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Revert "hoc-clk: add live vdd2, live boost clock and basic pwm dimming"

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This reverts commit 15b7df8ef1.
This commit is contained in:
souldbminersmwc
2025-11-09 16:14:52 -05:00
parent 22ec140738
commit 21a3f953d7
3804 changed files with 435 additions and 570162 deletions
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41
Source/Atmosphere-MTC-Unlock/exosphere/loader_stub/Makefile
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@@ -1,41 +0,0 @@
ATMOSPHERE_BUILD_CONFIGS :=
all: nx_release
THIS_MAKEFILE := $(abspath $(lastword $(MAKEFILE_LIST)))
CURRENT_DIRECTORY := $(abspath $(dir $(THIS_MAKEFILE)))
define ATMOSPHERE_ADD_TARGET
ATMOSPHERE_BUILD_CONFIGS += $(strip $1)
$(strip $1):
@echo "Building $(strip $1)"
@$$(MAKE) -f $(CURRENT_DIRECTORY)/loader_stub.mk ATMOSPHERE_MAKEFILE_TARGET="$(strip $1)" ATMOSPHERE_BUILD_NAME="$(strip $2)" ATMOSPHERE_BOARD="$(strip $3)" ATMOSPHERE_CPU="$(strip $4)" $(strip $5)
clean-$(strip $1):
@echo "Cleaning $(strip $1)"
@$$(MAKE) -f $(CURRENT_DIRECTORY)/loader_stub.mk clean ATMOSPHERE_MAKEFILE_TARGET="$(strip $1)" ATMOSPHERE_BUILD_NAME="$(strip $2)" ATMOSPHERE_BOARD="$(strip $3)" ATMOSPHERE_CPU="$(strip $4)" $(strip $5)
endef
define ATMOSPHERE_ADD_TARGETS
$(eval $(call ATMOSPHERE_ADD_TARGET, $(strip $1)_release, release, $(strip $2), $(strip $3), \
ATMOSPHERE_BUILD_SETTINGS="$(strip $4)" \
))
$(eval $(call ATMOSPHERE_ADD_TARGET, $(strip $1)_debug, debug, $(strip $2), $(strip $3), \
ATMOSPHERE_BUILD_SETTINGS="$(strip $4) -DAMS_BUILD_FOR_DEBUGGING" ATMOSPHERE_BUILD_FOR_DEBUGGING=1 \
))
$(eval $(call ATMOSPHERE_ADD_TARGET, $(strip $1)_audit, audit, $(strip $2), $(strip $3), \
ATMOSPHERE_BUILD_SETTINGS="$(strip $4) -DAMS_BUILD_FOR_AUDITING" ATMOSPHERE_BUILD_FOR_DEBUGGING=1 ATMOSPHERE_BUILD_FOR_AUDITING=1 \
))
endef
$(eval $(call ATMOSPHERE_ADD_TARGETS, nx, nx-hac-001, arm-cortex-a57,))
clean: $(foreach config,$(ATMOSPHERE_BUILD_CONFIGS),clean-$(config))
.PHONY: all clean $(foreach config,$(ATMOSPHERE_BUILD_CONFIGS), $(config) clean-$(config))

