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/*
* Arnewsh 5206 ColdFire system emulation.
*
* Copyright (c) 2007 CodeSourcery.
*
* This code is licensed under the GPL
*/
#include "hw/hw.h"
#include "hw/m68k/mcf.h"
#include "hw/boards.h"
#include "hw/loader.h"
#include "elf.h"
#include "exec/address-spaces.h"
#define KERNEL_LOAD_ADDR 0x10000
#define AN5206_MBAR_ADDR 0x10000000
#define AN5206_RAMBAR_ADDR 0x20000000
/* Board init. */
static void an5206_init(QEMUMachineInitArgs *args)
{
ram_addr_t ram_size = args->ram_size;
const char *cpu_model = args->cpu_model;
const char *kernel_filename = args->kernel_filename;
M68kCPU *cpu;
CPUM68KState *env;
int kernel_size;
uint64_t elf_entry;
hwaddr entry;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
MemoryRegion *sram = g_new(MemoryRegion, 1);
if (!cpu_model) {
cpu_model = "m5206";
}
cpu = cpu_m68k_init(cpu_model);
if (!cpu) {
hw_error("Unable to find m68k CPU definition\n");
}
env = &cpu->env;
/* Initialize CPU registers. */
env->vbr = 0;
/* TODO: allow changing MBAR and RAMBAR. */
env->mbar = AN5206_MBAR_ADDR | 1;
env->rambar0 = AN5206_RAMBAR_ADDR | 1;
/* DRAM at address zero */
memory_region_init_ram(ram, "an5206.ram", ram_size);
vmstate_register_ram_global(ram);
memory_region_add_subregion(address_space_mem, 0, ram);
/* Internal SRAM. */
memory_region_init_ram(sram, "an5206.sram", 512);
vmstate_register_ram_global(sram);
memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram);
mcf5206_init(address_space_mem, AN5206_MBAR_ADDR, cpu);
/* Load kernel. */
if (!kernel_filename) {
fprintf(stderr, "Kernel image must be specified\n");
exit(1);
}
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);
}
env->pc = entry;
}
static QEMUMachine an5206_machine = {
.name = "an5206",
.desc = "Arnewsh 5206",
.init = an5206_init,
DEFAULT_MACHINE_OPTIONS,
};
static void an5206_machine_init(void)
{
qemu_register_machine(&an5206_machine);
}
machine_init(an5206_machine_init);
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