Finish bootup_misc_mmio() - Cur build gets to end of pk2ldr.

exosphere/src/actmon.c

@@ -0,0 +1,24 @@
+#include <stdint.h>
+
+#include "utils.h"
+#include "actmon.h"
+
+static void (*g_actmon_callback)(void) = NULL;
+
+void actmon_set_callback(void (*callback)(void)) {
+    g_actmon_callback = callback;
+}
+
+void actmon_on_bpmp_wakeup(void) {
+    /* This gets set as the actmon interrupt handler on 4.x. */
+    panic(0xF0A00036);
+}
+
+void actmon_interrupt_handler(void) {
+    ACTMON_COP_CTRL_0 = 0;
+    ACTMON_COP_INTR_STATUS_0 = ACTMON_COP_INTR_STATUS_0;
+    if (g_actmon_callback != NULL) {
+        g_actmon_callback();
+        g_actmon_callback = NULL;
+    }
+}