182
Source/Atmosphere-MTC-Unlock/exosphere/loader_stub/loader_stub.ld
View File

@@ -1,182 +0,0 @@
OUTPUT_ARCH(aarch64)
ENTRY(_start)
MEMORY
{
NULL : ORIGIN = 0, LENGTH = 4K
ldr_stub : ORIGIN = 0x040030000, LENGTH = 128K
}
SECTIONS
{
/* =========== CODE section =========== */
PROVIDE(__start__ = 0x040030000);
. = __start__;
__code_start = . ;
.crt0 :
{
KEEP (*(.crt0 .crt0.*))
. = ALIGN(8);
} >ldr_stub
.text :
{
*(.text.unlikely .text.*_unlikely .text.unlikely.*)
*(.text.exit .text.exit.*)
*(.text.startup .text.startup.*)
*(.text.hot .text.hot.*)
*(.text .stub .text.* .gnu.linkonce.t.*)
. = ALIGN(8);
} >ldr_stub
.init :
{
KEEP( *(.init) )
. = ALIGN(8);
} >ldr_stub
.plt :
{
*(.plt)
*(.iplt)
. = ALIGN(8);
} >ldr_stub
.fini :
{
KEEP( *(.fini) )
. = ALIGN(8);
} >ldr_stub
/* =========== RODATA section =========== */
. = ALIGN(8);
__rodata_start = . ;
.rodata :
{
*(.rodata .rodata.* .gnu.linkonce.r.*)
. = ALIGN(8);
} >ldr_stub
.eh_frame_hdr : { __eh_frame_hdr_start = .; *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) __eh_frame_hdr_end = .; } >ldr_stub
.eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) *(.eh_frame.*) } >ldr_stub
.gcc_except_table : ONLY_IF_RO { *(.gcc_except_table .gcc_except_table.*) } >ldr_stub
.gnu_extab : ONLY_IF_RO { *(.gnu_extab*) } >ldr_stub
.hash : { *(.hash) } >ldr_stub
/* =========== DATA section =========== */
. = ALIGN(8);
__data_start = . ;
.eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) *(.eh_frame.*) } >ldr_stub
.gcc_except_table : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) } >ldr_stub
.gnu_extab : ONLY_IF_RW { *(.gnu_extab*) } >ldr_stub
.exception_ranges : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) } >ldr_stub
.preinit_array ALIGN(8) :
{
PROVIDE (__preinit_array_start = .);
KEEP (*(.preinit_array))
PROVIDE (__preinit_array_end = .);
} >ldr_stub
.init_array ALIGN(8) :
{
PROVIDE (__init_array_start = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
PROVIDE (__init_array_end = .);
} >ldr_stub
.fini_array ALIGN(8) :
{
PROVIDE (__fini_array_start = .);
KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
PROVIDE (__fini_array_end = .);
} >ldr_stub
.ctors ALIGN(8) :
{
KEEP (*crtbegin.o(.ctors)) /* MUST be first -- GCC requires it */
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
} >ldr_stub
.dtors ALIGN(8) :
{
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
} >ldr_stub
__got_start__ = .;
.got : { *(.got) *(.igot) } >ldr_stub
.got.plt : { *(.got.plt) *(.igot.plt) } >ldr_stub
__got_end__ = .;
.data ALIGN(8) :
{
*(.data .data.* .gnu.linkonce.d.*)
SORT(CONSTRUCTORS)
} >ldr_stub
__bss_start__ = .;
.bss ALIGN(8) :
{
*(.dynbss)
*(.bss .bss.* .gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(16);
} >ldr_stub
__bss_end__ = .;
__end__ = ABSOLUTE(.) ;
/* ==================
==== Metadata ====
================== */
/* Discard sections that difficult post-processing */
/DISCARD/ : { *(.group .comment .note .interp) }
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to the beginning
of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
}

