124 lines
4.2 KiB
C
124 lines
4.2 KiB
C
/*
|
|
* 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 "sysemu.h"
|
|
#include "boards.h"
|
|
#include "loader.h"
|
|
#include "elf.h"
|
|
#include "memory.h"
|
|
#include "exec-memory.h"
|
|
|
|
static uint64_t translate_phys_addr(void *env, uint64_t addr)
|
|
{
|
|
return cpu_get_phys_page_debug(env, addr);
|
|
}
|
|
|
|
static void sim_reset(void *opaque)
|
|
{
|
|
XtensaCPU *cpu = opaque;
|
|
|
|
cpu_reset(CPU(cpu));
|
|
}
|
|
|
|
static void sim_init(ram_addr_t ram_size,
|
|
const char *boot_device,
|
|
const char *kernel_filename, const char *kernel_cmdline,
|
|
const char *initrd_filename, const char *cpu_model)
|
|
{
|
|
XtensaCPU *cpu = NULL;
|
|
CPUXtensaState *env = NULL;
|
|
MemoryRegion *ram, *rom;
|
|
int n;
|
|
|
|
for (n = 0; n < smp_cpus; n++) {
|
|
cpu = cpu_xtensa_init(cpu_model);
|
|
if (cpu == NULL) {
|
|
fprintf(stderr, "Unable to find CPU definition\n");
|
|
exit(1);
|
|
}
|
|
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);
|
|
}
|
|
|
|
ram = g_malloc(sizeof(*ram));
|
|
memory_region_init_ram(ram, "xtensa.sram", ram_size);
|
|
vmstate_register_ram_global(ram);
|
|
memory_region_add_subregion(get_system_memory(), 0, ram);
|
|
|
|
rom = g_malloc(sizeof(*rom));
|
|
memory_region_init_ram(rom, "xtensa.rom", 0x1000);
|
|
vmstate_register_ram_global(rom);
|
|
memory_region_add_subregion(get_system_memory(), 0xfe000000, rom);
|
|
|
|
if (kernel_filename) {
|
|
uint64_t elf_entry;
|
|
uint64_t elf_lowaddr;
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
int success = load_elf(kernel_filename, translate_phys_addr, env,
|
|
&elf_entry, &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
|
|
#else
|
|
int success = load_elf(kernel_filename, translate_phys_addr, env,
|
|
&elf_entry, &elf_lowaddr, NULL, 0, ELF_MACHINE, 0);
|
|
#endif
|
|
if (success > 0) {
|
|
env->pc = elf_entry;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void xtensa_sim_init(ram_addr_t ram_size,
|
|
const char *boot_device,
|
|
const char *kernel_filename, const char *kernel_cmdline,
|
|
const char *initrd_filename, const char *cpu_model)
|
|
{
|
|
if (!cpu_model) {
|
|
cpu_model = "dc232b";
|
|
}
|
|
sim_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
|
|
initrd_filename, cpu_model);
|
|
}
|
|
|
|
static QEMUMachine xtensa_sim_machine = {
|
|
.name = "sim",
|
|
.desc = "sim machine (dc232b)",
|
|
.init = xtensa_sim_init,
|
|
.max_cpus = 4,
|
|
};
|
|
|
|
static void xtensa_sim_machine_init(void)
|
|
{
|
|
qemu_register_machine(&xtensa_sim_machine);
|
|
}
|
|
|
|
machine_init(xtensa_sim_machine_init);
|