Added mm_record_mmap_entry() and calls to it in k_bootstrap().

git-svn-id: svn://anubis/hos/trunk@26 5b3e749e-e535-0410-8002-a9bb6afbdfca

kernel/mm/mm.c

@@ -1,4 +1,30 @@
 
 #include "mm.h"
+#include "boot/k_early_panic.h"
+
+#define MM_MAX_MMAP_ENTRIES 64
 
 pagedirectory_t page_directory __attribute__ ((aligned (4096)));
+
+static mm_mem_range_t mm_mmap_entries[MM_MAX_MMAP_ENTRIES];
+static int mm_mmap_num_entries = 0;
+
+/**************************************************************************
+ * This function is run in segmented memory before paging is in effect.   *
+ *************************************************************************/
+void mm_record_mmap_entry(mb_mmap_t * mmap)
+{
+    if (mm_mmap_num_entries < MM_MAX_MMAP_ENTRIES)
+    {
+        if (mmap->type == MB_MMAP_TYPE_RAM)
+        {
+            mm_mmap_entries[mm_mmap_num_entries].base   = mmap->base;
+            mm_mmap_entries[mm_mmap_num_entries].length = mmap->length;
+            mm_mmap_num_entries++;
+        }
+    }
+    else
+    {
+        k_early_panic("Too many mmap_entries!");
+    }
+}

kernel/mm/mm.h

@@ -4,6 +4,7 @@
 
 #include "hos_types.h"
 #include "hos_defines.h"
+#include "multiboot.h"
 
 typedef u32_t pagedirectory_entry_t;
 
@@ -12,5 +13,13 @@ typedef pagedirectory_entry_t
 
 extern pagedirectory_t page_directory;
 
+typedef struct
+{
+    u64_t   base;
+    u64_t   length;
+} mm_mem_range_t;
+
+void mm_record_mmap_entry(mb_mmap_t * mmap);
+
 #endif