Restructured and rewritten entire codebase

arch/aarch64/bootstrap/boot.S

@@ -0,0 +1,36 @@
+/* Based on this tutorial:
+   https://github.com/s-matyukevich/raspberry-pi-os */
+
+.section ".text.boot", "a"
+
+.extern _bss_start
+.extern _bss_end
+
+.extern arm64Entry
+memzero:
+    str xzr, [x0], #8
+    subs x1, x1, #8
+    b.gt memzero
+    ret
+
+.global _start
+_start:
+    mrs x0, mpidr_el1
+    and x0, x0, #0xFF
+    cbz x0, _start2
+    b CPU_Loop
+
+_start2:
+    adr x0, _bss_start
+    adr x1, _bss_end
+    sub x1, x1, x0
+    bl memzero
+    mov sp, #0x200000
+    bl arm64Entry
+
+Halt:
+    wfe
+    b Halt
+
+CPU_Loop:
+    b CPU_Loop

arch/aarch64/cpu/smp.cpp

@@ -0,0 +1,59 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that 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 Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <smp.hpp>
+
+#include <ints.hpp>
+#include <memory.hpp>
+#include <cpu.hpp>
+
+#include "../../../kernel.h"
+
+volatile bool CPUEnabled = false;
+
+#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
+static __aligned(0x1000) CPUData CPUs[MAX_CPU] = {0};
+
+CPUData *GetCPU(uint64_t id) { return &CPUs[id]; }
+
+CPUData *GetCurrentCPU()
+{
+	uint64_t ret = 0;
+
+	if (!CPUs[ret].IsActive)
+	{
+		error("CPU %d is not active!", ret);
+		return &CPUs[0];
+	}
+
+	if (CPUs[ret].Checksum != CPU_DATA_CHECKSUM)
+	{
+		error("CPU %d data is corrupted!", ret);
+		return &CPUs[0];
+	}
+	return &CPUs[ret];
+}
+
+namespace SMP
+{
+	int CPUCores = 0;
+
+	void Initialize(void *madt)
+	{
+		fixme("SMP::Initialize() is not implemented!");
+	}
+}

arch/aarch64/entry.cpp

@@ -0,0 +1,27 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that 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 Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <types.h>
+
+#include <debug.h>
+#include <cpu.hpp>
+
+EXTERNC void arm64Entry(uint64_t dtb_ptr32, uint64_t x1, uint64_t x2, uint64_t x3)
+{
+    trace("Hello, World!");
+    CPU::Halt(true);
+}

arch/aarch64/linker.ld

@@ -0,0 +1,90 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that 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 Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+ENTRY(_start)
+
+SECTIONS
+{
+	_bootstrap_start = .;
+	.text.boot :
+	{
+		*(.text.boot)
+		. += CONSTANT(MAXPAGESIZE);
+		_bss_start = .;
+		*(.text.bss)
+		_bss_end = .;
+	}
+	_bootstrap_end = .;
+
+	_kernel_start = .;
+	_kernel_text_start = .;
+	.text :
+	{
+		KEEP(*(.text.boot))
+		*(.text .text.*)
+	}
+	. = ALIGN(4096);
+	_kernel_text_end = .;
+
+	_kernel_data_start = .;
+	.data :
+	{
+		*(.data .data.*)
+	}
+	. = ALIGN(4096);
+	_kernel_data_end = .;
+
+	_kernel_rodata_start = .;
+	.rodata :
+	{
+		*(.rodata .rodata.*)
+	}
+	. = ALIGN(4096);
+
+	.init_array :
+	{
+		PROVIDE_HIDDEN(__init_array_start = .);
+		KEEP(*(.init_array .ctors))
+		KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
+		PROVIDE_HIDDEN (__init_array_end = .);
+	}
+
+	.fini_array :
+	{
+		PROVIDE_HIDDEN(__fini_array_start = .);
+		KEEP(*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
+		KEEP(*(.fini_array .dtors))
+		PROVIDE_HIDDEN (__fini_array_end = .);
+	}
+	_kernel_rodata_end = .;
+
+	_kernel_bss_start = .;
+	.bss :
+	{
+		*(.bss .bss.*)
+	}
+	. = ALIGN(4096);
+	_kernel_bss_end = .;
+	_kernel_end = .;
+	_bss_size = _kernel_end - _kernel_rodata_end;
+
+	/DISCARD/ :
+	{
+		*(.comment*)
+		*(.note*)
+	}
+}

arch/aarch64/memory/vmm.cpp

@@ -0,0 +1,40 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that 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 Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <memory.hpp>
+
+#include <convert.h>
+#include <debug.h>
+
+namespace Memory
+{
+	bool Virtual::Check(void *VirtualAddress, PTFlag Flag, MapType Type)
+	{
+	}
+
+	void *Virtual::GetPhysical(void *VirtualAddress)
+	{
+	}
+
+	void Virtual::Map(void *VirtualAddress, void *PhysicalAddress, uint64_t Flags, MapType Type)
+	{
+	}
+
+	void Virtual::Unmap(void *VirtualAddress, MapType Type)
+	{
+	}
+}

arch/aarch64/syscalls.cpp

@@ -0,0 +1,31 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that 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 Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <syscalls.hpp>
+
+#include <cpu.hpp>
+
+extern "C" __naked __used __no_stack_protector void SystemCallHandlerStub()
+{
+
+}
+
+extern "C" uint64_t SystemCallsHandler(SyscallsFrame *regs);
+
+void InitializeSystemCalls()
+{
+}