a few variable names.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
The functions in bootefi are very long because they mix high-level code
and control with the low-level implementation. To help with this, create
functions which handle preparing for running the test and cleaning up
afterwards.
Also shorten the awfully long variable names here.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
At present a few error conditions are not checked. Before refactoring
this code, add some basic checks. Note that this code still leaks memory
in the event of error. This will be tackled after the refactor.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
The "Devicetree Specification 0.2" does not prescribe that memory
reservations must be EFI page aligned. So let's not make such an
assumption in our code.
Do not carve out the pages for the device tree. This memory area is
already marked as EFI_RUNTIME_SERVICES_DATA.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
In copy_fdt() we allocate EFI pages for the fdt plus extra 12 KiB as
EFI_RUNTIME_SERVICES_DATA. Afterwards in efi_install_fdt() we overwrite
part of this memory allocation by marking it as EFI_BOOT_SERVICES_DATA.
Remove the code marking the fdt as EFI_BOOT_SERVICES_DATA.
Cf. commit 17ff6f02f5 ("efi_loader: store DT in EFI_RUNTIME_SERVICES_DATA
memory")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Factor out efi_set_bootdev() and extract efi_dp_from_name().
This function will be used to set a boot device in efishell command.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Rename the component parent of some EFI objects to header. This avoids
misunderstandings.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
All our handles point to a struct efi_object. So let's define the
efi_handle_t accordingly. This helps us to discover coding errors much
more easily. This becomes evident by the corrections to the usage of
handles in this patch.
Rename variable image_handle to image_obj where applicable.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
If DEBUG is defined we may be calling EFI_CALL already during the
initialization of the EFI subsystem. We must make sure efi_save_gd() has
already been called at that moment.
Anyway it is better to have this call in one location instead of three.
This fixes an illegal memory access occurring since 4e6b5d6503
("efi_loader: create root node") with DEBUG = 1.
Fixes: 4e6b5d6503 ("efi_loader: create root node")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Create the handle of loaded images and the EFI_LOADED_IMAGE_PROTOCOL
inside efi_setup_loaded_image(). Do not use local variables.
Currently we expect the loaded image handle to point to the loaded image
protocol. Additionally we have appended private fields to the protocol.
With the patch the handle points to a loaded image object and the private
fields are added here. This matches how we handle the net and the gop
object.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
When running in EL3 mode on AArch64, we have to first drop to EL2
to execute a UEFI payload. When dropping down, the arguments to
the entry point have to stay identical to the ones for normal entry
though.
In commit ea54ad5928 ("efi_loader: pass handle of loaded image")
we incorrectly changed that logic and had the el3 entry path diverge.
Fix it up by syncing it back to what it's supposed to be.
Fixes: ea54ad5928 ("efi_loader: pass handle of loaded image")
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Currently we assign a lot of protocols to loaded images though
these protocols are not related to them. Instead they should be
installed on a separate handle. Via the device path it is the
parent to the devices like the network adapter.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
efi_set_bootdev() may be called repeatedly.
Free the memory allocated for device paths in previous calls.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Do not use a local variable for the handle backing the memory device path.
Adjust relate comments.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
The number of bytes in an utf-8 string is an upper limit for the number of
words in the equivalent utf-16 string. In so far the inumbant coding works
correctly. For non-ASCII characters the utf-16 string is shorter. With the
patch only the necessary buffer size is allocated for the load options.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
At present this function takes a pointer as its argument, then passes this
to efi_allocate_pages(), which actually takes an address. It uses casts,
which are not supported on sandbox.
Also the function calculates the FDT size rounded up to the neared EFI
page size, then its caller recalculates the size and adds a bit more to
it.
This function is much better written as something that works with
addresses only, and returns both the address and the size of the relocated
FDT.
Also, copy_fdt() returns NULL on error, but really should propagate the
error from efi_allocate_pages(). To do this it needs to return an
efi_status_t, not a void *.
Update the code in this way, so that it is easier to follow, and also
supports sandbox.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Sandbox only has 128MB of memory so we cannot relocate the device tree up
to start at 128MB. Use 127MB instead, which should be safe.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Remove unused function efi_get_time_init().
Initialization of the RTC has to be done in board bring up not in the EFI
subsystem.
There is no RTC device in the UEFI spec. The RTC is only accessed through
the runtime services.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
For the boot and runtime services tables and for the system table the
crc32 has to be set in the header.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
