Changeset 7208b6c in mainline for kernel/arch/ia64/src/start.S

Timestamp:

2008-02-09T10:31:11Z (16 years ago)

Author:

Jakub Vana <jakub.vana@…>

Branches:

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

Children:

a4884c70

Parents:

71eef11

Message:

Basic IA64 boot and kernel suport for real machines

File:

• kernel/arch/ia64/src/start.S (modified) (2 diffs)

kernel/arch/ia64/src/start.S

@@ -36 +36 @@
 #define PS_SHIFT 2
 
-#define KERNEL_TRANSLATION_I 0x0010000000000661
-#define KERNEL_TRANSLATION_D 0x0010000000000661
+#define KERNEL_TRANSLATION_I  0x0010000000000661
+#define KERNEL_TRANSLATION_D  0x0010000000000661
+#define KERNEL_TRANSLATION_VIO 0x0010000000000671
+#define KERNEL_TRANSLATION_IO 0x00100FFFFC000671 
+#define VIO_OFFSET            0x0002000000000000
+
+#define IO_OFFSET             0x0001000000000000
+
+
 
 .section K_TEXT_START, "ax"
@@ -47 +54 @@
         .auto
 
+        mov psr.l = r0
+        srlz.i
+        srlz.d
+
         # Fill TR.i and TR.d using Region Register #VRN_KERNEL
+
 
         movl r8 = (VRN_KERNEL << VRN_SHIFT)
         mov r9 = rr[r8]
+
+
         movl r10 = (RR_MASK)
         and r9 = r10, r9
         movl r10 = ((RID_KERNEL << RID_SHIFT) | (KERNEL_PAGE_WIDTH << PS_SHIFT))
         or  r9 = r10, r9
+
+
         mov rr[r8] = r9
+
+
 
         movl r8 = (VRN_KERNEL << VRN_SHIFT)
         mov cr.ifa = r8
-        movl r10 = (KERNEL_PAGE_WIDTH << PS_SHIFT)
-        mov cr.itir = r10
+
+        
+        mov r11 = cr.itir ;;
+        movl r10 = (KERNEL_PAGE_WIDTH << PS_SHIFT);;
+        or r10 =r10 , r11  ;;
+        mov cr.itir = r10;;
+
+        
         movl r10 = (KERNEL_TRANSLATION_I)
         itr.i itr[r0] = r10
+
+        
         movl r10 = (KERNEL_TRANSLATION_D)
         itr.d dtr[r0] = r10
 
+
+        movl r7 = 1
+        movl r8 = (VRN_KERNEL << VRN_SHIFT) | VIO_OFFSET
+        mov cr.ifa = r8
+        movl r10 = (KERNEL_TRANSLATION_VIO)
+        itr.d dtr[r7] = r10
+
+
+        mov r11 = cr.itir ;;
+        movl r10 = ~0xfc;;
+        and r10 =r10 , r11  ;;
+        movl r11 = (IO_PAGE_WIDTH << PS_SHIFT);;
+        or r10 =r10 , r11  ;;
+        mov cr.itir = r10;;
+
+
+        movl r7 = 2
+        movl r8 = (VRN_KERNEL << VRN_SHIFT) | IO_OFFSET
+        mov cr.ifa = r8
+        movl r10 = (KERNEL_TRANSLATION_IO)
+        itr.d dtr[r7] = r10
+
+
+
+
         # initialize PSR
-        mov psr.l = r0
-        srlz.i
-        srlz.d
         movl r10 = (PSR_DT_MASK | PSR_RT_MASK | PSR_IT_MASK | PSR_IC_MASK)  /* Enable paging */
         mov r9 = psr