212 lines
4.4 KiB
C++
212 lines
4.4 KiB
C++
/*
|
|
* \brief Virtual Machine Monitor
|
|
* \author Stefan Kalkowski
|
|
* \date 2012-06-25
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2008-2012 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
/* Genode includes */
|
|
#include <base/elf.h>
|
|
#include <base/env.h>
|
|
#include <base/sleep.h>
|
|
#include <base/thread.h>
|
|
#include <cpu/cpu_state.h>
|
|
#include <io_mem_session/connection.h>
|
|
#include <rom_session/connection.h>
|
|
#include <vm_session/connection.h>
|
|
#include <dataspace/client.h>
|
|
#include <drivers/trustzone.h>
|
|
|
|
/* local includes */
|
|
#include <tsc_380.h>
|
|
#include <bp_147.h>
|
|
#include <sys_reg.h>
|
|
#include <sp810.h>
|
|
#include <vm.h>
|
|
|
|
using namespace Genode;
|
|
|
|
namespace Vmm {
|
|
class Vmm;
|
|
}
|
|
|
|
class Vmm::Vmm : public Thread<8192>
|
|
{
|
|
private:
|
|
|
|
enum Hypervisor_calls {
|
|
SP810_ENABLE = 1,
|
|
CPU_ID,
|
|
SYS_COUNTER,
|
|
MISC_FLAGS,
|
|
SYS_CTRL,
|
|
MCI_STATUS
|
|
};
|
|
|
|
Io_mem_connection _tsc_io_mem;
|
|
Io_mem_connection _tpc_io_mem;
|
|
Io_mem_connection _sys_io_mem;
|
|
Io_mem_connection _sp810_io_mem;
|
|
|
|
Tsc_380 _tsc;
|
|
Bp_147 _tpc;
|
|
Sys_reg _sys;
|
|
Sp810 _sp810;
|
|
|
|
Vm *_vm;
|
|
|
|
void _sys_ctrl()
|
|
{
|
|
enum {
|
|
OSC1 = 0xc0110001,
|
|
DVI_SRC = 0xc0710000,
|
|
DVI_MODE = 0xc0b00000
|
|
};
|
|
|
|
uint32_t ctrl = _vm->state()->r2;
|
|
uint32_t data = _vm->state()->r0;
|
|
|
|
switch(ctrl) {
|
|
case OSC1:
|
|
_sys.osc1(data);
|
|
break;
|
|
case DVI_SRC:
|
|
_sys.dvi_source(data);
|
|
break;
|
|
case DVI_MODE:
|
|
_sys.dvi_mode(data);
|
|
break;
|
|
default:
|
|
PWRN("Access violation to sys configuration ctrl=%ux", ctrl);
|
|
_vm->dump();
|
|
}
|
|
}
|
|
|
|
void _handle_hypervisor_call()
|
|
{
|
|
switch (_vm->state()->r1) {
|
|
case SP810_ENABLE:
|
|
_sp810.enable_timer0();
|
|
_sp810.enable_timer1();
|
|
break;
|
|
case CPU_ID:
|
|
_vm->state()->r0 = 0x0c000191; // Coretile A9 ID
|
|
break;
|
|
case SYS_COUNTER:
|
|
_vm->state()->r0 = _sys.counter();
|
|
break;
|
|
case MISC_FLAGS:
|
|
_vm->state()->r0 = _sys.misc_flags();
|
|
break;
|
|
case SYS_CTRL:
|
|
_sys_ctrl();
|
|
break;
|
|
case MCI_STATUS:
|
|
_vm->state()->r0 = _sys.mci_status();
|
|
break;
|
|
default:
|
|
PERR("Unknown hypervisor call!");
|
|
_vm->dump();
|
|
}
|
|
}
|
|
|
|
bool _handle_data_abort()
|
|
{
|
|
PWRN("Vm tried to access %p which isn't allowed",
|
|
_tsc.last_failed_access());
|
|
_vm->dump();
|
|
return false;
|
|
}
|
|
|
|
bool _handle_vm()
|
|
{
|
|
switch (_vm->state()->cpu_exception) {
|
|
case Cpu_state::DATA_ABORT:
|
|
if (!_handle_data_abort()) {
|
|
PERR("Could not handle data-abort will exit!");
|
|
return false;
|
|
}
|
|
break;
|
|
case Cpu_state::SUPERVISOR_CALL:
|
|
_handle_hypervisor_call();
|
|
break;
|
|
default:
|
|
PERR("Curious exception occured");
|
|
_vm->dump();
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
protected:
|
|
|
|
void entry()
|
|
{
|
|
Signal_receiver sig_rcv;
|
|
Signal_context sig_cxt;
|
|
Signal_context_capability sig_cap(sig_rcv.manage(&sig_cxt));
|
|
_vm->sig_handler(sig_cap);
|
|
_vm->start();
|
|
|
|
while (true) {
|
|
_vm->run();
|
|
Signal s = sig_rcv.wait_for_signal();
|
|
if (s.context() != &sig_cxt) {
|
|
PWRN("Invalid context");
|
|
continue;
|
|
}
|
|
if (!_handle_vm())
|
|
return;
|
|
}
|
|
};
|
|
|
|
public:
|
|
|
|
Vmm(addr_t tsc_base, addr_t tpc_base,
|
|
addr_t sys_base, addr_t sp810_base,
|
|
Vm *vm)
|
|
: Thread<8192>("vmm"),
|
|
_tsc_io_mem(tsc_base, 0x1000),
|
|
_tpc_io_mem(tpc_base, 0x1000),
|
|
_sys_io_mem(sys_base, 0x1000),
|
|
_sp810_io_mem(sp810_base, 0x1000),
|
|
_tsc((addr_t)env()->rm_session()->attach(_tsc_io_mem.dataspace())),
|
|
_tpc((addr_t)env()->rm_session()->attach(_tpc_io_mem.dataspace())),
|
|
_sys((addr_t)env()->rm_session()->attach(_sys_io_mem.dataspace())),
|
|
_sp810((addr_t)env()->rm_session()->attach(_sp810_io_mem.dataspace())),
|
|
_vm(vm) { }
|
|
};
|
|
|
|
|
|
int main()
|
|
{
|
|
enum {
|
|
SYS_VEA9X4_BASE = 0x10000000,
|
|
SP810_VEA9X4_BASE = 0x10001000,
|
|
TPC_VEA9X4_BASE = 0x100e6000,
|
|
TSC_VEA9X4_BASE = 0x100ec000,
|
|
MAIN_MEM_START = Trustzone::NONSECURE_RAM_BASE,
|
|
MAIN_MEM_SIZE = Trustzone::NONSECURE_RAM_SIZE,
|
|
KERNEL_OFFSET = 0x8000,
|
|
MACH_TYPE = 2272,
|
|
};
|
|
|
|
static const char* cmdline = "console=ttyAMA0,115200n8 root=/dev/ram0 lpj=1554432";
|
|
static Vm vm("linux", "initrd.gz", cmdline, MAIN_MEM_START, MAIN_MEM_SIZE,
|
|
KERNEL_OFFSET, MACH_TYPE);
|
|
static Vmm::Vmm vmm(TSC_VEA9X4_BASE, TPC_VEA9X4_BASE,
|
|
SYS_VEA9X4_BASE, SP810_VEA9X4_BASE, &vm);
|
|
|
|
PINF("Start virtual machine");
|
|
vmm.start();
|
|
|
|
sleep_forever();
|
|
return 0;
|
|
}
|