7 files changed, 103 insertions, 23 deletions

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 20979564e7ee..83c025e72ceb 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -391,7 +391,7 @@ config CPU_FEROCEON_OLD_ID
 
 # ARMv6
 config CPU_V6
-        bool "Support ARM V6 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB
+        bool "Support ARM V6 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX
         select CPU_32v6
         select CPU_ABRT_EV6
         select CPU_PABRT_NOIFAR
@@ -416,7 +416,7 @@ config CPU_32v6K
 
 # ARMv7
 config CPU_V7
-        bool "Support ARM V7 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB
+        bool "Support ARM V7 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX
         select CPU_32v6K
         select CPU_32v7
         select CPU_ABRT_EV7
@@ -639,10 +639,23 @@ config CPU_BIG_ENDIAN
           port must properly enable any big-endian related features
           of your chipset/board/processor.
 
+config CPU_ENDIAN_BE8
+        bool
+        depends on CPU_BIG_ENDIAN
+        default CPU_V6 || CPU_V7
+        help
+          Support for the BE-8 (big-endian) mode on ARMv6 and ARMv7 processors.
+
+config CPU_ENDIAN_BE32
+        bool
+        depends on CPU_BIG_ENDIAN
+        default !CPU_ENDIAN_BE8
+        help
+          Support for the BE-32 (big-endian) mode on pre-ARMv6 processors.
+
 config CPU_HIGH_VECTOR
         depends on !MMU && CPU_CP15 && !CPU_ARM740T
         bool "Select the High exception vector"
-        default n
         help
           Say Y here to select high exception vector(0xFFFF0000~).
           The exception vector can be vary depending on the platform
@@ -726,7 +739,6 @@ config NEEDS_SYSCALL_FOR_CMPXCHG
 
 config OUTER_CACHE
         bool
-        default n
 
 config CACHE_FEROCEON_L2
         bool "Enable the Feroceon L2 cache controller"
@@ -739,7 +751,6 @@ config CACHE_FEROCEON_L2
 config CACHE_FEROCEON_L2_WRITETHROUGH
         bool "Force Feroceon L2 cache write through"
         depends on CACHE_FEROCEON_L2
-        default n
         help
           Say Y here to use the Feroceon L2 cache in writethrough mode.
           Unless you specifically require this, say N for writeback mode.
@@ -747,7 +758,7 @@ config CACHE_FEROCEON_L2_WRITETHROUGH
 config CACHE_L2X0
         bool "Enable the L2x0 outer cache controller"
         depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176 || \
-                   REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31
+                   REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX
         default y
         select OUTER_CACHE
         help
diff --git a/arch/arm/mm/abort-ev6.S b/arch/arm/mm/abort-ev6.S
index 6f7e70907e44..f332df7f0d37 100644
--- a/arch/arm/mm/abort-ev6.S
+++ b/arch/arm/mm/abort-ev6.S
@@ -37,6 +37,9 @@ ENTRY(v6_early_abort)
         movne   pc, lr
         do_thumb_abort
         ldreq   r3, [r2]                        @ read aborted ARM instruction
+#ifdef CONFIG_CPU_ENDIAN_BE8
+        reveq   r3, r3
+#endif
         do_ldrd_abort
         tst     r3, #1 << 20                    @ L = 0 -> write
         orreq   r1, r1, #1 << 11                @ yes.
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 9f88dd3be601..0ab75c60f7cf 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -110,6 +110,12 @@ static int remap_area_pages(unsigned long start, unsigned long pfn,
         return err;
 }
 
+int ioremap_page(unsigned long virt, unsigned long phys,
+                 const struct mem_type *mtype)
+{
+        return remap_area_pages(virt, __phys_to_pfn(phys), PAGE_SIZE, mtype);
+}
+EXPORT_SYMBOL(ioremap_page);
 
 void __check_kvm_seq(struct mm_struct *mm)
 {
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index e6344ece00ce..fdaa9bb87c16 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -255,6 +255,7 @@ const struct mem_type *get_mem_type(unsigned int type)
 {
         return type < ARRAY_SIZE(mem_types) ? &mem_types[type] : NULL;
 }
+EXPORT_SYMBOL(get_mem_type);
 
 /*
  * Adjust the PMD section entries according to the CPU in use.
@@ -839,6 +840,20 @@ void __init reserve_node_zero(pg_data_t *pgdat)
                 reserve_bootmem_node(pgdat, 0xa0200000, 0x1000,
                                 BOOTMEM_EXCLUSIVE);
 
