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qemu/hw/s390x/ipl.c
Jared Rossi 455e3bc3f7 s390x: Rebuild IPLB for SCSI device directly from DIAG308 
Because virtio-scsi type devices use a non-architected IPLB pbt code they cannot
be set and stored normally. Instead, the IPLB must be rebuilt during re-ipl.

As s390x does not natively support multiple boot devices, the devno field is
used to store the position in the boot order for the device.

Handling the rebuild as part of DIAG308 removes the need to check the devices
for invalid IPLBs later in the IPL.

Signed-off-by: Jared Rossi <jrossi@linux.ibm.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20241020012953.1380075-17-jrossi@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-10-23 06:53:44 +02:00

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/*
* bootloader support
*
* Copyright IBM, Corp. 2012, 2020
*
* Authors:
* Christian Borntraeger <borntraeger@de.ibm.com>
* Janosch Frank <frankja@linux.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at your
* option) any later version. See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qemu/datadir.h"
#include "qapi/error.h"
#include "sysemu/reset.h"
#include "sysemu/runstate.h"
#include "sysemu/tcg.h"
#include "elf.h"
#include "hw/loader.h"
#include "hw/qdev-properties.h"
#include "hw/boards.h"
#include "hw/s390x/virtio-ccw.h"
#include "hw/s390x/vfio-ccw.h"
#include "hw/s390x/css.h"
#include "hw/s390x/ebcdic.h"
#include "target/s390x/kvm/pv.h"
#include "hw/scsi/scsi.h"
#include "hw/virtio/virtio-net.h"
#include "ipl.h"
#include "qemu/error-report.h"
#include "qemu/config-file.h"
#include "qemu/cutils.h"
#include "qemu/option.h"
#include "qemu/ctype.h"
#include "standard-headers/linux/virtio_ids.h"
#define KERN_IMAGE_START 0x010000UL
#define LINUX_MAGIC_ADDR 0x010008UL
#define KERN_PARM_AREA_SIZE_ADDR 0x010430UL
#define KERN_PARM_AREA 0x010480UL
#define LEGACY_KERN_PARM_AREA_SIZE 0x000380UL
#define INITRD_START 0x800000UL
#define INITRD_PARM_START 0x010408UL
#define PARMFILE_START 0x001000UL
#define ZIPL_IMAGE_START 0x009000UL
#define BIOS_MAX_SIZE 0x300000UL
#define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64)
static bool iplb_extended_needed(void *opaque)
{
S390IPLState *ipl = S390_IPL(object_resolve_path(TYPE_S390_IPL, NULL));
return ipl->iplbext_migration;
}
/* Place the IPLB chain immediately before the BIOS in memory */
static uint64_t find_iplb_chain_addr(uint64_t bios_addr, uint16_t count)
{
return (bios_addr & TARGET_PAGE_MASK)
- (count * sizeof(IplParameterBlock));
}
static const VMStateDescription vmstate_iplb_extended = {
.name = "ipl/iplb_extended",
.version_id = 0,
.minimum_version_id = 0,
.needed = iplb_extended_needed,
.fields = (const VMStateField[]) {
VMSTATE_UINT8_ARRAY(reserved_ext, IplParameterBlock, 4096 - 200),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_iplb = {
.name = "ipl/iplb",
.version_id = 0,
.minimum_version_id = 0,
.fields = (const VMStateField[]) {
VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110),
VMSTATE_UINT16(devno, IplParameterBlock),
VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88),
VMSTATE_END_OF_LIST()
},
.subsections = (const VMStateDescription * const []) {
&vmstate_iplb_extended,
NULL
}
};
static const VMStateDescription vmstate_ipl = {
.name = "ipl",
.version_id = 0,
.minimum_version_id = 0,
.fields = (const VMStateField[]) {
VMSTATE_UINT64(compat_start_addr, S390IPLState),
VMSTATE_UINT64(compat_bios_start_addr, S390IPLState),
VMSTATE_STRUCT(iplb, S390IPLState, 0, vmstate_iplb, IplParameterBlock),
VMSTATE_BOOL(iplb_valid, S390IPLState),
VMSTATE_UINT8(cssid, S390IPLState),
VMSTATE_UINT8(ssid, S390IPLState),
VMSTATE_UINT16(devno, S390IPLState),
VMSTATE_END_OF_LIST()
}
};
static S390IPLState *get_ipl_device(void)
{
return S390_IPL(object_resolve_path_type("", TYPE_S390_IPL, NULL));
}
static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr)
{
uint64_t dstaddr = *(uint64_t *) opaque;
/*
* Assuming that our s390-ccw.img was linked for starting at address 0,
* we can simply add the destination address for the final location
*/
return srcaddr + dstaddr;
}
static uint64_t get_max_kernel_cmdline_size(void)
{
uint64_t *size_ptr = rom_ptr(KERN_PARM_AREA_SIZE_ADDR, sizeof(*size_ptr));
if (size_ptr) {
uint64_t size;
size = be64_to_cpu(*size_ptr);
if (size) {
return size;
}
}
return LEGACY_KERN_PARM_AREA_SIZE;
}
static void s390_ipl_realize(DeviceState *dev, Error **errp)
{
MachineState *ms = MACHINE(qdev_get_machine());
S390IPLState *ipl = S390_IPL(dev);
uint32_t *ipl_psw;
uint64_t pentry;
char *magic;
int kernel_size;
int bios_size;
char *bios_filename;
/*
* Always load the bios if it was enforced,
* even if an external kernel has been defined.
