From: Christian Borntraeger <borntrae...@de.ibm.com> Lets move the code to setup IPL for external kernel or via the zipl rom into a separate file. This allows to
- define a reboot handler, setting up the PSW appropriately - enhance the boot code to IPL disks that contain a bootmap that was created with zipl under LPAR or z/VM (see additional patch) and thus disabling the bios code that only works for specifically prepared disks. - reuse that code for several machines (e.g. virtio-ccw and virtio-s390) Signed-off-by: Christian Borntraeger <borntrae...@de.ibm.com> Signed-off-by: Jens Freimann <jf...@linux.vnet.ibm.com> --- hw/s390-virtio.c | 30 ++--------------- hw/s390x/Makefile.objs | 1 + hw/s390x/ipl.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++ hw/s390x/ipl.h | 34 ++++++++++++++++++++ 4 files changed, 119 insertions(+), 26 deletions(-) create mode 100644 hw/s390x/ipl.c create mode 100644 hw/s390x/ipl.h diff --git a/hw/s390-virtio.c b/hw/s390-virtio.c index d77871a..10a5fd7 100644 --- a/hw/s390-virtio.c +++ b/hw/s390-virtio.c @@ -33,6 +33,7 @@ #include "hw/s390-virtio-bus.h" #include "hw/s390x/sclp.h" +#include "hw/s390x/ipl.h" //#define DEBUG_S390 @@ -48,17 +49,6 @@ #define KVM_S390_VIRTIO_RESET 1 #define KVM_S390_VIRTIO_SET_STATUS 2 -#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_START 0x009000UL -#define ZIPL_LOAD_ADDR 0x009000UL -#define ZIPL_FILENAME "s390-zipl.rom" - #define MAX_BLK_DEVS 10 static VirtIOS390Bus *s390_bus; @@ -185,6 +175,7 @@ static void s390_init(QEMUMachineInitArgs *args) /* get a BUS */ s390_bus = s390_virtio_bus_init(&my_ram_size); s390_sclp_init(); + s390_ipl_init(); /* allocate RAM */ memory_region_init_ram(ram, "s390.ram", my_ram_size); @@ -225,11 +216,7 @@ static void s390_init(QEMUMachineInitArgs *args) tmp_env->storage_keys = storage_keys; } - /* One CPU has to run */ - s390_add_running_cpu(env); - if (kernel_filename) { - kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, NULL, NULL, 1, ELF_MACHINE, 0); if (kernel_size == -1UL) { @@ -240,13 +227,6 @@ static void s390_init(QEMUMachineInitArgs *args) kernel_filename); exit(1); } - /* - * 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. - */ - env->psw.addr = KERN_IMAGE_START; - env->psw.mask = 0x0000000180000000ULL; } else { ram_addr_t bios_size = 0; char *bios_filename; @@ -257,7 +237,7 @@ static void s390_init(QEMUMachineInitArgs *args) } bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); - bios_size = load_image_targphys(bios_filename, ZIPL_LOAD_ADDR, 4096); + bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, 4096); g_free(bios_filename); if ((long)bios_size < 0) { @@ -267,9 +247,6 @@ static void s390_init(QEMUMachineInitArgs *args) if (bios_size > 4096) { hw_error("stage1 bootloader is > 4k\n"); } - - env->psw.addr = ZIPL_START; - env->psw.mask = 0x0000000180000000ULL; } if (initrd_filename) { @@ -352,3 +329,4 @@ static void s390_machine_init(void) } machine_init(s390_machine_init); + diff --git a/hw/s390x/Makefile.objs b/hw/s390x/Makefile.objs index 096dfcd..4a5a5d8 100644 --- a/hw/s390x/Makefile.objs +++ b/hw/s390x/Makefile.objs @@ -4,3 +4,4 @@ obj-y := $(addprefix ../,$(obj-y)) obj-y += sclp.o obj-y += event-facility.o obj-y += sclpquiesce.o sclpconsole.o +obj-y += ipl.o diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c new file mode 100644 index 0000000..1736fca --- /dev/null +++ b/hw/s390x/ipl.c @@ -0,0 +1,80 @@ +/* + * bootloader support + * + * Copyright IBM, Corp. 2012 + * + * Authors: + * Christian Borntraeger <borntrae...@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 <sysemu.h> +#include "cpu.h" +#include "hw/loader.h" +#include "hw/sysbus.h" +#include "hw/s390x/ipl.h" + +void s390_ipl_cpu(uint64_t pswaddr) +{ + CPUS390XState *env = qemu_get_cpu(0); + env->psw.addr = pswaddr; + env->psw.mask = IPL_PSW_MASK; + s390_add_running_cpu(env); +} + +static int s390_ipl_default_init(SysBusDevice *dev) +{ + return 0; +} + +static Property s390_ipl_properties[] = { + DEFINE_PROP_END_OF_LIST(), +}; + +static void s390_ipl_reset(DeviceState *dev) +{ + if (rom_ptr(KERN_IMAGE_START)) { + /* + * 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. + */ + return s390_ipl_cpu(KERN_IMAGE_START); + } + return s390_ipl_cpu(ZIPL_IMAGE_START); +} + +static void s390_ipl_default_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + + k->init = s390_ipl_default_init; + dc->props = s390_ipl_properties; + dc->reset = s390_ipl_reset; + dc->no_user = 1; +} + +static TypeInfo s390_ipl_default_info = { + .class_init = s390_ipl_default_class_init, + .parent = TYPE_SYS_BUS_DEVICE, + .name = "s390-ipl-default", +}; + +static void s390_register_ipl(void) +{ + type_register_static(&s390_ipl_default_info); +} + +type_init(s390_register_ipl) + +void s390_ipl_init(void) +{ + DeviceState *dev = qdev_create(NULL, "s390-ipl-default"); + qdev_init_nofail(dev); +} + + diff --git a/hw/s390x/ipl.h b/hw/s390x/ipl.h new file mode 100644 index 0000000..214abbc --- /dev/null +++ b/hw/s390x/ipl.h @@ -0,0 +1,34 @@ +/* + * ipl support + * + * Copyright IBM, Corp. 2012 + * + * Authors: + * Christian Borntraeger <borntrae...@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. + * + */ + + +#ifndef S390_IPL_H +#define S390_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_FILENAME "s390-zipl.rom" +#define ZIPL_IMAGE_START 0x009000UL +#define IPL_PSW_MASK 0x0000000180000000ULL + +/* starts the first cpu with the given address and a default psw mask */ +void s390_ipl_cpu(uint64_t pswaddr); + +/* Initialize the ipl code */ +void s390_ipl_init(void); + +#endif //S390_IPL_H -- 1.7.1