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/*
* Arnewsh 5206 ColdFire system emulation.
*
* Copyright (c) 2007 CodeSourcery.
*
* This code is licensed under the GPL
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "cpu.h"
#include "hw/m68k/mcf.h"
#include "hw/boards.h"
#include "hw/loader.h"
#include "elf.h"
#include "qemu/error-report.h"
#include "sysemu/qtest.h"
#define KERNEL_LOAD_ADDR 0x10000
#define AN5206_MBAR_ADDR 0x10000000
#define AN5206_RAMBAR_ADDR 0x20000000
static void mcf5206_init(MemoryRegion *sysmem, uint32_t base)
{
DeviceState *dev;
SysBusDevice *s;
dev = qdev_new(TYPE_MCF5206_MBAR);
s = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(s, &error_fatal);
memory_region_add_subregion(sysmem, base, sysbus_mmio_get_region(s, 0));
}
static void an5206_init(MachineState *machine)
{
ram_addr_t ram_size = machine->ram_size;
const char *kernel_filename = machine->kernel_filename;
M68kCPU *cpu;
CPUM68KState *env;
int kernel_size;
uint64_t elf_entry;
hwaddr entry;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *sram = g_new(MemoryRegion, 1);
cpu = M68K_CPU(cpu_create(machine->cpu_type));
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_add_subregion(address_space_mem, 0, machine->ram);
/* Internal SRAM. */
memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal);
memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram);
mcf5206_init(address_space_mem, AN5206_MBAR_ADDR);
/* Load kernel. */
if (!kernel_filename) {
if (qtest_enabled()) {
return;
}
error_report("Kernel image must be specified");
exit(1);
}
kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry,
NULL, NULL, NULL, 1, EM_68K, 0, 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) {
error_report("Could not load kernel '%s'", kernel_filename);
exit(1);
}
env->pc = entry;
}
static void an5206_machine_init(MachineClass *mc)
{
mc->desc = "Arnewsh 5206";
mc->init = an5206_init;
mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5206");
mc->default_ram_id = "an5206.ram";
}
DEFINE_MACHINE("an5206", an5206_machine_init)
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