mirror of
https://github.com/qemu/qemu.git
synced 2024-12-11 12:43:55 +08:00
c165473269
We set default boot order "cad" in every single machine definition except "pseries" and "moxiesim", even though very few boards actually care for boot order, and "cad" makes sense for even fewer. Machines that care: * pc and its variants Accept up to three letters 'a', 'b' (undocumented alias for 'a'), 'c', 'd' and 'n'. Reject all others (fatal with -boot). * nseries (n800, n810) Check whether order starts with 'n'. Silently ignored otherwise. * prep, g3beige, mac99 Extract the first character the machine understands (subset of 'a'..'f'). Silently ignored otherwise. * spapr Accept an arbitrary string (vl.c restricts it to contain only 'a'..'p', no duplicates). * sun4[mdc] Use the first character. Silently ignored otherwise. Strip characters these machines ignore from their default boot order. For all other machines, remove the unused default boot order alltogether. Note that my rename of QEMUMachine member boot_order to default_boot_order and QEMUMachineInitArgs member boot_device to boot_order has a welcome side effect: it makes every use of boot orders visible in this patch, for easy review. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
304 lines
8.0 KiB
C
304 lines
8.0 KiB
C
/*
|
|
* QEMU S390 virtio target
|
|
*
|
|
* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
|
|
* Copyright IBM Corp 2012
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* Contributions after 2012-10-29 are licensed under the terms of the
|
|
* GNU GPL, version 2 or (at your option) any later version.
|
|
*
|
|
* You should have received a copy of the GNU (Lesser) General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "hw/hw.h"
|
|
#include "block/block.h"
|
|
#include "sysemu/blockdev.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "net/net.h"
|
|
#include "hw/boards.h"
|
|
#include "monitor/monitor.h"
|
|
#include "hw/loader.h"
|
|
#include "hw/virtio/virtio.h"
|
|
#include "hw/sysbus.h"
|
|
#include "sysemu/kvm.h"
|
|
#include "exec/address-spaces.h"
|
|
|
|
#include "hw/s390x/s390-virtio-bus.h"
|
|
#include "hw/s390x/sclp.h"
|
|
#include "hw/s390x/s390-virtio.h"
|
|
|
|
//#define DEBUG_S390
|
|
|
|
#ifdef DEBUG_S390
|
|
#define DPRINTF(fmt, ...) \
|
|
do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
|
|
#else
|
|
#define DPRINTF(fmt, ...) \
|
|
do { } while (0)
|
|
#endif
|
|
|
|
#define MAX_BLK_DEVS 10
|
|
#define ZIPL_FILENAME "s390-zipl.rom"
|
|
|
|
static VirtIOS390Bus *s390_bus;
|
|
static S390CPU **ipi_states;
|
|
|
|
S390CPU *s390_cpu_addr2state(uint16_t cpu_addr)
|
|
{
|
|
if (cpu_addr >= smp_cpus) {
|
|
return NULL;
|
|
}
|
|
|
|
return ipi_states[cpu_addr];
|
|
}
|
|
|
|
static int s390_virtio_hcall_notify(const uint64_t *args)
|
|
{
|
|
uint64_t mem = args[0];
|
|
int r = 0, i;
|
|
|
|
if (mem > ram_size) {
|
|
VirtIOS390Device *dev = s390_virtio_bus_find_vring(s390_bus, mem, &i);
|
|
if (dev) {
|
|
virtio_queue_notify(dev->vdev, i);
|
|
} else {
