mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-28 04:48:52 +09:00
![Simon Glass](/assets/img/avatar_default.png)
In many cases SPL only uses a single serial port and there is no need for alias sequence support. We will just use the serial port pointed to by stdout-path in the /chosen node. Signed-off-by: Simon Glass <sjg@chromium.org>
58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
config DM
|
|
bool "Enable Driver Model"
|
|
help
|
|
This config option enables Driver Model. This brings in the core
|
|
support, including scanning of platform data on start-up. If
|
|
CONFIG_OF_CONTROL is enabled, the device tree will be scanned also
|
|
when available.
|
|
|
|
config SPL_DM
|
|
bool "Enable Driver Model for SPL"
|
|
depends on DM && SPL
|
|
help
|
|
Enable driver model in SPL. You will need to provide a
|
|
suitable malloc() implementation. If you are not using the
|
|
full malloc() enabled by CONFIG_SYS_SPL_MALLOC_START,
|
|
consider using CONFIG_SYS_MALLOC_SIMPLE. In that case you
|
|
must provide CONFIG_SYS_MALLOC_F_LEN to set the size.
|
|
In most cases driver model will only allocate a few uclasses
|
|
and devices in SPL, so 1KB should be enable. See
|
|
CONFIG_SYS_MALLOC_F_LEN for more details on how to enable it.
|
|
|
|
config DM_WARN
|
|
bool "Enable warnings in driver model"
|
|
depends on DM
|
|
default y
|
|
help
|
|
The dm_warn() function can use up quite a bit of space for its
|
|
strings. By default this is disabled for SPL builds to save space.
|
|
This will cause dm_warn() to be compiled out - it will do nothing
|
|
when called.
|
|
|
|
config DM_DEVICE_REMOVE
|
|
bool "Support device removal"
|
|
depends on DM
|
|
default y
|
|
help
|
|
We can save some code space by dropping support for removing a
|
|
device. This is not normally required in SPL, so by default this
|
|
option is disabled for SPL.
|
|
|
|
config DM_STDIO
|
|
bool "Support stdio registration"
|
|
depends on DM
|
|
default y
|
|
help
|
|
Normally serial drivers register with stdio so that they can be used
|
|
as normal output devices. In SPL we don't normally use stdio, so
|
|
we can omit this feature.
|
|
|
|
config DM_SEQ_ALIAS
|
|
bool "Support numbered aliases in device tree"
|
|
depends on DM
|
|
default y
|
|
help
|
|
Most boards will have a '/aliases' node containing the path to
|
|
numbered devices (e.g. serial0 = &serial0). This feature can be
|
|
disabled if it is not required, to save code space in SPL.
|