Changeset 84dd253 in mainline for arch/ia32/src/mm/frame.c

Timestamp:

2005-09-21T13:37:50Z (20 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

aed4eca

Parents:

fcacfb7

Message:

Physical memory management work.
New frame allocator.
Some architectures need to have bigger heap.

File:

• arch/ia32/src/mm/frame.c (modified) (2 diffs)

arch/ia32/src/mm/frame.c

@@ -33 +33 @@
 #include <arch/boot/boot.h>
 #include <arch/boot/memmap.h>
+#include <panic.h>
 
 size_t hardcoded_unmapped_ktext_size = 0;
@@ -39 +40 @@
 void frame_arch_init(void)
 {
+        zone_t *z;
         __u8 i;
         
         if (config.cpu_active == 1) {
-                /* Reserve the NULL frame */
-                frame_not_free(0x0);
+                for (i=e820counter;i>0;i--) {
+                        if (e820table[i-1].type==MEMMAP_MEMORY_AVAILABLE) {
+                                z = zone_create(e820table[i-1].base_address, e820table[i-1].size & ~(FRAME_SIZE-1), 0);
+                                if (!z) {
+                                        panic("Cannot allocate zone (%dB).\n", e820table[i-1].size & ~(FRAME_SIZE-1));
+                                }
+                                zone_attach(z);
+                        }
+                }
                 
-                /* Reserve well-known memory regions */
-                frame_region_not_free(0xa0000,0xff000);
-                frame_region_not_free(0xfec00000,0xffffffff);
-                
+                frame_not_free(0);
+
                 /* Reserve real mode bootstrap memory */
-                frame_region_not_free(BOOTSTRAP_OFFSET, BOOTSTRAP_OFFSET + hardcoded_unmapped_ktext_size + hardcoded_unmapped_kdata_size);
-                
-                for (i=e820counter;i>0;i--) {
-                        if (e820table[i-1].type!=MEMMAP_MEMORY_AVAILABLE) {
-                                        frame_region_not_free(e820table[i-1].base_address, e820table[i-1].base_address+e820table[i-1].size);
-                                }
-                        }
+                frame_region_not_free(BOOTSTRAP_OFFSET, BOOTSTRAP_OFFSET + hardcoded_unmapped_ktext_size + hardcoded_unmapped_kdata_size);
         }
 }