Changeset ae318d3 in mainline for kernel/arch/arm32/src/mm

Timestamp:

2009-02-16T18:50:48Z (17 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

06da55b

Parents:

17f168e

Message:

overhaul pareas: use one single physical area for the physical address space not belonging to physical memory

Location:

kernel/arch/arm32/src/mm

Files:

• frame.c (modified) (2 diffs)
• page.c (modified) (1 diff)

kernel/arch/arm32/src/mm/frame.c

@@ -42 +42 @@
 /** Address of the last frame in the memory. */
 uintptr_t last_frame = 0;
+uintptr_t end_frame = 0;
 
 /** Creates memory zones. */
@@ -50 +51 @@
             BOOT_PAGE_TABLE_START_FRAME + BOOT_PAGE_TABLE_SIZE_IN_FRAMES, 0);
         last_frame = machine_get_memory_size();
-
+        end_frame = last_frame;
+        
         /* blacklist boot page table */
         frame_mark_unavailable(BOOT_PAGE_TABLE_START_FRAME,

kernel/arch/arm32/src/mm/page.c

@@ -107 +107 @@
 }
 
+void hw_area(uintptr_t *physaddr, pfn_t *frames)
+{
+        *physaddr = end_frame;
+        *frames = ADDR2PFN(0xffffffff - end_frame);
+}
+
 /** @}
  */