void
platform_probe_and_attach(void)
{
platform_def_t **platpp, *platp;
int prio, best_prio;
plat_obj = &plat_kernel_obj;
best_prio = 0;
/*
* We are unable to use TUNABLE_STR as the read will happen
* well after this function has returned.
*/
TUNABLE_STR_FETCH("hw.platform", plat_name, sizeof(plat_name));
/*
* Try to locate the best platform kobj
*/
SET_FOREACH(platpp, platform_set) {
platp = *platpp;
/*
* Take care of compiling the selected class, and
* then statically initialise the MMU object
*/
kobj_class_compile_static((kobj_class_t)platp,
&plat_kernel_kops);
kobj_init_static((kobj_t)plat_obj, (kobj_class_t)platp);
plat_obj->cls = platp;
prio = PLATFORM_PROBE(plat_obj);
/* Check for errors */
if (prio > 0)
continue;
/*
* Check if this module was specifically requested through
* the loader tunable we provide.
*/
if (strcmp(platp->name,plat_name) == 0) {
plat_def_impl = platp;
break;
}
/* Otherwise, see if it is better than our current best */
if (plat_def_impl == NULL || prio > best_prio) {
best_prio = prio;
plat_def_impl = platp;
}
/*
* We can't free the KOBJ, since it is static. Reset the ops
* member of this class so that we can come back later.
*/
platp->ops = NULL;
}
/*
* Routines used in machine-dependent code
*/
void
pmap_bootstrap(vm_offset_t start, vm_offset_t end)
{
mmu_obj = &mmu_kernel_obj;
/*
* Take care of compiling the selected class, and
* then statically initialise the MMU object
*/
kobj_class_compile_static(mmu_def_impl, &mmu_kernel_kops);
kobj_init_static((kobj_t)mmu_obj, mmu_def_impl);
MMU_BOOTSTRAP(mmu_obj, start, end);
}
/**
* Perform static initialization of aa device enumeration table parser using
* the provided bus space tag and handle.
*
* This may be used to initialize a caller-allocated erom instance state
* during early boot, prior to malloc availability.
*
* @param cls The parser class for which an instance will be
* allocated.
* @param erom The erom parser instance to initialize.
* @param esize The total available number of bytes allocated for
* @p erom. If this is less than is required by @p cls,
* ENOMEM will be returned.
* @param cid The device's chip identifier.
* @param bst Bus space tag.
* @param bsh Bus space handle mapping the device enumeration
* space.
*
* @retval 0 success
* @retval ENOMEM if @p esize is smaller than required by @p cls.
* @retval non-zero if an error occurs initializing the EROM parser,
* a regular unix error code will be returned.
*/
int
bhnd_erom_init_static(bhnd_erom_class_t *cls, bhnd_erom_t *erom, size_t esize,
const struct bhnd_chipid *cid, bus_space_tag_t bst, bus_space_handle_t bsh)
{
kobj_class_t kcls;
kcls = (kobj_class_t)cls;
/* Verify allocation size */
if (kcls->size > esize)
return (ENOMEM);
/* Perform instance initialization */
kobj_init_static((kobj_t)erom, kcls);
return (BHND_EROM_INIT_STATIC(erom, cid, bst, bsh));
}
