thermosphere: major refactor of memory map

- use recursive stage 1 page table (thanks @fincs for this idea)
- NULL now unmapped
- no identity mapping
- image + GICv2 now mapped at the same address for every platform
- tempbss mapped just after "real" bss, can now steal unused mem from
the latter
- no hardcoded VAs for other MMIO devices
- tegra: remove timers, use the generic timer instead

thermosphere/src/platform/qemu/devices.c

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2019 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "devices.h"
+#include "../../memory_map.h"
+#include "../../utils.h"
+
+#include "uart.h"
+
+void devicesMapAllExtra(void)
+{
+    uartSetRegisterBase(memoryMapPlatformMmio(MEMORY_MAP_PA_UART, 0x1000));
+
+    // Don't broadcast, since it's only ran once per boot by only one core, before the others are started...
+    __tlb_invalidate_el2_local();
+    __dsb();
+    __isb();
+}