config SUPPORT_OF_CONTROL
bool
+config DTC
+ bool
+
+config PYLIBFDT
+ bool
+
+config DTOC
+ bool
+ select PYLIBFDT
+
+config BINMAN
+ bool
+ select DTOC
+
menu "Device Tree Control"
depends on SUPPORT_OF_CONTROL
config OF_CONTROL
bool "Run-time configuration via Device Tree"
+ select DTC
help
This feature provides for run-time configuration of U-Boot
via a flattened device tree.
config OF_LIST
string "List of device tree files to include for DT control"
- depends on SPL_LOAD_FIT || FIT_EMBED
+ depends on SPL_LOAD_FIT || MULTI_DTB_FIT
default DEFAULT_DEVICE_TREE
help
This option specifies a list of device tree files to use for DT
device tree files (without the directory or .dtb suffix)
separated by <space>.
+
+config DTB_RESELECT
+ bool "Support swapping dtbs at a later point in boot"
+ depends on MULTI_DTB_FIT
+ help
+ It is possible during initial boot you may need to use a generic
+ dtb until you can fully determine the board your running on. This
+ config allows boards to implement a function at a later point
+ during boot to switch to the "correct" dtb.
+
+config MULTI_DTB_FIT
+ bool "Support embedding several DTBs in a FIT image for u-boot"
+ help
+ This option provides hooks to allow U-boot to parse an
+ appended FIT image and enable board specific code to then select
+ the correct DTB to be used. Use this if you need to support
+ multiple DTBs but don't use the SPL.
+
+
+config SPL_MULTI_DTB_FIT
+ depends on SPL_LOAD_FIT && SPL_OF_CONTROL && !SPL_OF_PLATDATA
+ bool "Support embedding several DTBs in a FIT image for the SPL"
+ help
+ This option provides the SPL with the ability to select its own
+ DTB at runtime from an appended FIT image containing several DTBs.
+ This allows using the same SPL binary on multiple platforms.
+ The primary purpose is to handle different versions of
+ the same platform without tweaking the platform code if the
+ differences can be expressed in the DTBs (common examples are: bus
+ capabilities, pad configurations).
+
+config SPL_OF_LIST
+ string "List of device tree files to include for DT control in SPL"
+ depends on SPL_MULTI_DTB_FIT
+ default OF_LIST
+ help
+ This option specifies a list of device tree files to use for DT
+ control in the SPL. These will be packaged into a FIT. At run-time,
+ the SPL will select the correct DT to use by examining the
+ hardware (e.g. reading a board ID value). This is a list of
+ device tree files (without the directory or .dtb suffix)
+ separated by <space>.
+
+choice
+ prompt "SPL OF LIST compression"
+ depends on SPL_MULTI_DTB_FIT
+ default SPL_MULTI_DTB_FIT_LZO
+
+config SPL_MULTI_DTB_FIT_LZO
+ bool "LZO"
+ depends on SYS_MALLOC_F
+ select SPL_LZO
+ help
+ Compress the FIT image containing the DTBs available for the SPL
+ using LZO compression. (requires lzop on host).
+
+config SPL_MULTI_DTB_FIT_GZIP
+ bool "GZIP"
+ depends on SYS_MALLOC_F
+ select SPL_GZIP
+ help
+ Compress the FIT image containing the DTBs available for the SPL
+ using GZIP compression. (requires gzip on host)
+
+config SPL_MULTI_DTB_FIT_NO_COMPRESSION
+ bool "No compression"
+ help
+ Do not compress the FIT image containing the DTBs available for the SPL.
+ Use this options only if LZO is not available and the DTBs are very small.
+endchoice
+
+choice
+ prompt "Location of uncompressed DTBs "
+ depends on (SPL_MULTI_DTB_FIT_GZIP || SPL_MULTI_DTB_FIT_LZO)
+ default SPL_MULTI_DTB_FIT_DYN_ALLOC if SYS_MALLOC_F
+
+config SPL_MULTI_DTB_FIT_DYN_ALLOC
+ bool "Dynamically allocate the memory"
+ depends on SYS_MALLOC_F
+
+config SPL_MULTI_DTB_FIT_USER_DEFINED_AREA
+ bool "User-defined location"
+endchoice
+
+config SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ
+ hex "Size of memory reserved to uncompress the DTBs"
+ depends on (SPL_MULTI_DTB_FIT_GZIP || SPL_MULTI_DTB_FIT_LZO)
+ default 0x8000
+ help
+ This is the size of this area where the DTBs are uncompressed.
+ If this area is dynamically allocated, make sure that
+ SPL_SYS_MALLOC_F_LEN is big enough to contain it.
+
+config SPL_MULTI_DTB_FIT_USER_DEF_ADDR
+ hex "Address of memory where dtbs are uncompressed"
+ depends on SPL_MULTI_DTB_FIT_USER_DEFINED_AREA
+ help
+ the FIT image containing the DTBs is uncompressed in an area defined
+ at compilation time. This is the address of this area. It must be
+ aligned on 2-byte boundary.
+
config OF_SPL_REMOVE_PROPS
string "List of device tree properties to drop for SPL"
depends on SPL_OF_CONTROL
config SPL_OF_PLATDATA
bool "Generate platform data for use in SPL"
depends on SPL_OF_CONTROL
+ select DTOC
help
For very constrained SPL environments the overhead of decoding
device tree nodes and converting their contents into platform data
config TPL_OF_PLATDATA
bool "Generate platform data for use in TPL"
depends on TPL_OF_CONTROL
+ select DTOC
help
For very constrained SPL environments the overhead of decoding
device tree nodes and converting their contents into platform data
information.
endmenu
+
+config MKIMAGE_DTC_PATH
+ string "Path to dtc binary for use within mkimage"
+ default "dtc"
+ help
+ The mkimage host tool will, in order to generate FIT images make
+ calls to the dtc application in order to create the output. In
+ some cases the system dtc may not support all required features
+ and the path to a different version should be given here.
projects / people / ms / u-boot.git / blobdiff