117
Source/Atmosphere-MTC-Unlock/exosphere/loader_stub/loader_stub.mk
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@@ -1,117 +0,0 @@
#---------------------------------------------------------------------------------
# pull in common atmosphere configuration
#---------------------------------------------------------------------------------
THIS_MAKEFILE := $(abspath $(lastword $(MAKEFILE_LIST)))
CURRENT_DIRECTORY := $(abspath $(dir $(THIS_MAKEFILE)))
include $(CURRENT_DIRECTORY)/../../libraries/config/templates/exosphere.mk
#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(__RECURSIVE__),1)
#---------------------------------------------------------------------------------
export ATMOSPHERE_TOPDIR := $(CURRENT_DIRECTORY)
export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) $(CURDIR)/include \
$(foreach dir,$(DATA),$(CURDIR)/$(dir))
CFILES := $(call FIND_SOURCE_FILES,$(SOURCES),c)
CPPFILES := $(call FIND_SOURCE_FILES,$(SOURCES),cpp)
SFILES := $(call FIND_SOURCE_FILES,$(SOURCES),s)
BINFILES :=
#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
export LD := $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
export LD := $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------
export OFILES_BIN := $(addsuffix .o,$(BINFILES))
export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
export OFILES := $(OFILES_BIN) $(OFILES_SRC)
export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(subst -,_,$(BINFILES))))
export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
-I.
export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/$(ATMOSPHERE_LIBRARY_DIR))
.PHONY: clean all check_lib check_exo_program
#---------------------------------------------------------------------------------
all: $(ATMOSPHERE_OUT_DIR) $(ATMOSPHERE_BUILD_DIR) $(ATMOSPHERE_LIBRARIES_DIR)/libexosphere/$(ATMOSPHERE_LIBRARY_DIR)/libexosphere.a $(CURRENT_DIRECTORY)/../program/$(ATMOSPHERE_OUT_DIR)/program.lz4
@$(MAKE) __RECURSIVE__=1 OUTPUT=$(CURRENT_DIRECTORY)/$(ATMOSPHERE_OUT_DIR)/$(notdir $(ATMOSPHERE_TOPDIR)) \
DEPSDIR=$(CURDIR)/$(ATMOSPHERE_BUILD_DIR) \
--no-print-directory -C $(ATMOSPHERE_BUILD_DIR) \
-f $(THIS_MAKEFILE)
$(ATMOSPHERE_LIBRARIES_DIR)/libexosphere/$(ATMOSPHERE_LIBRARY_DIR)/libexosphere.a: check_lib
@$(SILENTCMD)echo "Checked library."
$(CURRENT_DIRECTORY)/../program/$(ATMOSPHERE_OUT_DIR)/program.lz4: check_exo_program
@$(SILENTCMD)echo "Checked exosphere program."
ifeq ($(ATMOSPHERE_CHECKED_EXOSPHERE_PROGRAM),1)
check_exo_program:
else
check_exo_program: check_lib
@$(MAKE) --no-print-directory -C $(CURRENT_DIRECTORY)/../program -f $(CURRENT_DIRECTORY)/../program/program.mk ATMOSPHERE_CHECKED_LIBEXOSPHERE=1
endif
ifeq ($(ATMOSPHERE_CHECKED_LIBEXOSPHERE),1)
check_lib:
else
check_lib:
@$(MAKE) --no-print-directory -C $(ATMOSPHERE_LIBRARIES_DIR)/libexosphere -f $(ATMOSPHERE_LIBRARIES_DIR)/libexosphere/libexosphere.mk
endif
$(ATMOSPHERE_OUT_DIR) $(ATMOSPHERE_BUILD_DIR):
@[ -d $@ ] || mkdir -p $@
#---------------------------------------------------------------------------------
clean:
@echo clean ...
@rm -fr $(ATMOSPHERE_BUILD_DIR) $(ATMOSPHERE_OUT_DIR)
#---------------------------------------------------------------------------------
else
DEPENDS := $(OFILES:.o=.d)
#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
$(OUTPUT).bin : $(OUTPUT).elf
$(OBJCOPY) -S -O binary --set-section-flags .bss=alloc,load,contents $< $@
@echo built ... $(notdir $@)
$(OUTPUT).elf : $(OFILES)
$(OFILES) : $(ATMOSPHERE_LIBRARIES_DIR)/libexosphere/$(ATMOSPHERE_LIBRARY_DIR)/libexosphere.a
secmon_loader_main.o: CXXFLAGS += --embed-dir="$(CURRENT_DIRECTORY)/../program/$(ATMOSPHERE_OUT_DIR)/"
%.elf:
@echo linking $(notdir $@)
$(LD) $(LDFLAGS) $(OFILES) $(LIBPATHS) $(LIBS) -o $@
@$(NM) -CSn $@ > $(notdir $*.lst)
$(OFILES_SRC) : $(OFILES_BIN)
-include $(DEPENDS)
#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------

4
Source/Atmosphere-MTC-Unlock/exosphere/loader_stub/loader_stub.specs
View File

@@ -1,4 +0,0 @@
%rename link old_link
*link:
%(old_link) -T %:getenv(ATMOSPHERE_TOPDIR /loader_stub.ld) --gc-sections --nmagic