|
|
r = -EINVAL;
|
|
}
|
|
} else {
|
|
/* Early printk */
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static int s390_virtio_hcall_reset(const uint64_t *args)
|
|
{
|
|
uint64_t mem = args[0];
|
|
VirtIOS390Device *dev;
|
|
|
|
dev = s390_virtio_bus_find_mem(s390_bus, mem);
|
|
if (dev == NULL) {
|
|
return -EINVAL;
|
|
}
|
|
virtio_reset(dev->vdev);
|
|
stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS, 0);
|
|
s390_virtio_device_sync(dev);
|
|
s390_virtio_reset_idx(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int s390_virtio_hcall_set_status(const uint64_t *args)
|
|
{
|
|
uint64_t mem = args[0];
|
|
int r = 0;
|
|
VirtIOS390Device *dev;
|
|
|
|
dev = s390_virtio_bus_find_mem(s390_bus, mem);
|
|
if (dev) {
|
|
s390_virtio_device_update_status(dev);
|
|
} else {
|
|
r = -EINVAL;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static void s390_virtio_register_hcalls(void)
|
|
{
|
|
s390_register_virtio_hypercall(KVM_S390_VIRTIO_NOTIFY,
|
|
s390_virtio_hcall_notify);
|
|
s390_register_virtio_hypercall(KVM_S390_VIRTIO_RESET,
|
|
s390_virtio_hcall_reset);
|
|
s390_register_virtio_hypercall(KVM_S390_VIRTIO_SET_STATUS,
|
|
s390_virtio_hcall_set_status);
|
|
}
|
|
|
|
/*
|
|
* The number of running CPUs. On s390 a shutdown is the state of all CPUs
|
|
* being either stopped or disabled (for interrupts) waiting. We have to
|
|
* track this number to call the shutdown sequence accordingly. This
|
|
* number is modified either on startup or while holding the big qemu lock.
|
|
*/
|
|
static unsigned s390_running_cpus;
|
|
|
|
void s390_add_running_cpu(S390CPU *cpu)
|
|
{
|
|
CPUState *cs = CPU(cpu);
|
|
CPUS390XState *env = &cpu->env;
|
|
|
|
if (cs->halted) {
|
|
s390_running_cpus++;
|
|
cs->halted = 0;
|
|
env->exception_index = -1;
|
|
}
|
|
}
|
|
|
|
unsigned s390_del_running_cpu(S390CPU *cpu)
|
|
{
|
|
CPUState *cs = CPU(cpu);
|
|
CPUS390XState *env = &cpu->env;
|
|
|
|
if (cs->halted == 0) {
|
|
assert(s390_running_cpus >= 1);
|
|
s390_running_cpus--;
|
|
cs->halted = 1;
|
|
env->exception_index = EXCP_HLT;
|
|
}
|
|
return s390_running_cpus;
|
|
}
|
|
|
|
void s390_init_ipl_dev(const char *kernel_filename,
|
|
const char *kernel_cmdline,
|
|
const char *initrd_filename,
|
|
const char *firmware)
|
|
{
|
|
DeviceState *dev;
|
|
|
|
dev = qdev_create(NULL, "s390-ipl");
|
|
if (kernel_filename) {
|
|
qdev_prop_set_string(dev, "kernel", kernel_filename);
|
|
}
|
|
if (initrd_filename) {
|
|
qdev_prop_set_string(dev, "initrd", initrd_filename);
|
|
}
|
|
qdev_prop_set_string(dev, "cmdline", kernel_cmdline);
|
|
qdev_prop_set_string(dev, "firmware", firmware);
|
|
qdev_init_nofail(dev);
|
|
}
|
|
|
|
void s390_init_cpus(const char *cpu_model, uint8_t *storage_keys)
|
|
{
|
|
int i;
|
|
|
|
if (cpu_model == NULL) {
|
|
cpu_model = "host";
|
|
}
|
|
|
|
ipi_states = g_malloc(sizeof(S390CPU *) * smp_cpus);
|
|
|
|
for (i = 0; i < smp_cpus; i++) {
|
|
S390CPU *cpu;
|
|
CPUState *cs;
|
|
|
|
cpu = cpu_s390x_init(cpu_model);
|
|
cs = CPU(cpu);
