static caddr_t
xen_pv_parse_preload_data(u_int64_t modulep)
{
caddr_t kmdp;
vm_ooffset_t off;
vm_paddr_t metadata;
if (HYPERVISOR_start_info->mod_start != 0) {
preload_metadata = (caddr_t)(HYPERVISOR_start_info->mod_start);
kmdp = preload_search_by_type("elf kernel");
if (kmdp == NULL)
kmdp = preload_search_by_type("elf64 kernel");
KASSERT(kmdp != NULL, ("unable to find kernel"));
/*
* Xen has relocated the metadata and the modules,
* so we need to recalculate it's position. This is
* done by saving the original modulep address and
* then calculating the offset with mod_start,
* which contains the relocated modulep address.
*/
metadata = MD_FETCH(kmdp, MODINFOMD_MODULEP, vm_paddr_t);
off = HYPERVISOR_start_info->mod_start - metadata;
preload_bootstrap_relocate(off);
boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
kern_envp += off;
} else {
uintptr_t
powerpc_init(vm_offset_t fdt, vm_offset_t toc, vm_offset_t ofentry, void *mdp,
uint32_t mdp_cookie)
{
struct pcpu *pc;
struct cpuref bsp;
vm_offset_t startkernel, endkernel;
char *env;
bool ofw_bootargs = false;
#ifdef DDB
vm_offset_t ksym_start;
vm_offset_t ksym_end;
#endif
/* First guess at start/end kernel positions */
startkernel = __startkernel;
endkernel = __endkernel;
/*
* If the metadata pointer cookie is not set to the magic value,
* the number in mdp should be treated as nonsense.
*/
if (mdp_cookie != 0xfb5d104d)
mdp = NULL;
#if !defined(BOOKE)
/*
* On BOOKE the BSS is already cleared and some variables
* initialized. Do not wipe them out.
*/
bzero(__sbss_start, __sbss_end - __sbss_start);
bzero(__bss_start, _end - __bss_start);
#endif
cpu_feature_setup();
#ifdef AIM
aim_early_init(fdt, toc, ofentry, mdp, mdp_cookie);
#endif
/*
* Parse metadata if present and fetch parameters. Must be done
* before console is inited so cninit gets the right value of
* boothowto.
*/
if (mdp != NULL) {
void *kmdp = NULL;
char *envp = NULL;
uintptr_t md_offset = 0;
vm_paddr_t kernelendphys;
#ifdef AIM
if ((uintptr_t)&powerpc_init > DMAP_BASE_ADDRESS)
md_offset = DMAP_BASE_ADDRESS;
#else /* BOOKE */
md_offset = VM_MIN_KERNEL_ADDRESS - kernload;
#endif
preload_metadata = mdp;
if (md_offset > 0) {
preload_metadata += md_offset;
preload_bootstrap_relocate(md_offset);
}
kmdp = preload_search_by_type("elf kernel");
if (kmdp != NULL) {
boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
if (envp != NULL)
envp += md_offset;
init_static_kenv(envp, 0);
if (fdt == 0) {
fdt = MD_FETCH(kmdp, MODINFOMD_DTBP, uintptr_t);
if (fdt != 0)
fdt += md_offset;
}
kernelendphys = MD_FETCH(kmdp, MODINFOMD_KERNEND,
vm_offset_t);
if (kernelendphys != 0)
kernelendphys += md_offset;
endkernel = ulmax(endkernel, kernelendphys);
#ifdef DDB
ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t);
ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t);
db_fetch_ksymtab(ksym_start, ksym_end);
#endif
}