u-boot.git/doc/develop/distro.rst, branch master Unnamed repository; edit this file 'description' to name the repository. doc: mention that extlinux.conf can use environment in "append" 2025-06-28T11:03:19+00:00 Fiona Klute fiona.klute@gmx.de 2025-06-23T11:38:01+00:00 97d6a2e3fe619b50303f97d0eebafaf50f1f075d This option is very useful for A/B boot setups with read-only filesystems: Letting U-Boot fill in the rootfs (and possibly related parameters) allows keeping all boot parameters except the actual slot selection in the extlinux.conf file, where they can be updated easily. Signed-off-by: Fiona Klute <fiona.klute@gmx.de> Cc: Tom Rini <trini@konsulko.com> 
This option is very useful for A/B boot setups with read-only
filesystems: Letting U-Boot fill in the rootfs (and possibly related
parameters) allows keeping all boot parameters except the actual slot
selection in the extlinux.conf file, where they can be updated easily.

Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Cc: Tom Rini <trini@konsulko.com>
doc/develop/distro.rst: Better document upstream definition of extlinux.conf 2025-01-05T01:30:49+00:00 Tom Rini trini@konsulko.com 2024-12-21T17:45:29+00:00 cdf69532900d7dc6366d7dabb3bab75e53de2b09 First, the "Boot Loader Specification" link has moved to a new location, so link to that directly. Second, that link does not document as much of the extlinux.conf format as I recall the old version doing at least. However, the Syslinux Project wiki is the current location of the documentation linked to in doc/README.pxe and also has a reference for SYSLINUX. Link to both of these. Signed-off-by: Tom Rini <trini@konsulko.com> 
First, the "Boot Loader Specification" link has moved to a new location,
so link to that directly. Second, that link does not document as much of
the extlinux.conf format as I recall the old version doing at least.
However, the Syslinux Project wiki is the current location of the documentation
linked to in doc/README.pxe and also has a reference for SYSLINUX. Link
to both of these.

Signed-off-by: Tom Rini <trini@konsulko.com>
global: Use CONFIG_XPL_BUILD instead of CONFIG_SPL_BUILD 2024-10-11T17:44:48+00:00 Simon Glass sjg@chromium.org 2024-09-30T01:49:50+00:00 1d6132e2a2b1217567b88ddd6d11662afd4001df Complete this rename for all directories outside arch/ board/ drivers/ and include/ Use the new symbol to refer to any 'SPL' build, including TPL and VPL Signed-off-by: Simon Glass <sjg@chromium.org> 
Complete this rename for all directories outside arch/ board/ drivers/
and include/

Use the new symbol to refer to any 'SPL' build, including TPL and VPL

Signed-off-by: Simon Glass <sjg@chromium.org>
boot: pxe_utils: skip fdt setup in case legacy kernel is booted 2024-03-01T23:34:08+00:00 Svyatoslav Ryhel clamor95@gmail.com 2024-01-25T20:16:54+00:00 c95e948870bdfc606946174facd9ea359ce84e58 Currently, if boot with extlinux.conf and do not set the fdt U-Boot will provide its own device tree. This behavior is beneficial if the U-Boot device tree is in sync with Linux, but it totally halts the booting of pre-dtb kernels (3.4 for example) since it uses ATAGs. To fix this, pass `-` in the fdt extlinux field as a signal that no tree should be used. Suggested-by: Jonas Schwöbel <jonasschwoebel@yahoo.de> Tested-by: Jethro Bull <jethrob@hotmail.com> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> 
Currently, if boot with extlinux.conf and do not set the fdt
U-Boot will provide its own device tree. This behavior is
beneficial if the U-Boot device tree is in sync with Linux,
but it totally halts the booting of pre-dtb kernels (3.4 for
example) since it uses ATAGs. To fix this, pass `-` in the
fdt extlinux field as a signal that no tree should be used.

Suggested-by: Jonas Schwöbel <jonasschwoebel@yahoo.de>
Tested-by: Jethro Bull <jethrob@hotmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
global: Migrate CONFIG_EXTRA_ENV_SETTINGS to CFG 2022-12-23T15:09:42+00:00 Tom Rini trini@konsulko.com 2022-12-04T15:03:50+00:00 0613c36a7a5973d58a50b764ee647099e80cc97d Perform a simple rename of CONFIG_EXTRA_ENV_SETTINGS to CFG_EXTRA_ENV_SETTINGS Signed-off-by: Tom Rini <trini@konsulko.com> 
Perform a simple rename of CONFIG_EXTRA_ENV_SETTINGS to CFG_EXTRA_ENV_SETTINGS

Signed-off-by: Tom Rini <trini@konsulko.com>
cmd: pxe: add alias devicetree-overlay for fdtoverlays 2022-10-11T19:40:48+00:00 Edoardo Tomelleri e.tomell@gmail.com 2022-09-21T13:26:33+00:00 35821a25c1ca06b71fbf6f46442cc9d93b31fb7d This adds keyword devicetree-overlay as an alias for fdtoverlays in extlinux (sysboot) and pxe to better follow the Boot Loader Specification [1], improves documentation around them by adding an example for both fdtoverlays and devicetree-overlay and the environment variable required for this feature. The link for the spec is updated to the current one. [1] https://systemd.io/BOOT_LOADER_SPECIFICATION/ Signed-off-by: Edoardo Tomelleri <e.tomell@gmail.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Reviewed-by: Ramon Fried <rfried.dev@gmail.com> 
This adds keyword devicetree-overlay as an alias for fdtoverlays in
extlinux (sysboot) and pxe to better follow the Boot Loader Specification
[1], improves documentation around them by adding an example for both
fdtoverlays and devicetree-overlay and the environment variable required
for this feature. The link for the spec is updated to the current one.

[1] https://systemd.io/BOOT_LOADER_SPECIFICATION/

Signed-off-by: Edoardo Tomelleri <e.tomell@gmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
bootstd: doc: Add documentation 2022-04-25T14:00:04+00:00 Simon Glass sjg@chromium.org 2022-04-25T05:31:26+00:00 e7b2ce191ecab558b130b3b926dddcfc7231deb0 Add documentation for this feature, including the commands and full devicetree bindings. Signed-off-by: Simon Glass <sjg@chromium.org> 
Add documentation for this feature, including the commands and full
devicetree bindings.

Signed-off-by: Simon Glass <sjg@chromium.org>
doc: distro: Update list of all support boot types 2022-04-09T19:06:31+00:00 Pali Rohár pali@kernel.org 2022-04-06T09:35:46+00:00 2f5c9ad3f4ae9128dff35e8c704f629a5c42518e Add HOST, UBIFS. Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> 
Add HOST, UBIFS.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
doc: Move distro boot doc to rST 2021-11-12T00:02:41+00:00 Simon Glass sjg@chromium.org 2021-10-14T18:48:10+00:00 37c5195dfcd15781db9e9f7f414611dc1af3bd2e Move this over to the new rST format. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Artem Lapkin <email2tema@gmail.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com> 
Move this over to the new rST format.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Artem Lapkin <email2tema@gmail.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>