+        /*
+         * U300 - This platform family can share physical memory
+         * between two ARM cpus, one running Linux and the other
+         * running another OS.
+         */
+        if (machine_is_u300()) {
+#ifdef CONFIG_MACH_U300_SINGLE_RAM
+#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) &&    \
+        CONFIG_MACH_U300_2MB_ALIGNMENT_FIX
+                res_size = 0x00100000;
+#endif
+#endif
+        }
+
 #ifdef CONFIG_SA1111
         /*
          * Because of the SA1111 DMA bug, we want to preserve our
diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
index 087e239704df..524ddae92595 100644
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -170,6 +170,9 @@ __v6_setup:
 #endif /* CONFIG_MMU */
         adr     r5, v6_crval
         ldmia   r5, {r5, r6}
+#ifdef CONFIG_CPU_ENDIAN_BE8
+        orr     r6, r6, #1 << 25                @ big-endian page tables
+#endif
         mrc     p15, 0, r0, c1, c0, 0           @ read control register
         bic     r0, r0, r5                      @ clear bits them
         orr     r0, r0, r6                      @ set them
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index a08d9d2380d3..180a08d03a03 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -19,17 +19,23 @@
 
 #include "proc-macros.S"
 
-#define TTB_C           (1 << 0)
 #define TTB_S           (1 << 1)
 #define TTB_RGN_NC      (0 << 3)
 #define TTB_RGN_OC_WBWA (1 << 3)
 #define TTB_RGN_OC_WT   (2 << 3)
 #define TTB_RGN_OC_WB   (3 << 3)
+#define TTB_NOS         (1 << 5)
+#define TTB_IRGN_NC     ((0 << 0) | (0 << 6))
+#define TTB_IRGN_WBWA   ((0 << 0) | (1 << 6))
+#define TTB_IRGN_WT     ((1 << 0) | (0 << 6))
+#define TTB_IRGN_WB     ((1 << 0) | (1 << 6))
 
 #ifndef CONFIG_SMP
-#define TTB_FLAGS       TTB_C|TTB_RGN_OC_WB             @ mark PTWs cacheable, outer WB
+/* PTWs cacheable, inner WB not shareable, outer WB not shareable */
+#define TTB_FLAGS       TTB_IRGN_WB|TTB_RGN_OC_WB
 #else
-#define TTB_FLAGS       TTB_C|TTB_S|TTB_RGN_OC_WBWA     @ mark PTWs cacheable and shared, outer WBWA
+/* PTWs cacheable, inner WBWA shareable, outer WBWA not shareable */
+#define TTB_FLAGS       TTB_IRGN_WBWA|TTB_S|TTB_NOS|TTB_RGN_OC_WBWA
 #endif
 
 ENTRY(cpu_v7_proc_init)
@@ -176,8 +182,8 @@ cpu_v7_name:
  */
 __v7_setup:
 #ifdef CONFIG_SMP
-        mrc     p15, 0, r0, c1, c0, 1           @ Enable SMP/nAMP mode
-        orr     r0, r0, #(0x1 << 6)
+        mrc     p15, 0, r0, c1, c0, 1           @ Enable SMP/nAMP mode and
+        orr     r0, r0, #(1 << 6) | (1 << 0)    @ TLB ops broadcasting
         mcr     p15, 0, r0, c1, c0, 1
 #endif
         adr     r12, __v7_setup_stack           @ the local stack
@@ -227,12 +233,43 @@ __v7_setup:
         mov     r10, #0x1f                      @ domains 0, 1 = manager
         mcr     p15, 0, r10, c3, c0, 0          @ load domain access register
 #endif
-        ldr     r5, =0xff0aa1a8
-        ldr     r6, =0x40e040e0
+        /*
+         * Memory region attributes with SCTLR.TRE=1
+         *
+         *   n = TEX[0],C,B
+         *   TR = PRRR[2n+1:2n]         - memory type
+         *   IR = NMRR[2n+1:2n]         - inner cacheable property
+         *   OR = NMRR[2n+17:2n+16]     - outer cacheable property
+         *
+         *                      n       TR      IR      OR
+         *   UNCACHED           000     00
+         *   BUFFERABLE         001     10      00      00
+         *   WRITETHROUGH       010     10      10      10
+         *   WRITEBACK          011     10      11      11
+         *   reserved           110
+         *   WRITEALLOC         111     10      01      01
+         *   DEV_SHARED         100     01
+         *   DEV_NONSHARED      100     01
+         *   DEV_WC             001     10
+         *   DEV_CACHED         011     10
+         *
+         * Other attributes:
+         *
+         *   DS0 = PRRR[16] = 0         - device shareable property
+         *   DS1 = PRRR[17] = 1         - device shareable property
+         *   NS0 = PRRR[18] = 0         - normal shareable property
+         *   NS1 = PRRR[19] = 1         - normal shareable property
+         *   NOS = PRRR[24+n] = 1       - not outer shareable
+         */
+        ldr     r5, =0xff0a81a8                 @ PRRR
+        ldr     r6, =0x40e040e0                 @ NMRR
         mcr     p15, 0, r5, c10, c2, 0          @ write PRRR
         mcr     p15, 0, r6, c10, c2, 1          @ write NMRR
         adr     r5, v7_crval
         ldmia   r5, {r5, r6}
+#ifdef CONFIG_CPU_ENDIAN_BE8
+        orr     r6, r6, #1 << 25                @ big-endian page tables
+#endif
         mrc     p15, 0, r0, c1, c0, 0           @ read control register
         bic     r0, r0, r5                      @ clear bits them
         orr     r0, r0, r6                      @ set them
@@ -240,14 +277,14 @@ __v7_setup:
 ENDPROC(__v7_setup)
 