*/
if (!ipl->kernel || ipl->enforce_bios) {
uint64_t fwbase;
if (ms->ram_size < BIOS_MAX_SIZE) {
error_setg(errp, "not enough RAM to load the BIOS file");
return;
}
fwbase = (MIN(ms->ram_size, 0x80000000U) - BIOS_MAX_SIZE) & ~0xffffUL;
bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->firmware);
if (bios_filename == NULL) {
error_setg(errp, "could not find stage1 bootloader");
return;
}
bios_size = load_elf(bios_filename, NULL,
bios_translate_addr, &fwbase,
&ipl->bios_start_addr, NULL, NULL, NULL, 1,
EM_S390, 0, 0);
if (bios_size > 0) {
/* Adjust ELF start address to final location */
ipl->bios_start_addr += fwbase;
} else {
/* Try to load non-ELF file */
bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START,
4096);
ipl->bios_start_addr = ZIPL_IMAGE_START;
}
g_free(bios_filename);
if (bios_size == -1) {
error_setg(errp, "could not load bootloader '%s'", ipl->firmware);
return;
}
/* default boot target is the bios */
ipl->start_addr = ipl->bios_start_addr;
}
if (ipl->kernel) {
kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL,
&pentry, NULL,
NULL, NULL, 1, EM_S390, 0, 0);
if (kernel_size < 0) {
kernel_size = load_image_targphys(ipl->kernel, 0, ms->ram_size);
if (kernel_size < 0) {
error_setg(errp, "could not load kernel '%s'", ipl->kernel);
return;
}
/* if this is Linux use KERN_IMAGE_START */
magic = rom_ptr(LINUX_MAGIC_ADDR, 6);
if (magic && !memcmp(magic, "S390EP", 6)) {
pentry = KERN_IMAGE_START;
} else {
/* if not Linux load the address of the (short) IPL PSW */
ipl_psw = rom_ptr(4, 4);
if (ipl_psw) {
pentry = be32_to_cpu(*ipl_psw) & PSW_MASK_SHORT_ADDR;
} else {
error_setg(errp, "Could not get IPL PSW");
return;
}
}
}
/*
* Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the
* kernel parameters here as well. Note: For old kernels (up to 3.2)
* we can not rely on the ELF entry point - it was 0x800 (the SALIPL
* loader) and it won't work. For this case we force it to 0x10000, too.
