diff options
Diffstat (limited to 'arch/arm/mm/proc-xsc3.S')
-rw-r--r-- | arch/arm/mm/proc-xsc3.S | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S index 4ace2d8090c7..1ef564d0957f 100644 --- a/arch/arm/mm/proc-xsc3.S +++ b/arch/arm/mm/proc-xsc3.S | |||
@@ -27,7 +27,7 @@ | |||
27 | #include <linux/linkage.h> | 27 | #include <linux/linkage.h> |
28 | #include <linux/init.h> | 28 | #include <linux/init.h> |
29 | #include <asm/assembler.h> | 29 | #include <asm/assembler.h> |
30 | #include <asm/procinfo.h> | 30 | #include <asm/elf.h> |
31 | #include <asm/hardware.h> | 31 | #include <asm/hardware.h> |
32 | #include <asm/pgtable.h> | 32 | #include <asm/pgtable.h> |
33 | #include <asm/pgtable-hwdef.h> | 33 | #include <asm/pgtable-hwdef.h> |
@@ -57,11 +57,6 @@ | |||
57 | #define L2_CACHE_ENABLE 1 | 57 | #define L2_CACHE_ENABLE 1 |
58 | 58 | ||
59 | /* | 59 | /* |
60 | * Enable the Branch Target Buffer (can cause crashes, see erratum #42.) | ||
61 | */ | ||
62 | #define BTB_ENABLE 0 | ||
63 | |||
64 | /* | ||
65 | * This macro is used to wait for a CP15 write and is needed | 60 | * This macro is used to wait for a CP15 write and is needed |
66 | * when we have to ensure that the last operation to the co-pro | 61 | * when we have to ensure that the last operation to the co-pro |
67 | * was completed before continuing with operation. | 62 | * was completed before continuing with operation. |
@@ -371,8 +366,10 @@ ENTRY(cpu_xsc3_switch_mm) | |||
371 | ENTRY(cpu_xsc3_set_pte) | 366 | ENTRY(cpu_xsc3_set_pte) |
372 | str r1, [r0], #-2048 @ linux version | 367 | str r1, [r0], #-2048 @ linux version |
373 | 368 | ||
374 | bic r2, r1, #0xdf0 @ Keep C, B, coherency bits | 369 | bic r2, r1, #0xff0 @ Keep C, B bits |
375 | orr r2, r2, #PTE_TYPE_EXT @ extended page | 370 | orr r2, r2, #PTE_TYPE_EXT @ extended page |
371 | tst r1, #L_PTE_SHARED @ Shared? | ||
372 | orrne r2, r2, #0x200 | ||
376 | 373 | ||
377 | eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY | 374 | eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY |
378 | 375 | ||
@@ -432,9 +429,7 @@ __xsc3_setup: | |||
432 | mrc p15, 0, r0, c1, c0, 0 @ get control register | 429 | mrc p15, 0, r0, c1, c0, 0 @ get control register |
433 | bic r0, r0, r5 @ .... .... .... ..A. | 430 | bic r0, r0, r5 @ .... .... .... ..A. |
434 | orr r0, r0, r6 @ .... .... .... .C.M | 431 | orr r0, r0, r6 @ .... .... .... .C.M |
435 | #if BTB_ENABLE | ||
436 | orr r0, r0, #0x00000800 @ ..VI Z..S .... .... | 432 | orr r0, r0, #0x00000800 @ ..VI Z..S .... .... |
437 | #endif | ||
438 | #if L2_CACHE_ENABLE | 433 | #if L2_CACHE_ENABLE |
439 | orr r0, r0, #0x04000000 @ L2 enable | 434 | orr r0, r0, #0x04000000 @ L2 enable |
440 | #endif | 435 | #endif |