         /*   AT
-         *  TFR   EV X F   I D LR
-         * .EEE ..EE PUI. .T.T 4RVI ZFRS BLDP WCAM
+         *  TFR   EV X F   I D LR    S
+         * .EEE ..EE PUI. .T.T 4RVI ZWRS BLDP WCAM
          * rxxx rrxx xxx0 0101 xxxx xxxx x111 xxxx < forced
-         *    1    0 110       0011 1.00 .111 1101 < we want
+         *    1    0 110       0011 1100 .111 1101 < we want
          */
         .type   v7_crval, #object
 v7_crval:
-        crval   clear=0x0120c302, mmuset=0x10c0387d, ucset=0x00c0187c
+        crval   clear=0x0120c302, mmuset=0x10c03c7d, ucset=0x00c01c7c
 
 __v7_setup_stack:
         .space  4 * 11                          @ 11 registers
diff --git a/arch/arm/mm/tlb-v7.S b/arch/arm/mm/tlb-v7.S
index b637e7380ab7..a26a605b73bd 100644
--- a/arch/arm/mm/tlb-v7.S
+++ b/arch/arm/mm/tlb-v7.S
@@ -42,9 +42,11 @@ ENTRY(v7wbi_flush_user_tlb_range)
         mov     r1, r1, lsl #PAGE_SHIFT
         vma_vm_flags r2, r2                     @ get vma->vm_flags
 1:
-        mcr     p15, 0, r0, c8, c6, 1           @ TLB invalidate D MVA (was 1)
-        tst     r2, #VM_EXEC                    @ Executable area ?
-        mcrne   p15, 0, r0, c8, c5, 1           @ TLB invalidate I MVA (was 1)
+#ifdef CONFIG_SMP
+        mcr     p15, 0, r0, c8, c3, 1           @ TLB invalidate U MVA (shareable) 
+#else
+        mcr     p15, 0, r0, c8, c7, 1           @ TLB invalidate U MVA
+#endif
         add     r0, r0, #PAGE_SZ
         cmp     r0, r1
         blo     1b
@@ -69,8 +71,11 @@ ENTRY(v7wbi_flush_kern_tlb_range)
         mov     r0, r0, lsl #PAGE_SHIFT
         mov     r1, r1, lsl #PAGE_SHIFT
 1:
-        mcr     p15, 0, r0, c8, c6, 1           @ TLB invalidate D MVA
-        mcr     p15, 0, r0, c8, c5, 1           @ TLB invalidate I MVA
+#ifdef CONFIG_SMP
+        mcr     p15, 0, r0, c8, c3, 1           @ TLB invalidate U MVA (shareable)
+#else
+        mcr     p15, 0, r0, c8, c7, 1           @ TLB invalidate U MVA
+#endif
         add     r0, r0, #PAGE_SZ
         cmp     r0, r1
         blo     1b
@@ -87,5 +92,5 @@ ENDPROC(v7wbi_flush_kern_tlb_range)
 ENTRY(v7wbi_tlb_fns)
         .long   v7wbi_flush_user_tlb_range
         .long   v7wbi_flush_kern_tlb_range
-        .long   v6wbi_tlb_flags
+        .long   v7wbi_tlb_flags
         .size   v7wbi_tlb_fns, . - v7wbi_tlb_fns