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qemu-e2k/hw/mips/jazz.c

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/*
* QEMU MIPS Jazz support
*
* Copyright (c) 2007-2008 Hervé Poussineau
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu/datadir.h"
#include "hw/clock.h"
#include "hw/mips/mips.h"
#include "hw/mips/cpudevs.h"
#include "hw/intc/i8259.h"
#include "hw/dma/i8257.h"
#include "hw/char/serial.h"
#include "hw/char/parallel.h"
#include "hw/isa/isa.h"
#include "hw/block/fdc.h"
#include "sysemu/sysemu.h"
#include "hw/boards.h"
#include "net/net.h"
#include "hw/scsi/esp.h"
#include "hw/mips/bios.h"
#include "hw/loader.h"
#include "hw/rtc/mc146818rtc.h"
#include "hw/timer/i8254.h"
#include "hw/display/vga.h"
#include "hw/display/bochs-vbe.h"
#include "hw/audio/pcspk.h"
#include "hw/input/i8042.h"
#include "hw/sysbus.h"
#include "sysemu/qtest.h"
#include "sysemu/reset.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "qemu/help_option.h"
#ifdef CONFIG_TCG
#include "hw/core/tcg-cpu-ops.h"
#endif /* CONFIG_TCG */
enum jazz_model_e {
JAZZ_MAGNUM,
JAZZ_PICA61,
};
static void main_cpu_reset(void *opaque)
{
MIPSCPU *cpu = opaque;
cpu_reset(CPU(cpu));
}
static uint64_t rtc_read(void *opaque, hwaddr addr, unsigned size)
{
uint8_t val;
address_space_read(&address_space_memory, 0x90000071,
MEMTXATTRS_UNSPECIFIED, &val, 1);
return val;
}
static void rtc_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
uint8_t buf = val & 0xff;
address_space_write(&address_space_memory, 0x90000071,
MEMTXATTRS_UNSPECIFIED, &buf, 1);
}
static const MemoryRegionOps rtc_ops = {
.read = rtc_read,
.write = rtc_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static uint64_t dma_dummy_read(void *opaque, hwaddr addr,
unsigned size)
{
/*
* Nothing to do. That is only to ensure that
* the current DMA acknowledge cycle is completed.
*/
return 0xff;
}
static void dma_dummy_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
/*
* Nothing to do. That is only to ensure that
* the current DMA acknowledge cycle is completed.
*/
}
static const MemoryRegionOps dma_dummy_ops = {
.read = dma_dummy_read,
.write = dma_dummy_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
#define MAGNUM_BIOS_SIZE_MAX 0x7e000
#define MAGNUM_BIOS_SIZE \
(BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
#define SONIC_PROM_SIZE 0x1000
static void mips_jazz_init(MachineState *machine,
enum jazz_model_e jazz_model)
{
MemoryRegion *address_space = get_system_memory();
char *filename;
int bios_size, n, big_endian;
Clock *cpuclk;
MIPSCPU *cpu;
MIPSCPUClass *mcc;
CPUMIPSState *env;
qemu_irq *i8259;
rc4030_dma *dmas;
IOMMUMemoryRegion *rc4030_dma_mr;
MemoryRegion *isa_mem = g_new(MemoryRegion, 1);
MemoryRegion *isa_io = g_new(MemoryRegion, 1);
MemoryRegion *rtc = g_new(MemoryRegion, 1);
MemoryRegion *i8042 = g_new(MemoryRegion, 1);
MemoryRegion *dma_dummy = g_new(MemoryRegion, 1);
MemoryRegion *dp8393x_prom = g_new(MemoryRegion, 1);
NICInfo *nd;
DeviceState *dev, *rc4030;
SysBusDevice *sysbus;
ISABus *isa_bus;
ISADevice *pit;
DriveInfo *fds[MAX_FD];
MemoryRegion *bios = g_new(MemoryRegion, 1);
MemoryRegion *bios2 = g_new(MemoryRegion, 1);
SysBusESPState *sysbus_esp;
ESPState *esp;
static const struct {
unsigned freq_hz;
unsigned pll_mult;
} ext_clk[] = {
[JAZZ_MAGNUM] = {50000000, 2},
[JAZZ_PICA61] = {33333333, 4},
};
#if TARGET_BIG_ENDIAN
big_endian = 1;
#else
big_endian = 0;
#endif
if (machine->ram_size > 256 * MiB) {
error_report("RAM size more than 256Mb is not supported");
exit(EXIT_FAILURE);
}
cpuclk = clock_new(OBJECT(machine), "cpu-refclk");
clock_set_hz(cpuclk, ext_clk[jazz_model].freq_hz
* ext_clk[jazz_model].pll_mult);
/* init CPUs */
cpu = mips_cpu_create_with_clock(machine->cpu_type, cpuclk);
env = &cpu->env;
qemu_register_reset(main_cpu_reset, cpu);
/*
* Chipset returns 0 in invalid reads and do not raise data exceptions.
