kern: finish implementing assembly init routines

libraries/libmesosphere/include/mesosphere/arch/arm64/init/kern_k_init_arguments.hpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2018-2019 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
+
+namespace ams::kern::init {
+
+    struct KInitArguments {
+        u64 ttbr0;
+        u64 ttbr1;
+        u64 tcr;
+        u64 mair;
+        u64 cpuactlr;
+        u64 cpuectlr;
+        u64 sctlr;
+        u64 sp;
+        u64 entrypoint;
+        u64 argument;
+        u64 setup_function;
+    };
+
+}

libraries/libmesosphere/include/mesosphere/arch/arm64/init/kern_k_init_page_table.hpp

@@ -495,4 +495,31 @@ namespace ams::kern::init {
 
     };
 
+    class KInitialPageAllocator : public KInitialPageTable::IPageAllocator {
+        private:
+            uintptr_t next_address;
+        public:
+            constexpr ALWAYS_INLINE KInitialPageAllocator() : next_address(Null<uintptr_t>) { /* ... */ }
+
+            ALWAYS_INLINE void Initialize(uintptr_t address) {
+                this->next_address = address;
+            }
+
+            ALWAYS_INLINE uintptr_t GetFinalState() {
+                const uintptr_t final_address = this->next_address;
+                this->next_address = Null<uintptr_t>;
+                return final_address;
+            }
+        public:
+            virtual KPhysicalAddress Allocate() override {
+                MESOSPHERE_ABORT_UNLESS(this->next_address != Null<uintptr_t>);
+                const uintptr_t allocated = this->next_address;
+                this->next_address += PageSize;
+                std::memset(reinterpret_cast<void *>(allocated), 0, PageSize);
+                return allocated;
+            }
+
+            /* No need to override free. The default does nothing, and so would we. */
+    };
+
 }

libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu.hpp

@@ -19,6 +19,19 @@
 
 namespace ams::kern::arm64::cpu {
 
+#if defined(ATMOSPHERE_CPU_ARM_CORTEX_A57) || defined(ATMOSPHERE_CPU_ARM_CORTEX_A53)
+    constexpr inline size_t InstructionCacheLineSize = 0x40;
+    constexpr inline size_t DataCacheLineSize        = 0x40;
+#else
+    #error "Unknown CPU for cache line sizes"
+#endif
+
+#if defined(ATMOSPHERE_BOARD_NINTENDO_SWITCH)
+    static constexpr size_t NumCores = 4;
+#else
+    #error "Unknown Board for cpu::NumCores"
+#endif
+
     /* Helpers for managing memory state. */
     ALWAYS_INLINE void DataSynchronizationBarrier() {
         __asm__ __volatile__("dsb sy" ::: "memory");