[mirror_qemu.git] / hw / s390x / ipl.c

/*
 * bootloader support
 *
 * Copyright IBM, Corp. 2012
 *
 * Authors:
 *  Christian Borntraeger <borntraeger@de.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 "qapi/error.h"
#include "sysemu/sysemu.h"
#include "cpu.h"
#include "elf.h"
#include "hw/loader.h"
#include "hw/s390x/virtio-ccw.h"
#include "hw/s390x/css.h"
#include "ipl.h"

#define KERN_IMAGE_START                0x010000UL
#define KERN_PARM_AREA                  0x010480UL
#define INITRD_START                    0x800000UL
#define INITRD_PARM_START               0x010408UL
#define INITRD_PARM_SIZE                0x010410UL
#define PARMFILE_START                  0x001000UL
#define ZIPL_IMAGE_START                0x009000UL
#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;
}

static const VMStateDescription vmstate_iplb_extended = {
    .name = "ipl/iplb_extended",
    .version_id = 0,
    .minimum_version_id = 0,
    .needed = iplb_extended_needed,
    .fields = (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 = (VMStateField[]) {
        VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110),
        VMSTATE_UINT16(devno, IplParameterBlock),
        VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88),
        VMSTATE_END_OF_LIST()
    },
    .subsections = (const VMStateDescription*[]) {
        &vmstate_iplb_extended,
        NULL
    }
};

static const VMStateDescription vmstate_ipl = {
    .name = "ipl",
    .version_id = 0,
    .minimum_version_id = 0,
    .fields = (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 void s390_ipl_realize(DeviceState *dev, Error **errp)
{
    S390IPLState *ipl = S390_IPL(dev);
    uint64_t pentry = KERN_IMAGE_START;
    int kernel_size;
    Error *err = NULL;

    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 = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL;

        if (bios_name == NULL) {
            bios_name = ipl->firmware;
        }

        bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
        if (bios_filename == NULL) {
            error_setg(&err, "could not find stage1 bootloader");
            goto error;
        }

        bios_size = load_elf(bios_filename, bios_translate_addr, &fwbase,
                             &ipl->bios_start_addr, 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(&err, "could not load bootloader '%s'", bios_name);
            goto error;
        }

        /* default boot target is the bios */
        ipl->start_addr = ipl->bios_start_addr;
    }

    if (ipl->kernel) {
        kernel_size = load_elf(ipl->kernel, NULL, NULL, &pentry, NULL,
                               NULL, 1, EM_S390, 0, 0);
        if (kernel_size < 0) {
            kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
        }
        if (kernel_size < 0) {
            error_setg(&err, "could not load kernel '%s'", ipl->kernel);
            goto error;
        }
        /*
         * 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) {
            ipl->start_addr = KERN_IMAGE_START;
            /* Overwrite parameters in the kernel image, which are "rom" */
            strcpy(rom_ptr(KERN_PARM_AREA), ipl->cmdline);
        } else {
            ipl->start_addr = pentry;
        }

        if (ipl->initrd) {
            ram_addr_t initrd_offset;
            int initrd_size;

            initrd_offset = INITRD_START;
            while (kernel_size + 0x100000 > initrd_offset) {
                initrd_offset += 0x100000;
            }
            initrd_size = load_image_targphys(ipl->initrd, initrd_offset,
                                              ram_size - initrd_offset);
            if (initrd_size == -1) {
                error_setg(&err, "could not load initrd '%s'", ipl->initrd);
                goto error;
            }

            /*
             * we have to overwrite values in the kernel image,
             * which are "rom"
             */
            stq_p(rom_ptr(INITRD_PARM_START), initrd_offset);
            stq_p(rom_ptr(INITRD_PARM_SIZE), 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;
    qemu_register_reset(qdev_reset_all_fn, dev);
error:
    error_propagate(errp, err);
}

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 bool s390_gen_initial_iplb(S390IPLState *ipl)
{
    DeviceState *dev_st;

    dev_st = get_boot_device(0);
    if (dev_st) {
        VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *)
            object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent),
                TYPE_VIRTIO_CCW_DEVICE);
        SCSIDevice *sd = (SCSIDevice *) object_dynamic_cast(OBJECT(dev_st),
                                                            TYPE_SCSI_DEVICE);
        if (virtio_ccw_dev) {
            CcwDevice *ccw_dev = CCW_DEVICE(virtio_ccw_dev);

            ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN);
            ipl->iplb.blk0_len =
                cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN);
            ipl->iplb.pbt = S390_IPL_TYPE_CCW;
            ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno);
            ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3;
            return true;
        } else if (sd) {
            SCSIBus *bus = scsi_bus_from_device(sd);
            VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus);
            VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, vdev);
            CcwDevice *ccw_dev = CCW_DEVICE(scsi_ccw);

            ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN);
            ipl->iplb.blk0_len =
                cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN);
            ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI;
            ipl->iplb.scsi.lun = cpu_to_be32(sd->lun);
            ipl->iplb.scsi.target = cpu_to_be16(sd->id);
            ipl->iplb.scsi.channel = cpu_to_be16(sd->channel);
            ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno);
            ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3;
            return true;
        }
    }

    return false;
}

void s390_ipl_update_diag308(IplParameterBlock *iplb)
{
    S390IPLState *ipl = get_ipl_device();

    ipl->iplb = *iplb;
    ipl->iplb_valid = true;
}

IplParameterBlock *s390_ipl_get_iplb(void)
{
    S390IPLState *ipl = get_ipl_device();

    if (!ipl->iplb_valid) {
        return NULL;
    }
    return &ipl->iplb;
}

void s390_reipl_request(void)
{
    S390IPLState *ipl = get_ipl_device();

    ipl->reipl_requested = true;
    qemu_system_reset_request();
}

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_gen_initial_iplb(ipl);
        }
    }
}

static void s390_ipl_reset(DeviceState *dev)
{
    S390IPLState *ipl = S390_IPL(dev);

    if (!ipl->reipl_requested) {
        ipl->iplb_valid = false;
        memset(&ipl->iplb, 0, sizeof(IplParameterBlock));
    }
    ipl->reipl_requested = false;
}

static void s390_ipl_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);

    dc->realize = s390_ipl_realize;
    dc->props = s390_ipl_properties;
    dc->reset = s390_ipl_reset;
    dc->vmsd = &vmstate_ipl;
    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
}

