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-rw-r--r--arch/arm/mm/proc-xsc3.S13
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)
371ENTRY(cpu_xsc3_set_pte) 366ENTRY(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