ptos: bpal: Add memory map interface

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

service/ptos/head/ke/bpal.h

@@ -12,6 +12,34 @@
 #include <ptapi/status.h>
 #include <ptdef.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
  */
@@ -35,10 +63,12 @@ typedef struct {
  *
  * @KernelBase:     Represents the kernel load base
  * @Framebuffer:    Framebuffer information
+ * @MemEntryIdx:    Callback to get memory map entry by index
  */
 typedef struct {
     UPTR KernelBase;
     BPAL_FRAMEBUFFER Framebuffer;
+    PT_STATUS(*MemEntryIdx)(USIZE Idx, MEMMAP_ENTRY *Result);
 } BPAL_HANDLE;
 
 /*