PMM and liballoc port

kernel/mm/pmm.h

@@ -0,0 +1,31 @@
+#ifndef _KERNEL_MM_PMM_H
+#define _KERNEL_MM_PMM_H
+
+#include <libk/std.h>
+#include <libk/bm.h>
+#include <sync/spin_lock.h>
+#include <mm/types.h>
+
+#define PMM_ALLOC_ERR ((physaddr_t)-1)
+
+#define PMM_REGIONS_MAX 32
+
+#define PMM_REGION_ACTIVE     (1 << 0)
+
+struct pmm_region {
+  spin_lock_t lock;
+  struct bm bm;
+  physaddr_t membase;
+  size_t size;
+  uint32_t flags;
+};
+
+struct pmm {
+  struct pmm_region regions[PMM_REGIONS_MAX];
+};
+
+void pmm_init(void);
+physaddr_t pmm_alloc(size_t nblks);
+void pmm_free(physaddr_t p_addr, size_t nblks);
+
+#endif // _KERNEL_MM_PMM_H