95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/*
|
|
* 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 "exec/address-spaces.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
|
|
|
|
/* Board init. */
|
|
|
|
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 *ram = g_new(MemoryRegion, 1);
|
|
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_allocate_system_memory(ram, NULL, "an5206.ram", ram_size);
|
|
memory_region_add_subregion(address_space_mem, 0, 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, cpu);
|
|
|
|
/* 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, 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");
|
|
}
|
|
|
|
DEFINE_MACHINE("an5206", an5206_machine_init)
|