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)
Commit	Line	Data
e674a49a CB	1	/*
	2	* bootloader support
	3	*
	4	* Copyright IBM, Corp. 2012
	5	*
	6	* Authors:
	7	* Christian Borntraeger <borntraeger@de.ibm.com>
	8	*
	9	* This work is licensed under the terms of the GNU GPL, version 2 or (at your
	10	* option) any later version. See the COPYING file in the top-level directory.
	11	*
	12	*/
	13
9615495a	14	#include "qemu/osdep.h"
da34e65c	15	#include "qapi/error.h"
e674a49a CB	16	#include "sysemu/sysemu.h"
	17	#include "cpu.h"
	18	#include "elf.h"
	19	#include "hw/loader.h"
ba1509c0 DD	20	#include "hw/s390x/virtio-ccw.h"
ba1509c0 DD	21	#include "hw/s390x/css.h"
df75a4e2	22	#include "ipl.h"
e674a49a CB	23
	24	#define KERN_IMAGE_START 0x010000UL
	25	#define KERN_PARM_AREA 0x010480UL
	26	#define INITRD_START 0x800000UL
	27	#define INITRD_PARM_START 0x010408UL
	28	#define INITRD_PARM_SIZE 0x010410UL
	29	#define PARMFILE_START 0x001000UL
e674a49a CB	30	#define ZIPL_IMAGE_START 0x009000UL
	31	#define IPL_PSW_MASK (PSW_MASK_32 \| PSW_MASK_64)
	32
04ca4b92 AY	33	static bool iplb_extended_needed(void *opaque)
	34	{
	35	S390IPLState *ipl = S390_IPL(object_resolve_path(TYPE_S390_IPL, NULL));
	36
	37	return ipl->iplbext_migration;
	38	}
	39
	40	static const VMStateDescription vmstate_iplb_extended = {
	41	.name = "ipl/iplb_extended",
	42	.version_id = 0,
	43	.minimum_version_id = 0,
	44	.needed = iplb_extended_needed,
	45	.fields = (VMStateField[]) {
	46	VMSTATE_UINT8_ARRAY(reserved_ext, IplParameterBlock, 4096 - 200),
	47	VMSTATE_END_OF_LIST()
	48	}
	49	};
	50
2e13fbe4 FZ	51	static const VMStateDescription vmstate_iplb = {
	52	.name = "ipl/iplb",
	53	.version_id = 0,
	54	.minimum_version_id = 0,
	55	.fields = (VMStateField[]) {
	56	VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110),
	57	VMSTATE_UINT16(devno, IplParameterBlock),
	58	VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88),
	59	VMSTATE_END_OF_LIST()
04ca4b92 AY	60	},
	61	.subsections = (const VMStateDescription*[]) {
	62	&vmstate_iplb_extended,
	63	NULL
2e13fbe4 FZ	64	}
	65	};
	66
	67	static const VMStateDescription vmstate_ipl = {
	68	.name = "ipl",
	69	.version_id = 0,
	70	.minimum_version_id = 0,
	71	.fields = (VMStateField[]) {
bb099546 DH	72	VMSTATE_UINT64(compat_start_addr, S390IPLState),
bb099546 DH	73	VMSTATE_UINT64(compat_bios_start_addr, S390IPLState),
2e13fbe4 FZ	74	VMSTATE_STRUCT(iplb, S390IPLState, 0, vmstate_iplb, IplParameterBlock),
	75	VMSTATE_BOOL(iplb_valid, S390IPLState),
	76	VMSTATE_UINT8(cssid, S390IPLState),
	77	VMSTATE_UINT8(ssid, S390IPLState),
	78	VMSTATE_UINT16(devno, S390IPLState),
	79	VMSTATE_END_OF_LIST()
	80	}
	81	};
e674a49a	82
feacc6c2 DH	83	static S390IPLState *get_ipl_device(void)
	84	{
	85	return S390_IPL(object_resolve_path_type("", TYPE_S390_IPL, NULL));
	86	}
	87
d884c86d TH	88	static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr)
	89	{
	90	uint64_t dstaddr = (uint64_t ) opaque;
	91	/*
	92	* Assuming that our s390-ccw.img was linked for starting at address 0,
	93	* we can simply add the destination address for the final location
	94	*/
	95	return srcaddr + dstaddr;
	96	}
	97
04fccf10	98	static void s390_ipl_realize(DeviceState dev, Error *errp)
e674a49a CB	99	{
e674a49a CB	100	S390IPLState *ipl = S390_IPL(dev);
7691993c	101	uint64_t pentry = KERN_IMAGE_START;
376827d4	102	int kernel_size;
e6da780d	103	Error *err = NULL;
e674a49a	104
f0180f91 FZ	105	int bios_size;
f0180f91 FZ	106	char *bios_filename;
e674a49a	107
f0180f91 FZ	108	/*
	109	* Always load the bios if it was enforced,
	110	* even if an external kernel has been defined.
	111	*/
	112	if (!ipl->kernel \|\| ipl->enforce_bios) {
d884c86d TH	113	uint64_t fwbase = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL;
d884c86d TH	114
e674a49a	115	if (bios_name == NULL) {
d0249ce5	116	bios_name = ipl->firmware;
e674a49a CB	117	}
	118
	119	bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
