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Every SetVariable() call triggers efi_var_mem_ins() followed by
efi_var_to_storage(), even when the variable value is not actually
changing. This is unfriendly to flash-backed stores that suffer
wear from unnecessary erase/write cycles.
Add a change-detection path to efi_var_mem_ins(): when size2 == 0
(i.e. not an append) and the caller passes a non-NULL changep flag,
look up the existing variable and compare attributes, length, time
and data byte-by-byte. If everything matches, set *changep = false
and return EFI_SUCCESS without touching the variable buffer.
Both efi_set_variable_int() and efi_set_variable_runtime() now
check the flag and skip efi_var_mem_del() / efi_var_to_storage()
when nothing changed.
Introduce efi_memcmp_runtime() - a runtime-safe byte-by-byte memory
comparison helper, following the same pattern as the existing
efi_memcpy_runtime(). The standard memcmp() is not available after
ExitBootServices() and calling it from Linux will crash.
Tested-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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Export the ECPT GUID, to prepare accessing it from more than one location.
The C file containing the GUID is compiled only when CONFIG_EFI_ECPT is
set; gate the export accordingly.
Signed-off-by: Vincent Stehlé <[email protected]>
Cc: Heinrich Schuchardt <[email protected]>
Cc: Ilias Apalodimas <[email protected]>
Cc: Tom Rini <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
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This commit adds the functionality of generate EFI_DEBUG_IMAGE_INFO
while loading the image.
This feature is described in UEFI Spec 2.10. Section 18.4.3.
The implementation ensures support for hardware-assisted debugging and
provides a standardized mechanism for debuggers to discover the load
address of an EFI application.
Cc: Ilias Apalodimas <[email protected]>
Cc: Peter Robinson <[email protected]>
Cc: Simon Glass <[email protected]>
Signed-off-by: Ying-Chun Liu (PaulLiu) <[email protected]>
Tested-by: Heinrich Schuchardt <[email protected]>
Acked-by: Ilias Apalodimas <[email protected]>
Signed-off-by: Ilias Apalodimas <[email protected]>
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Add efi_realloc() for realloc memory that previously alloc by efi_alloc().
Note that if realloced memory is explicitly allocated as BootServicesData.
Cc: Heinrich Schuchardt <[email protected]>
Cc: Ilias Apalodimas <[email protected]>
Cc: Peter Robinson <[email protected]>
Cc: Simon Glass <[email protected]>
Signed-off-by: Ying-Chun Liu (PaulLiu) <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
Signed-off-by: Ilias Apalodimas <[email protected]>
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EFI_DEBUG_IMAGE_INFO_TABLE is used to store EFI_LOADED_IMAGE for
debug purpose. This commit adds the table to the EFI_CONFIGURATION_TABLE.
This feature is described in UEFI Spec version 2.10. Section 18.4.
The implementation ensures support for hardware-assisted debugging and
provides a standardized mechanism for debuggers to discover and interact
with system-level debug resources.
Cc: Heinrich Schuchardt <[email protected]>
Cc: Peter Robinson <[email protected]>
Cc: Simon Glass <[email protected]>
Signed-off-by: Ying-Chun Liu (PaulLiu) <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
Signed-off-by: Ilias Apalodimas <[email protected]>
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Add EFI_SYSTEM_TABLE_POINTER structure for remote debugger to locate
the address of EFI_SYSTEM_TABLE.
This feature is described in UEFI SPEC version 2.10. Section 18.4.2.
The implementation ensures support for hardware-assisted debugging and
provides a standardized mechanism for debuggers to discover the EFI
system table.
Cc: Peter Robinson <[email protected]>
Cc: Simon Glass <[email protected]>
Signed-off-by: Ying-Chun Liu (PaulLiu) <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
Tested-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]> # change memset(systab_pointer, 0 ...) -> systab_pointer->crc32 = 0;
Signed-off-by: Ilias Apalodimas <[email protected]>
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Tom Rini <[email protected]> says:
Hey all,
Related to my other series I've posted recently on cleaning up some
headers, this series here is the result of at least lightly auditing the
#includes used in include/[a-m]*.h. This ignores subdirectories, as at
least in part I think the top-level includes we've constructed are the
most likely places to have some extra transitive include paths. I'm sure
there's exceptions and I'll likely audit deeper once this first pass is
done. This only gets as far as "include/m*.h" because I didn't want this
to get too big. This also sets aside <miiphy.h> and <phy.h>. While
miiphy.h does not directly need <phy.h> there are *so* many users and I
think I had half of the tree just about not building when I first tried.
