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xqemu/hw/xbox/chihiro.c

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/*
* QEMU Chihiro emulation
*
* Copyright (c) 2013 espes
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 or
* (at your option) version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "hw/hw.h"
#include "hw/i386/pc.h"
#include "hw/boards.h"
#include "hw/ide.h"
#include "hw/loader.h"
#include "hw/isa/isa.h"
#include "exec/memory.h"
#include "qemu/config-file.h"
#include "sysemu/blockdev.h"
#include "block/blkmemory.h"
#include "hw/xbox/xbox.h"
#define SEGA_CHIP_REVISION 0xF0
# define SEGA_CHIP_REVISION_CHIP_ID 0xFF00
# define SEGA_CHIP_REVISION_FPGA_CHIP_ID 0x0000
# define SEGA_CHIP_REVISION_ASIC_CHIP_ID 0x0100
# define SEGA_CHIP_REVISION_REVISION_ID_MASK 0x00FF
#define SEGA_DIMM_SIZE 0xF4
# define SEGA_DIMM_SIZE_128M 0
# define SEGA_DIMM_SIZE_256M 1
# define SEGA_DIMM_SIZE_512M 2
# define SEGA_DIMM_SIZE_1024M 3
//#define DEBUG_CHIHIRO
typedef struct ChihiroLPCState {
ISADevice dev;
MemoryRegion ioport;
} ChihiroLPCState;
#define CHIHIRO_LPC_DEVICE(obj) \
OBJECT_CHECK(ChihiroLPCState, (obj), "chihiro-lpc")
static uint64_t chhiro_lpc_io_read(void *opaque, hwaddr addr,
unsigned size)
{
uint64_t r = 0;
switch (addr) {
case SEGA_CHIP_REVISION:
r = SEGA_CHIP_REVISION_ASIC_CHIP_ID;
break;
case SEGA_DIMM_SIZE:
r = SEGA_DIMM_SIZE_128M;
break;
}
#ifdef DEBUG_CHIHIRO
printf("chihiro lpc read [0x%llx] -> 0x%llx\n", addr, r);
#endif
return r;
}
static void chhiro_lpc_io_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
#ifdef DEBUG_CHIHIRO
printf("chihiro lpc write [0x%llx] = 0x%llx\n", addr, val);
#endif
}
static const MemoryRegionOps chihiro_lpc_io_ops = {
.read = chhiro_lpc_io_read,
.write = chhiro_lpc_io_write,
.impl = {
.min_access_size = 2,
.max_access_size = 2,
},
};
static void chihiro_lpc_realize(DeviceState *dev, Error **errp)
{
ChihiroLPCState *s = CHIHIRO_LPC_DEVICE(dev);
ISADevice *isa = ISA_DEVICE(dev);
memory_region_init_io(&s->ioport, OBJECT(dev), &chihiro_lpc_io_ops, s,
"chihiro-lpc-io", 0x100);
isa_register_ioport(isa, &s->ioport, 0x4000);
}
static void chihiro_lpc_class_initfn(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = chihiro_lpc_realize;
dc->desc = "Chihiro LPC";
}
static const TypeInfo chihiro_lpc_info = {
.name = "chihiro-lpc",
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(ChihiroLPCState),
.class_init = chihiro_lpc_class_initfn,
};
static void chihiro_register_types(void)
{
type_register_static(&chihiro_lpc_info);
}
type_init(chihiro_register_types)
/* The chihiro baseboard communicates with the xbox by acting as an IDE
* device. The device maps the boot rom from the mediaboard, a communication
* area for interfacing with the network board, and the ram on the baseboard.
* The baseboard ram is populated at boot from the gd-rom drive on the
* mediaboard containing something like a combined disc+hdd image.
