Changeset 6f878b7 in mainline for arch/amd64/src/pm.c

Timestamp:

2005-08-30T15:06:03Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

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

Children:

a9387ea

Parents:

1e9a463

Message:

AMD64 now can switch into long mode.
Basic page tables working.

File:

• arch/amd64/src/pm.c (modified) (4 diffs)

arch/amd64/src/pm.c

@@ -45 +45 @@
           .base_0_15   = 0, 
           .base_16_23  = 0, 
-          .access      = AR_PRESENT | AR_CODE | DPL_KERNEL, 
+          .access      = AR_PRESENT | AR_CODE | DPL_KERNEL | AR_READABLE , 
           .limit_16_19 = 0xf, 
           .available   = 0, 
           .longmode    = 1, 
-          .special     = 0, 
+          .special     = 0,
           .granularity = 1, 
           .base_24_31  = 0 },
@@ -61 +61 @@
           .longmode    = 0, 
           .special     = 0, 
-          .granularity = 0, 
+          .granularity = 1, 
           .base_24_31  = 0 },
         /* UTEXT descriptor */
@@ -85 +85 @@
           .granularity = 1, 
           .base_24_31  = 0 },
+        /* KTEXT 16-bit protected */
+        { .limit_0_15  = 0xffff, 
+          .base_0_15   = 0, 
+          .base_16_23  = 0, 
+          .access      = AR_PRESENT | AR_CODE | DPL_KERNEL | AR_READABLE, 
+          .limit_16_19 = 0xf, 
+          .available   = 0, 
+          .longmode    = 0, 
+          .special     = 0,
+          .granularity = 1, 
+          .base_24_31  = 0 },
         /* TSS descriptor - set up will be completed later */
         { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
@@ -93 +104 @@
 static struct tss tss;
 
-/* gdtr is changed by kmp before next CPU is initialized */
-struct ptr_16_32 gdtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(gdt) };
-//struct ptr_16_32 gdtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(gdt), .base = KA2PA((__address) gdt) };
-struct ptr_16_32 idtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(idt) };
+/* Does not compile correctly if it does not exist */
+int __attribute__ ((section ("K_DATA_START"))) __fake;