diff options
author | Simon Glass <sjg@chromium.org> | 2017-08-29 14:15:48 -0600 |
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committer | Simon Glass <sjg@chromium.org> | 2017-09-15 05:24:39 -0600 |
commit | fbdfd228fb7bcdd16ddca3e081b1cc1d8205702b (patch) | |
tree | c389840202f88a8252c975d678a1a80199121b50 /tools/dtoc/fdt_util.py | |
parent | 979ab02473e578b81ad8ef7c3a844b789b48c40d (diff) |
dtoc: Add a 64-bit type and a way to convert cells into 64 bits
When dealing with multi-cell values we need a type that can hold this
value. Add this and a function to process it from a list of cell values.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'tools/dtoc/fdt_util.py')
-rw-r--r-- | tools/dtoc/fdt_util.py | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/dtoc/fdt_util.py b/tools/dtoc/fdt_util.py index b9dfae8d0e..bec6ee947a 100644 --- a/tools/dtoc/fdt_util.py +++ b/tools/dtoc/fdt_util.py @@ -29,6 +29,20 @@ def fdt32_to_cpu(val): val = val.encode('raw_unicode_escape') return struct.unpack('>I', val)[0] +def fdt_cells_to_cpu(val, cells): + """Convert one or two cells to a long integer + + Args: + Value to convert (array of one or more 4-character strings) + + Return: + A native-endian long value + """ + out = long(fdt32_to_cpu(val[0])) + if cells == 2: + out = out << 32 | fdt32_to_cpu(val[1]) + return out + def EnsureCompiled(fname): """Compile an fdt .dts source file into a .dtb binary blob if needed. |