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path: root/lib/efi_loader
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2018-01-22efi_loader: open_info in OpenProtocolHeinrich Schuchardt
efi_open_protocol has to keep track of opened protocols. OpenProtocol enters the agent and controller handle information into this list. A unit test is supplied with a subsequent patch. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22efi_loader: list of open protocol infosHeinrich Schuchardt
Add a list of open protocol infos to each protocol of a handle. Provide helper functions to access the list items. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22efi_loader: simplify efi_remove_all_protocolsHeinrich Schuchardt
Replace list_for_each_safe() and list_entry() by list_for_each_entry_safe(). Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22efi_loader: correctly call imagesHeinrich Schuchardt
Avoid a failed assertion when an EFI app calls an EFI app. Avoid that the indent level increases when calling 'bootefi hello' repeatedly. Avoid negative indent level when an EFI app calls an EFI app that calls an EFI app (e.g. iPXE loads grub which starts the kernel). Return the status code of a loaded image that returns without calling the Exit boot service. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22efi_loader: text output for device path end nodeHeinrich Schuchardt
Without the patch a device path consisting only of an end node is displayed as '/UNKNOWN(007f,00ff)'. It should be displayed as '/'. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22efi_loader: use correct format string for unsigned longHeinrich Schuchardt
virt_size is of type unsigned long. So it should be printed with %ul. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22efi_loader: add comments to memory functionsHeinrich Schuchardt
Add comments describing memory functions. Fix the formatting of a function declaration. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22efi_loader: use wide string do define firmware vendorHeinrich Schuchardt
As the U-Boot is compiled with -fshort-wchar we can define the firmware vendor constant as wide string. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22efi_loader: support device path for IDE and SCSI disksHeinrich Schuchardt
Correctly create the device path for IDE and SCSI disks. Support for SATA remains to be done in a future patch. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-22efi_loader: create full device path for block devicesHeinrich Schuchardt
When creating the device path of a block device it has to comprise the block device itself and should not end at its parent. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-19efi_loader: Setup logical_partition media informationEmmanuel Vadot
When adding a partition, set the logical_partition member in the media structure as mandated by the UEFI spec. Signed-off-by: Emmanuel Vadot <manu@freebsd.org> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2017-12-16efi_loader: comments for dp_part_fill()Heinrich Schuchardt
Add a description for dp_part_fill(). Reword a comment in the function. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-16efi_loader: correct DeviceNodeToText for media typesHeinrich Schuchardt
When converting device nodes and paths to text we should stick to the UEFI spec. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-16efi_loader: correctly setup device paths for block devicesHeinrich Schuchardt
According to the UEFI spec the numbering of partitions has to start with 1. Partion number 0 is reserved for the optional device path for the complete block device. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-16efi_loader: correctly determine if an MMC device is an SD-cardHeinrich Schuchardt
The SD cards and eMMC devices have different device nodes. The current coding interpretes all MMC devices as eMMC. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-16efi_loader: error handling in efi_load_image()Heinrich Schuchardt
If a failure occurs when trying to load an image, it is insufficient to free() the EFI object. We must remove it from the object list, too. Otherwise a use after free will occur the next time we iterate over the object list. Furthermore errors in setting up the image should be handled. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-16efi_loader: new function efi_delete_handle()Heinrich Schuchardt
Provide a function to remove a handle from the object list after removing all protocols. To avoid forward declarations other functions have to move up in the coding. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-16efi_loader: return status from efi_setup_loaded_image()Heinrich Schuchardt
efi_setup_loaded_image() should return an error code indicating if an error has occurred. An error occurs if a protocol cannot be installed. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-16efi_loader: Ensure efi_dp_find_obj() finds exact matchesAlexander Graf
