arm64: System info fixes

* Implement arch_fill_topology_node
* Change uname to return 'arm64' in utsname.machine instead 
  of 'aarch64' to match what is used for packages (otherwise,
  on startup, package daemon thinks every package has the
  wrong architecture)

Change-Id: Ibba8784fca826023e0e13fef4222bdba6a6a6964
Reviewed-on: https://review.haiku-os.org/c/haiku/+/10684
Reviewed-by: waddlesplash <[email protected]>

src/system/kernel/arch/arm64/arch_system_info.cpp

@@ -9,16 +9,24 @@
 #include <boot/kernel_args.h>
 
 
-status_t
-arch_get_system_info(system_info *info, size_t size)
-{
-	return B_OK;
-}
-
-
 void
 arch_fill_topology_node(cpu_topology_node_info* node, int32 cpu)
 {
+	switch (node->type) {
+		case B_TOPOLOGY_ROOT:
+			node->data.root.platform = B_CPU_ARM_64;
+			break;
+		case B_TOPOLOGY_PACKAGE:
+			node->data.package.vendor = B_CPU_VENDOR_UNKNOWN;
+			node->data.package.cache_line_size = CACHE_LINE_SIZE;
+			break;
+		case B_TOPOLOGY_CORE:
+			node->data.core.model = 0;
+			node->data.core.default_frequency = 0;
+			break;
+		default:
+			break;
+	}
 }
 
 

src/system/libroot/posix/sys/uname.c

@@ -84,7 +84,7 @@ uname(struct utsname *info)
 				platform = "arm";
 				break;
 			case B_CPU_ARM_64:
-				platform = "aarch64";
+				platform = "arm64";
 				break;
 			case B_CPU_RISC_V:
 				platform = "riscv64";