stos: bpal: Add memory map callbacks

Signed-off-by: Chloe M. <chloe@mensia.org>

paw/stos/head/ke/bpal.h

@@ -9,8 +9,37 @@
 #ifndef _KE_BPAL_H_
 #define _KE_BPAL_H_ 1
 
+#include <stapi/status.h>
 #include <stdef.h>
 
+/*
+ * Valid memory types
+ */
+typedef enum {
+    MEMORY_USABLE,
+    MEMORY_RESERVED,
+    MEMORY_ACPI_RECLAIM,
+    MEMORY_ACPI_NVS,
+    MEMORY_BAD,
+    MEMORY_BOOTLOADER,
+    MEMORY_KERNEL,
+    MEMORY_FRAMEBUFFER,
+    MEMORY_ACPI_TABLES
+} MEM_TYPE;
+
+/*
+ * Memory map entry
+ *
+ * @Base:   Entry base
+ * @Length: Entry length
+ * @Type:   Entry type
+ */
+typedef struct {
+    UQUAD Base;
+    UQUAD Length;
+    UQUAD Type;
+} MEMMAP_ENTRY;
+
 /*
  * Represents a framebuffer
  */
@@ -33,10 +62,12 @@ typedef struct {
  *
  * @KernelBase:     Kernel load base
  * @Framebuffer:    Framebuffer info
+ * @MemEntryIdx:    Callback to get memory map entry by index
  */
 typedef struct {
     UPTR KernelBase;
     BPAL_FRAMEBUFFER Framebuffer;
+    ST_STATUS(*MemEntryIdx)(USIZE Idx, MEMMAP_ENTRY *Result);
 } BPAL_HANDLE;
 
 /*