It might be worth further investigation, but it might just be OK as-is.
Link: https://lore.kernel.org/r/[email protected]
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In include/efi_loader.h we do not directly need <log.h>, <part_efi.h>,
<pe.h> nor <linux/oid_registry.h> so remove them. In include/efi_tcg2.h
we make use of <part_efi.h> but did not include it, so add it directly.
Reviewed-by: Ilias Apalodimas <[email protected]>
Tested-by: Ilias Apalodimas <[email protected]>
Signed-off-by: Tom Rini <[email protected]>
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These functions are useful for the EFI app. As a first step towards
making these available outside lib/efi_loader, create a separate header
file and include it where needed. Add proper comments to the functions,
since many are missing at present.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
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We don't want ANSI escape-sequences written in tests since it is a pain
to check the output with ut_assert_nextline() et al.
Provide a way to tests to request that these characters not be sent.
Add a proper function comment while we are here, to encourage others.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
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Do not try to create an initrd device path nor try to register
an initrd with the EFI_LOAD_FILE2_PROTOCOL if none is provided.
Handle initrd installation in efi_binary_run_dp with
efi_install_initrd, imitating what is done for the fdt.
Fixes: 36835a9105c ("efi_loader: binary_run: register an initrd")
Reported-by: Weizhao Ouyang <[email protected]>
Signed-off-by: Adriano Cordova <[email protected]>
Tested-by: Weizhao Ouyang <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
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Add support to install an initrd when running an EFI binary
with efi_binary_run
Signed-off-by: Adriano Cordova <[email protected]>
Acked-by: Ilias Apalodimas <[email protected]>
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U-Boot can pass an initrd to subsequent boot stages via the
EFI_LOAD_FILE2_PROTOCOL. The current implementation only supports
this functionality via the efi boot manager: the initrd is taken
from the load options of the BootCurrent variable. This commit adds
support for registering a memory mapped initrd, e.g. loaded from a
FIT image. For now this new method takes precedence over loading the
initrd from the BootCurrent variable (if both are present) because
the BootCurrent variable is not cleared on exiting the boot manager.
Signed-off-by: Adriano Cordova <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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With upcoming changes supporting pmem nodes, we need to remove the
pmem area from the EFI memory map. Rename efi_add_memory_map_pg() to
efi_update_memory_map(), and allow removing memory from the EFI memory
map.
Signed-off-by: Sughosh Ganu <[email protected]>
Signed-off-by: Ilias Apalodimas <[email protected]>
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Structure jmp_buf_data provides the underlying format of jmp_buf, which
we actually don't care about. Clean up existing code to use the standard
jmp_buf type. This introduces no functional change.
Signed-off-by: Yao Zi <[email protected]>
Reviewed-by: Jerome Forissier <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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Add support for multiple efi_net_obj structs in efi_net.c. This comes
in preparation for an EFI network driver supporting multiple network
interfaces. For now the EFI network stack still registers a single ethernet
udevice as an EFI network device even if multiple are present, namely
the one that was the current device at the moment of EFI initialization.
Signed-off-by: Adriano Cordova <[email protected]>
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In preparation to support mutiple efi net udevices. Add a device path
cache to support device paths from multiple ethernet udevices.
The device paths can be added to the cache before EFI gets initialized and
the protocols get installed.
Signed-off-by: Adriano Cordova <[email protected]>
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In preparation to support multiple EFI net objects, support
constructing device paths using an ethernet device different
than the default. Add a udevice argument to the device path
generation, and keep the callsites with eth_get_dev() to
preserve existing functionality.
Signed-off-by: Adriano Cordova <[email protected]>
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This gets called each time a payload is to get executed by bootefi.
For now this only updates the PXE IP address.
Signed-off-by: Adriano Cordova <[email protected]>
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The following symbols are exposed:
- efi_reinstall_protocol_interface
This is done so that the device path protocol interface
of the network device can be changed internally by u-boot
when a new bootfile gets downloaded.
- eth_set_dev
To support multiple network udevices
- efi_close_event
This comes in preparation to support unregistering
an EFI network device from the EFI network stack when
the underlying U-boot device gets removed
- efi_[dis]connect_controller
The EFI network driver uses ConnectController to add a
NIC to the EFI network stack.
