Changeset 2686705 in mainline for kernel/arch/arm32/src/mm/frame.c

Timestamp:

2011-11-20T17:27:41Z (12 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

42f60375

Parents:

ad12b5ea

Message:

Use frame_adjust_zone_bounds() on arm32.

File:

• kernel/arch/arm32/src/mm/frame.c (modified) (3 diffs)

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

@@ -45 +45 @@
 uintptr_t last_frame = 0;
 
+static void frame_common_arch_init(bool low)
+{
+        uintptr_t base;
+        size_t size;
+
+        machine_get_memory_extents(&base, &size);
+        base = ALIGN_UP(base, FRAME_SIZE);
+        size = ALIGN_DOWN(size, FRAME_SIZE);
+        
+        if (!frame_adjust_zone_bounds(low, &base, &size))
+                return;
+
+        if (low) {
+                zone_create(ADDR2PFN(base), SIZE2FRAMES(size),
+                    BOOT_PAGE_TABLE_START_FRAME +
+                    BOOT_PAGE_TABLE_SIZE_IN_FRAMES,
+                    ZONE_AVAILABLE | ZONE_LOWMEM);
+        } else {
+                pfn_t conf = zone_external_conf_alloc(SIZE2FRAMES(size));
+
+                zone_create(ADDR2PFN(base), SIZE2FRAMES(size), conf,
+                    ZONE_AVAILABLE | ZONE_HIGHMEM);
+        }
+        
+}
+
 /** Create low memory zones. */
 void frame_low_arch_init(void)
 {
-        uintptr_t mem_start, mem_end, mem_size;
+        uintptr_t mem_start;
+        size_t mem_size;
 
         machine_get_memory_extents(&mem_start, &mem_size);
@@ -54 +81 @@
         last_frame = ALIGN_DOWN(mem_start + mem_size, FRAME_SIZE);
         
-        mem_start = ALIGN_UP(mem_start, FRAME_SIZE);
-        mem_end = min(ALIGN_DOWN(mem_start + mem_size, FRAME_SIZE),
-            config.identity_size);
+        frame_common_arch_init(true);
 
-        zone_create(ADDR2PFN(mem_start), SIZE2FRAMES(mem_end - mem_start),
-            BOOT_PAGE_TABLE_START_FRAME + BOOT_PAGE_TABLE_SIZE_IN_FRAMES,
-            ZONE_AVAILABLE | ZONE_LOWMEM);
-        
         /* blacklist boot page table */
         frame_mark_unavailable(BOOT_PAGE_TABLE_START_FRAME,
@@ -72 +93 @@
 void frame_high_arch_init(void)
 {
-        uintptr_t mem_start, mem_end, mem_size;
-        size_t frames;
-        uintptr_t conf;
-
-        machine_get_memory_extents(&mem_start, &mem_size);
-
-        mem_end = ALIGN_DOWN(mem_start + mem_size, FRAME_SIZE);
-        if (mem_end <= config.identity_size) {
-                /* There is no high memory to init. */
-                return;
-        }
-
-        frames = SIZE2FRAMES(mem_end - config.identity_size);
-        conf = zone_external_conf_alloc(frames);
-
-        zone_create(ADDR2PFN(config.identity_size), frames, conf,
-            ZONE_AVAILABLE | ZONE_HIGHMEM);
+        frame_common_arch_init(false);
 }