x86: apl: fsp_bindings: Add support for u64 parameters
Add FSP_UINT64 read support as preparation for FSP-M and FSP-S parameter
update.
Signed-off-by: Bernhard Messerklinger <bernhard.messerklinger@br-automation.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/apollolake/fsp_bindings.c b/arch/x86/cpu/apollolake/fsp_bindings.c
index 9130af9..130366b 100644
--- a/arch/x86/cpu/apollolake/fsp_bindings.c
+++ b/arch/x86/cpu/apollolake/fsp_bindings.c
@@ -90,6 +90,28 @@
}
/**
+ * read_u64_prop() - Read an u64 property from devicetree (scalar or array)
+ * @node: Valid node reference to read property from
+ * @name: Name of the property to read from
+ * @count: If the property is expected to be an array, this is the
+ * number of expected elements
+ * set to 0 if the property is expected to be a scalar
+ * @dst: Pointer to destination of where to save the value(s) read
+ * from devicetree
+ */
+static int read_u64_prop(ofnode node, char *name, size_t count, u64 *dst)
+{
+ if (count == 0) {
+ ofnode_read_u64(node, name, dst);
+ } else {
+ debug("ERROR: %s u64 arrays not supported!\n", __func__);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/**
* read_string_prop() - Read a string property from devicetree
* @node: Valid node reference to read property from
* @name: Name of the property to read from
@@ -206,6 +228,12 @@
read_u32_prop(node, fspb->propname, fspb->count,
(u32 *)&cfg[fspb->offset]);
break;
+ case FSP_UINT64:
+ ret = read_u64_prop(node, fspb->propname, fspb->count,
+ (u64 *)&cfg[fspb->offset]);
+ if (ret)
+ return ret;
+ break;
case FSP_STRING:
read_string_prop(node, fspb->propname, fspb->count,
(char *)&cfg[fspb->offset]);
diff --git a/arch/x86/include/asm/arch-apollolake/fsp_bindings.h b/arch/x86/include/asm/arch-apollolake/fsp_bindings.h
index b493951..a80e66b 100644
--- a/arch/x86/include/asm/arch-apollolake/fsp_bindings.h
+++ b/arch/x86/include/asm/arch-apollolake/fsp_bindings.h
@@ -17,6 +17,7 @@
FSP_UINT8,
FSP_UINT16,
FSP_UINT32,
+ FSP_UINT64,
FSP_STRING,
FSP_LPDDR4_SWIZZLE,
};