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/*
* Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Open Source and Linux Lab nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "cpu.h"
#include "sysemu/reset.h"
#include "sysemu/sysemu.h"
#include "hw/boards.h"
#include "hw/loader.h"
#include "elf.h"
#include "exec/memory.h"
#include "exec/address-spaces.h"
#include "qemu/error-report.h"
#include "xtensa_memory.h"
#include "xtensa_sim.h"
static uint64_t translate_phys_addr(void *opaque, uint64_t addr)
{
XtensaCPU *cpu = opaque;
return cpu_get_phys_page_debug(CPU(cpu), addr);
}
static void sim_reset(void *opaque)
{
XtensaCPU *cpu = opaque;
cpu_reset(CPU(cpu));
}
XtensaCPU *xtensa_sim_common_init(MachineState *machine)
{
XtensaCPU *cpu = NULL;
CPUXtensaState *env = NULL;
ram_addr_t ram_size = machine->ram_size;
int n;
for (n = 0; n < machine->smp.cpus; n++) {
cpu = XTENSA_CPU(cpu_create(machine->cpu_type));
env = &cpu->env;
env->sregs[PRID] = n;
qemu_register_reset(sim_reset, cpu);
/* Need MMU initialized prior to ELF loading,
* so that ELF gets loaded into virtual addresses
*/
sim_reset(cpu);
}
if (env) {
XtensaMemory sysram = env->config->sysram;
sysram.location[0].size = ram_size;
xtensa_create_memory_regions(&env->config->instrom, "xtensa.instrom",
get_system_memory());
xtensa_create_memory_regions(&env->config->instram, "xtensa.instram",
get_system_memory());
xtensa_create_memory_regions(&env->config->datarom, "xtensa.datarom",
get_system_memory());
xtensa_create_memory_regions(&env->config->dataram, "xtensa.dataram",
get_system_memory());
xtensa_create_memory_regions(&env->config->sysrom, "xtensa.sysrom",
get_system_memory());
xtensa_create_memory_regions(&sysram, "xtensa.sysram",
get_system_memory());
}
if (serial_hd(0)) {
xtensa_sim_open_console(serial_hd(0));
}
return cpu;
}
void xtensa_sim_load_kernel(XtensaCPU *cpu, MachineState *machine)
{
const char *kernel_filename = machine->kernel_filename;
#ifdef TARGET_WORDS_BIGENDIAN
int big_endian = true;
#else
int big_endian = false;
#endif
if (kernel_filename) {
uint64_t elf_entry;
uint64_t elf_lowaddr;
int success = load_elf(kernel_filename, NULL, translate_phys_addr, cpu,
&elf_entry, &elf_lowaddr, NULL, big_endian,
EM_XTENSA, 0, 0);
if (success > 0) {
cpu->env.pc = elf_entry;
}
}
}
static void xtensa_sim_init(MachineState *machine)
{
XtensaCPU *cpu = xtensa_sim_common_init(machine);
xtensa_sim_load_kernel(cpu, machine);
}
static void xtensa_sim_machine_init(MachineClass *mc)
{
mc->desc = "sim machine (" XTENSA_DEFAULT_CPU_MODEL ")";
mc->is_default = true;
mc->init = xtensa_sim_init;
mc->max_cpus = 4;
mc->no_serial = 1;
mc->default_cpu_type = XTENSA_DEFAULT_CPU_TYPE;
}
DEFINE_MACHINE("sim", xtensa_sim_machine_init)
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