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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 b3bfd6c4c9
commit 32fb22e361
11 changed files with 270 additions and 40 deletions
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34
libraries/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
libraries/libmesosphere/include/mesosphere/arch/arm64/init/kern_k_init_page_table.hpp
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@ -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. */
};
}