u-boot.git/lib, branch next

acpi: Correct dependencies for GENERATE_ACPI_TABLE

2026-04-03T19:42:50+00:00

In order to build this code, outside of QEMU systems which instead have
provided tables that we use, we must select ACPIGEN as well.

Signed-off-by: Tom Rini

global: Audit Kconfig usage of PARTITION_TYPE_GUID

2026-04-03T18:06:10+00:00

It is not functionally possible to use the code enabled by
PARTITION_TYPE_GUID without having EFI_PARTITION be enabled as well. Not
all users of the former had ensured that the latter was enabled however,
so audit all current users and then as appropriate select or imply
EFI_PARTITION as needed.

Signed-off-by: Tom Rini

optee: Correct dependencies for BOOTM_OPTEE

2026-04-03T18:06:07+00:00

As exposed by "make randconfig", we have an issue with the dependencies
for BOOTM_OPTEE. This symbol needs to select BOOTM_LINUX and in turn
depend on the library symbols that have to be enabled for BOOTM_LINUX to
be valid (LIB_BOOTI, LIB_BOOTM and LIB_BOOTZ).

Reviewed-by: Marek Vasut 
Signed-off-by: Tom Rini

fw_loader: Introduce SUPPORTS_FW_LOADER symbol

2026-03-25T20:37:06+00:00

The implementation of FW_LOADER requires CMDLINE to be enabled, and
expressses this. In order to not have to have every users also depends
on CMDLINE introduce SUPPORTS_FW_LOADER. This depends on CMDLINE and
ENV_SUPPORT and then we have all users depends on SUPPORTS_FW_LOADER.

Signed-off-by: Tom Rini

fdt: Prefer %pap over %llx

2026-03-25T20:37:03+00:00

In cases where phys_addr_t/phys_size_t is being printed, it's possible to
use tiny-printf-friendly %pap instead of %llx. For instance, in SPL, with
tiny-printf:

Before the patch:
fdtdec_setup_memory_banksize: DRAM Bank #0: start = 0xx, size = 0xx

After the patch:
fdtdec_setup_memory_banksize: DRAM Bank #0: start = 80000000, size = 40000000

Signed-off-by: Alexander Sverdlin

efi_vars: Implement SPI Flash store

2026-03-14T07:15:09+00:00

Currently U-Boot uses ESP as storage for EFI variables.
Devices with SPI Flash are used for storing environment with this
commit we allow EFI variables to be stored on SPI Flash.

Signed-off-by: Shantur Rathore 
Signed-off-by: Michal Simek 
Tested-by: Neil Armstrong  # on AML-S905D3-CC
Acked-by: Ilias Apalodimas

efi_loader: avoid superfluous variable store writes on unchanged data

2026-03-14T07:14:20+00:00

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 
Reviewed-by: Heinrich Schuchardt 
Signed-off-by: Michal Simek 
Reviewed-by: Ilias Apalodimas

efi_loader: avoid buffer overrun in efi_var_restore()

2026-03-14T07:14:01+00:00

The value of buf->length comes from outside U-Boot and may be incorrect.
We must avoid to overrun our internal buffer for excessive values.

If buf->length is shorter than the variable file header, the variable
file is invalid.

Reviewed-by: Ilias Apalodimas 
Tested-by: Michal Simek 
Signed-off-by: Heinrich Schuchardt

efi_loader: export efi_ecpt_guid

2026-03-14T07:10:26+00:00

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 
Cc: Heinrich Schuchardt 
Cc: Ilias Apalodimas 
Cc: Tom Rini 
Reviewed-by: Ilias Apalodimas 
Reviewed-by: Heinrich Schuchardt

lib: uuid: add EBBR 2.1 conformance profile GUID

2026-03-14T07:10:26+00:00

Add support for printing the EFI_CONFORMANCE_PROFILE_EBBR_2_1_GUID as human
readable text.

This is compiled in only when CONFIG_CMD_EFIDEBUG and CONFIG_EFI_EPCT are
set.

Suggested-by: Heinrich Schuchardt 
Signed-off-by: Vincent Stehlé 
Cc: Tom Rini 
Reviewed-by: Ilias Apalodimas 
Reviewed-by: Heinrich Schuchardt