If "numa-node-id" is specified in a memory node,
take node 0 as system memory instead of taking
the first memory node.
Cc: YJ Chiang <yj.chi...@medaitek.com>
Signed-off-by: Mark-PK Tsai <mark-pk.t...@mediatek.com>
---
ArmVirtPkg/PrePi/FdtParser.c | 32 ++++++++++++++++++++++++++++----
1 file changed, 28 insertions(+), 4 deletions(-)
diff --git a/ArmVirtPkg/PrePi/FdtParser.c b/ArmVirtPkg/PrePi/FdtParser.c
index 5a91f7e62d..5c7de3bc31 100644
--- a/ArmVirtPkg/PrePi/FdtParser.c
+++ b/ArmVirtPkg/PrePi/FdtParser.c
@@ -19,19 +19,43 @@ FindMemnode (
INT32 SizeCells;
INT32 Length;
CONST INT32 *Prop;
+ INT32 NumaId;
+ INT32 Node, Prev;
+ CONST CHAR8 *Type;
if (fdt_check_header (DeviceTreeBlob) != 0) {
return FALSE;
}
//
- // Look for a node called "memory" at the lowest level of the tree
+ // Look for the lowest memory node.
+ // On Numa system, use node 0 as system memory.
//
- MemoryNode = fdt_path_offset (DeviceTreeBlob, "/memory");
- if (MemoryNode <= 0) {
- return FALSE;
+ MemoryNode = -1;
+ NumaId = -1;
+
+ for (Prev = 0; ; Prev = Node) {
+ Node = fdt_next_node (DeviceTreeBlob, Prev, NULL);
+ if (Node < 0)
+ break;
+
+ Type = fdt_getprop (DeviceTreeBlob, Node, "device_type", &Length);
+ if (Type && (AsciiStrnCmp (Type, "memory", Length) == 0)) {
+ Prop = fdt_getprop (DeviceTreeBlob, Node, "numa-node-id", &Length);
+ if (Prop && Length == 4) {
+ NumaId = fdt32_to_cpu (*Prop);
+ }
+
+ if (!Prop || (Prop && NumaId == 0)) {
+ MemoryNode = Node;
+ break;
+ }
+ }
}
+ if (MemoryNode < 0)
+ return FALSE;
+
//
// Retrieve the #address-cells and #size-cells properties
// from the root node, or use the default if not provided.
--
2.32.0
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