Allow a slice of RAM to be mapped to a blkmap. This means that RAM can
now be accessed as if it was a block device, meaning that existing
filesystem drivers can now be used to access ramdisks.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
blkmaps are loosely modeled on Linux's device mapper subsystem. The
basic idea is that you can create virtual block devices whose blocks
can be backed by a plethora of sources that are user configurable.
This change just adds the basic infrastructure for creating and
removing blkmap devices. Subsequent changes will extend this to add
support for actual mappings.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
We need extensions to be set up before we start trying to boot any of the
bootdevs. Add a new priority before all the others for tht sort of thing.
Also add a 'none' option, so that the first one is not 0.
While we are here, comment enum bootdev_prio_t fully and expand the test
for the 'bootdev hunt' command.
Signed-off-by: Simon Glass <sjg@chromium.org>
The description claims that the device is probed but it isn't.
Add the device_probe() call.
Also consolidate the iteration into one function.
Fixes: 8a5cbc065d ("dm: blk: Use uclass_find_first/next_device() in blk_first/next_device()")
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Update the sandbox implementation to use UCLASS_HOST and adjust all
the pieces to continue to work:
- Update the 'host' command to use the new API
- Replace various uses of UCLASS_ROOT with UCLASS_HOST
- Disable test_eficonfig since it doesn't work (this should have a unit
test to allow this to be debugged)
- Update the blk test to use the new API
- Drop the old header file
Unfortunately it does not seem to be possible to split this change up
further.
Signed-off-by: Simon Glass <sjg@chromium.org>
Create a block driver for the new HOST uclass. This handles attaching and
detaching host files.
For now the uclass is not used but this will be plumbed in with future
patches.
Signed-off-by: Simon Glass <sjg@chromium.org>
Sandbox supports block devices which can access files on the host machine.
At present there is no uclass for this. The devices are attached to the
root devic. The block-device type is therefore set to UCLASS_ROOT which
is confusing.
Block devices should be attached to a 'media' device instead, something
which handles access to the actual media and provides the block driver
for the block device.
Create a new uclass to handle this. It supports two operations, to attach
and detach a file on the host machine.
For now this is not fully plumbed in.
Signed-off-by: Simon Glass <sjg@chromium.org>
This function now finds its block-device child by looking for a child
device of the correct uclass (UCLASS_BLK). It cannot produce a device of
any other type, so drop the superfluous check.
Provide a version which does not probe the device, since that is often
needed when setting up the device's platdata.
Also fix up the function's comment.
Signed-off-by: Simon Glass <sjg@chromium.org>
Some tests access data in block devices and so cause the cache to fill
up. This results in memory being allocated.
Some tests check the malloc usage at the beginning and then again at the
end, to ensure there is no memory leak caused by the test. The block cache
makes this difficult, since the any test may cause entries to be allocated
or even freed, if the cache becomes full.
It is simpler to clear the block cache after each test. This ensures that
it will not introduce noise in tests which check malloc usage.
Add the logic to clear the cache, using the existing blkcache_invalidate()
function. Drop the duplicate code at the same time.
Signed-off-by: Simon Glass <sjg@chromium.org>
Use the correct SPL_TPL_ variable so that these features can be enabled in
TPL and VPL as needed.
Disable it by default in TPL to avoid any code-size increase. No boards
are actually using it since the Makefile rules don't allow including
drivers/block/ with TPL_DM enabled. It can be manually enabled as needed.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
At present we have functions called blk_dread(), etc., which take a
struct blk_desc * to refer to the block device. Add some functions which
use udevice instead, since this is more in keeping with how driver model
is supposed to work.
Update one of the tests to use this.
Note that it would be nice to update the functions in disk-uclass.c to use
these new functions. However they are not quite the same. For example,
disk_blk_read() adds the partition offset to 'start' when calling the
cache read/fill functions, but does not with part_blk_read(), which does
the addition itself. So as designed the code is duplicated.
Signed-off-by: Simon Glass <sjg@chromium.org>
blk_first_device_err/blk_next_device_err uses
uclass_first_device_err/uclass_next_device_err for device iteration.
Although the function names superficially match the return value from
uclass_first_device_err/uclass_next_device_err is never used
meaningfully, and uclass_first_device/uclass_next_device works equally
well for this purpose.
In the following patch the semantic of
uclass_first_device_err/uclass_next_device_err will be changed to be
based on uclass_first_device_check/uclass_next_device_check breaking
this sole user that uses uclass_next_device_err for iteration.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Globally replace all occurances of WATCHDOG_RESET() with schedule(),
which handles the HW_WATCHDOG functionality and the cyclic
infrastructure.
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Rini <trini@konsulko.com> [am335x_evm, mx6cuboxi, rpi_3,dra7xx_evm, pine64_plus, am65x_evm, j721e_evm]
We currently have an if_type (interface type) and a uclass id. These are
closely related and we don't need to have both.
Drop the if_type values and use the uclass ones instead.
Maintain the existing, subtle, one-way conversion between UCLASS_USB and
UCLASS_MASS_STORAGE for now, and add a comment.
Signed-off-by: Simon Glass <sjg@chromium.org>
These are currently using a simple array lookup in one direction, and
relying on if_type being sequential.
With the move to uclass IDs this needs to change. Update the code to
prepare for the new way. This patch is intended to introduce no
functional change.
The returning of "(none)" from blk_get_if_type_name() is handling a case
that should not happen in either case.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present we use a variable with the same name as the enum. Change this
since we plan to #define the enum to uclass_id.
Signed-off-by: Simon Glass <sjg@chromium.org>
This doesn't seem to be used for anything and it isn't clear what it is.
It dates from the first U-Boot commit.
Drop it.