49
Source/Atmosphere-MTC-Unlock/exosphere/loader_stub/source/secmon_loader_error.cpp
View File

@@ -1,49 +0,0 @@
/*
* Copyright (c) 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>
#include "secmon_loader_error.hpp"
namespace ams::diag {
NORETURN void AbortImpl(const char *expr, const char *func, const char *file, int line) {
AMS_UNUSED(expr, func, line, file);
ams::secmon::loader::ErrorReboot();
}
NORETURN void AbortImpl(const char *expr, const char *func, const char *file, int line, const char *format, ...) {
AMS_UNUSED(expr, func, line, file, format);
ams::secmon::loader::ErrorReboot();
}
NORETURN void AbortImpl() {
ams::secmon::loader::ErrorReboot();
}
}
namespace ams::secmon::loader {
NORETURN void ErrorReboot() {
/* Invalidate the security engine. */
/* TODO */
/* Reboot. */
while (true) {
wdt::Reboot();
}
}
}

23
Source/Atmosphere-MTC-Unlock/exosphere/loader_stub/source/secmon_loader_error.hpp
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@@ -1,23 +0,0 @@
/*
* Copyright (c) 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>
#pragma once
namespace ams::secmon::loader {
NORETURN void ErrorReboot();
}

51
Source/Atmosphere-MTC-Unlock/exosphere/loader_stub/source/secmon_loader_main.cpp
View File

@@ -1,51 +0,0 @@
/*
* Copyright (c) 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>
#include "secmon_loader_uncompress.hpp"
namespace ams::secmon::loader {
namespace {
constexpr const u8 SecmonProgramLz4[] = {
#embed <program.lz4>
};
constexpr const u8 SecmonBootCodeLz4[] = {
#embed <boot_code.lz4>
};
}
NORETURN void UncompressAndExecute() {
/* Uncompress the program image. */
Uncompress(secmon::MemoryRegionPhysicalTzramFullProgramImage.GetPointer(), secmon::MemoryRegionPhysicalTzramFullProgramImage.GetSize(), SecmonProgramLz4, sizeof(SecmonProgramLz4));
/* Copy the boot image to the end of IRAM */
u8 *relocated_boot_code = secmon::MemoryRegionPhysicalIramBootCodeImage.GetEndPointer<u8>() - sizeof(SecmonBootCodeLz4);
std::memcpy(relocated_boot_code, SecmonBootCodeLz4, sizeof(SecmonBootCodeLz4));
/* Uncompress the boot image. */
Uncompress(secmon::MemoryRegionPhysicalIramBootCodeImage.GetPointer(), secmon::MemoryRegionPhysicalIramBootCodeImage.GetSize(), relocated_boot_code, sizeof(SecmonBootCodeLz4));
/* Jump to the boot image. */
reinterpret_cast<void (*)()>(secmon::MemoryRegionPhysicalIramBootCodeImage.GetAddress())();
/* We will never reach this point. */
__builtin_unreachable();
}
}