*/
if (pentry == KERN_IMAGE_START || pentry == 0x800) {
size_t cmdline_size = strlen(ipl->cmdline) + 1;
char *parm_area = rom_ptr(KERN_PARM_AREA, cmdline_size);
ipl->start_addr = KERN_IMAGE_START;
/* Overwrite parameters in the kernel image, which are "rom" */
if (parm_area) {
uint64_t max_cmdline_size = get_max_kernel_cmdline_size();
if (cmdline_size > max_cmdline_size) {
error_setg(errp,
"kernel command line exceeds maximum size:"
" %zu > %" PRIu64,
cmdline_size, max_cmdline_size);
return;
}
strcpy(parm_area, ipl->cmdline);
}
} else {
ipl->start_addr = pentry;
}
if (ipl->initrd) {
ram_addr_t initrd_offset;
int initrd_size;
uint64_t *romptr;
initrd_offset = INITRD_START;
while (kernel_size + 0x100000 > initrd_offset) {
initrd_offset += 0x100000;
}
initrd_size = load_image_targphys(ipl->initrd, initrd_offset,
ms->ram_size - initrd_offset);
if (initrd_size == -1) {
error_setg(errp, "could not load initrd '%s'", ipl->initrd);
return;
}
/*
* we have to overwrite values in the kernel image,
* which are "rom"
*/
romptr = rom_ptr(INITRD_PARM_START, 16);
if (romptr) {
stq_be_p(romptr, initrd_offset);
stq_be_p(romptr + 1, initrd_size);
}
}
}
/*
* Don't ever use the migrated values, they could come from a different
* BIOS and therefore don't work. But still migrate the values, so
* QEMUs relying on it don't break.
*/
ipl->compat_start_addr = ipl->start_addr;
ipl->compat_bios_start_addr = ipl->bios_start_addr;
/*
* Because this Device is not on any bus in the qbus tree (it is
* not a sysbus device and it's not on some other bus like a PCI
* bus) it will not be automatically reset by the 'reset the
* sysbus' hook registered by vl.c like most devices. So we must
* manually register a reset hook for it.
* TODO: there should be a better way to do this.
*/
qemu_register_reset(resettable_cold_reset_fn, dev);
}
static Property s390_ipl_properties[] = {
DEFINE_PROP_STRING("kernel", S390IPLState, kernel),
DEFINE_PROP_STRING("initrd", S390IPLState, initrd),
DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline),
DEFINE_PROP_STRING("firmware", S390IPLState, firmware),
DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false),
DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration,
true),
DEFINE_PROP_END_OF_LIST(),
};
static void s390_ipl_set_boot_menu(S390IPLState *ipl)
{
unsigned long splash_time = 0;
if (!get_boot_device(0)) {
if (current_machine->boot_config.has_menu && current_machine->boot_config.menu) {
error_report("boot menu requires a bootindex to be specified for "
"the IPL device");
}
return;
}
switch (ipl->iplb.pbt) {
case S390_IPL_TYPE_CCW:
/* In the absence of -boot menu, use zipl parameters */
if (!current_machine->boot_config.has_menu) {
ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL;
return;
}
break;
case S390_IPL_TYPE_QEMU_SCSI:
break;
default:
if (current_machine->boot_config.has_menu && current_machine->boot_config.menu) {
error_report("boot menu is not supported for this device type");
}
return;
}
if (!current_machine->boot_config.has_menu || !current_machine->boot_config.menu) {
return;
}
ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD;
if (current_machine->boot_config.has_splash_time) {
splash_time = current_machine->boot_config.splash_time;
}
if (splash_time > 0xffffffff) {
error_report("splash-time is too large, forcing it to max value");
ipl->qipl.boot_menu_timeout = 0xffffffff;
return;
}
ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time);
}
#define CCW_DEVTYPE_NONE 0x00
#define CCW_DEVTYPE_VIRTIO 0x01
#define CCW_DEVTYPE_VIRTIO_NET 0x02
#define CCW_DEVTYPE_SCSI 0x03
#define CCW_DEVTYPE_VFIO 0x04
static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype)
{
CcwDevice *ccw_dev = NULL;
int tmp_dt = CCW_DEVTYPE_NONE;
if (dev_st) {
VirtIONet *virtio_net_dev = (VirtIONet *)
object_dynamic_cast(OBJECT(dev_st), TYPE_VIRTIO_NET);
VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *)
object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent),
TYPE_VIRTIO_CCW_DEVICE);
VFIOCCWDevice *vfio_ccw_dev = (VFIOCCWDevice *)