Signed-off-by: Simon Glass <sjg@chromium.org>
We don't want boards to be able to change these. They can be handled
as dependencies of options that need them, such as SPL_MMC. There is no
point in enabling the block interface without any storage devices to
create a block device.
Hide both options from the 'menuconfig' display and deny their use in
defconfig files.
Signed-off-by: Simon Glass <sjg@chromium.org>
Selecting this option can be handled in the Kconfig option itself, as it
is with BLK. Update this an drop the various 'select' clauses.
Signed-off-by: Simon Glass <sjg@chromium.org>
This option is fact really related to SPL. For U-Boot proper we always use
driver model for block devices, so CONFIG_BLK is enabled if block devices
are in use.
It is only for SPL that we have two cases:
- SPL_BLK is enabled, in which case we use driver model and blk-uclass.c
- SPL_BLK is not enabled, in which case (if we need block devices) we must
use blk_legacy.c
Rename the symbol to SPL_LEGACY_BLOCK to make this clear. This is
different enough from BLK and SPL_BLK that there should be no confusion.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present we use HAVE_BLOCK_DEVICE to indicate when block devices are
available.
This is a very strange option, since it partially duplicates the BLK
option used by driver model. It also covers both U-Boot proper and SPL,
even though one might have block devices and another not.
As a first step towards correcting this, create a new inline function
called blk_enabled() which indicates if block devices are available.
This cannot be used in Makefiles, or #if clauses, but can be used in C
code.
A function is useful because we cannot use CONFIG_IS_ENABLED(BLK) to
decide if block devices are needed, since we must consider the legacy
block interface, enabled by HAVE_BLOCK_DEVICE
Update a few places where it can be used and drop some unnecessary #if
checks around some functions in disk/part.c - rely on the compiler's
dead-code elimination instead.
Signed-off-by: Simon Glass <sjg@chromium.org>
Enable this option on all boards which support block devices. Drop the
related depencies on BLK since these are not needed anymore.
Disable BLOCK_CACHE on M5253DEMO as this causes a build error.
Signed-off-by: Simon Glass <sjg@chromium.org>
The only platform currently that defines an ide_preinit function has an
empty one that immediately returns. Remove this hook.
Signed-off-by: Tom Rini <trini@konsulko.com>
To quote the author:
The bootflow feature provide a built-in way for U-Boot to automatically
boot an Operating System without custom scripting and other customisation.
This is called 'standard boot' since it provides a standard way for
U-Boot to boot a distro, without scripting.
It introduces the following concepts:
- bootdev - a device which can hold a distro
- bootmeth - a method to scan a bootdev to find bootflows (owned by
U-Boot)
- bootflow - a description of how to boot (owned by the distro)
This series provides an implementation of these, enabled to scan for
bootflows from MMC, USB and Ethernet. It supports the existing distro
boot as well as the EFI loader flow (bootefi/bootmgr). It works
similiarly to the existing script-based approach, but is native to
U-Boot.
With this we can boot on a Raspberry Pi 3 with just one command:
bootflow scan -lb
which means to scan, listing (-l) each bootflow and trying to boot each
one (-b). The final patch shows this.
With a standard way to identify boot devices, booting become easier. It
also should be possible to support U-Boot scripts, for backwards
compatibility only.
...
The design is described in these two documents:
https://drive.google.com/file/d/1ggW0KJpUOR__vBkj3l61L2dav4ZkNC12/view?usp=sharinghttps://drive.google.com/file/d/1kTrflO9vvGlKp-ZH_jlgb9TY3WYG6FF9/view?usp=sharing
Now that all the block device drivers have enable a probe hook, we will
call part_create_block_devices() to enumerate all the partitions and
create associated udevices when a block device is detected.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Every time an ide bus/port is scanned and a new device is detected,
we want to call device_probe() as it will give us a chance to run
additional post-processings for some purposes.
In particular, support for creating partitions on a device will be added.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Some files cannot be written but read-only access is still useful for
tests. Add a fallback to read-only access when needed.
This is useful in CI when opening a large data file provided by docker,
where read/write access would result in copying the file, thus needing
a lot of extra disk space.
Signed-off-by: Simon Glass <sjg@chromium.org>
This converts the following to Kconfig:
CONFIG_SYS_IDE_MAXBUS
CONFIG_SYS_IDE_MAXDEVICE
CONFIG_SYS_ATA_BASE_ADDR
CONFIG_SYS_ATA_STRIDE
CONFIG_SYS_ATA_DATA_OFFSET
CONFIG_SYS_ATA_REG_OFFSET
CONFIG_SYS_ATA_ALT_OFFSET
CONFIG_SYS_ATA_IDE0_OFFSET
CONFIG_SYS_ATA_IDE1_OFFSET
CONFIG_ATAPI
CONFIG_IDE_RESET
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
This function will be commonly used in block device drivers
in the succeeding patches.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Add a block driver which handles read/write for EFI block devices. This
driver actually already exists ('efi_block') but is not really suitable
for use as a real U-Boot driver:
- The operations do not provide a udevice
- The code is designed for running as part of EFI loader, so uses
EFI_PRINT() and EFI_CALL().
- The bind method probes the device, which is not permitted
- It uses 'EFI' as its parent device
The new driver is more 'normal', just requiring its platform data be set
up in advance.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
UCLASS_EFI_LOADER is used for devices created by applications and
drivers loaded by U-Boots UEFI implementation.
This patch provides a new uclass (UCLASS_EFI_MEDIA) to be used for devices
that provided by a UEFI firmware calling U-Boot as an EFI application.
If the two uclasses can be unified, is left to future redesign.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
These names are better used for access to devices provided by an EFI
layer. Use EFI_LOADER instead here, since these are only available in
U-Boot's EFI_LOADER layer.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This is not needed anymore. Drop it to simplify the code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Suggested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
