u-boot.git/boot/pxe_utils.c, branch v2025.01

menu: add support to check if menu needs to be reprinted

2024-11-04T22:41:38+00:00

This patch adds a new callback named need_reprint for menu.
The need_reprint will be called before printing the menu. If the
callback exists and returns FALSE, menu printing will be canceled.

This is very useful if the menu was not changed. It can save time
for serial-based menu to handle more input data.

Signed-off-by: Weijie Gao 
Reviewed-by: Daniel Golle 
Tested-by: Daniel Golle

boot: Add logic to enable booting from fallback option

2024-10-15T16:24:27+00:00

The "fallback" extlinux config option allows us to set an alternative
default boot option for when it has been detected that the default is
failing. Implement the logic required to boot from this option when
desired.

Signed-off-by: Martyn Welch 
Reviewed-by: Simon Glass

boot: pxe_utils: Add fallback support

2024-10-15T16:24:27+00:00

When configured correctly, we can detect when boot fails after the boot
process has been handed over to the kernel through the use of U-Boot's
bootcount support. In some instances, such as when we are performing
atomic updates via a system such as OSTree, it is desirable to provide a
fallback option so that we can return to a previous (hopefully working)
state.

Add a "fallback" option to the supported extlinux configuration options
that points to a label like "default" so that we can utilise this in
later commits.

Signed-off-by: Martyn Welch 
Reviewed-by: Simon Glass

boot: Remove duplicate newlines

2024-07-15T18:12:17+00:00

Drop all duplicate newlines. No functional change.

Signed-off-by: Marek Vasut

Merge patch series "automatically add /chosen/kaslr-seed and deduplicate code"

2024-06-28T23:31:28+00:00

Tim Harvey  says:

This series will automatically add /chosen/kaslr-seed to the dt if
DM_RNG is enabled
during the boot process.

If RANDOMIZE_BASE is enabled in the Linux kernel instructing it to
randomize the virtual address at which the kernel image is loaded, it
expects entropy to be provided by the bootloader by populating
/chosen/kaslr-seed with a 64-bit value from source of entropy at boot.

If we have DM_RNG enabled populate this value automatically when
fdt_chosen is called. We skip this if ARMV8_SEC_FIRMWARE_SUPPORT
is enabled as its implementation uses a different source of entropy
that is not yet implemented as DM_RNG. We also skip this if
MEASURED_BOOT is enabled as in that case any modifications to the
dt will cause measured boot to fail (although there are many other
places the dt is altered).

As this fdt node is added elsewhere create a library function and
use it to deduplicate code. We will provide a parameter to overwrite
the node if present.

For our automatic injection, we will use the first rng device and
not overwrite if already present with a non-zero value (which may
have been populated by an earlier boot stage). This way if a board
specific ft_board_setup() function wants to customize this behavior
it can call fdt_kaslrseed with a rng device index of its choosing and
set overwrite true.

Note that the kalsrseed command (CMD_KASLRSEED) is likely pointless now
but left in place in case boot scripts exist that rely on this command
existing and returning success. An informational message is printed to
alert users of this command that it is likely no longer needed.

Note that the Kernel's EFI STUB only relies on EFI_RNG_PROTOCOL for
randomization and completely ignores the kaslr-seed for its own
randomness needs (i.e the randomization of the physical placement of
the kernel). It gets weeded out from the DTB that gets handed over via
efi_install_fdt() as it would also mess up the measured boot DTB TPM
measurements as well.

use fdt_kaslrseed function to de-duplicate code

2024-06-28T23:30:45+00:00

Use the fdt_kaslrseed function to deduplicate code doing the same thing.

Note that the kalsrseed command (CMD_KASLRSEED) is likely pointless now
but left in place in case boot scripts exist that rely on this command
existing and returning success. An informational message is printed to
alert users of this command that it is likely no longer needed.

Note that the Kernel's EFI STUB only relies on EFI_RNG_PROTOCOL for
randomization and completely ignores the kaslr-seed for its own
randomness needs (i.e the randomization of the physical placement of
the kernel). It gets weeded out from the DTB that gets handed over via
efi_install_fdt() as it would also mess up the measured boot DTB TPM
measurements as well.

Signed-off-by: Tim Harvey 
Reviewed-by: Simon Glass 
Cc: Michal Simek 
Cc: Andy Yan 
Cc: Akash Gajjar 
Cc: Ilias Apalodimas 
Cc: Simon Glass 
Cc: Patrick Delaunay 
Cc: Patrice Chotard 
Cc: Devarsh Thakkar 
Cc: Heinrich Schuchardt 
Cc: Hugo Villeneuve 
Cc: Marek Vasut 
Cc: Tom Rini 
Cc: Chris Morgan 
Acked-by: Michal Simek

pxe: Add debugging for booting

2024-06-26T19:17:51+00:00

Show which boot protocol is being used.

Signed-off-by: Simon Glass 
Reviewed-by: Michael Trimarchi

Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"

2024-05-20T19:35:03+00:00

As part of bringing the master branch back in to next, we need to allow
for all of these changes to exist here.

Reported-by: Jonas Karlman 
Signed-off-by: Tom Rini

Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""

2024-05-19T14:16:36+00:00

When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay
Ethernet"' I failed to notice that b4 noticed it was based on next and
so took that as the base commit and merged that part of next to master.

This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing
changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35.

Reported-by: Jonas Karlman 
Signed-off-by: Tom Rini

boot: Remove and add needed includes

2024-05-06T21:05:04+00:00

Remove  from all "boot/" files and when needed add
missing include files directly.

Signed-off-by: Tom Rini