103
Source/Atmosphere-MTC-Unlock/exosphere/loader_stub/source/secmon_loader_uncompress.cpp
View File

@@ -1,103 +0,0 @@
/*
* Copyright (c) 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>
#include "secmon_loader_uncompress.hpp"
namespace ams::secmon::loader {
namespace {
class Lz4Uncompressor {
private:
const u8 *m_src;
size_t m_src_size;
size_t m_src_offset;
u8 *m_dst;
size_t m_dst_size;
size_t m_dst_offset;
public:
Lz4Uncompressor(void *dst, size_t dst_size, const void *src, size_t src_size) : m_src(static_cast<const u8 *>(src)), m_src_size(src_size), m_src_offset(0), m_dst(static_cast<u8 *>(dst)), m_dst_size(dst_size), m_dst_offset(0) {
/* ... */
}
void Uncompress() {
while (true) {
/* Read a control byte. */
const u8 control = this->ReadByte();
/* Copy what it specifies we should copy. */
this->Copy(this->GetCopySize(control >> 4));
/* If we've exceeded size, we're done. */
if (m_src_offset >= m_src_size) {
break;
}
/* Read the wide copy offset. */
u16 wide_offset = this->ReadByte();
AMS_ABORT_UNLESS(this->CanRead());
wide_offset |= (this->ReadByte() << 8);
/* Determine the copy size. */
const size_t wide_copy_size = this->GetCopySize(control & 0xF);
/* Copy bytes. */
const size_t end_offset = m_dst_offset + wide_copy_size + 4;
for (size_t cur_offset = m_dst_offset; cur_offset < end_offset; m_dst_offset = (++cur_offset)) {
AMS_ABORT_UNLESS(wide_offset <= cur_offset);
m_dst[cur_offset] = m_dst[cur_offset - wide_offset];
}
}
}
private:
u8 ReadByte() {
return m_src[m_src_offset++];
}
bool CanRead() const {
return m_src_offset < m_src_size;
}
size_t GetCopySize(u8 control) {
size_t size = control;
if (control >= 0xF) {
do {
AMS_ABORT_UNLESS(this->CanRead());
control = this->ReadByte();
size += control;
} while (control == 0xFF);
}
return size;
}
void Copy(size_t size) {
__builtin_memcpy(m_dst + m_dst_offset, m_src + m_src_offset, size);
m_dst_offset += size;
m_src_offset += size;
}
};
}
void Uncompress(void *dst, size_t dst_size, const void *src, size_t src_size) {
/* Create an execute a decompressor. */
Lz4Uncompressor(dst, dst_size, src, src_size).Uncompress();
}
}

23
Source/Atmosphere-MTC-Unlock/exosphere/loader_stub/source/secmon_loader_uncompress.hpp
View File

@@ -1,23 +0,0 @@
/*
* Copyright (c) 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 <vapours.hpp>
#pragma once
namespace ams::secmon::loader {
void Uncompress(void *dst, size_t dst_size, const void *src, size_t src_size);
}

102
Source/Atmosphere-MTC-Unlock/exosphere/loader_stub/source/start.s
View File

@@ -1,102 +0,0 @@
/*
* Copyright (c) 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/>.
*/
/* For some reason GAS doesn't know about it, even with .cpu cortex-a57 */
#define cpuactlr_el1 s3_1_c15_c2_0
#define cpuectlr_el1 s3_1_c15_c2_1
.macro RESET_CORE
mov x0, #(1 << 63)
msr cpuactlr_el1, x0 /* disable regional clock gating */
isb
mov x0, #3
msr rmr_el3, x0
isb
dsb sy
/* Nintendo forgot to copy-paste the branch instruction below. */
1:
wfi
b 1b
.endm
.macro ERRATUM_INVALIDATE_BTB_AT_BOOT
/* Nintendo copy-pasted https://github.com/ARM-software/arm-trusted-firmware/blob/master/plat/nvidia/tegra/common/aarch64/tegra_helpers.S#L312 */
/*
* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/* The following comments are mine. */
/*
Enable invalidates of branch target buffer, then flush
the entire instruction cache at the local level, and
with the reg change, the branch target buffer, then disable
invalidates of the branch target buffer again.
*/
mrs x0, cpuactlr_el1
orr x0, x0, #1
msr cpuactlr_el1, x0
dsb sy
isb
ic iallu
dsb sy
isb
mrs x0, cpuactlr_el1
bic x0, x0, #1
msr cpuactlr_el1, x0
.rept 7
nop /* wait long enough for the write to cpuactlr_el1 to have completed */
.endr
/* if the OS lock is set, disable it and request a warm reset */
mrs x0, oslsr_el1
ands x0, x0, #2
b.eq 2f
mov x0, xzr
msr oslar_el1, x0
RESET_CORE
.rept 65
nop /* guard against speculative excecution */
.endr
2:
/* set the OS lock */
mov x0, #1
msr oslar_el1, x0
.endm
.section .crt0.text.start, "ax", %progbits
.align 6
.global _start
_start:
/* mask all interrupts */
msr daifset, #0xF
/* Fixup hardware erratum */
ERRATUM_INVALIDATE_BTB_AT_BOOT
/* Set the stack pointer to a temporary location. */
ldr x20, =0x7C020000
mov sp, x20
/* Uncompress the program and iram boot code images. */
b _ZN3ams6secmon6loader20UncompressAndExecuteEv