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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 "sysemu.h"
#include "boards.h"
#include "loader.h"
#include "elf.h"
#include "memory.h"
#include "exec-memory.h"
static void xtensa_sample_reset(void *env)
{
cpu_reset(env);
}
static void xtensa_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)
{
CPUState *env = NULL;
MemoryRegion *ram;
const size_t dram_size = 0x10000;
const size_t iram_size = 0x20000;
int n;
for (n = 0; n < smp_cpus; n++) {
env = cpu_init(cpu_model);
if (!env) {
fprintf(stderr, "Unable to find CPU definition\n");
exit(1);
}
qemu_register_reset(xtensa_sample_reset, env);
env->sregs[PRID] = n;
}
ram = g_malloc(sizeof(*ram));
memory_region_init_ram(ram, NULL, "xtensa.ram",
dram_size + iram_size + ram_size);
memory_region_add_subregion(get_system_memory(),
0x60000000 - dram_size - iram_size, ram);
if (kernel_filename) {
uint64_t elf_entry;
uint64_t elf_lowaddr;
#ifdef TARGET_WORDS_BIGENDIAN
int success = load_elf(kernel_filename, NULL, NULL, &elf_entry,
&elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
#else
int success = load_elf(kernel_filename, NULL, NULL, &elf_entry,
&elf_lowaddr, NULL, 0, ELF_MACHINE, 0);
#endif
if (success > 0) {
env->pc = elf_entry;
}
}
}
static void xtensa_sample_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 = "sample-xtensa-core";
}
xtensa_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
initrd_filename, cpu_model);
}
static QEMUMachine xtensa_sample_machine = {
.name = "sample-xtensa-machine",
.desc = "Sample Xtensa machine (sample Xtensa core)",
.init = xtensa_sample_init,
.max_cpus = 4,
};
static void xtensa_sample_machine_init(void)
{
qemu_register_machine(&xtensa_sample_machine);
}
machine_init(xtensa_sample_machine_init);
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