When calling efi_dp_find_obj(), we usually want to find the *exact* match of an object for a given device path. However, I ran into a nasty corner case where I had the following objects with paths available: Handle 0x9feffa70 /HardwareVendor(e61d73b9-a384-4acc-aeab-82e828f3628b)[0: ]/USB(6,0)/EndEntire Handle 0x9feffb58 /HardwareVendor(e61d73b9-a384-4acc-aeab-82e828f3628b)[0: ]/USB(6,0)/HD(1,800,32000,2de808cb00000000,1,1)/EndEntire and was searching for /HardwareVendor(e61d73b9-a384-4acc-aeab-82e828f3628b)[0: ]/USB(6,0)/HD(1,800,32000,2de808cb00000000,1,1)/EndEntire But because our device path search looked for any substring match, it would return /HardwareVendor(e61d73b9-a384-4acc-aeab-82e828f3628b)[0: ]/USB(6,0)/EndEntire because that path is a full substring of the path we were searching for. So this patch adapts the device path search logic to always look for exact matches first. The way we distinguish between those cases is by looking at whether our caller actually deals with remainders. As a side effect, the code as is from all I can tell now never does a substring match anymore, because it always gets called with rem=NULL, so we always only do exact matches now. Reported-by: Jonathan Gray <jsg@jsg.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-16efi_loader: helloworld.c: Explicitly use .rodata for loaded_image_guidAlexander Graf
Commit bbf75dd9345d0b ("efi_loader: output load options in helloworld") introduced a const variable in efi_main() called loaded_image_guid which got populated from a constant struct. While you would usually expect a compiler to realize that this variable should really just be a global pointer to .rodata, gcc disagrees and instead puts it on the stack. Unfortunately in some implementations of gcc it does so my calling memcpy() which we do not implement in our hello world environment. So let's explicitly move it to a global variable which in turn puts it in .rodata reliably and gets rid of the memcpy(). Fixes: bbf75dd9345d0b ("efi_loader: output load options in helloworld") Reported-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Tested-by: Florian Fainelli <f.fainelli@gmail.com>
2017-12-01efi_loader helloworld.efi: Fix building with -OsAlexander Graf
Depending on your compiler, when compiling the hello world efi binary with -Os, gcc might think it's a smart idea to replace common patterns such as memory copies with explicit calls to memcpy(). While that sounds great at first, we don't have any memcpy() available in our helloworld build target. So let's indicate to gcc that we really do want to have the code be built as freestanding. Fixes: bbf75dd9 ("efi_loader: output load options in helloworld") Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: Fix partition offsetsAlexander Graf
Commit 884bcf6f65 (efi_loader: use proper device-paths for partitions) tried to introduce the el torito scheme to all partition table types: Spawn individual disk objects for each partition on a disk. Unfortunately, that code ended up creating partitions with offset=0 which meant that anyone accessing these objects gets data from the raw block device instead of the partition. Furthermore, all the el torito logic to spawn devices for partitions was duplicated. So let's merge the two code paths and give partition disk objects good offsets to work from, so that payloads can actually make use of them. Fixes: 884bcf6f65 (efi_loader: use proper device-paths for partitions) Reported-by: Yousaf Kaukab <yousaf.kaukab@suse.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: add missing breaksRob Clark
Otherwise with GUID partition types you would end up with things like: .../HD(Part0,Sig6252c819-4624-4995-8d16-abc9cd5d4130)/HD(Part0,MBRType=02,SigType=02) Signed-off-by: Rob Clark <robdclark@gmail.com> [agraf: rebased] Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: comments for EFI_DEVICE_PATH_TO_TEXT_PROTOCOLHeinrich Schuchardt
Provide comments for efi_convert_device_node_to_text() and efi_convert_device_path_to_text(). Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: helper function to add EFI object to listHeinrich Schuchardt
To avoid duplicate coding provide a helper function that initializes an EFI object and adds it to the EFI object list. efi_exit() is the only place where we dereference a handle to obtain a protocol interface. Add a comment to the function. Suggested-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: pass handle of loaded imageHeinrich Schuchardt
The handle of a loaded image is the value of the handle member of the loaded image info object and not the address of the loaded image info. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: output load options in helloworldHeinrich Schuchardt
We need to test if we pass a valid image handle when loading and EFI application. This cannot be done in efi_selftest as it is not loaded as an image. So let's enhance helloworld a bit. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: manage protocols in a linked listHeinrich Schuchardt
Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: simplify find_objHeinrich Schuchardt
Use function efi_search_protocol(). Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: simplify efi_open_protocolHeinrich Schuchardt
Use function efi_search_protocol. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: efi_gop: use efi_add_protocolHeinrich Schuchardt
Use efi_add_protocol to add protocol. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: efi_net: use efi_add_protocolHeinrich Schuchardt
Use efi_add_protocol to add protocols. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: efi_disk: use efi_add_protocolHeinrich Schuchardt
