mirror of
https://github.com/Atmosphere-NX/Atmosphere
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82 lines
3 KiB
C++
82 lines
3 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <exosphere.hpp>
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#include "fusee_key_derivation.hpp"
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#include "fusee_secondary_archive.hpp"
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#include "fusee_setup_horizon.hpp"
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#include "fusee_fatal.hpp"
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namespace ams::nxboot {
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namespace {
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constexpr inline const uintptr_t CLKRST = secmon::MemoryRegionPhysicalDeviceClkRst.GetAddress();
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constexpr inline const uintptr_t MC = secmon::MemoryRegionPhysicalDeviceMemoryController.GetAddress();
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void DisableArc() {
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/* Enable ARC_CLK_OVR_ON. */
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reg::ReadWrite(CLKRST + CLK_RST_CONTROLLER_LVL2_CLK_GATE_OVRD, CLK_RST_REG_BITS_ENUM(LVL2_CLK_GATE_OVRD_ARC_CLK_OVR_ON, OFF));
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/* Enable the ARC. */
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reg::ReadWrite(MC + MC_IRAM_REG_CTRL, MC_REG_BITS_ENUM(IRAM_REG_CTRL_IRAM_CFG_WRITE_ACCESS, DISABLED));
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/* Set IRAM BOM/TOP to open up access to all mmio. */
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reg::Write(MC + MC_IRAM_BOM, 0xFFFFF000);
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reg::Write(MC + MC_IRAM_TOM, 0x00000000);
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/* Read to ensure our configuration takes. */
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reg::Read(MC + MC_IRAM_REG_CTRL);
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}
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void DeriveAllKeys(const fuse::SocType soc_type) {
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/* If on erista, run the TSEC keygen firmware. */
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if (soc_type == fuse::SocType_Erista) {
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clkrst::SetBpmpClockRate(clkrst::BpmpClockRate_408MHz);
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if (!tsec::RunTsecFirmware(GetSecondaryArchive().tsec_keygen, sizeof(GetSecondaryArchive().tsec_keygen))) {
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ShowFatalError("Failed to run tsec_keygen firmware!\n");
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}
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clkrst::SetBpmpClockRate(clkrst::BpmpClockRate_576MHz);
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}
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/* Derive master/device keys. */
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if (soc_type == fuse::SocType_Erista) {
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DeriveKeysErista();
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} else /* if (soc_type == fuse::SocType_Mariko) */ {
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DeriveKeysMariko();
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}
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}
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}
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void SetupAndStartHorizon() {
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/* Get soc/hardware type. */
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const auto soc_type = fuse::GetSocType();
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const auto hw_type = fuse::GetHardwareType();
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/* Derive all keys. */
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DeriveAllKeys(soc_type);
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/* Disable the ARC redirect. */
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/* NOTE: Devices can no longer access IRAM from this point onwards. */
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DisableArc();
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AMS_UNUSED(hw_type);
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ShowFatalError("SetupAndStartHorizon not fully implemented\n");
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}
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} |