exo2: Initial work on the exosphere rewrite.

exo2: Implement uncompressor stub and boot code up to Main(). exo2: implement some more init (uart/gic) exo2: implement more of init exo2: improve reg api, add keyslot flag setters exo2: implement se aes decryption/enc exo2: fix bugs in loader stub/mmu mappings exo2: start skeletoning bootconfig/global context types arch: fix makefile flags exo2: implement through master key derivation exo2: implement device master keygen exo2: more init through start of SetupSocSecurity exo2: implement pmc secure scratch management se: implement sticky bit validation libexosphere: fix building for arm32 libexo: fix makefile flags libexo: support building for arm64/arm sc7fw: skeleton binary sc7fw: skeleton a little more sc7fw: implement all non-dram functionality exo2: fix DivideUp error sc7fw: implement more dram code, fix reg library errors sc7fw: complete sc7fw impl. exo2: skeleton the rest of SetupSocSecurity exo2: implement fiq interrupt handler exo2: implement all exception handlers exo2: skeleton the entire smc api, implement the svc invoker exo2: implement rest of SetupSocSecurity exo2: correct slave security errors exo2: fix register definition exo2: minor fixes
2025-05-27 21:24:11 -04:00 · 2020-05-04 23:33:16 -07:00 · 2020-05-04 23:33:16 -07:00 · f66b41c027
commit f66b41c027
parent 71e0102f7a
192 changed files with 15093 additions and 24 deletions
--- a/libraries/libexosphere/source/wdt/wdt_api.cpp
+++ b/libraries/libexosphere/source/wdt/wdt_api.cpp
@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2018-2020 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 <exosphere.hpp>
+
+namespace ams::wdt {
+
+    namespace {
+
+        volatile uintptr_t g_register_address = secmon::MemoryRegionPhysicalDeviceTimer.GetAddress();
+
+        #if defined(ATMOSPHERE_ARCH_ARM64)
+            NOINLINE void Reboot(uintptr_t registers) {
+                __asm__ __volatile__(
+                    /* Get the current core. */
+                    "mrs  x12, mpidr_el1\n"
+                    "and  x12, x12, #0xFF\n"
+
+                    /* Get the offsets of the registers we want to write */
+                    "mov  x10, #0x8\n"
+                    "mov  x11, #0x20\n"
+                    "madd x10, x10, x12, %[registers]\n"
+                    "madd x11, x11, x12, %[registers]\n"
+                    "add  x10, x10, #0x60\n"
+                    "add  x11, x11, #0x100\n"
+
+                    /* Write the magic unlock pattern. */
+                    "mov  w9, #0xC45A\n"
+                    "str  w9, [x11, #0xC]\n"
+
+                    /* Disable the counters. */
+                    "mov  w9, #0x2\n"
+                    "str  w9, [x11, #0x8]\n"
+
+                    /* Start periodic timer. */
+                    "mov  w9, #0xC0000000\n"
+                    "str  w9, [x10]\n"
+
+                    /* Set reboot source to the timer we started. */
+                    "mov  w9, #0x8015\n"
+                    "add  w9, w9, w12\n"
+                    "str  w9, [x11]\n"
+
+                    /* Enable the counters. */
+                    "mov  w9, #0x1\n"
+                    "str  w9, [x11, #0x8]\n"
+
+                    /* Wait forever. */
+                    "1: b 1b"
+                    : [registers]"=&r"(registers)
+                    :
+                    : "x9", "x10", "x11", "x12", "memory"
+                );
+            }
+        #elif defined(ATMOSPHERE_ARCH_ARM)
+            NOINLINE void Reboot(uintptr_t registers) {
+                /* Write the magic unlock pattern. */
+                reg::Write(registers + 0x18C, 0xC45A);
+
+                /* Disable the counters. */
+                reg::Write(registers + 0x188, 0x2);
+
+                /* Start periodic timer. */
+                reg::Write(registers + 0x080, 0xC0000000);
+
+                /* Set reboot source to the timer we started. */
+                reg::Write(registers + 0x180, 0x8019);
+
+                /* Enable the counters. */
+                reg::Write(registers + 0x188, 0x1);
+
+                while (true) { /* ... */ }
+            }
+        #endif
+
+    }
+
+    void SetRegisterAddress(uintptr_t address) {
+        g_register_address = address;
+    }
+
+    NOINLINE void Reboot() {
+        const uintptr_t registers = g_register_address;
+        Reboot(registers);
+    }
+
+}