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dtoc: Add a 64-bit type and a way to convert cells into 64 bits

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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>
This commit is contained in:
Simon Glass
2017-08-29 14:15:48 -06:00
parent 979ab02473
commit fbdfd228fb
3 changed files with 18 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
tools/dtoc/dtb_platdata.py
View File

@@ -38,6 +38,7 @@ TYPE_NAMES = {
fdt.TYPE_BYTE: 'unsigned char', fdt.TYPE_BYTE: 'unsigned char',
fdt.TYPE_STRING: 'const char *', fdt.TYPE_STRING: 'const char *',
fdt.TYPE_BOOL: 'bool', fdt.TYPE_BOOL: 'bool',
fdt.TYPE_INT64: 'fdt64_t',
} }
STRUCT_PREFIX = 'dtd_' STRUCT_PREFIX = 'dtd_'
@@ -95,6 +96,8 @@ def get_value(ftype, value):
return '"%s"' % value return '"%s"' % value
elif ftype == fdt.TYPE_BOOL: elif ftype == fdt.TYPE_BOOL:
return 'true' return 'true'
elif ftype == fdt.TYPE_INT64:
return '%#x' % value
def get_compat_name(node): def get_compat_name(node):
"""Get a node's first compatible string as a C identifier """Get a node's first compatible string as a C identifier

2
tools/dtoc/fdt.py
View File

@@ -21,7 +21,7 @@ import libfdt
# so it is fairly efficient. # so it is fairly efficient.
# A list of types we support # A list of types we support
(TYPE_BYTE, TYPE_INT, TYPE_STRING, TYPE_BOOL) = range(4) (TYPE_BYTE, TYPE_INT, TYPE_STRING, TYPE_BOOL, TYPE_INT64) = range(5)
def CheckErr(errnum, msg): def CheckErr(errnum, msg):
if errnum: if errnum:

14
tools/dtoc/fdt_util.py
View File

@@ -29,6 +29,20 @@ def fdt32_to_cpu(val):
val = val.encode('raw_unicode_escape') val = val.encode('raw_unicode_escape')
return struct.unpack('>I', val)[0] 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): def EnsureCompiled(fname):
"""Compile an fdt .dts source file into a .dtb binary blob if needed. """Compile an fdt .dts source file into a .dtb binary blob if needed.