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-rw-r--r--arch/arm/mm/proc-xsc3.S80
1 files changed, 29 insertions, 51 deletions
diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S
index 3533741a76f..04dc8b65401 100644
--- a/arch/arm/mm/proc-xsc3.S
+++ b/arch/arm/mm/proc-xsc3.S
@@ -27,8 +27,8 @@
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/assembler.h>
-#include <asm/elf.h>
-#include <asm/hardware.h>
+#include <asm/hwcap.h>
+#include <mach/hardware.h>
#include <asm/pgtable.h>
#include <asm/pgtable-hwdef.h>
#include <asm/page.h>
@@ -52,11 +52,6 @@
#define CACHESIZE 32768
/*
- * Run with L2 enabled.
- */
-#define L2_CACHE_ENABLE 1
-
-/*
* This macro is used to wait for a CP15 write and is needed when we
* have to ensure that the last operation to the coprocessor was
* completed before continuing with operation.
@@ -265,12 +260,9 @@ ENTRY(xsc3_dma_inv_range)
tst r0, #CACHELINESIZE - 1
bic r0, r0, #CACHELINESIZE - 1
mcrne p15, 0, r0, c7, c10, 1 @ clean L1 D line
- mcrne p15, 1, r0, c7, c11, 1 @ clean L2 line
tst r1, #CACHELINESIZE - 1
mcrne p15, 0, r1, c7, c10, 1 @ clean L1 D line
- mcrne p15, 1, r1, c7, c11, 1 @ clean L2 line
1: mcr p15, 0, r0, c7, c6, 1 @ invalidate L1 D line
- mcr p15, 1, r0, c7, c7, 1 @ invalidate L2 line
add r0, r0, #CACHELINESIZE
cmp r0, r1
blo 1b
@@ -288,7 +280,6 @@ ENTRY(xsc3_dma_inv_range)
ENTRY(xsc3_dma_clean_range)
bic r0, r0, #CACHELINESIZE - 1
1: mcr p15, 0, r0, c7, c10, 1 @ clean L1 D line
- mcr p15, 1, r0, c7, c11, 1 @ clean L2 line
add r0, r0, #CACHELINESIZE
cmp r0, r1
blo 1b
@@ -306,8 +297,6 @@ ENTRY(xsc3_dma_clean_range)
ENTRY(xsc3_dma_flush_range)
bic r0, r0, #CACHELINESIZE - 1
1: mcr p15, 0, r0, c7, c14, 1 @ clean/invalidate L1 D line
- mcr p15, 1, r0, c7, c11, 1 @ clean L2 line
- mcr p15, 1, r0, c7, c7, 1 @ invalidate L2 line
add r0, r0, #CACHELINESIZE
cmp r0, r1
blo 1b
@@ -347,9 +336,7 @@ ENTRY(cpu_xsc3_switch_mm)
mcr p15, 0, ip, c7, c5, 0 @ invalidate L1 I cache and BTB
mcr p15, 0, ip, c7, c10, 4 @ data write barrier
mcr p15, 0, ip, c7, c5, 4 @ prefetch flush
-#ifdef L2_CACHE_ENABLE
orr r0, r0, #0x18 @ cache the page table in L2
-#endif
mcr p15, 0, r0, c2, c0, 0 @ load page table pointer
mcr p15, 0, ip, c8, c7, 0 @ invalidate I and D TLBs
cpwait_ret lr, ip
@@ -358,40 +345,38 @@ ENTRY(cpu_xsc3_switch_mm)
* cpu_xsc3_set_pte_ext(ptep, pte, ext)
*
* Set a PTE and flush it out
- *
*/
+cpu_xsc3_mt_table:
+ .long 0x00 @ L_PTE_MT_UNCACHED
+ .long PTE_EXT_TEX(1) @ L_PTE_MT_BUFFERABLE
+ .long PTE_CACHEABLE @ L_PTE_MT_WRITETHROUGH
+ .long PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_WRITEBACK
+ .long PTE_EXT_TEX(1) | PTE_BUFFERABLE @ L_PTE_MT_DEV_SHARED
+ .long 0x00 @ unused
+ .long 0x00 @ L_PTE_MT_MINICACHE (not present)
+ .long PTE_EXT_TEX(5) | PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_WRITEALLOC (not present?)
