Changeset 142084b2 in mainline

Timestamp:

2010-07-27T16:37:33Z (14 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

9ded977

Parents:

af96dd57

Message:

safer way how to register memory zones, do not ignore zones with unknown flag, but register them simply as reserved
register ACPI NVS zones as firmware zones

File:

• kernel/arch/ia32/src/mm/frame.c (modified) (3 diffs)

kernel/arch/ia32/src/mm/frame.c

@@ -131 +131 @@
                         if (last_frame < ALIGN_UP(new_base + new_size, FRAME_SIZE))
                                 last_frame = ALIGN_UP(new_base + new_size, FRAME_SIZE);
-                }
-                
-                if (e820table[i].type == MEMMAP_MEMORY_RESERVED) {
+                } else if ((e820table[i].type == MEMMAP_MEMORY_ACPI) ||
+                    (e820table[i].type == MEMMAP_MEMORY_NVS)) {
+                        /* To be safe, make the firmware zone possibly larger */
+                        uint64_t new_base = ALIGN_DOWN(base, FRAME_SIZE);
+                        uint64_t new_size = ALIGN_UP(size + (base - new_base),
+                            FRAME_SIZE);
+                        
+                        zone_create(ADDR2PFN(new_base), SIZE2FRAMES(new_size), 0,
+                            ZONE_FIRMWARE);
+                } else {
                         /* To be safe, make the reserved zone possibly larger */
                         uint64_t new_base = ALIGN_DOWN(base, FRAME_SIZE);
@@ -141 +148 @@
                         zone_create(ADDR2PFN(new_base), SIZE2FRAMES(new_size), 0,
                             ZONE_RESERVED);
-                }
-                
-                if (e820table[i].type == MEMMAP_MEMORY_ACPI) {
-                        /* To be safe, make the firmware zone possibly larger */
-                        uint64_t new_base = ALIGN_DOWN(base, FRAME_SIZE);
-                        uint64_t new_size = ALIGN_UP(size + (base - new_base),
-                            FRAME_SIZE);
-                        
-                        zone_create(ADDR2PFN(new_base), SIZE2FRAMES(new_size), 0,
-                            ZONE_FIRMWARE);
                 }
         }
@@ -203 +200 @@
 #ifdef CONFIG_SMP
                 /* Reserve AP real mode bootstrap memory */
-                frame_mark_unavailable(AP_BOOT_OFFSET >> FRAME_WIDTH, 
+                frame_mark_unavailable(AP_BOOT_OFFSET >> FRAME_WIDTH,
                     (hardcoded_unmapped_ktext_size +
                     hardcoded_unmapped_kdata_size) >> FRAME_WIDTH);