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/*
* Dummy board with just RAM and CPU for use as an ISS.
*
* Copyright (c) 2007 CodeSourcery.
*
* This code is licensed under the GPL
*/
#include "hw/hw.h"
#include "hw/boards.h"
#include "hw/loader.h"
#include "elf.h"
#include "exec/address-spaces.h"
#define KERNEL_LOAD_ADDR 0x10000
/* Board init. */
static void dummy_m68k_init(MachineState *machine)
{
ram_addr_t ram_size = machine->ram_size;
const char *cpu_model = machine->cpu_model;
const char *kernel_filename = machine->kernel_filename;
CPUM68KState *env;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
int kernel_size;
uint64_t elf_entry;
hwaddr entry;
if (!cpu_model)
cpu_model = "cfv4e";
env = cpu_init(cpu_model);
if (!env) {
fprintf(stderr, "Unable to find m68k CPU definition\n");
exit(1);
}
/* Initialize CPU registers. */
env->vbr = 0;
/* RAM at address zero */
memory_region_init_ram(ram, NULL, "dummy_m68k.ram", ram_size);
vmstate_register_ram_global(ram);
memory_region_add_subregion(address_space_mem, 0, ram);
/* Load kernel. */
if (kernel_filename) {
kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
NULL, NULL, 1, ELF_MACHINE, 0);
entry = elf_entry;
if (kernel_size < 0) {
kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
}
if (kernel_size < 0) {
kernel_size = load_image_targphys(kernel_filename,
KERNEL_LOAD_ADDR,
ram_size - KERNEL_LOAD_ADDR);
entry = KERNEL_LOAD_ADDR;
}
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
}
} else {
entry = 0;
}
env->pc = entry;
}
static QEMUMachine dummy_m68k_machine = {
.name = "dummy",
.desc = "Dummy board",
.init = dummy_m68k_init,
};
static void dummy_m68k_machine_init(void)
{
qemu_register_machine(&dummy_m68k_machine);
}
machine_init(dummy_m68k_machine_init);
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