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Diffstat (limited to 'doc/usage/fit/kernel_fdts_compressed.rst')
| -rw-r--r-- | doc/usage/fit/kernel_fdts_compressed.rst | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/doc/usage/fit/kernel_fdts_compressed.rst b/doc/usage/fit/kernel_fdts_compressed.rst new file mode 100644 index 00000000000..0b169c7c27c --- /dev/null +++ b/doc/usage/fit/kernel_fdts_compressed.rst @@ -0,0 +1,77 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +Kernel and multiple compressed FDT blobs +======================================== + +Since the FDTs are compressed, configurations must provide a compatible +string to match directly. + +:: + + /dts-v1/; + + / { + description = "Image with single Linux kernel and compressed FDT blobs"; + #address-cells = <1>; + + images { + kernel { + description = "Vanilla Linux kernel"; + data = /incbin/("./vmlinux.bin.gz"); + type = "kernel"; + arch = "ppc"; + os = "linux"; + compression = "gzip"; + load = <00000000>; + entry = <00000000>; + hash-1 { + algo = "crc32"; + }; + hash-2 { + algo = "sha1"; + }; + }; + fdt@1 { + description = "Flattened Device Tree blob 1"; + data = /incbin/("./myboard-var1.dtb"); + type = "flat_dt"; + arch = "ppc"; + compression = "gzip"; + hash-1 { + algo = "crc32"; + }; + hash-2 { + algo = "sha1"; + }; + }; + fdt@2 { + description = "Flattened Device Tree blob 2"; + data = /incbin/("./myboard-var2.dtb"); + type = "flat_dt"; + arch = "ppc"; + compression = "lzma"; + hash-1 { + algo = "crc32"; + }; + hash-2 { + algo = "sha1"; + }; + }; + }; + + configurations { + default = "conf@1"; + conf@1 { + description = "Boot Linux kernel with FDT blob 1"; + kernel = "kernel"; + fdt = "fdt@1"; + compatible = "myvendor,myboard-variant1"; + }; + conf@2 { + description = "Boot Linux kernel with FDT blob 2"; + kernel = "kernel"; + fdt = "fdt@2"; + compatible = "myvendor,myboard-variant2"; + }; + }; + }; |
