Add generic function to extend/fixup machine compatible.
Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
---
common/oftree.c | 30 ++++++++++++++++++++++++++++++
include/of.h | 6 ++++++
2 files changed, 36 insertions(+)
diff --git a/common/oftree.c b/common/oftree.c
index c6d75055cc..0a66882946 100644
--- a/common/oftree.c
+++ b/common/oftree.c
@@ -487,3 +487,33 @@ int of_autoenable_i2c_by_component(char *path)
return ret;
}
+
+int of_fixup_machine_compatible(struct device_node *root, const char *compat)
+{
+ int cclen = 0, clen = strlen(compat) + 1;
+ const char *curcompat;
+ void *buf;
+
+ if (!root) {
+ root = of_get_root_node();
+ if (!root)
+ return -ENODEV;
+ }
+
+ curcompat = of_get_property(root, "compatible", &cclen);
+
+ buf = xzalloc(cclen + clen);
+
+ memcpy(buf, compat, clen);
+ memcpy(buf + clen, curcompat, cclen);
+
+ /*
+ * Prepend the compatible from board entry to the machine compatible.
+ * Used to match bootspec entries against it.
+ */
+ of_set_property(root, "compatible", buf, cclen + clen, true);
+
+ free(buf);
+
+ return 0;
+}
diff --git a/include/of.h b/include/of.h
index cf9950e9b3..9f514c5ec2 100644
--- a/include/of.h
+++ b/include/of.h
@@ -316,6 +316,7 @@ struct device_node *of_find_node_by_path_or_alias(struct device_node *root,
const char *str);
int of_autoenable_device_by_path(char *path);
int of_autoenable_i2c_by_component(char *path);
+int of_fixup_machine_compatible(struct device_node *root, const char *compat);
#else
static inline bool of_node_name_eq(const struct device_node *np, const char *name)
{
@@ -834,6 +835,11 @@ static inline int of_autoenable_i2c_by_component(char *path)
return -ENODEV;
}
+static int of_fixup_machine_compatible(struct device_node *root,
+ const char *compat)
+{
+ return -ENODEV;
+}
#endif
--
2.30.2
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