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kern: finish implementing assembly init routines

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This commit is contained in:
Michael Scire 2020-01-24 00:47:43 -08:00
parent 0ef7d15c5e
commit b7e9fc1513
6 changed files with 108 additions and 4 deletions
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8
config/common.mk
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@ -76,14 +76,14 @@ TARGET := $(notdir $(CURDIR))
BUILD := build
DATA := data
INCLUDES := include
SOURCES ?= $(foreach d,$(filter-out source/arch source/board,$(wildcard source)),$(call DIR_WILDCARD,$d) $d)
SOURCES ?= source $(foreach d,$(filter-out source/arch source/board source,$(wildcard source)),$(call DIR_WILDCARD,$d) $d)
ifneq ($(strip $(wildcard source/$(ATMOSPHERE_ARCH_DIR)/.*)),)
SOURCES += $(call DIR_WILDCARD,source/$(ATMOSPHERE_ARCH_DIR))
SOURCES += source/$(ATMOSPHERE_ARCH_DIR) $(call DIR_WILDCARD,source/$(ATMOSPHERE_ARCH_DIR))
endif
ifneq ($(strip $(wildcard source/$(ATMOSPHERE_BOARD_DIR)/.*)),)
SOURCES += $(call DIR_WILDCARD,source/$(ATMOSPHERE_BOARD_DIR))
SOURCES += source/$(ATMOSPHERE_BOARD_DIR $(call DIR_WILDCARD,source/$(ATMOSPHERE_BOARD_DIR))
endif
ifneq ($(strip $(wildcard source/$(ATMOSPHERE_OS_DIR)/.*)),)
SOURCES += $(call DIR_WILDCARD,source/$(ATMOSPHERE_OS_DIR))
SOURCES += source/$(ATMOSPHERE_OS_DIR $(call DIR_WILDCARD,source/$(ATMOSPHERE_OS_DIR))
endif

1
libmesosphere/include/mesosphere.hpp
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@ -32,6 +32,7 @@
#include "mesosphere/init/kern_init_elf.hpp"
#include "mesosphere/init/kern_init_layout.hpp"
#include "mesosphere/init/kern_init_page_table_select.hpp"
#include "mesosphere/init/kern_init_arguments_select.hpp"
/* Core functionality. */
#include "mesosphere/kern_select_interrupts.hpp"

34
libmesosphere/include/mesosphere/arch/arm64/init/kern_k_init_arguments.hpp Normal file
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@ -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;
};
}

27
libmesosphere/include/mesosphere/arch/arm64/init/kern_k_init_page_table.hpp
View File

@ -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. */
};
}

13
libmesosphere/include/mesosphere/arch/arm64/kern_cpu.hpp
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@ -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");

29
libmesosphere/include/mesosphere/init/kern_init_arguments_select.hpp Normal file
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@ -0,0 +1,29 @@
/*
* 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
#include <mesosphere/kern_k_typed_address.hpp>
#ifdef ATMOSPHERE_ARCH_ARM64
#include "../arch/arm64/init/kern_k_init_arguments.hpp"
#else
#error "Unknown architecture for KInitArguments"
#endif
namespace ams::kern::init {
KPhysicalAddress GetInitArgumentsAddress(s32 core_id);
}