u-boot.git/lib/Kconfig, branch v2025.10

efi: Rename CONFIG_EFI to CONFIG_EFI_CLIENT

2025-07-26T05:34:28Z

The generic name 'EFI' would be more useful for common EFI features. At present it just refers to the EFI app and stub, which is confusing. Rename it to EFI_CLIENT Signed-off-by: Simon Glass

Merge patch series "BOOTP/DHCPv4 enhancements"

2025-05-23T17:31:03Z

Sean Edmond says: In our datacenter application, a single DHCP server is servicing 36000+ clients. Improvements are required to the DHCPv4 retransmission behavior to align with RFC and ensure less pressure is exerted on the server: - retransmission backoff interval maximum is configurable (environment variable bootpretransmitperiodmax) - initial retransmission backoff interval is configurable (environment variable bootpretransmitperiodinit) - transaction ID is kept the same for each BOOTP/DHCPv4 request (not recreated on each retry) For our application we'll use: - bootpretransmitperiodmax=16000 - bootpretransmitperiodinit=2000 A new configuration BOOTP_RANDOM_XID has been added to enable a randomized BOOTP/DHCPv4 transaction ID. Enhance DHCPv4 sending/parsing option 209 (PXE config file). A previous patch was accepted. A new patch fixes a possible double free() and addresses latest review comments. Link: https://lore.kernel.org/r/20240509023918.2504185-1-seanedmond@microsoft.com

net: bootp: BOOTP/DHCPv4 retransmission improvements

2025-05-23T17:28:51Z

This patch introduces 3 improvements to align with RFC 951: - retransmission backoff interval maximum is configurable - initial retranmission backoff interval is configurable - transaction ID is kept the same for each BOOTP/DHCPv4 request In applications where thousands of nodes are serviced by a single DHCP server, maximizing the retransmission backoff interval at 2 seconds (the current u-boot default) exerts high pressure on the DHCP server and network layer. RFC 951 “7.2. Client Retransmission Strategy” states that the retransmission backoff interval should be limited to 60 seconds. This patch allows the interval to be configurable using the environment variable "bootpretransmitperiodmax" The initial retranmission backoff period defaults to 250ms, which is also too small for these scenarios with many clients. This patch makes the initial retransmission interval to be configurable using the environment variable "bootpretransmitperiodinit". Also, on a retransmission it is not expected for the transaction ID to change (only the 'secs' field should be updated). Let's save the transaction ID and use the same transaction ID for each BOOTP/DHCPv4 exchange. Signed-off-by: Sean Edmond

tiny-printf: Handle formatting of %p with an extra Kconfig

2025-05-22T16:57:12Z

The formatting with %pa / %pap behaves like %x, which results in an incorrect value being output. To improve this, a new fine-tuning Kconfig SPL_USE_TINY_PRINTF_POINTER_SUPPORT for pointer formatting has been added. If it is enabled, the output of %pa / %pap should be correct, and if it is disabled, the pointer formatting is completely unsupported. In addition to indicate unsupported formatting, '?' will be output. This allows enabling pointer formatting only when needed. For SPL_NET it is selected by default. Then it also supports the formatting with %pm, %pM and %pI4. In summery this level of %p support for tiny printf is possible now: 1) The standard tiny printf won't have support for pointer formatting. So it doesn't print misleading values for %pa, instead '?' will be output: %p => ? %pa => ?a %pap => ?ap 2) If SPL_USE_TINY_PRINTF_POINTER_SUPPORT is enabled or DEBUG is defined tiny printf supports formatting %p and %pa / %pap. 3) If SPL_NET is enabled the support of pointers is extended for %pm, %pM and %pI4. Signed-off-by: Christoph Niedermaier

uthread: add cooperative multi-tasking interface

2025-04-23T19:19:44Z

Add a new internal API called uthread (Kconfig symbol: UTHREAD) which provides cooperative multi-tasking. The goal is to be able to improve the performance of some parts of U-Boot by overlapping lengthy operations, and also implement background jobs in the U-Boot shell. Each uthread has its own stack allocated on the heap. The default stack size is defined by the UTHREAD_STACK_SIZE symbol and is used when uthread_create() receives zero for the stack_sz argument. The implementation is based on context-switching via initjmp()/setjmp()/ longjmp() and is inspired from barebox threads [1]. A notion of thread group helps with dependencies, such as when a thread needs to block until a number of other threads have returned. The name "uthread" comes from "user-space threads" because the scheduling happens with no help from a higher privileged mode, contrary to more complex models where kernel threads are defined. But the 'u' may as well stand for 'U-Boot' since the bootloader may actually be running at any privilege level and the notion of user vs. kernel may not make much sense in this context. [1] https://github.com/barebox/barebox/blob/master/common/bthread.c Signed-off-by: Jerome Forissier Reviewed-by: Ilias Apalodimas

acpi: select CONFIG_BLOBLIST

2025-04-11T11:27:32Z

Since commit 53d5a221632e ("emulation: Use bloblist to hold tables") `make qemu-riscv64_smode_defconfig acpi.config && make` fails with qfw_acpi.c:146:(.text.evt_write_acpi_tables+0xc): undefined reference to `bloblist_add' Build with bloblist support. Fixes: 53d5a221632e ("emulation: Use bloblist to hold tables") Reviewed-by: Ilias Apalodimas Reviewed-by: Tom Rini Signed-off-by: Heinrich Schuchardt

Kconfig: Fix "warning: style: quotes recommended" warnings

2025-04-01T14:46:18Z

We have three warnings about needing to use quotes around some strings in Kconfig files today. In two of these cases we can just add the missing strings. In the case of INTEL_PINCTRL_PADCFG_PADTOL the symbol is never referenced and should be dropped. Signed-off-by: Tom Rini

lib: correct description of CONFIG_SYS_FDT_PAD

2025-03-10T06:41:26Z

CONFIG_SYS_FDT_PAD defines the number of unused bytes added to a device-tree and not the total size. Fixes: 40ed7be4af52 ("Convert CONFIG_SYS_FDT_PAD to Kconfig") Reviewed-by: Ilias Apalodimas Signed-off-by: Heinrich Schuchardt

lib: Allow crc16 code to be dropped

2025-02-03T22:00:42Z

This code is not necessarily needed in VPL, even if SPL uses it, so adjust the rules to allow it to be dropped. Do the same for the hash API. Signed-off-by: Simon Glass Reviewed-by: Tom Rini

tpm: add wrapper and helper APIs for PCR allocate

2025-01-28T06:58:41Z

Add PCR allocate wrapper APIs for using in tcg2 protocol. The wrapper proceeds a PCR allocate command, followed by a shutdown command. A system boot is required after two commands since TPM device needs a HW reset to activate the new algorithms config. Also, a helper function is included to determine the new bank mask for PCR allocation by combining the status of current active, supported and eventlog bank masks. A new kconfig is created. PCR allocate and system reboot only happens when the kconfig is selected, otherwise just exit with errors. Signed-off-by: Raymond Mao Reviewed-by: Ilias Apalodimas Signed-off-by: Ilias Apalodimas