object_dynamic_cast(OBJECT(dev_st), TYPE_VFIO_CCW);
if (virtio_ccw_dev) {
ccw_dev = CCW_DEVICE(virtio_ccw_dev);
if (virtio_net_dev) {
tmp_dt = CCW_DEVTYPE_VIRTIO_NET;
} else {
tmp_dt = CCW_DEVTYPE_VIRTIO;
}
} else if (vfio_ccw_dev) {
ccw_dev = CCW_DEVICE(vfio_ccw_dev);
tmp_dt = CCW_DEVTYPE_VFIO;
} else {
SCSIDevice *sd = (SCSIDevice *)
object_dynamic_cast(OBJECT(dev_st),
TYPE_SCSI_DEVICE);
if (sd) {
SCSIBus *sbus = scsi_bus_from_device(sd);
VirtIODevice *vdev = (VirtIODevice *)
object_dynamic_cast(OBJECT(sbus->qbus.parent),
TYPE_VIRTIO_DEVICE);
if (vdev) {
ccw_dev = (CcwDevice *)
object_dynamic_cast(OBJECT(qdev_get_parent_bus(DEVICE(vdev))->parent),
TYPE_CCW_DEVICE);
if (ccw_dev) {
tmp_dt = CCW_DEVTYPE_SCSI;
}
}
}
}
}
if (devtype) {
*devtype = tmp_dt;
}
return ccw_dev;
}
static uint64_t s390_ipl_map_iplb_chain(IplParameterBlock *iplb_chain)
{
S390IPLState *ipl = get_ipl_device();
uint16_t count = be16_to_cpu(ipl->qipl.chain_len);
uint64_t len = sizeof(IplParameterBlock) * count;
uint64_t chain_addr = find_iplb_chain_addr(ipl->bios_start_addr, count);
cpu_physical_memory_write(chain_addr, iplb_chain, len);
return chain_addr;
}
void s390_ipl_fmt_loadparm(uint8_t *loadparm, char *str, Error **errp)
{
int i;
/* Initialize the loadparm with spaces */
memset(loadparm, ' ', LOADPARM_LEN);
for (i = 0; i < LOADPARM_LEN && str[i]; i++) {
uint8_t c = qemu_toupper(str[i]); /* mimic HMC */
if (qemu_isalnum(c) || c == '.' || c == ' ') {
loadparm[i] = c;
} else {
error_setg(errp, "LOADPARM: invalid character '%c' (ASCII 0x%02x)",
c, c);
return;
}
}
}
void s390_ipl_convert_loadparm(char *ascii_lp, uint8_t *ebcdic_lp)
{
int i;
/* Initialize the loadparm with EBCDIC spaces (0x40) */
memset(ebcdic_lp, '@', LOADPARM_LEN);
for (i = 0; i < LOADPARM_LEN && ascii_lp[i]; i++) {
ebcdic_lp[i] = ascii2ebcdic[(uint8_t) ascii_lp[i]];
}
}
static bool s390_build_iplb(DeviceState *dev_st, IplParameterBlock *iplb)
{
CcwDevice *ccw_dev = NULL;
SCSIDevice *sd;
int devtype;
uint8_t *lp;
/*
* Currently allow IPL only from CCW devices.
*/
ccw_dev = s390_get_ccw_device(dev_st, &devtype);
if (ccw_dev) {
lp = ccw_dev->loadparm;
switch (devtype) {
case CCW_DEVTYPE_SCSI:
sd = SCSI_DEVICE(dev_st);
iplb->len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN);
iplb->blk0_len =
cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN);
iplb->pbt = S390_IPL_TYPE_QEMU_SCSI;
iplb->scsi.lun = cpu_to_be32(sd->lun);
iplb->scsi.target = cpu_to_be16(sd->id);
iplb->scsi.channel = cpu_to_be16(sd->channel);
iplb->scsi.devno = cpu_to_be16(ccw_dev->sch->devno);
iplb->scsi.ssid = ccw_dev->sch->ssid & 3;
break;
case CCW_DEVTYPE_VFIO:
iplb->len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN);
iplb->pbt = S390_IPL_TYPE_CCW;
iplb->ccw.devno = cpu_to_be16(ccw_dev->sch->devno);
iplb->ccw.ssid = ccw_dev->sch->ssid & 3;
break;
case CCW_DEVTYPE_VIRTIO_NET:
case CCW_DEVTYPE_VIRTIO:
iplb->len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN);
iplb->blk0_len =
cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN);
iplb->pbt = S390_IPL_TYPE_CCW;
iplb->ccw.devno = cpu_to_be16(ccw_dev->sch->devno);
iplb->ccw.ssid = ccw_dev->sch->ssid & 3;
break;
}
/* If the device loadparm is empty use the global machine loadparm */
if (memcmp(lp, NO_LOADPARM, 8) == 0) {
lp = S390_CCW_MACHINE(qdev_get_machine())->loadparm;
}
s390_ipl_convert_loadparm((char *)lp, iplb->loadparm);
iplb->flags |= DIAG308_FLAGS_LP_VALID;
return true;
}
return false;
}
void s390_rebuild_iplb(uint16_t dev_index, IplParameterBlock *iplb)
{
S390IPLState *ipl = get_ipl_device();
uint16_t index;
index = ipl->rebuilt_iplb ? ipl->iplb_index : dev_index;
ipl->rebuilt_iplb = s390_build_iplb(get_boot_device(index), iplb);
ipl->iplb_index = index;
}
static bool s390_init_all_iplbs(S390IPLState *ipl)
{
int iplb_num = 0;
IplParameterBlock iplb_chain[7];
DeviceState *dev_st = get_boot_device(0);
Object *machine = qdev_get_machine();
/*
* Parse the boot devices. Generate an IPLB for only the first boot device
* which will later be set with DIAG308.
