Changeset f6297e0 in mainline for arch/ia32/src/mm/frame.c

Timestamp:

2005-09-03T15:45:14Z (20 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

ab08b42

Parents:

2f08a55d

Message:

proper way of initializing GDT during boot on IA-32, fixes the nasty hack
SMP might be still broken

File:

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

arch/ia32/src/mm/frame.c

@@ -31 +31 @@
 #include <mm/vm.h>
 #include <config.h>
+#include <arch/boot/boot.h>
 #include <arch/boot/memmap.h>
 
-#include <print.h>
+size_t hardcoded_unmapped_ktext_size = 0;
+size_t hardcoded_unmapped_kdata_size = 0;
 
 void frame_arch_init(void)
@@ -40 +42 @@
         
         if (config.cpu_active == 1) {
+                /* Reserve the NULL frame */
                 frame_not_free(0x0);
-
+                
+                /* Reserve well-known memory regions */
                 frame_region_not_free(0xa0000,0xff000);
                 frame_region_not_free(0xfec00000,0xffffffff);
                 
-                /* This is a nasty hack, which should be fixed soon */
-                frame_region_not_free(0x0, 0xfffff);
+                /* 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--) {