82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/*
|
|
* 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;
|
|
M68kCPU *cpu;
|
|
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";
|
|
cpu = cpu_m68k_init(cpu_model);
|
|
if (!cpu) {
|
|
fprintf(stderr, "Unable to find m68k CPU definition\n");
|
|
exit(1);
|
|
}
|
|
env = &cpu->env;
|
|
|
|
/* Initialize CPU registers. */
|
|
env->vbr = 0;
|
|
|
|
/* RAM at address zero */
|
|
memory_region_allocate_system_memory(ram, NULL, "dummy_m68k.ram",
|
|
ram_size);
|
|
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, EM_68K, 0);
|
|
entry = elf_entry;
|
|
if (kernel_size < 0) {
|
|
kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL,
|
|
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 void dummy_m68k_machine_init(MachineClass *mc)
|
|
{
|
|
mc->desc = "Dummy board";
|
|
mc->init = dummy_m68k_init;
|
|
}
|
|
|
|
DEFINE_MACHINE("dummy", dummy_m68k_machine_init)
|