/*
* 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 .
*/
#include
#include "utils.h"
#include "arm.h"
#include "spinlock.h"
__attribute__((noinline)) bool overlaps(u64 as, u64 ae, u64 bs, u64 be)
{
if(as <= bs && bs < ae)
return true;
if(bs <= as && as < be)
return true;
return false;
}
// TODO: put that elsewhere
bool readEl1Memory(void *dst, uintptr_t addr, size_t size)
{
bool valid;
u64 flags = maskIrq();
uintptr_t pa = get_physical_address_el1_stage12(&valid, addr);
restoreInterruptFlags(flags);
if (!valid) {
return false;
}
flush_dcache_range((const void *)pa, (const void *)(pa + size));
memcpy(dst, (const void *)pa, size);
return true;
}
bool writeEl1Memory(uintptr_t addr, const void *src, size_t size)
{
bool valid;
u64 flags = maskIrq();
uintptr_t pa = get_physical_address_el1_stage12(&valid, addr);
restoreInterruptFlags(flags);
if (!valid) {
return false;
}
flush_dcache_range((const void *)pa, (const void *)(pa + size));
memcpy((void *)pa, src, size);
flush_dcache_range((const void *)pa, (const void *)(pa + size));
invalidate_icache_all();
__tlb_invalidate_el1_stage12();
__dsb_sy();
__isb();
return true;
}