1f7de853	120	if (bios_filename == NULL) {
e6da780d	121	error_setg(&err, "could not find stage1 bootloader");
8f04e88e	122	goto error;
1f7de853 DD	123	}
1f7de853 DD	124
d884c86d TH	125	bios_size = load_elf(bios_filename, bios_translate_addr, &fwbase,
d884c86d TH	126	&ipl->bios_start_addr, NULL, NULL, 1,
7ef295ea	127	EM_S390, 0, 0);
d884c86d TH	128	if (bios_size > 0) {
	129	/* Adjust ELF start address to final location */
	130	ipl->bios_start_addr += fwbase;
	131	} else {
f35c1f66	132	/* Try to load non-ELF file */
33259956 AG	133	bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START,
33259956 AG	134	4096);
f0180f91	135	ipl->bios_start_addr = ZIPL_IMAGE_START;
33259956	136	}
e674a49a CB	137	g_free(bios_filename);
e674a49a CB	138
376827d4	139	if (bios_size == -1) {
e6da780d	140	error_setg(&err, "could not load bootloader '%s'", bios_name);
8f04e88e	141	goto error;
e674a49a	142	}
7691993c	143
f0180f91 FZ	144	/* default boot target is the bios */
f0180f91 FZ	145	ipl->start_addr = ipl->bios_start_addr;
e674a49a	146	}
7691993c	147
f0180f91 FZ	148	if (ipl->kernel) {
f0180f91 FZ	149	kernel_size = load_elf(ipl->kernel, NULL, NULL, &pentry, NULL,
7ef295ea	150	NULL, 1, EM_S390, 0, 0);
f0180f91 FZ	151	if (kernel_size < 0) {
	152	kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
	153	}
	154	if (kernel_size < 0) {
e6da780d	155	error_setg(&err, "could not load kernel '%s'", ipl->kernel);
8f04e88e	156	goto error;
e674a49a	157	}
f0180f91 FZ	158	/*
	159	* Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the
	160	* kernel parameters here as well. Note: For old kernels (up to 3.2)
	161	* we can not rely on the ELF entry point - it was 0x800 (the SALIPL
	162	* loader) and it won't work. For this case we force it to 0x10000, too.
	163	*/
	164	if (pentry == KERN_IMAGE_START \|\| pentry == 0x800) {
	165	ipl->start_addr = KERN_IMAGE_START;
	166	/* Overwrite parameters in the kernel image, which are "rom" */
	167	strcpy(rom_ptr(KERN_PARM_AREA), ipl->cmdline);
	168	} else {
	169	ipl->start_addr = pentry;
e674a49a CB	170	}
e674a49a CB	171
f0180f91 FZ	172	if (ipl->initrd) {
	173	ram_addr_t initrd_offset;
	174	int initrd_size;
	175
	176	initrd_offset = INITRD_START;
	177	while (kernel_size + 0x100000 > initrd_offset) {
	178	initrd_offset += 0x100000;
	179	}
	180	initrd_size = load_image_targphys(ipl->initrd, initrd_offset,
	181	ram_size - initrd_offset);
	182	if (initrd_size == -1) {
e6da780d	183	error_setg(&err, "could not load initrd '%s'", ipl->initrd);
8f04e88e	184	goto error;
f0180f91	185	}
e674a49a	186
f0180f91 FZ	187	/*
	188	* we have to overwrite values in the kernel image,
	189	* which are "rom"
	190	*/
	191	stq_p(rom_ptr(INITRD_PARM_START), initrd_offset);
	192	stq_p(rom_ptr(INITRD_PARM_SIZE), initrd_size);
	193	}
	194	}
bb099546 DH	195	/*
	196	* Don't ever use the migrated values, they could come from a different
	197	* BIOS and therefore don't work. But still migrate the values, so
	198	* QEMUs relying on it don't break.
	199	*/
	200	ipl->compat_start_addr = ipl->start_addr;
	201	ipl->compat_bios_start_addr = ipl->bios_start_addr;
04fccf10	202	qemu_register_reset(qdev_reset_all_fn, dev);
8f04e88e	203	error:
e6da780d	204	error_propagate(errp, err);
e674a49a CB	205	}
	206
	207	static Property s390_ipl_properties[] = {
	208	DEFINE_PROP_STRING("kernel", S390IPLState, kernel),
	209	DEFINE_PROP_STRING("initrd", S390IPLState, initrd),
	210	DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline),
d0249ce5	211	DEFINE_PROP_STRING("firmware", S390IPLState, firmware),
f0180f91	212	DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false),
04ca4b92 AY	213	DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration,
04ca4b92 AY	214	true),
e674a49a CB	215	DEFINE_PROP_END_OF_LIST(),
	216	};
	217
010d45d2	218	static bool s390_gen_initial_iplb(S390IPLState *ipl)
df75a4e2 FZ	219	{
	220	DeviceState *dev_st;
	221
df75a4e2 FZ	222	dev_st = get_boot_device(0);
df75a4e2 FZ	223	if (dev_st) {
