Add a bitfield which tracks when bootmeths have been used. This will be
needed when global bootmeths can be used later in the iteration.
Fix a missing bootflow_free() while here.
Signed-off-by: Simon Glass <sjg@chromium.org>
The current 'doing_global' refers to being in the state of processing
global bootmeths. Since global bootmeths are currently used once at the
start, it becomes false once the last global bootmeth has been used.
In preparation for allowing bootmeths to run at other points in the
bootstd interation, add a new 'have_global' flag which tracks whether
there are any global bootmeths in the method_order[] list. It is set up
when iteration starts. Unlike doing_global which resets back to false
after the global bootmeths have been handled, once have_global is set to
true, it remains true for the entire iteration process. This provides a
quick check as to whether global-bootmeth processing is needed.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add a few comments about global bootmeths and first_glob_method
Fix a broken line in bootmeth_setup_iter_order() while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This should add the filename provided to the image, not the original
bootflow filename. Fix it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: 114dd14e38 ("bootmeth: Update the read_file() method to...")
In some cases we don't have a particular address to read into so would
like one reserved. Adjust the read_file() method to support this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Rather than using bflow->fname, which assumes that it is the same as the
passed-in filename, use the passed in filename. This can be different in
some cases.
Signed-off-by: Simon Glass <sjg@chromium.org>
Rather than using bflow->fname, which assumes that it is the same as the
passed-in filename, use the passed in filename. This can be different in
some cases.
Signed-off-by: Simon Glass <sjg@chromium.org>
This existing function does not have any context associated with it.
Rename it so that fs_read() can be used for the new FS uclass.
Signed-off-by: Simon Glass <sjg@chromium.org>
Using an abuf for this function simplifies returning the size and also
makes it easier to free memory afterwards. Update the API and callers.
Signed-off-by: Simon Glass <sjg@chromium.org>
Using an abuf for this function simplifies returning the size and also
makes it easier to free memory afterwards. Update the API and callers.
Signed-off-by: Simon Glass <sjg@chromium.org>
We want to record the type of each file which is loaded. Add an new
parameter for this, to the read_file() method. Update all users.
Make bootmeth_common_read_file() store information about the image that
is read.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
As a first step to recording images and where they came from, update
this function to do so, since it is used by two bootmeths
Create a helper function in the bootflow system, since recorded
images are always associated with bootflows.
Signed-off-by: Simon Glass <sjg@chromium.org>
We have previously added logic to allow a "fallback" option to be
specified in the extlinux configuration. Provide a command that allows
us to set this as the preferred default option when booting.
Combined with the bootcount functionality, this allows the "altbootcmd"
to provide a means of falling back to a previously known good state
after a failed update. For example, if "bootcmd" is set to:
bootflow scan -lb
We would set "altbootcmd" to:
bootmeth set extlinux fallback 1; bootflow scan -lb
Causing the boot process to boot from the fallback option.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
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 <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>
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 c8ffd1356d, reversing
changes made to 2ee6f3a5f7.
Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>
Some bootflows (such as EFI and ChromiumOS) delay reading the kernel until
it is needed to boot. This saves time when scanning and avoids needing to
allocate memory for something that may never be used.
To permit reading of these files, add a new 'bootflow read' command.
Signed-off-by: Simon Glass <sjg@chromium.org>
This functionality current sits in bootstd, but it is more generally
useful. Add a function to load a file into memory, allocating it as
needed. Adjust bootstd to use this version.
Note: Tests are added in the subsequent patch which converts the 'cat'
command to use this function.
Signed-off-by: Simon Glass <sjg@chromium.org>
In a few cases the error handling is not quite right. Make sure we
return the actual error in distro_efi_read_bootflow_file() rather than
-EINVAL. Return -IO when a file cannot be read. Also show the error name
if available.
This does not change operation, but does make it easier to diagnose
problems.
Signed-off-by: Simon Glass <sjg@chromium.org>
Normally the bootmeth driver reads the bootflow from the bootdev, since
it knows the correct way to do it.
However it is easier for some bootdevs to handle this themselves. For
example, reading from SPI flash is quite different from other devices.
Add a way for the bootdev to pass a bootflow to the bootmeth, so that
this can be supported.
Signed-off-by: Simon Glass <sjg@chromium.org>
Some operating systems provide a logo in bmp format. Read this in if
present so it can be displayed in the menu.
Signed-off-by: Simon Glass <sjg@chromium.org>
Typically we want to find and use global bootmeths first, since they have
the best idea of how the system should boot. We then use normal bootmeths
as a fallback.
Add the logic for this, putting global bootmeths at the end of the
ordering. We can then easily scan the global bootmeths first, then drop
them from the list for subsequent bootdev-centric scans.
This changes the ordering of global bootmeths, so update the
bootflow_system() accordingly.
Drop the comment from bootmeth_setup_iter_order() since this is an
exported function and it should be in the header file.
Signed-off-by: Simon Glass <sjg@chromium.org>
The current way of handling things like EFI bootmgr is a bit odd, since
that bootmeth handles selection of the bootdev itself. VBE needs to work
the same way, so we should support it properly.
Add a flag that indicates that the bootmeth is global, rather than being
invoked on each bootdev. Provide a helper to read a bootflow from the
bootmeth.
Signed-off-by: Simon Glass <sjg@chromium.org>
Some bootmeths can provide information about what is available to boot.
For example, VBE simple provides access to the firmware state.
Add a new method for this, along with a sandbox test.
Signed-off-by: Simon Glass <sjg@chromium.org>
If the ordering produces no entries, this is an error. Report it, so that
the caller doesn't try to continue with a NULL bootmeth.
This fixes a crash in the bootflow_iter test when running with the sandbox
'default' device tree, instead of the required 'test' one.
Signed-off-by: Simon Glass <sjg@chromium.org>
A bootmeth is a method of locating an operating system. For now, just
add the uclass itself. Drivers for particular bootmeths are added later.
If no bootmeths devices are included in the devicetree, create them
automatically. This avoids the need for boilerplate in the devicetree
files.
Signed-off-by: Simon Glass <sjg@chromium.org>