|
|
|
|
ipi_states[i] = cpu;
|
|
cs->halted = 1;
|
|
cpu->env.exception_index = EXCP_HLT;
|
|
cpu->env.storage_keys = storage_keys;
|
|
}
|
|
}
|
|
|
|
|
|
void s390_create_virtio_net(BusState *bus, const char *name)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < nb_nics; i++) {
|
|
NICInfo *nd = &nd_table[i];
|
|
DeviceState *dev;
|
|
|
|
if (!nd->model) {
|
|
nd->model = g_strdup("virtio");
|
|
}
|
|
|
|
if (strcmp(nd->model, "virtio")) {
|
|
fprintf(stderr, "S390 only supports VirtIO nics\n");
|
|
exit(1);
|
|
}
|
|
|
|
dev = qdev_create(bus, name);
|
|
qdev_set_nic_properties(dev, nd);
|
|
qdev_init_nofail(dev);
|
|
}
|
|
}
|
|
|
|
/* PC hardware initialisation */
|
|
static void s390_init(QEMUMachineInitArgs *args)
|
|
{
|
|
ram_addr_t my_ram_size = args->ram_size;
|
|
MemoryRegion *sysmem = get_system_memory();
|
|
MemoryRegion *ram = g_new(MemoryRegion, 1);
|
|
int shift = 0;
|
|
uint8_t *storage_keys;
|
|
void *virtio_region;
|
|
hwaddr virtio_region_len;
|
|
hwaddr virtio_region_start;
|
|
|
|
/* s390x ram size detection needs a 16bit multiplier + an increment. So
|
|
guests > 64GB can be specified in 2MB steps etc. */
|
|
while ((my_ram_size >> (20 + shift)) > 65535) {
|
|
shift++;
|
|
}
|
|
my_ram_size = my_ram_size >> (20 + shift) << (20 + shift);
|
|
|
|
/* let's propagate the changed ram size into the global variable. */
|
|
ram_size = my_ram_size;
|
|
|
|
/* get a BUS */
|
|
s390_bus = s390_virtio_bus_init(&my_ram_size);
|
|
s390_sclp_init();
|
|
s390_init_ipl_dev(args->kernel_filename, args->kernel_cmdline,
|
|
args->initrd_filename, ZIPL_FILENAME);
|
|
|
|
/* register hypercalls */
|
|
s390_virtio_register_hcalls();
|
|
|
|
/* allocate RAM */
|
|
memory_region_init_ram(ram, NULL, "s390.ram", my_ram_size);
|
|
vmstate_register_ram_global(ram);
|
|
memory_region_add_subregion(sysmem, 0, ram);
|
|
|
|
/* clear virtio region */
|
|
virtio_region_len = my_ram_size - ram_size;
|
|
virtio_region_start = ram_size;
|
|
virtio_region = cpu_physical_memory_map(virtio_region_start,
|
|
&virtio_region_len, true);
|
|
memset(virtio_region, 0, virtio_region_len);
|
|
cpu_physical_memory_unmap(virtio_region, virtio_region_len, 1,
|
|
virtio_region_len);
|
|
|
|
/* allocate storage keys */
|
|
storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE);
|
|
|
|
/* init CPUs */
|
|
s390_init_cpus(args->cpu_model, storage_keys);
|
|
|
|
/* Create VirtIO network adapters */
|
|
s390_create_virtio_net((BusState *)s390_bus, "virtio-net-s390");
|
|
}
|
|
|
|
static QEMUMachine s390_machine = {
|
|
.name = "s390-virtio",
|
|
.alias = "s390",
|
|
.desc = "VirtIO based S390 machine",
|
|
.init = s390_init,
|
|
.block_default_type = IF_VIRTIO,
|
|
.no_cdrom = 1,
|
|
.no_floppy = 1,
|
|
.no_serial = 1,
|
|
.no_parallel = 1,
|
|
.no_sdcard = 1,
|
|
.use_virtcon = 1,
|
|
.max_cpus = 255,
|
|
.is_default = 1,
|
|
};
|
|
|
|
static void s390_machine_init(void)
|
|
{
|
|
qemu_register_machine(&s390_machine);
|
|
}
|
|
|
|
machine_init(s390_machine_init);
|