u-boot.git/env, branch v2025.07-rc2

env: Introduce support for MTD

2025-05-05T20:16:59+00:00

Introduce support for env in generic MTD. Currently we only support SPI
flash based on the lagacy sf cmd that assume SPI flash are always NOR.
This is not the case as to SPI controller also NAND can be attached.

To support also these flash scenario, add support for storing and
reading ENV from generic MTD device by adding an env driver that
base entirely on the MTD api.

Introduce a new kconfig CONFIG_ENV_IS_IN_MTD and
CONFIG_ENV_MTD_DEV to define the name of the MTD device as exposed
by mtd list.

Signed-off-by: Christian Marangi

Merge patch series "bloblist: fix the overriding of fdt from bloblist"

2025-04-28T18:45:45+00:00

This series from Raymond Mao  fixes some cases
of passing the device tree to U-Boot via standard passage and then
ensures that we set the environment variable of the device tree
correctly in this case.

Link: https://lore.kernel.org/r/20250331224011.2734284-1-raymond.mao@linaro.org

env: point fdt address to the fdt in a bloblist

2025-04-28T16:13:19+00:00

Point fdt_addr to the fdt embedded in the bloblist since fdt_addr
is a default address for bootefi, bootm and booti to look for the
device tree when launching the kernel.

Signed-off-by: Raymond Mao

amd: versal2: Add support for saving env based on bootmode

2025-04-16T13:39:48+00:00

Enable saving variables to MMC(FAT) and SPI based on primary
bootmode. If bootmode is JTAG, dont save env anywhere(NOWHERE).

Enable ENV_FAT_DEVICE_AND_PART="0:auto" for Versal Gen 2 platform.

Signed-off-by: Venkatesh Yadav Abbarapu 
Link: https://lore.kernel.org/r/20250411154612.107136-1-venkatesh.abbarapu@amd.com
Signed-off-by: Michal Simek

env: mmc: Fix test for ENV_IS_EMBEDDED

2025-04-10T17:58:04+00:00

The symbol "ENV_IS_EMBEDDED" is an environment internal define and not a
real CONFIG symbol. The IS_ENABLED() macro is still valid to use here,
so update the check.

Signed-off-by: Tom Rini

env: mmc: Clean up env_mmc_load() ifdeffery

2025-02-28T14:35:52+00:00

Rename the variants of env_mmc_load() for redundant and non-redundant
environment to env_mmc_load_redundant() and env_mmc_load_singular()
respectively and convert the env_mmc_load() implementation to use of
if (IS_ENABLED(...)). As a result, drop __maybe_unused from
mmc_env_is_redundant_in_both_boot_hwparts().

Signed-off-by: Marek Vasut 
Reviewed-by: Quentin Schulz 
Reviewed-by: Mattijs Korpershoek

env: mmc: Make redundant env in both eMMC boot partitions consider DT properties

2025-02-28T14:35:52+00:00

Introduce a new function mmc_env_is_redundant_in_both_boot_hwparts()
which replaces IS_ENABLED(ENV_MMC_HWPART_REDUND) and internally does
almost the same check as the macro which assigned ENV_MMC_HWPART_REDUND
did, and call it in place of IS_ENABLED(ENV_MMC_HWPART_REDUND).

The difference compared to IS_ENABLED(ENV_MMC_HWPART_REDUND) is
in the last conditional, which does not do plain macro compare
(CONFIG_ENV_OFFSET == CONFIG_ENV_OFFSET_REDUND), but instead does
mmc_offset(mmc, 0) == mmc_offset(mmc, 1). If OF_CONTROL is not
in use, this gets optimized back to original macro compare, but
if OF_CONTROL is in use, this also takes into account the DT
properties u-boot,mmc-env-offset and u-boot,mmc-env-offset-redundant.

Signed-off-by: Marek Vasut 
Reviewed-by: Mattijs Korpershoek 
Reviewed-by: Quentin Schulz

env: fat: Avoid writing to read-only location

2025-02-10T16:29:53+00:00

The env_fat_get_dev_part() function mostly returns a fixed string, set
via some Kconfig variable. However when the first character is a colon,
that means that the boot device number is determined at runtime, and
patched in. This requires altering the string.

So far this was done via some ugly and actually illegal direct write to
the .rodata string storage. We got away with this because U-Boot maps
everything as read/write/execute so far.

A proposed patch set actually enforces read-only (and no-execute)
permissions in the page tables, so this routine now causes an exception:
=======================
Loading Environment from FAT... "Synchronous Abort" handler, esr 0x9600004f, far 0xfffb7d4c
elr: 000000004a054228 lr : 000000004a05421c (reloc)
elr: 00000000fff7c228 lr : 00000000fff7c21c
.....
=======================

Rewrite the routine to do away with the dodgy string manipulation,
instead allocate the string in the r/w .data section, where we can
safely manipulate it.

Signed-off-by: Andre Przywara 
Acked-by: Ilias Apalodimas

treewide: Replace Maximumm with Maximum in Kconfig symbol description

2025-01-24T20:15:05+00:00

Replace Maximumm with Maximum in Kconfig symbol description, fix a typo.
No functional change.

Signed-off-by: Marek Vasut 
Reviewed-by: Michal Simek

env: Switch the callback static list to Kconfig

2024-12-06T22:37:43+00:00

Switch the callback static list from the board configuration variable
CFG_ENV_CALLBACK_LIST_STATIC to Kconfig CONFIG_ENV_CALLBACK_LIST_STATIC.

Signed-off-by: Christoph Niedermaier 
Reviewed-by: Marek Vasut