*/
if (!dev_st) {
ipl->qipl.chain_len = 0;
return false;
}
/* If no machine loadparm was defined fill it with spaces */
if (memcmp(S390_CCW_MACHINE(machine)->loadparm, NO_LOADPARM, 8) == 0) {
object_property_set_str(machine, "loadparm", " ", NULL);
}
iplb_num = 1;
s390_build_iplb(dev_st, &ipl->iplb);
/* Index any fallback boot devices */
while (get_boot_device(iplb_num)) {
iplb_num++;
}
if (iplb_num > MAX_BOOT_DEVS) {
warn_report("Excess boot devices defined! %d boot devices found, "
"but only the first %d will be considered.",
iplb_num, MAX_BOOT_DEVS);
iplb_num = MAX_BOOT_DEVS;
}
ipl->qipl.chain_len = cpu_to_be16(iplb_num - 1);
/*
* Build fallback IPLBs for any boot devices above index 0, up to a
* maximum amount as defined in ipl.h
*/
if (iplb_num > 1) {
/* Start at 1 because the IPLB for boot index 0 is not chained */
for (int i = 1; i < iplb_num; i++) {
dev_st = get_boot_device(i);
s390_build_iplb(dev_st, &iplb_chain[i - 1]);
}
ipl->qipl.next_iplb = cpu_to_be64(s390_ipl_map_iplb_chain(iplb_chain));
}
return iplb_num;
}
static void update_machine_ipl_properties(IplParameterBlock *iplb)
{
Object *machine = qdev_get_machine();
Error *err = NULL;
/* Sync loadparm */
if (iplb->flags & DIAG308_FLAGS_LP_VALID) {
uint8_t *ebcdic_loadparm = iplb->loadparm;
char ascii_loadparm[9];
int i;
for (i = 0; i < 8 && ebcdic_loadparm[i]; i++) {
ascii_loadparm[i] = ebcdic2ascii[(uint8_t) ebcdic_loadparm[i]];
}
ascii_loadparm[i] = 0;
object_property_set_str(machine, "loadparm", ascii_loadparm, &err);
} else {
object_property_set_str(machine, "loadparm", " ", &err);
}
if (err) {
warn_report_err(err);
}
}
void s390_ipl_update_diag308(IplParameterBlock *iplb)
{
S390IPLState *ipl = get_ipl_device();
/*
* The IPLB set and retrieved by subcodes 8/9 is completely
* separate from the one managed via subcodes 5/6.