*/
#define FILESYSTEM_START 0
#define ROM_START 0x8000000
#define ROM_SECTORS 0x2000
#define COMMUNICATION_START 0x9000000
#define COMMUNICATION_SECTORS 0x10000
#define SECTOR_SIZE 512
static void chihiro_ide_interface_init(const char *rom_file,
const char *filesystem_file)
{
if (drive_get(IF_IDE, 0, 1)) {
fprintf(stderr, "chihiro ide interface needs to be attached "
"to IDE device 1 but it's already in use.");
exit(1);
}
MemoryRegion *interface, *rom, *filesystem;
interface = g_malloc(sizeof(*interface));
memory_region_init(interface, NULL, "chihiro.interface",
(uint64_t)0x10000000 * SECTOR_SIZE);
rom = g_malloc(sizeof(*rom));
memory_region_init_ram(rom, NULL, "chihiro.interface.rom",
ROM_SECTORS * SECTOR_SIZE);
memory_region_add_subregion(interface,
(uint64_t)ROM_START * SECTOR_SIZE, rom);
/* limited by the size of the board ram, which we emulate as 128M for now */
filesystem = g_malloc(sizeof(*filesystem));
memory_region_init_ram(filesystem, NULL, "chihiro.interface.filesystem",
128 * 1024 * 1024);
memory_region_add_subregion(interface,
(uint64_t)FILESYSTEM_START * SECTOR_SIZE,
filesystem);
AddressSpace *interface_space;
interface_space = g_malloc(sizeof(*interface_space));
address_space_init(interface_space, interface, "chihiro-interface");
/* read files */
int rc, fd = -1;
if (!rom_file) rom_file = "fpr21042_m29w160et.bin";
char *rom_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom_file);
if (rom_filename) {
int rom_size = get_image_size(rom_filename);
assert(rom_size < memory_region_size(rom));
fd = open(rom_filename, O_RDONLY | O_BINARY);
assert(fd != -1);
rc = read(fd, memory_region_get_ram_ptr(rom), rom_size);
assert(rc == rom_size);
close(fd);
}
if (filesystem_file) {
assert(access(filesystem_file, R_OK) == 0);
int filesystem_size = get_image_size(filesystem_file);
assert(filesystem_size < memory_region_size(filesystem));
fd = open(filesystem_file, O_RDONLY | O_BINARY);
assert(fd != -1);
rc = read(fd, memory_region_get_ram_ptr(rom), filesystem_size);
assert(rc == filesystem_size);
close(fd);
}
/* create the device */
DriveInfo *dinfo;
dinfo = g_malloc0(sizeof(*dinfo));
dinfo->id = g_strdup("chihiro-interface");
dinfo->bdrv = bdrv_new(dinfo->id);
dinfo->type = IF_IDE;
dinfo->bus = 0;
dinfo->unit = 1;
dinfo->refcount = 1;
assert(!bdrv_memory_open(dinfo->bdrv, interface_space,
memory_region_size(interface)));
drive_append(dinfo);
}
static void chihiro_init(QEMUMachineInitArgs *args)
{
/* Placeholder blank eeprom for chihiro:
* Serial number 000000000000
* Mac address 00:00:00:00:00:00
* ...etc.
*/
const uint8_t eeprom[] = {
0xA7, 0x65, 0x60, 0x76, 0xB7, 0x2F, 0xFE, 0xD8,
0x20, 0xBC, 0x8B, 0x15, 0x13, 0xBF, 0x73, 0x9C,
0x8C, 0x3F, 0xD8, 0x07, 0x75, 0x55, 0x5F, 0x8B,
0x09, 0xD1, 0x25, 0xD1, 0x1A, 0xA2, 0xD5, 0xB7,
0x01, 0x7D, 0x9A, 0x31, 0xCD, 0x9C, 0x83, 0x6B,
0x2C, 0xAB, 0xAD, 0x6F, 0xAC, 0x36, 0xDE, 0xEF,
0x6F, 0x6E, 0x2F, 0x6F, 0x30, 0x30, 0x30, 0x30,
0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x01, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
QemuOpts *machine_opts = qemu_opts_find(qemu_find_opts("machine"), NULL);
if (machine_opts) {
const char *mediaboard_rom_file =
qemu_opt_get(machine_opts, "mediaboard_rom");
const char *mediaboard_filesystem_file =
qemu_opt_get(machine_opts, "mediaboard_filesystem");
if (mediaboard_rom_file || mediaboard_filesystem_file) {
chihiro_ide_interface_init(mediaboard_rom_file,
mediaboard_filesystem_file);
}
}
ISABus *isa_bus;
xbox_init_common(args, (uint8_t*)eeprom, &isa_bus);
isa_create_simple(isa_bus, "chihiro-lpc");
}
static QEMUMachine chihiro_machine = {
.name = "chihiro",
.desc = "Sega Chihiro",
.init = chihiro_init,
.max_cpus = 1,
.no_floppy = 1,
.no_cdrom = 1,
.no_sdcard = 1,
PC_DEFAULT_MACHINE_OPTIONS
};
static void chihiro_machine_init(void) {
qemu_register_machine(&chihiro_machine);
}
machine_init(chihiro_machine_init);
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