* However, we can't simply add a global memory region to catch
* everything, as this would make all accesses including instruction
* accesses be ignored and not raise exceptions.
*
* NOTE: this behaviour of raising exceptions for bad instruction
* fetches but not bad data accesses was added in commit 54e755588cf1e9
* to restore behaviour broken by c658b94f6e8c206, but it is not clear
* whether the real hardware behaves this way. It is possible that
* real hardware ignores bad instruction fetches as well -- if so then
* we could replace this hijacking of CPU methods with a simple global
* memory region that catches all memory accesses, as we do on Malta.
*/
mcc = MIPS_CPU_GET_CLASS(cpu);
mcc->no_data_aborts = true;
/* allocate RAM */
memory_region_add_subregion(address_space, 0, machine->ram);
memory_region_init_rom(bios, NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE,
&error_fatal);
memory_region_init_alias(bios2, NULL, "mips_jazz.bios", bios,
0, MAGNUM_BIOS_SIZE);
memory_region_add_subregion(address_space, 0x1fc00000LL, bios);
memory_region_add_subregion(address_space, 0xfff00000LL, bios2);
/* load the BIOS image. */
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, machine->firmware ?: BIOS_FILENAME);
if (filename) {
bios_size = load_image_targphys(filename, 0xfff00000LL,
MAGNUM_BIOS_SIZE);
g_free(filename);
} else {
bios_size = -1;
}
if ((bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE)
&& machine->firmware && !qtest_enabled()) {
error_report("Could not load MIPS bios '%s'", machine->firmware);
exit(1);
}
/* Init CPU internal devices */
cpu_mips_irq_init_cpu(cpu);
cpu_mips_clock_init(cpu);
/* Chipset */
rc4030 = rc4030_init(&dmas, &rc4030_dma_mr);
sysbus = SYS_BUS_DEVICE(rc4030);
sysbus_connect_irq(sysbus, 0, env->irq[6]);
sysbus_connect_irq(sysbus, 1, env->irq[3]);
memory_region_add_subregion(address_space, 0x80000000,
sysbus_mmio_get_region(sysbus, 0));
memory_region_add_subregion(address_space, 0xf0000000,
sysbus_mmio_get_region(sysbus, 1));
memory_region_init_io(dma_dummy, NULL, &dma_dummy_ops,
NULL, "dummy_dma", 0x1000);
memory_region_add_subregion(address_space, 0x8000d000, dma_dummy);
memory_region_init_rom(dp8393x_prom, NULL, "dp8393x-jazz.prom",
SONIC_PROM_SIZE, &error_fatal);
memory_region_add_subregion(address_space, 0x8000b000, dp8393x_prom);
/* ISA bus: IO space at 0x90000000, mem space at 0x91000000 */
memory_region_init(isa_io, NULL, "isa-io", 0x00010000);
memory_region_init(isa_mem, NULL, "isa-mem", 0x01000000);
memory_region_add_subregion(address_space, 0x90000000, isa_io);
memory_region_add_subregion(address_space, 0x91000000, isa_mem);
isa_bus = isa_bus_new(NULL, isa_mem, isa_io, &error_abort);
/* ISA devices */
i8259 = i8259_init(isa_bus, env->irq[4]);
isa_bus_irqs(isa_bus, i8259);
i8257_dma_init(isa_bus, 0);
pit = i8254_pit_init(isa_bus, 0x40, 0, NULL);
pcspk_init(isa_new(TYPE_PC_SPEAKER), isa_bus, pit);
/* Video card */
switch (jazz_model) {
case JAZZ_MAGNUM:
dev = qdev_new("sysbus-g364");
sysbus = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(sysbus, &error_fatal);
sysbus_mmio_map(sysbus, 0, 0x60080000);
sysbus_mmio_map(sysbus, 1, 0x40000000);
sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 3));
{
/* Simple ROM, so user doesn't have to provide one */
MemoryRegion *rom_mr = g_new(MemoryRegion, 1);
memory_region_init_rom(rom_mr, NULL, "g364fb.rom", 0x80000,
&error_fatal);
uint8_t *rom = memory_region_get_ram_ptr(rom_mr);
memory_region_add_subregion(address_space, 0x60000000, rom_mr);
rom[0] = 0x10; /* Mips G364 */
}
break;
case JAZZ_PICA61:
dev = qdev_new(TYPE_VGA_MMIO);
qdev_prop_set_uint8(dev, "it_shift", 0);
sysbus = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(sysbus, &error_fatal);
sysbus_mmio_map(sysbus, 0, 0x60000000);
sysbus_mmio_map(sysbus, 1, 0x400a0000);
sysbus_mmio_map(sysbus, 2, VBE_DISPI_LFB_PHYSICAL_ADDRESS);
break;
default:
break;
}
/* Network controller */
for (n = 0; n < nb_nics; n++) {
nd = &nd_table[n];
if (!nd->model) {
nd->model = g_strdup("dp83932");
}