*/
if (iplb->pbt == S390_IPL_TYPE_PV) {
ipl->iplb_pv = *iplb;
ipl->iplb_valid_pv = true;
} else {
ipl->iplb = *iplb;
ipl->iplb_valid = true;
}
update_machine_ipl_properties(iplb);
}
IplParameterBlock *s390_ipl_get_iplb_pv(void)
{
S390IPLState *ipl = get_ipl_device();
if (!ipl->iplb_valid_pv) {
return NULL;
}
return &ipl->iplb_pv;
}
IplParameterBlock *s390_ipl_get_iplb(void)
{
S390IPLState *ipl = get_ipl_device();
if (!ipl->iplb_valid) {
return NULL;
}
return &ipl->iplb;
}
void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type)
{
S390IPLState *ipl = get_ipl_device();
if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) {
/* use CPU 0 for full resets */
ipl->reset_cpu_index = 0;
} else {
ipl->reset_cpu_index = cs->cpu_index;
}
ipl->reset_type = reset_type;
if (reset_type == S390_RESET_MODIFIED_CLEAR ||
reset_type == S390_RESET_LOAD_NORMAL ||
reset_type == S390_RESET_PV) {
/* ignore -no-reboot, send no event */
qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET);
} else {
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
}
/* as this is triggered by a CPU, make sure to exit the loop */
if (tcg_enabled()) {
cpu_loop_exit(cs);
}
}
void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type)
{
S390IPLState *ipl = get_ipl_device();
*cs = qemu_get_cpu(ipl->reset_cpu_index);
if (!*cs) {
/* use any CPU */
*cs = first_cpu;
}
*reset_type = ipl->reset_type;
}
void s390_ipl_clear_reset_request(void)
{
S390IPLState *ipl = get_ipl_device();
ipl->reset_type = S390_RESET_EXTERNAL;
/* use CPU 0 for full resets */
ipl->reset_cpu_index = 0;
}
static void s390_ipl_prepare_qipl(S390CPU *cpu)
{
S390IPLState *ipl = get_ipl_device();
uint8_t *addr;
uint64_t len = 4096;
addr = cpu_physical_memory_map(cpu->env.psa, &len, true);
if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) {
error_report("Cannot set QEMU IPL parameters");
return;
}
memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters));
cpu_physical_memory_unmap(addr, len, 1, len);
}
int s390_ipl_prepare_pv_header(Error **errp)
{
IplParameterBlock *ipib = s390_ipl_get_iplb_pv();
IPLBlockPV *ipib_pv = &ipib->pv;
void *hdr = g_malloc(ipib_pv->pv_header_len);
int rc;
cpu_physical_memory_read(ipib_pv->pv_header_addr, hdr,
ipib_pv->pv_header_len);
rc = s390_pv_set_sec_parms((uintptr_t)hdr, ipib_pv->pv_header_len, errp);
g_free(hdr);
return rc;
}
int s390_ipl_pv_unpack(void)
{
IplParameterBlock *ipib = s390_ipl_get_iplb_pv();
IPLBlockPV *ipib_pv = &ipib->pv;
int i, rc = 0;
for (i = 0; i < ipib_pv->num_comp; i++) {
rc = s390_pv_unpack(ipib_pv->components[i].addr,
TARGET_PAGE_ALIGN(ipib_pv->components[i].size),
ipib_pv->components[i].tweak_pref);
if (rc) {
break;
}
}
return rc;
}
void s390_ipl_prepare_cpu(S390CPU *cpu)
{
S390IPLState *ipl = get_ipl_device();
cpu->env.psw.addr = ipl->start_addr;
cpu->env.psw.mask = IPL_PSW_MASK;
if (!ipl->kernel || ipl->iplb_valid) {
cpu->env.psw.addr = ipl->bios_start_addr;
if (!ipl->iplb_valid) {
ipl->iplb_valid = s390_init_all_iplbs(ipl);
} else {
ipl->qipl.chain_len = 0;
}
}
s390_ipl_set_boot_menu(ipl);
s390_ipl_prepare_qipl(cpu);
}
static void s390_ipl_reset(DeviceState *dev)
{
S390IPLState *ipl = S390_IPL(dev);
if (ipl->reset_type != S390_RESET_REIPL) {
ipl->iplb_valid = false;
memset(&ipl->iplb, 0, sizeof(IplParameterBlock));
}
}
static void s390_ipl_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = s390_ipl_realize;
device_class_set_props(dc, s390_ipl_properties);
device_class_set_legacy_reset(dc, s390_ipl_reset);
dc->vmsd = &vmstate_ipl;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
/* Reason: Loads the ROMs and thus can only be used one time - internally */
dc->user_creatable = false;
}
static const TypeInfo s390_ipl_info = {
.class_init = s390_ipl_class_init,
.parent = TYPE_DEVICE,
.name = TYPE_S390_IPL,
.instance_size = sizeof(S390IPLState),
};
static void s390_ipl_register_types(void)
{
type_register_static(&s390_ipl_info);
}
type_init(s390_ipl_register_types)
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