Merge master.kernel.org:/home/rmk/linux-2.6-arm

1 files changed, 25 insertions, 1 deletions

diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
index 9bb5fff406fb..92f3ca31b7b9 100644
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -12,6 +12,7 @@
 #include <linux/linkage.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
+#include <asm/hardware/arm_scu.h>
 #include <asm/procinfo.h>
 #include <asm/pgtable.h>
 
@@ -112,6 +113,9 @@ ENTRY(cpu_v6_dcache_clean_area)
 ENTRY(cpu_v6_switch_mm)
         mov     r2, #0
         ldr     r1, [r1, #MM_CONTEXT_ID]        @ get mm->context.id
+#ifdef CONFIG_SMP
+        orr     r0, r0, #2                      @ set shared pgtable
+#endif
         mcr     p15, 0, r2, c7, c5, 6           @ flush BTAC/BTB
         mcr     p15, 0, r2, c7, c10, 4          @ drain write buffer
         mcr     p15, 0, r0, c2, c0, 0           @ set TTB 0
@@ -140,7 +144,7 @@ ENTRY(cpu_v6_switch_mm)
 ENTRY(cpu_v6_set_pte)
         str     r1, [r0], #-2048                @ linux version
 
-        bic     r2, r1, #0x000007f0
+        bic     r2, r1, #0x000003f0
         bic     r2, r2, #0x00000003
         orr     r2, r2, #PTE_EXT_AP0 | 2
 
@@ -191,6 +195,23 @@ cpu_v6_name:
  *      - cache type register is implemented
  */
 __v6_setup:
+#ifdef CONFIG_SMP
+        /* Set up the SCU on core 0 only */
+        mrc     p15, 0, r0, c0, c0, 5           @ CPU core number
+        ands    r0, r0, #15
+        moveq   r0, #0x10000000 @ SCU_BASE
+        orreq   r0, r0, #0x00100000
+        ldreq   r5, [r0, #SCU_CTRL]
+        orreq   r5, r5, #1
+        streq   r5, [r0, #SCU_CTRL]
+
+#ifndef CONFIG_CPU_DCACHE_DISABLE
+        mrc     p15, 0, r0, c1, c0, 1           @ Enable SMP/nAMP mode
+        orr     r0, r0, #0x20
+        mcr     p15, 0, r0, c1, c0, 1
+#endif
+#endif
+
         mov     r0, #0
         mcr     p15, 0, r0, c7, c14, 0          @ clean+invalidate D cache
         mcr     p15, 0, r0, c7, c5, 0           @ invalidate I cache
@@ -198,6 +219,9 @@ __v6_setup:
         mcr     p15, 0, r0, c7, c10, 4          @ drain write buffer
         mcr     p15, 0, r0, c8, c7, 0           @ invalidate I + D TLBs
         mcr     p15, 0, r0, c2, c0, 2           @ TTB control register
+#ifdef CONFIG_SMP
+        orr     r4, r4, #2                      @ set shared pgtable
+#endif
         mcr     p15, 0, r4, c2, c0, 1           @ load TTB1
 #ifdef CONFIG_VFP
         mrc     p15, 0, r0, c1, c0, 2