1 files changed, 105 insertions, 0 deletions
diff --git a/tools/src/tunables_static.c b/tools/src/tunables_static.c
new file mode 100644
index 0000000..e569e6b
--- /dev/null
+++ b/tools/src/tunables_static.c
@@ -0,0 +1,105 @@
+/* SPDX-License-Identifier: MIT */
+
+#include "tunables.h"
+#include "adt.h"
+#include "pmgr.h"
+#include "soc.h"
+#include "types.h"
+#include "utils.h"
+
+/*
+ * These magic tunable sequences are hardcoded in various places in XNU, and are required for
+ * proper operation of various fabric features and other miscellanea. Without them, things tend
+ * to subtly break...
+ */
+
+struct entry {
+    u32 offset;
+    u32 clear;
+    u32 set;
+};
+
+struct entry t8103_agx_tunables[] = {
+    {0x30, 0xffffffff, 0x50014},     {0x34, 0xffffffff, 0xa003c},
+    {0x400, 0x400103ff, 0x40010001}, {0x600, 0x1ffffff, 0x1ffffff},
+    {0x738, 0x1ff01ff, 0x140034},    {0x798, 0x1ff01ff, 0x14003c},
+    {0x800, 0x100, 0x100},           {-1, 0, 0},
+};
+
+// TODO: check masks
+struct entry t600x_agx_tunables[] = {
+    {0x0, 0x1, 0x1},
+    {0x10, 0xfff0000, 0xd0000},
+    {0x14, 0x3, 0x1},
+    {0x18, 0x3, 0x1},
+    {0x1c, 0x3, 0x3},
+    {0x20, 0x3, 0x3},
+    {0x24, 0x3, 0x3},
+    {0x28, 0x3, 0x3},
+    {0x2c, 0x3, 0x3},
+    {0x400, 0x400103ff, 0x40010001},
+    {0x600, 0x1ffffff, 0x1ffffff},
+    {0x800, 0x100, 0x100},
+    {-1, 0, 0},
+};
+
+// TODO: check masks
+struct entry t8112_agx_tunables[] = {
+    {0x0, 0x200, 0x200},
+    {0x34, 0xffffffff, 0x50014},
+    {0x38, 0xffffffff, 0xa003c},
+    {0x400, 0xc00103ff, 0xc0010001},
+    {0x600, 0x1ffffff, 0x1ffffff},
+    {0x738, 0x1ff01ff, 0x14003c},
+    {0x798, 0x1ff01ff, 0x14003c},
+    {0x800, 0x100, 0x100},
+    {-1, 0, 0},
+};
+
+static void tunables_apply(u64 base, struct entry *entry)
+{
+    while (entry->offset != UINT32_MAX) {
+        mask32(base + entry->offset, entry->clear, entry->set);
+        entry++;
+    }
+}
+
+int power_and_apply(const char *path, u64 base, struct entry *entries)
+{
+    if (pmgr_adt_power_enable(path) < 0) {
+        printf("tunables: Failed to enable power: %s\n", path);
+        return -1;
+    }
+
+    tunables_apply(base, entries);
+
+    if (pmgr_adt_power_disable(path) < 0) {
+        printf("tunables: Failed to disable power: %s\n", path);
+        return -1;
+    }
+
+    return 0;
+}
+
+int tunables_apply_static(void)
+{
+    int ret = 0;
+
+    switch (chip_id) {
+        case T8103:
+            ret |= power_and_apply("/arm-io/sgx", 0x205000000, t8103_agx_tunables);
+            break;
+        case T8112:
+            ret |= power_and_apply("/arm-io/sgx", 0x205000000, t8112_agx_tunables);
+            break;
+        case T6000:
+        case T6001:
+        case T6002:
+            ret |= power_and_apply("/arm-io/sgx", 0x405000000, t600x_agx_tunables);
+            break;
+        default:
+            break;
+    }
+
+    return ret ? -1 : 0;
+}