diff options
Diffstat (limited to 'qemu/hw/s390x/ipl.c')
| -rw-r--r-- | qemu/hw/s390x/ipl.c | 298 |
1 files changed, 0 insertions, 298 deletions
diff --git a/qemu/hw/s390x/ipl.c b/qemu/hw/s390x/ipl.c deleted file mode 100644 index f10420027..000000000 --- a/qemu/hw/s390x/ipl.c +++ /dev/null @@ -1,298 +0,0 @@ -/* - * 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 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; - - 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 (e.g. s390-ccw.img) */ - 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); - } - } - 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_END_OF_LIST(), -}; - -/* - * 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) -{ - DeviceState *dev_st; - - 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; - } - } - - 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); - - 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) |