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S390: Make IPL reset address dynamic

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We can have different load addresses for different blobs we boot with.
Make the reset IP dynamic, so that we can handle things more flexibly.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2013-04-22 16:44:39 +02:00
parent bf9b255f48
commit 74ad2d22c1
1 changed files with 11 additions and 11 deletions
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22
hw/s390x/ipl.c
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@ -48,8 +48,9 @@ typedef struct S390IPLClass {
typedef struct S390IPLState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
uint64_t start_addr;
/*< public >*/
char *kernel;
char *initrd;
char *cmdline;
@ -82,6 +83,7 @@ static int s390_ipl_init(SysBusDevice *dev)
bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, 4096);
ipl->start_addr = ZIPL_IMAGE_START;
g_free(bios_filename);
if ((long)bios_size < 0) {
@ -104,6 +106,13 @@ static int s390_ipl_init(SysBusDevice *dev)
}
/* 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.
*/
ipl->start_addr = KERN_IMAGE_START;
}
if (ipl->initrd) {
ram_addr_t initrd_offset, initrd_size;
@ -138,16 +147,7 @@ static void s390_ipl_reset(DeviceState *dev)
{
S390IPLState *ipl = S390_IPL(dev);
if (ipl->kernel) {
/*
* 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);
} else {
return s390_ipl_cpu(ZIPL_IMAGE_START);
}
s390_ipl_cpu(ipl->start_addr);
}
static void s390_ipl_class_init(ObjectClass *klass, void *data)