- efi_uninstall_protocol_interface
connect_controler for the efi network driver can install
protocols, which need to be uninstalled in disconnect_controller
- EFI_SIMPLE_NETWORK_PROTOCOL_GUID
Signed-off-by: Adriano Cordova <[email protected]>
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The function is only used in the efi_memory.c module.
Reviewed-by: Ilias Apalodimas <[email protected]>
Signed-off-by: Heinrich Schuchardt <[email protected]>
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When building with qemu_arm64_defconfig with CONFIG_CC_OPTIMIZE_FOR_DEBUG=y
and CONFIG_EFI_LOADER=n an error undefined reference to efi_add_memory_map_pg
occurs.
Move the EFI dependent part of lmb_map_update_notify() to the EFI
sub-system.
Reported-by: Liya Huang <[email protected]>
Acked-by: Liya Huang <[email protected]>
Signed-off-by: Heinrich Schuchardt <[email protected]>
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Rather than setting up the global variables and then making the call,
pass them into function directly. This cleans up the code and makes it
all a bit easier to understand.
Signed-off-by: Simon Glass <[email protected]>
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When logging running an image, e.g. `bootefi hello` the indent is not
correctly reset.
Signed-off-by: Heinrich Schuchardt <[email protected]>
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This is done so that the device path protocol interface of the network
device can be changed internally by u-boot when a new bootfile gets
downloaded.
Signed-off-by: Adriano Cordova <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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Add an EFI HTTP driver. This commit implements the
EFI_HTTP_PROTOCOL and the EFI_HTTP_SERVICE_BINDING_PROTOCOL.
The latter is attached to the handle of th efi network
device. This is the same handle where snp, pxe, and ipconfig
are attached to.
Signed-off-by: Adriano Cordova <[email protected]>
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Add an implementation of the EFI_IP4_CONFIG2_PROTOCOL. The protocol
is attached to the handle of the efi network device. This is the same
handle where snp and pxe are attached to.
Signed-off-by: Adriano Cordova <[email protected]>
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Add network-stack agnostic way to send an http request and
parse http headers from efi drivers. This uses wget as a
backend and communicates with it via efi_wget_info.
The function efi_net_do_request allocates a buffer on behalf of an
efi application using efi_alloc and passes it to wget to receive
the data. If the method is GET and the buffer is too small, it
re-allocates the buffer based on the last received Content-Length
header and tries again. If the method is HEAD it just issues one
request. So issuing a HEAD request (to update Content-Length) and
then a GET request is preferred but not required.
The function efi_net_parse_headers parses a raw buffer containing
an http header into an array of EFI specific 'http_header' structs.
Signed-off-by: Adriano Cordova <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
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Set the device path of the efi boot device to an HTTP device path
(as formed by efi_dp_from_http) when the next boot stage is loaded
using wget (i.e., when wget is used with wget_info.set_bootdev=1).
When loaded from HTTP, the device path should account for it so that
the next boot stage is aware (e.g. grub only loads its http stack if
it itself was loaded from http, and it checks this from its device path).
Signed-off-by: Adriano Cordova <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
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Add efi_dp_from_http to form a device path from HTTP. The
device path is the concatenation of the device path returned
by efi_dp_from_ipv4 together with an URI node and an END node.
Signed-off-by: Adriano Cordova <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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Add the functions efi_net_set_addr and efi_net_get_addr to set
and get the ip address from efi code in a network agnostic way.
This could also go in net_common, or be compiled conditionally
for each network stack.
Signed-off-by: Adriano Cordova <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
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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 <[email protected]>
Cc: Ilias Apalodimas <[email protected]>
Cc: Patrick Wildt <[email protected]>
Signed-off-by: Moritz Fischer <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
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The variable overlap_only_ram is used to specify that the new memory
region that is being created needs to come from the free memory pool
-- this is done by carving out the memory region from the free
memory. The name is a bit confusing though, as other allocated memory
regions, like boot-services code and data are also part of the RAM
memory. Rename the variable to overlap_conventional to highlight the
fact that it is the free/conventional memory that is being referred to
in this context.
Signed-off-by: Sughosh Ganu <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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The EFI_CONVENTIONAL_MEMORY type, which is the usable RAM memory is
now being managed by the LMB module. Remove the addition of this
memory type to the EFI memory map. This memory now gets added to the
EFI memory map as part of the LMB memory map update event handler.
Signed-off-by: Sughosh Ganu <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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In U-Boot, LMB and EFI are two primary modules who provide memory
allocation and reservation API's. Both these modules operate with the
same regions of memory for allocations. Use the LMB memory map update
event to notify other interested listeners about a change in it's
memory map. This can then be used by the other module to keep track of
available and used memory.