+ .long 0x00 @ unused
+ .long PTE_EXT_TEX(1) @ L_PTE_MT_DEV_WC
+ .long 0x00 @ unused
+ .long PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_DEV_CACHED
+ .long PTE_EXT_TEX(2) @ L_PTE_MT_DEV_NONSHARED
+ .long 0x00 @ unused
+ .long 0x00 @ unused
+ .long 0x00 @ unused
+
.align 5
ENTRY(cpu_xsc3_set_pte_ext)
- str r1, [r0], #-2048 @ linux version
+ xscale_set_pte_ext_prologue
- bic r2, r1, #0xff0 @ keep C, B bits
- orr r2, r2, #PTE_TYPE_EXT @ extended page
tst r1, #L_PTE_SHARED @ shared?
- orrne r2, r2, #0x200
-
- eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY
-
- tst r3, #L_PTE_USER @ user?
- orrne r2, r2, #PTE_EXT_AP_URO_SRW @ yes -> user r/o, system r/w
-
- tst r3, #L_PTE_WRITE | L_PTE_DIRTY @ write and dirty?
- orreq r2, r2, #PTE_EXT_AP_UNO_SRW @ yes -> user n/a, system r/w
- @ combined with user -> user r/w
-
-#if L2_CACHE_ENABLE
- @ If it's cacheable, it needs to be in L2 also.
- eor ip, r1, #L_PTE_CACHEABLE
- tst ip, #L_PTE_CACHEABLE
- orreq r2, r2, #PTE_EXT_TEX(0x5)
-#endif
-
- tst r3, #L_PTE_PRESENT | L_PTE_YOUNG @ present and young?
- movne r2, #0 @ no -> fault
-
- str r2, [r0] @ hardware version
- mov ip, #0
- mcr p15, 0, r0, c7, c10, 1 @ clean L1 D line
- mcr p15, 0, ip, c7, c10, 4 @ data write barrier
+ and r1, r1, #L_PTE_MT_MASK
+ adr ip, cpu_xsc3_mt_table
+ ldr ip, [ip, r1]
+ orrne r2, r2, #PTE_EXT_COHERENT @ interlock: mask in coherent bit
+ bic r2, r2, #0x0c @ clear old C,B bits
+ orr r2, r2, ip
+
+ xscale_set_pte_ext_epilogue
mov pc, lr
.ltorg
@@ -408,9 +393,7 @@ __xsc3_setup:
mcr p15, 0, ip, c7, c10, 4 @ data write barrier
mcr p15, 0, ip, c7, c5, 4 @ prefetch flush
mcr p15, 0, ip, c8, c7, 0 @ invalidate I and D TLBs
-#if L2_CACHE_ENABLE
orr r4, r4, #0x18 @ cache the page table in L2
-#endif
mcr p15, 0, r4, c2, c0, 0 @ load page table pointer
mov r0, #0 @ don't allow CP access
@@ -418,9 +401,7 @@ __xsc3_setup:
mrc p15, 0, r0, c1, c0, 1 @ get auxiliary control reg
and r0, r0, #2 @ preserve bit P bit setting
-#if L2_CACHE_ENABLE
orr r0, r0, #(1 << 10) @ enable L2 for LLR cache
-#endif
mcr p15, 0, r0, c1, c0, 1 @ set auxiliary control reg
adr r5, xsc3_crval
@@ -429,9 +410,6 @@ __xsc3_setup:
bic r0, r0, r5 @ ..V. ..R. .... ..A.
orr r0, r0, r6 @ ..VI Z..S .... .C.M (mmu)
@ ...I Z..S .... .... (uc)
-#if L2_CACHE_ENABLE
- orr r0, r0, #0x04000000 @ L2 enable
-#endif
mov pc, lr
.size __xsc3_setup, . - __xsc3_setup