b804e8a6 JL	224	VirtioCcwDevice virtio_ccw_dev = (VirtioCcwDevice )
b804e8a6 JL	225	object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent),
df75a4e2	226	TYPE_VIRTIO_CCW_DEVICE);
e468b673 AY	227	SCSIDevice sd = (SCSIDevice ) object_dynamic_cast(OBJECT(dev_st),
e468b673 AY	228	TYPE_SCSI_DEVICE);
b804e8a6 JL	229	if (virtio_ccw_dev) {
	230	CcwDevice *ccw_dev = CCW_DEVICE(virtio_ccw_dev);
	231
6aed9589 AY	232	ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN);
	233	ipl->iplb.blk0_len =
	234	cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN);
	235	ipl->iplb.pbt = S390_IPL_TYPE_CCW;
	236	ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno);
3041e3be	237	ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3;
010d45d2	238	return true;
e468b673 AY	239	} else if (sd) {
	240	SCSIBus *bus = scsi_bus_from_device(sd);
	241	VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus);
	242	VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, vdev);
b804e8a6	243	CcwDevice *ccw_dev = CCW_DEVICE(scsi_ccw);
e468b673 AY	244
	245	ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN);
	246	ipl->iplb.blk0_len =
	247	cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN);
	248	ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI;
	249	ipl->iplb.scsi.lun = cpu_to_be32(sd->lun);
	250	ipl->iplb.scsi.target = cpu_to_be16(sd->id);
	251	ipl->iplb.scsi.channel = cpu_to_be16(sd->channel);
b804e8a6 JL	252	ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno);
b804e8a6 JL	253	ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3;
e468b673	254	return true;
df75a4e2 FZ	255	}
	256	}
	257
010d45d2	258	return false;
df75a4e2 FZ	259	}
df75a4e2 FZ	260
feacc6c2	261	void s390_ipl_update_diag308(IplParameterBlock *iplb)
df75a4e2	262	{
feacc6c2	263	S390IPLState *ipl = get_ipl_device();
df75a4e2	264
feacc6c2 DH	265	ipl->iplb = *iplb;
feacc6c2 DH	266	ipl->iplb_valid = true;
df75a4e2 FZ	267	}
	268
	269	IplParameterBlock *s390_ipl_get_iplb(void)
	270	{
feacc6c2	271	S390IPLState *ipl = get_ipl_device();
df75a4e2	272
feacc6c2	273	if (!ipl->iplb_valid) {
df75a4e2 FZ	274	return NULL;
	275	}
	276	return &ipl->iplb;
	277	}
	278
e91e972c FZ	279	void s390_reipl_request(void)
e91e972c FZ	280	{
feacc6c2	281	S390IPLState *ipl = get_ipl_device();
e91e972c	282
e91e972c FZ	283	ipl->reipl_requested = true;
	284	qemu_system_reset_request();
	285	}
	286
db3b2566 DH	287	void s390_ipl_prepare_cpu(S390CPU *cpu)
	288	{
	289	S390IPLState *ipl = get_ipl_device();
	290
	291	cpu->env.psw.addr = ipl->start_addr;
	292	cpu->env.psw.mask = IPL_PSW_MASK;
	293
	294	if (!ipl->kernel \|\| ipl->iplb_valid) {
	295	cpu->env.psw.addr = ipl->bios_start_addr;
010d45d2 AY	296	if (!ipl->iplb_valid) {
	297	ipl->iplb_valid = s390_gen_initial_iplb(ipl);
	298	}
db3b2566 DH	299	}
	300	}
	301
e674a49a CB	302	static void s390_ipl_reset(DeviceState *dev)
	303	{
	304	S390IPLState *ipl = S390_IPL(dev);
ba1509c0	305
e91e972c FZ	306	if (!ipl->reipl_requested) {
e91e972c FZ	307	ipl->iplb_valid = false;
6aed9589	308	memset(&ipl->iplb, 0, sizeof(IplParameterBlock));
e91e972c FZ	309	}
e91e972c FZ	310	ipl->reipl_requested = false;
e674a49a CB	311	}
	312
	313	static void s390_ipl_class_init(ObjectClass klass, void data)
	314	{
	315	DeviceClass *dc = DEVICE_CLASS(klass);
e674a49a	316
04fccf10	317	dc->realize = s390_ipl_realize;
e674a49a CB	318	dc->props = s390_ipl_properties;
e674a49a CB	319	dc->reset = s390_ipl_reset;
2e13fbe4	320	dc->vmsd = &vmstate_ipl;
b4ab4572	321	set_bit(DEVICE_CATEGORY_MISC, dc->categories);
e674a49a CB	322	}
e674a49a CB	323
49973ebc	324	static const TypeInfo s390_ipl_info = {
e674a49a	325	.class_init = s390_ipl_class_init,
04fccf10 DH	326	.parent = TYPE_DEVICE,
04fccf10 DH	327	.name = TYPE_S390_IPL,
e674a49a CB	328	.instance_size = sizeof(S390IPLState),
	329	};
	330
	331	static void s390_ipl_register_types(void)
	332	{
	333	type_register_static(&s390_ipl_info);
	334	}
	335
	336	type_init(s390_ipl_register_types)