53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
|
|
* QEMU MIPS address translation support
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/hw.h"
|
|
#include "hw/mips/cpudevs.h"
|
|
|
|
static int mips_um_ksegs;
|
|
|
|
uint64_t cpu_mips_kseg0_to_phys(void *opaque, uint64_t addr)
|
|
{
|
|
return addr & 0x1fffffffll;
|
|
}
|
|
|
|
uint64_t cpu_mips_phys_to_kseg0(void *opaque, uint64_t addr)
|
|
{
|
|
return addr | ~0x7fffffffll;
|
|
}
|
|
|
|
uint64_t cpu_mips_kvm_um_phys_to_kseg0(void *opaque, uint64_t addr)
|
|
{
|
|
return addr | 0x40000000ll;
|
|
}
|
|
|
|
bool mips_um_ksegs_enabled(void)
|
|
{
|
|
return mips_um_ksegs;
|
|
}
|
|
|
|
void mips_um_ksegs_enable(void)
|
|
{
|
|
mips_um_ksegs = 1;
|
|
}
|