if (strcmp(nd->model, "dp83932") == 0) {
int checksum, i;
uint8_t *prom;
qemu_check_nic_model(nd, "dp83932");
dev = qdev_new("dp8393x");
qdev_set_nic_properties(dev, nd);
qdev_prop_set_uint8(dev, "it_shift", 2);
qdev_prop_set_bit(dev, "big_endian", big_endian > 0);
object_property_set_link(OBJECT(dev), "dma_mr",
OBJECT(rc4030_dma_mr), &error_abort);
sysbus = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(sysbus, &error_fatal);
sysbus_mmio_map(sysbus, 0, 0x80001000);
sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 4));
/* Add MAC address with valid checksum to PROM */
prom = memory_region_get_ram_ptr(dp8393x_prom);
checksum = 0;
for (i = 0; i < 6; i++) {
prom[i] = nd->macaddr.a[i];
checksum += prom[i];
if (checksum > 0xff) {
checksum = (checksum + 1) & 0xff;
}
}
prom[7] = 0xff - checksum;
break;
} else if (is_help_option(nd->model)) {
error_report("Supported NICs: dp83932");
exit(1);
} else {
error_report("Unsupported NIC: %s", nd->model);
exit(1);
}
}
/* SCSI adapter */
dev = qdev_new(TYPE_SYSBUS_ESP);
sysbus_esp = SYSBUS_ESP(dev);
esp = &sysbus_esp->esp;
esp->dma_memory_read = rc4030_dma_read;
esp->dma_memory_write = rc4030_dma_write;
esp->dma_opaque = dmas[0];
sysbus_esp->it_shift = 0;
/* XXX for now until rc4030 has been changed to use DMA enable signal */
esp->dma_enabled = 1;
sysbus = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(sysbus, &error_fatal);
sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 5));
sysbus_mmio_map(sysbus, 0, 0x80002000);
scsi_bus_legacy_handle_cmdline(&esp->bus);
/* Floppy */
for (n = 0; n < MAX_FD; n++) {
fds[n] = drive_get(IF_FLOPPY, 0, n);
}
/* FIXME: we should enable DMA with a custom IsaDma device */
fdctrl_init_sysbus(qdev_get_gpio_in(rc4030, 1), -1, 0x80003000, fds);
/* Real time clock */
mc146818_rtc_init(isa_bus, 1980, NULL);
memory_region_init_io(rtc, NULL, &rtc_ops, NULL, "rtc", 0x1000);
memory_region_add_subregion(address_space, 0x80004000, rtc);
/* Keyboard (i8042) */
i8042_mm_init(qdev_get_gpio_in(rc4030, 6), qdev_get_gpio_in(rc4030, 7),
i8042, 0x1000, 0x1);
memory_region_add_subregion(address_space, 0x80005000, i8042);
/* Serial ports */
serial_mm_init(address_space, 0x80006000, 0,
qdev_get_gpio_in(rc4030, 8), 8000000 / 16,
serial_hd(0), DEVICE_NATIVE_ENDIAN);
serial_mm_init(address_space, 0x80007000, 0,
qdev_get_gpio_in(rc4030, 9), 8000000 / 16,
serial_hd(1), DEVICE_NATIVE_ENDIAN);
/* Parallel port */
if (parallel_hds[0])
parallel_mm_init(address_space, 0x80008000, 0,
qdev_get_gpio_in(rc4030, 0), parallel_hds[0]);
/* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
/* NVRAM */
dev = qdev_new("ds1225y");
sysbus = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(sysbus, &error_fatal);
sysbus_mmio_map(sysbus, 0, 0x80009000);
/* LED indicator */
sysbus_create_simple("jazz-led", 0x8000f000, NULL);
g_free(dmas);
}
static
void mips_magnum_init(MachineState *machine)
{
mips_jazz_init(machine, JAZZ_MAGNUM);
}
static
void mips_pica61_init(MachineState *machine)
{
mips_jazz_init(machine, JAZZ_PICA61);
}
static void mips_magnum_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "MIPS Magnum";
mc->init = mips_magnum_init;
mc->block_default_type = IF_SCSI;
mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
mc->default_ram_id = "mips_jazz.ram";
}
static const TypeInfo mips_magnum_type = {
.name = MACHINE_TYPE_NAME("magnum"),
.parent = TYPE_MACHINE,
.class_init = mips_magnum_class_init,
};
static void mips_pica61_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "Acer Pica 61";
mc->init = mips_pica61_init;
mc->block_default_type = IF_SCSI;
mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
mc->default_ram_id = "mips_jazz.ram";
}
static const TypeInfo mips_pica61_type = {
.name = MACHINE_TYPE_NAME("pica61"),
.parent = TYPE_MACHINE,
.class_init = mips_pica61_class_init,
};
static void mips_jazz_machine_init(void)
{
type_register_static(&mips_magnum_type);
type_register_static(&mips_pica61_type);
}
type_init(mips_jazz_machine_init)
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