spl: dm: Make it possible for the SPL to pick its own DTB from a FIT

[u-boot] / dts / Kconfig

diff --git a/dts/Kconfig b/dts/Kconfig
index 454acaaa3c73ad939c508dee1e2f9307e6be679d..daa757dd56631601faa437467ef26662e3ac97a9 100644 (file)
--- a/dts/Kconfig
+++ b/dts/Kconfig
@@ -130,6 +130,89 @@ config MULTI_DTB_FIT
          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