Changeset e5c1186 in mainline for kernel/arch/ia64/src/start.S

Timestamp:

2010-06-14T22:58:20Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

fae1647

Parents:

84d8837

Message:

Remove the poor man's support for SMP.

Proper SMP support will be reintroduced later after the rest of the ia64 code is
cleaned up and the real hardware support is back.

File:

• kernel/arch/ia64/src/start.S (modified) (4 diffs)

kernel/arch/ia64/src/start.S

@@ -49 +49 @@
 kernel_image_start:
         .auto
-        
-#ifdef CONFIG_SMP
-        # Identify self(CPU) in OS structures by ID / EID
-        
-        mov r9 = cr64
-        mov r10 = 1
-        movl r12 = 0xffffffff
-        movl r8 = cpu_by_id_eid_list
-        and r8 = r8, r12
-        shr r9 = r9, 16
-        add r8 = r8, r9
-        st1 [r8] = r10
-#endif
         
         mov psr.l = r0
@@ -164 +151 @@
         bsw.1
         
-#ifdef CONFIG_SMP
-        # Am I BSP or AP?
-        movl r20 = bsp_started ;;
-        ld8 r20 = [r20] ;;
-        cmp.eq p3, p2 = r20, r0 ;;
-#else
-        cmp.eq p3, p2 = r0, r0 ;;  /* you are BSP */
-#endif  /* CONFIG_SMP */
-        
         # Initialize register stack
         mov ar.rsc = r0
@@ -191 +169 @@
          * Initialize bootinfo on BSP.
          */
-(p3)    addl r21 = @gprel(bootinfo), gp ;;
-(p3)    st8 [r21] = r20
+        addl r21 = @gprel(bootinfo), gp ;;
+        st8 [r21] = r20
         
         ssm (1 << 19) ;; /* Disable f32 - f127 */
         srlz.i
         srlz.d ;;
-        
-#ifdef CONFIG_SMP
-(p2)    movl r18 = main_ap ;;
-(p2)    mov b1 = r18 ;;
-(p2)    br.call.sptk.many b0 = b1
-        
-        # Mark that BSP is on
-        
-        mov r20 = 1 ;;
-        movl r21 = bsp_started ;;
-        st8 [r21] = r20 ;;
-#endif
         
         br.call.sptk.many b0 = arch_pre_main
@@ -218 +184 @@
 0:
         br 0b
-
-#ifdef CONFIG_SMP
-
-.align 4096
-kernel_image_ap_start:
-        .auto
-        
-        # Identify self(CPU) in OS structures by ID / EID
-        
-        mov r9 = cr64
-        mov r10 = 1
-        movl r12 = 0xffffffff
-        movl r8 = cpu_by_id_eid_list
-        and r8 = r8, r12
-        shr r9 = r9, 16
-        add r8 = r8, r9
-        st1 [r8] = r10
-        
-        # Wait for wakeup synchro signal (#3 in cpu_by_id_eid_list)
-
-kernel_image_ap_start_loop:
-        movl r11 = kernel_image_ap_start_loop
-        and r11 = r11, r12
-        mov b1 = r11
-        
-        ld1 r20 = [r8]
-        movl r21 = 3
-        cmp.eq p2, p3 = r20, r21
-(p3)    br.call.sptk.many b0 = b1
-        
-        movl r11 = kernel_image_start
-        and r11 = r11, r12
-        mov b1 = r11
-        br.call.sptk.many b0 = b1
-
-.align 16
-.global bsp_started
-bsp_started:
-        .space 8
-
-.align 4096
-.global cpu_by_id_eid_list
-cpu_by_id_eid_list:
-        .space 65536
-
-#endif  /* CONFIG_SMP */