There is no need to send these notifications when the LMB module is
being unit-tested. Add a flag to the lmb structure to indicate if the
memory map is being used for tests, and suppress sending any
notifications when running these unit tests.
Signed-off-by: Sughosh Ganu <[email protected]>
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For measured be boot we must avoid any volatile values in the device-tree.
We already delete /chosen/kaslr-seed if we provide and EFI RNG protocol.
Additionally remove /chosen/rng-seed provided by QEMU or U-Boot.
Reviewed-by: Ilias Apalodimas <[email protected]>
Signed-off-by: Heinrich Schuchardt <[email protected]>
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Drop all duplicate newlines. No functional change.
Signed-off-by: Marek Vasut <[email protected]>
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The auto-generated load options for media device do not contain a partition
node. We cannot expect the simple file protocol here.
Get the partition device-path via the loaded image protocol.
Fixes: e91b68fd6b83 ("efi_loader: load distro dtb in bootmgr")
Reported-by: E Shattow <[email protected]>
Signed-off-by: Heinrich Schuchardt <[email protected]>
Tested-by: E Shattow <[email protected]>
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Move the guidcmp() and guidcpy() functions to efi.h, near the definition of
the efi_guid_t type those functions deal with.
Signed-off-by: Vincent Stehlé <[email protected]>
Cc: Heinrich Schuchardt <[email protected]>
Cc: Ilias Apalodimas <[email protected]>
Cc: Tom Rini <[email protected]>
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If no device-tree is specified, try to load a device-tree from the boot
device use the $fdtfile concatenated to either of the paths '/dtb/', '/',
'/dtb/current/'.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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We can reuse this function to load the device-tree.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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Move distro_efi_get_fdt_name() to a separate C module
and rename it to efi_get_distro_fdt_name().
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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We already support creating a load option where the device-path
field contains the concatenation of the binary device-path and
optionally the device path of the initrd which we expose via the
EFI_LOAD_FILE2_PROTOCOL.
Allow to append another device-path pointing to the device-tree
identified by the device-tree GUID.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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Allow appending a device-path to a device-path that contains an end node
as separator. We need this feature for creating boot options specifying
kernel, initrd, and dtb.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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We should not pass GUIDs by value as this requires copying.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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Previous patches enable SetVariable at runtime using a volatile storage
backend using EFI_RUNTIME_SERVICES_DATA allocared memory. Since there's
no recommendation from the spec on how to notify the OS, add a volatile
EFI variable that contains the filename relative to the ESP. OS'es
can use that file and update it at runtime
$~ efivar -p -n b2ac5fc9-92b7-4acd-aeac-11e818c3130c-RTStorageVolatile
GUID: b2ac5fc9-92b7-4acd-aeac-11e818c3130c
Name: "RTStorageVolatile"
Attributes:
Boot Service Access
Runtime Service Access
Value:
00000000 75 62 6f 6f 74 65 66 69 2e 76 61 72 00 |ubootefi.var. |
Reviewed-by: Heinrich Schuchardt <[email protected]>
Signed-off-by: Ilias Apalodimas <[email protected]>
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The following symbols are defined in two includes:
* __efi_runtime_start[]
* __efi_runtime_stop[]
* __efi_runtime_rel_start[]
* __efi_runtime_rel_stop[]
Eliminate the definitions in efi_loader.h.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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In multiple places we need a function to find an EFI configuration table.
Rename get_config_table() to efi_get_configuration_table() and export it.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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Current U-Boot only supports the SMBIOS 3.0 entry point structure.
TCG2 measurement code should migrate to SMBIOS 3.0 entry
point structure.
efi_selftest tcg2 test also needs to be updated, and expected
PCR[1] result is changed since guid for SMBIOS EFI system table
uses different guid SMBIOS3_TABLE_GUID instead of SMBIOS_TABLE_GUID.
Signed-off-by: Masahisa Kojima <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
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Some code moved from cmd/bootefi.c is actually necessary only for "bootefi
<addr>" command (starting an image manually loaded by a user using U-Boot
load commands or other methods (like JTAG debugger).
The code will never been opted out as unused code by a compiler which
doesn't know how EFI boot manager is implemented. So introduce a new
configuration, CONFIG_EFI_BINARY_EXEC, to enforce them opted out
explicitly.
Signed-off-by: AKASHI Takahiro <[email protected]>
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