dtoc: Support ACPI paths in of-platdata
The start of an ACPI path typically has backslashes in it. These are not
preserved during the translation from device tree to C code, since dtc
(correctly) uses the first backslash as an escape character, and dtoc
therefore leaves it out of the C string.
Fix this with special-case handling.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/dtoc/dtb_platdata.py b/tools/dtoc/dtb_platdata.py
index c148c49..8ba8f16 100644
--- a/tools/dtoc/dtb_platdata.py
+++ b/tools/dtoc/dtb_platdata.py
@@ -104,7 +104,9 @@
elif ftype == fdt.TYPE_BYTE:
return '%#x' % tools.ToByte(value[0])
elif ftype == fdt.TYPE_STRING:
- return '"%s"' % value
+ # Handle evil ACPI backslashes by adding another backslash before them.
+ # So "\\_SB.GPO0" in the device tree effectively stays like that in C
+ return '"%s"' % value.replace('\\', '\\\\')
elif ftype == fdt.TYPE_BOOL:
return 'true'
elif ftype == fdt.TYPE_INT64:
diff --git a/tools/dtoc/dtoc_test_simple.dts b/tools/dtoc/dtoc_test_simple.dts
index 165680b..11bfc4c 100644
--- a/tools/dtoc/dtoc_test_simple.dts
+++ b/tools/dtoc/dtoc_test_simple.dts
@@ -34,6 +34,7 @@
longbytearray = [09 0a 0b 0c];
stringval = "message2";
stringarray = "another", "multi-word", "message";
+ acpi-name = "\\_SB.GPO0";
};
spl-test3 {
diff --git a/tools/dtoc/test_dtoc.py b/tools/dtoc/test_dtoc.py
index 3c8e343..08b02d4 100755
--- a/tools/dtoc/test_dtoc.py
+++ b/tools/dtoc/test_dtoc.py
@@ -72,6 +72,7 @@
@classmethod
def setUpClass(cls):
tools.PrepareOutputDir(None)
+ cls.maxDiff = None
@classmethod
def tearDownClass(cls):
@@ -188,6 +189,7 @@
\tfdt64_t\t\treg[2];
};
struct dtd_sandbox_spl_test {
+\tconst char * acpi_name;
\tbool\t\tboolval;
\tunsigned char\tbytearray[3];
\tunsigned char\tbyteval;
@@ -225,6 +227,7 @@
};
static struct dtd_sandbox_spl_test dtv_spl_test2 = {
+\t.acpi_name\t\t= "\\\\_SB.GPO0",
\t.bytearray\t\t= {0x1, 0x23, 0x34},
\t.byteval\t\t= 0x8,
\t.intarray\t\t= {0x5, 0x0, 0x0, 0x0},