Squash commits for public release

kernel/include/mem/pmm.h

@@ -0,0 +1,40 @@
+#ifndef _KERNEL_MEM_PMM_H
+#define _KERNEL_MEM_PMM_H
+
+#include <algo/bitmap.h>
+#include <libkern/types.h>
+#include <mem/boot.h>
+#include <platform/generic/pmm/settings.h>
+
+struct pmm_state {
+    size_t kernel_va_base;
+    size_t kernel_data_size; // Kernel + MAT size.
+
+    bitmap_t mat;
+    boot_args_t* boot_args;
+
+    size_t ram_size;
+    size_t ram_offset;
+
+    size_t max_blocks;
+    size_t used_blocks;
+};
+typedef struct pmm_state pmm_state_t;
+
+void pmm_setup(boot_args_t* boot_args);
+
+void* pmm_alloc(size_t size);
+void* pmm_alloc_aligned(size_t size, size_t alignment);
+int pmm_free(void* ptr, size_t size);
+
+size_t pmm_get_ram_size();
+size_t pmm_get_max_blocks();
+size_t pmm_get_used_blocks();
+size_t pmm_get_free_blocks();
+size_t pmm_get_block_size();
+size_t pmm_get_ram_in_kb();
+size_t pmm_get_free_space_in_kb();
+const pmm_state_t* pmm_get_state();
+const boot_args_t* boot_args();
+
+#endif // _KERNEL_MEM_PMM_H