Use efi_add_protocol to install protocols. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: reimplement LocateDevicePathHeinrich Schuchardt
The current implementation of efi_locate_device_path does not match the UEFI specification. It completely ignores the protocol parameters. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: fix efi_convert_device_node_to_textHeinrich Schuchardt
We need to implement to different functions for the EFI_DEVICE_PATH_TO_TEXT_PROTOCOL: ConvertDeviceNodeToText ConvertDevicePathToText A recent patch screwed up efi_convert_device_node_to_text to expect a device path and not a node. The patch makes both service functions work again. efi_convert_device_node_to_text is renamed to efi_convert_single_device_node_to_text and efi_convert_device_node_to_text_ext is renamed to efi_convert_device_node_to_text to avoid future confusion. A test of ConvertDeviceNodeToText will be provided in a follow-up patch. Fixes: adae4313cdd efi_loader: flesh out device-path to text Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: efi_dp_str should print path not nodeHeinrich Schuchardt
efi_dp_str is meant to print a device path and not a device node. The old coding only worked because efi_convert_device_node_to_text was screwed up to expect paths instead of nodes. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: size of media device path node represenationHeinrich Schuchardt
In the format specifier we want to specify the maximum width in case an ending \0 is missing. So slen must be used as precision and not as field width. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: helloworld.c: remove superfluous includeHeinrich Schuchardt
Remove a superfluous include from helloworld.c Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: initialise partition_signature memoryJonathan Gray
Zero partition_signature in the efi_device_path_hard_drive_path structure when signature_type is 0 (no signature) as required by the UEFI specification. This is required so that efi_dp_match() will work as expected when doing memcmp() comparisons. Previously uninitialised memory would cause it not match nodes when it should have when the signature type was not GUID. Corrects a problem where the loaded image protocol would not return a device path with MEDIA_DEVICE causing the OpenBSD bootloader to fail on rpi_3 and other targets. v2: Also handle signature_type 1 (MBR) as described in the specification Signed-off-by: Jonathan Gray <jsg@jsg.id.au> Tested-by: Artturi Alm <artturi.alm@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: efi_console: use helper functionsHeinrich Schuchardt
Use helper functions efi_created_handle and efi_add_protocol for creating the console handles and instaling the respective protocols. This change is needed if we want to move from an array of protocols to a linked list of protocols. Eliminate EFI_PROTOCOL_OBJECT which is not used anymore. Currently we have not defined protocol interfaces to be const. So efi_con_out and efi_console_control cannot be defined as const. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: refactor efi_setup_loaded_imageHeinrich Schuchardt
Use helper functions to add protocols. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: simplify efi_locate_protocolHeinrich Schuchardt
Use helper function efi_search_protocol. Do not print protocol guid twice in debug mode. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: simplify efi_uninstall_protocol_interfaceHeinrich Schuchardt
Use function efi_search_obj, efi_search_protocol and efi_remove_protocol to simplify the coding. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: simplify efi_searchHeinrich Schuchardt
Use helper function efi_search_protocol in efi_search. Add missing comments. Put default handling into default branch of switch statement. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: simplify efi_install_protocol_interfaceHeinrich Schuchardt
Use helper functio efi_add_protocol. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: helper functions for protocol managementHeinrich Schuchardt
This patch provides helper functions to manage protocols. efi_search_protocol - find a protocol on a handle efi_add_protocol - install a protocol on a handle efi_remove_protocol - remove a protocol from a handle efi_remove_all_protocols - remove all protocols from a handle Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: efi_gop: use correct types for parametersHeinrich Schuchardt
Use efi_uintn_t instead of unsigned long. EFI_GRAPHICS_OUTPUT_BLT_OPERATION is an enum. If we don't define an enum we have to pass it as u32. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: argument of efi_search_obj should be constHeinrich Schuchardt
The argument of efi_search_obj is not changed so it should be marked as const. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: make efi_create_handle non-staticHeinrich Schuchardt
Export function efi_create_handle. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01efi_loader: efi_dp_match should have const argumentsHeinrich Schuchardt
efi_dp_match does not change its arguments. So they should be marked as const. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
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