*
*/
+#include "qemu/osdep.h"
#include "sysemu/sysemu.h"
#include "cpu.h"
#include "elf.h"
#include "hw/loader.h"
-#include "hw/sysbus.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 ZIPL_IMAGE_START 0x009000UL
#define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64)
-#define TYPE_S390_IPL "s390-ipl"
-#define S390_IPL(obj) \
- OBJECT_CHECK(S390IPLState, (obj), TYPE_S390_IPL)
-#if 0
-#define S390_IPL_CLASS(klass) \
- OBJECT_CLASS_CHECK(S390IPLState, (klass), TYPE_S390_IPL)
-#define S390_IPL_GET_CLASS(obj) \
- OBJECT_GET_CLASS(S390IPLState, (obj), TYPE_S390_IPL)
-#endif
-
-typedef struct S390IPLClass {
- /*< private >*/
- SysBusDeviceClass parent_class;
- /*< public >*/
-
- void (*parent_reset) (SysBusDevice *dev);
-} S390IPLClass;
-
-typedef struct S390IPLState {
- /*< private >*/
- SysBusDevice parent_obj;
- uint64_t start_addr;
-
- /*< public >*/
- char *kernel;
- char *initrd;
- char *cmdline;
- char *firmware;
-} S390IPLState;
-
-
-static int s390_ipl_init(SysBusDevice *dev)
+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()
+ }
+};
+
+static const VMStateDescription vmstate_ipl = {
+ .name = "ipl",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT64(start_addr, S390IPLState),
+ VMSTATE_UINT64(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;
- if (!ipl->kernel) {
- int bios_size;
- char *bios_filename;
+ 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;
- /* Load zipl bootloader */
if (bios_name == NULL) {
bios_name = ipl->firmware;
}
bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
if (bios_filename == NULL) {
- hw_error("could not find stage1 bootloader\n");
+ error_setg(&err, "could not find stage1 bootloader");
+ goto error;
}
- bios_size = load_elf(bios_filename, NULL, NULL, &ipl->start_addr, NULL,
- NULL, 1, ELF_MACHINE, 0);
- if (bios_size == -1) {
+ 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 (e.g. s390-ccw.img) */
bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START,
4096);
- ipl->start_addr = ZIPL_IMAGE_START;
- if (bios_size > 4096) {
- hw_error("stage1 bootloader is > 4k\n");
- }
+ ipl->bios_start_addr = ZIPL_IMAGE_START;
}
g_free(bios_filename);
if (bios_size == -1) {
- hw_error("could not load bootloader '%s'\n", bios_name);
+ error_setg(&err, "could not load bootloader '%s'", bios_name);
+ goto error;
}
- return 0;
- } else {
- kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, NULL,
- NULL, 1, ELF_MACHINE, 0);
- if (kernel_size == -1) {
+
+ /* 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 == -1) {
- fprintf(stderr, "could not load kernel '%s'\n", ipl->kernel);
- return -1;
+ if (kernel_size < 0) {
+ error_setg(&err, "could not load kernel '%s'", ipl->kernel);
+ goto error;
}
- /* we have to overwrite values in the kernel image, which are "rom" */
- strcpy(rom_ptr(KERN_PARM_AREA), ipl->cmdline);
-
/*
- * we can not rely on the ELF entry point, since up to 3.2 this
- * value was 0x800 (the SALIPL loader) and it wont work. For
- * all (Linux) cases 0x10000 (KERN_IMAGE_START) should be fine.
+ * 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.
*/
- ipl->start_addr = KERN_IMAGE_START;
- }
- 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) {
- fprintf(stderr, "qemu: could not load initrd '%s'\n", ipl->initrd);
- exit(1);
+ 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;
}
- /* 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);
- }
+ 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;
+ }
- return 0;
+ /*
+ * 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);
+ }
+ }
+ qemu_register_reset(qdev_reset_all_fn, dev);
+error:
+ error_propagate(errp, err);
}
static Property s390_ipl_properties[] = {
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_END_OF_LIST(),
};
-static void s390_ipl_reset(DeviceState *dev)
+/*
+ * In addition to updating the iplstate, this function returns:
+ * - 0 if system was ipled with external kernel
+ * - -1 if no valid boot device was found
+ * - ccw id of the boot device otherwise
+ */
+static uint64_t s390_update_iplstate(S390IPLState *ipl)
{
- S390IPLState *ipl = S390_IPL(dev);
- S390CPU *cpu = S390_CPU(qemu_get_cpu(0));
- CPUS390XState *env = &cpu->env;
-
- env->psw.addr = ipl->start_addr;
- env->psw.mask = IPL_PSW_MASK;
-
- if (!ipl->kernel) {
- /* Tell firmware, if there is a preferred boot device */
- env->regs[7] = -1;
- DeviceState *dev_st = get_boot_device(0);
- if (dev_st) {
- VirtioCcwDevice *ccw_dev = (VirtioCcwDevice *) object_dynamic_cast(
- OBJECT(qdev_get_parent_bus(dev_st)->parent),
- TYPE_VIRTIO_CCW_DEVICE);
+ DeviceState *dev_st;
- if (ccw_dev) {
- env->regs[7] = ccw_dev->sch->cssid << 24 |
- ccw_dev->sch->ssid << 16 |
- ccw_dev->sch->devno;
- }
+ if (ipl->iplb_valid) {
+ ipl->cssid = 0;
+ ipl->ssid = 0;
+ ipl->devno = ipl->iplb.devno;
+ goto out;
+ }
+
+ if (ipl->kernel) {
+ return 0;
+ }
+
+ dev_st = get_boot_device(0);
+ if (dev_st) {
+ VirtioCcwDevice *ccw_dev = (VirtioCcwDevice *) object_dynamic_cast(
+ OBJECT(qdev_get_parent_bus(dev_st)->parent),
+ TYPE_VIRTIO_CCW_DEVICE);
+ if (ccw_dev) {
+ ipl->cssid = ccw_dev->sch->cssid;
+ ipl->ssid = ccw_dev->sch->ssid;
+ ipl->devno = ccw_dev->sch->devno;
+ goto out;
}
}
- s390_add_running_cpu(cpu);
+ return -1;
+out:
+ return (uint32_t) (ipl->cssid << 24 | ipl->ssid << 16 | ipl->devno);
+}
+
+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;
+ cpu->env.regs[7] = s390_update_iplstate(ipl);
+ }
+}
+
+static void s390_ipl_reset(DeviceState *dev)
+{
+ S390IPLState *ipl = S390_IPL(dev);
+
+ if (!ipl->reipl_requested) {
+ ipl->iplb_valid = false;
+ }
+ ipl->reipl_requested = false;
}
static void s390_ipl_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
- k->init = s390_ipl_init;
+ 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_SYS_BUS_DEVICE,
- .name = "s390-ipl",
+ .parent = TYPE_DEVICE,
+ .name = TYPE_S390_IPL,
.instance_size = sizeof(S390IPLState),
};
projects / qemu.git / blobdiff