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
2020-01-17 22:10:26 +00:00
parent 92a291cd41
commit 626f0ecb98
47 changed files with 795 additions and 469 deletions
--- a/thermosphere/src/memory_map.h
+++ b/thermosphere/src/memory_map.h
@@ -0,0 +1,64 @@
+/*
+ * 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/>.
+ */
+
+#pragma once
+
+#include "utils.h"
+
+#define MEMORY_MAP_MEMTYPE_DEVICE_NGNRNE                0ul
+#define MEMORY_MAP_MEMTYPE_NORMAL                       1ul
+#define MEMORY_MAP_MEMTYPE_DEVICE_NGNRE                 2ul
+#define MEMORY_MAP_MEMTYPE_NORMAL_UNCACHEABLE           3ul
+
+#define MEMORY_MAP_VA_SPACE_SIZE                        39ul
+
+// The following few definitions depend on the value of MEMORY_MAP_VA_SPACE_SIZE:
+#define MEMORY_MAP_SELF_L2_VA_RANGE                     0x7FC0000000ul // = 511 << 31
+#define MEMORY_MAP_SELF_L3_VA_RANGE                     0x7FFFE00000ul // = 511 << 31 | 511 << 21
+#define MEMORY_MAP_VA_TTBL                              0x7FFFFFF000ul // = 511 << 31 | 511 << 21 | 511 << 12
+#define MEMORY_MAP_VA_MAX                               0x7FFFFFFFFFul // = all 39 bits set
+
+#define MEMORY_MAP_VA_CRASH_STACKS_SIZE                 0x1000ul
+#define MEMORY_MAP_VA_IMAGE                             (MEMORY_MAP_SELF_L3_VA_RANGE + 0x10000)
+#define MEMORY_MAP_VA_CRASH_STACKS_BOTTOM               (MEMORY_MAP_SELF_L3_VA_RANGE + 0x40000)
+#define MEMORY_MAP_VA_CRASH_STACKS_TOP                  (MEMORY_MAP_SELF_L3_VA_RANGE + 0x41000)
+#define MEMORY_MAP_VA_GUEST_MEM                         (MEMORY_MAP_SELF_L3_VA_RANGE + 0x50000)
+#define MEMORY_MAP_VA_STACKS_TOP                        (MEMORY_MAP_SELF_L3_VA_RANGE + 0x80000)
+
+#define MEMORY_MAP_VA_MMIO_BASE                         MEMORY_MAP_VA_STACKS_TOP
+#define MEMORY_MAP_VA_GICD                              MEMORY_MAP_VA_MMIO_BASE
+#define MEMORY_MAP_VA_GICC                              (MEMORY_MAP_VA_MMIO_BASE + 0x1000)
+#define MEMORY_MAP_VA_GICH                              (MEMORY_MAP_VA_MMIO_BASE + 0x3000)
+
+#define MEMORY_MAP_VA_MMIO_PLAT_BASE                    (MEMORY_MAP_VA_MMIO_BASE + 0x90000)
+
+
+typedef struct LoadImageLayout {
+    uintptr_t startPa;
+    size_t maxImageSize;
+    size_t imageSize; // "image" includes "real" BSS but not tempbss
+
+    uintptr_t tempPa;
+    size_t maxTempSize;
+    size_t tempSize;
+
+    uintptr_t vbar;
+} LoadImageLayout;
+
+extern LoadImageLayout g_loadImageLayout;
+
+// Non-reentrant
+uintptr_t memoryMapPlatformMmio(uintptr_t pa, size_t size);