1 files changed, 78 insertions, 0 deletions
diff --git a/src/Ryujinx.HLE/HOS/Kernel/Common/KSystemControl.cs b/src/Ryujinx.HLE/HOS/Kernel/Common/KSystemControl.cs
new file mode 100644
index 00000000..8a727c30
--- /dev/null
+++ b/src/Ryujinx.HLE/HOS/Kernel/Common/KSystemControl.cs
@@ -0,0 +1,78 @@
+using Ryujinx.HLE.HOS.Kernel.Memory;
+using System;
+
+namespace Ryujinx.HLE.HOS.Kernel.Common
+{
+    static class KSystemControl
+    {
+        private const ulong KiB = 1024;
+        private const ulong MiB = 1024 * KiB;
+        private const ulong GiB = 1024 * MiB;
+
+        private const ulong PageSize = 4 * KiB;
+
+        private const ulong RequiredNonSecureSystemPoolSizeVi = 0x2238 * PageSize;
+        private const ulong RequiredNonSecureSystemPoolSizeNvservices = 0x710 * PageSize;
+        private const ulong RequiredNonSecureSystemPoolSizeOther = 0x80 * PageSize;
+
+        private const ulong RequiredNonSecureSystemPoolSize =
+            RequiredNonSecureSystemPoolSizeVi +
+            RequiredNonSecureSystemPoolSizeNvservices +
+            RequiredNonSecureSystemPoolSizeOther;
+
+        public static ulong GetApplicationPoolSize(MemoryArrange arrange)
+        {
+            return arrange switch
+            {
+                MemoryArrange.MemoryArrange4GiB or
+                MemoryArrange.MemoryArrange4GiBSystemDev or
+                MemoryArrange.MemoryArrange6GiBAppletDev => 3285 * MiB,
+                MemoryArrange.MemoryArrange4GiBAppletDev => 2048 * MiB,
+                MemoryArrange.MemoryArrange6GiB or
+                MemoryArrange.MemoryArrange8GiB => 4916 * MiB,
+                _ => throw new ArgumentException($"Invalid memory arrange \"{arrange}\".")
+            };
+        }
+
+        public static ulong GetAppletPoolSize(MemoryArrange arrange)
+        {
+            return arrange switch
+            {
+                MemoryArrange.MemoryArrange4GiB => 507 * MiB,
+                MemoryArrange.MemoryArrange4GiBAppletDev => 1554 * MiB,
+                MemoryArrange.MemoryArrange4GiBSystemDev => 448 * MiB,
+                MemoryArrange.MemoryArrange6GiB => 562 * MiB,
+                MemoryArrange.MemoryArrange6GiBAppletDev or
+                MemoryArrange.MemoryArrange8GiB => 2193 * MiB,
+                _ => throw new ArgumentException($"Invalid memory arrange \"{arrange}\".")
+            };
+        }
+
+        public static ulong GetMinimumNonSecureSystemPoolSize()
+        {
+            return RequiredNonSecureSystemPoolSize;
+        }
+
+        public static ulong GetDramEndAddress(MemorySize size)
+        {
+            return DramMemoryMap.DramBase + GetDramSize(size);
+        }
+
+        public static ulong GenerateRandom()
+        {
+            // TODO
+            return 0;
+        }
+
+        public static ulong GetDramSize(MemorySize size)
+        {
+            return size switch
+            {
+                MemorySize.MemorySize4GiB => 4 * GiB,
+                MemorySize.MemorySize6GiB => 6 * GiB,
+                MemorySize.MemorySize8GiB => 8 * GiB,
+                _ => throw new ArgumentException($"Invalid memory size \"{size}\".")
+            };
+        }
+    }
+}
+\ No newline at end of file