// Initialization happens in two phases.
// 1. main() calls kinit1() while still using entrypgdir to place just
// the pages mapped by entrypgdir on free list.
// 2. main() calls kinit2() with the rest of the physical pages
// after installing a full page table that maps them on all cores.
void
kinit1(void *vstart, void *vend)
{
initlock(&kmem.lock, "kmem");
kmem.use_lock = 0;
freerange(vstart, vend);
}
// Initialization happens in two phases.
// 1. main() calls kinit1() while still using entrypgdir to place just
// the pages mapped by entrypgdir on free list.
// 2. main() calls kinit2() with the rest of the physical pages
// after installing a full page table that maps them on all cores.
void
kinit1(void *vstart, void *vend)
{
initlock(&kmem.lock, "kmem");
kmem.use_lock = 0;
freerange(vstart, vend);
cprintf("+%x\n", kmem.freelist);
}
void
initmem1(void *start, void *end)
{
initlock(&kmem.lock);
kmem.freelist = 0;
// interrupts aren't set up yet, so we can't call lock/unlock
kmem.uselock = 0;
freerange(start, end);
}
void
kinit2(void *vstart, void *vend)
{
freerange(vstart, vend);
kmem.use_lock = 1;
}
void
initmem2(void *start, void *end)
{
freerange(start, end);
kmem.uselock = 1;
}
//-------------------------------------------------------------------------------------------------------------------
// kinit2() -- the late initialization for the memory structures. It will free all the remaining paged that are
// covered by the full paging tables available to all processors.
//-------------------------------------------------------------------------------------------------------------------
void kinit2(void *vstart, void *vend)
{
freerange(vstart, vend);
kmem.use_lock = 1; // now, we need to enforce locking
}
//-------------------------------------------------------------------------------------------------------------------
// kinit1() -- the early initialization of memory. It will free the pages that are initially mapped in the startup
// page table (with 1M pages).
//-------------------------------------------------------------------------------------------------------------------
void kinit1(void *vstart, void *vend)
{
initlock(&kmem.lock, "kmem");
kmem.use_lock = 0; // no need to use the lock yet
freerange(vstart, vend);
}
void kinit(void *vstart, void *vend)
{
freerange(vstart, vend);
}
