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2019-05-12efi_loader: comments for efi_install_fdt()Heinrich Schuchardt
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>
2019-05-12efi_loader: deduplicate code in cmd/bootefi.cHeinrich Schuchardt
Move duplicate initialization code to single instance. Adjust comments of concerned functions. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07efi_loader: clean up UEFI sub-system initializationHeinrich Schuchardt
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>
2019-05-02efi_loader: implement support of exit dataHeinrich Schuchardt
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>
2019-05-02efi_loader: set OsIndicationsSupported at initAKASHI Takahiro
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>
2019-04-23efi_loader: need either ACPI table or device treeHeinrich Schuchardt
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>
2019-04-23efi_loader: rework bootmgr/bootefi using load_image APIAKASHI Takahiro
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>
2019-04-23cmd: bootefi: carve out do_bootefi_image() from do_bootefi()AKASHI Takahiro
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>
2019-04-23cmd: bootefi: carve out bootmgr code from do_bootefi()AKASHI Takahiro
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>
2019-04-23cmd: bootefi: move do_bootefi_bootmgr_exec() forwardAKASHI Takahiro
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>
2019-04-23cmd: bootefi: carve out efi_selftest code from do_bootefi()AKASHI Takahiro
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>
2019-04-23cmd: bootefi: merge efi_install_fdt() and efi_process_fdt()AKASHI Takahiro
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>
2019-04-23cmd: bootefi: carve out fdt handling from do_bootefi()AKASHI Takahiro
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>
2019-04-23cmd: bootefi: rework set_load_options()AKASHI Takahiro
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>
2019-04-12Change FDT memory type from runtime data to boot services dataIlias Apalodimas
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>
2019-02-16efi_loader: clean up bootefi_test_prepare()Heinrich Schuchardt
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>
2019-02-16efi_loader: fix EFI entry countingHeinrich Schuchardt
`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>
2019-02-16efi_loader: use efi_start_image() for bootefiHeinrich Schuchardt
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>
2019-02-16efi_loader: set entry point in efi_load_pe()Heinrich Schuchardt
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>
2019-02-13efi_loader: refactor switch to non-secure modeHeinrich Schuchardt
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>
2019-02-13efi_loader: move efi_init_obj_list() to a new efi_setup.cAKASHI Takahiro
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>
2019-02-13efi_loader: avoid unnecessary pointer to long conversionHeinrich Schuchardt
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>
2019-02-13efi_loader: use named constant for efi_dp_from_mem()Heinrich Schuchardt
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>
2018-12-02efi_loader: create fdt reservation before copyHeinrich Schuchardt
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>
2018-12-02efi_loader: fix memory mapping for sandboxHeinrich Schuchardt
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>
2018-12-02efi_loader: macro efi_size_in_pages()Heinrich Schuchardt
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>
2018-12-02efi: Rename bootefi_test_finish() to bootefi_run_finish()Simon Glass
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>
2018-12-02efi: Create a function to set up for running EFI codeSimon Glass
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>
2018-12-02efi: Split out test init/uninit into functionsSimon Glass
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>
2018-12-02efi: Check for failure to create objects in selftestSimon Glass
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>
2018-12-02efi_loader: carving out memory reservationsHeinrich Schuchardt
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>
2018-12-02efi_loader: memory reservation for fdtHeinrich Schuchardt
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 17ff6f02f5ad ("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>
2018-12-02efi_loader: fix typosHeinrich Schuchardt
Fix typos in EFI subsystem comments. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-12-02efi_loader: add efi_dp_from_name()AKASHI Takahiro
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>
2018-12-02efi_loader: rename parent to headerHeinrich Schuchardt
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>
2018-12-02efi_loader: typedef struct efi_object *efi_handle_tHeinrich Schuchardt
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>
2018-10-16efi_loader: execute efi_save_gd() firstHeinrich Schuchardt
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 4e6b5d6503ce ("efi_loader: create root node") with DEBUG = 1. Fixes: 4e6b5d6503ce ("efi_loader: create root node") Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-09-23efi_loader: refactor efi_setup_loaded_image()Heinrich Schuchardt
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>
2018-09-23efi_loader: Fix loaded_image handle passing from EL3Alexander Graf
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 ea54ad59286 ("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: ea54ad59286 ("efi_loader: pass handle of loaded image") Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
2018-09-23efi_loader: create root nodeHeinrich Schuchardt
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>
2018-09-23efi_loader: memory leak in efi_set_bootdev()Heinrich Schuchardt
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>
2018-09-23efi_loader: do not use local variable for handleHeinrich Schuchardt
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>
2018-09-23efi_loader: buffer size for load optionsHeinrich Schuchardt
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>
2018-09-23efi: sandbox: Tidy up copy_fdt() to work with sandboxSimon Glass
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>
2018-09-23efi: Relocate FDT to 127MB instead of 128MBSimon Glass
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>
2018-07-25efi_loader: remove unused efi_get_time_init()Heinrich Schuchardt
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>
2018-07-25efi_loader: calculate crc32 for EFI tablesHeinrich Schuchardt
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>
2018-07-25efi: Drop error return in efi_carve_out_dt_rsv()Simon Glass
This function currently returns an error code, but never uses it. There is no function comment so it is not obvious why. Presuambly the error is not important. Update the function to explain its purpose and why it ignores the error. Drop the useful error return value. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-07-25efi: Tidy up device-tree-size calculation in copy_fdt()Simon Glass
This is a bit confusing at present since it adds 4KB to the pointer, then rounds it up. It looks like a bug, but is not. Move the 4KB addition into a separate statement and expand the comment. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-07-25efi_loader: Use map_sysmem() in bootefi commandAlexander Graf
The bootefi command gets a few addresses as values passed in. In sandbox, these values are in U-Boot address space, so we need to make sure we explicitly call map_sysmem() on them to be able to access them. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Alexander Graf <agraf@suse.de>
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