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-rw-r--r--arch/arm/mm/proc-arm1020.S9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mm/proc-arm1020.S b/arch/arm/mm/proc-arm1020.S
index 959588884fa5..b9abbafca812 100644
--- a/arch/arm/mm/proc-arm1020.S
+++ b/arch/arm/mm/proc-arm1020.S
@@ -3,6 +3,7 @@
3 * 3 *
4 * Copyright (C) 2000 ARM Limited 4 * Copyright (C) 2000 ARM Limited
5 * Copyright (C) 2000 Deep Blue Solutions Ltd. 5 * Copyright (C) 2000 Deep Blue Solutions Ltd.
6 * hacked for non-paged-MM by Hyok S. Choi, 2003.
6 * 7 *
7 * This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
@@ -101,7 +102,9 @@ ENTRY(cpu_arm1020_reset)
101 mov ip, #0 102 mov ip, #0
102 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches 103 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches
103 mcr p15, 0, ip, c7, c10, 4 @ drain WB 104 mcr p15, 0, ip, c7, c10, 4 @ drain WB
105#ifdef CONFIG_MMU
104 mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs 106 mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs
107#endif
105 mrc p15, 0, ip, c1, c0, 0 @ ctrl register 108 mrc p15, 0, ip, c1, c0, 0 @ ctrl register
106 bic ip, ip, #0x000f @ ............wcam 109 bic ip, ip, #0x000f @ ............wcam
107 bic ip, ip, #0x1100 @ ...i...s........ 110 bic ip, ip, #0x1100 @ ...i...s........
@@ -359,6 +362,7 @@ ENTRY(cpu_arm1020_dcache_clean_area)
359 */ 362 */
360 .align 5 363 .align 5
361ENTRY(cpu_arm1020_switch_mm) 364ENTRY(cpu_arm1020_switch_mm)
365#ifdef CONFIG_MMU
362#ifndef CONFIG_CPU_DCACHE_DISABLE 366#ifndef CONFIG_CPU_DCACHE_DISABLE
363 mcr p15, 0, r3, c7, c10, 4 367 mcr p15, 0, r3, c7, c10, 4
364 mov r1, #0xF @ 16 segments 368 mov r1, #0xF @ 16 segments
@@ -383,6 +387,7 @@ ENTRY(cpu_arm1020_switch_mm)
383 mcr p15, 0, r1, c7, c10, 4 @ drain WB 387 mcr p15, 0, r1, c7, c10, 4 @ drain WB
384 mcr p15, 0, r0, c2, c0, 0 @ load page table pointer 388 mcr p15, 0, r0, c2, c0, 0 @ load page table pointer
385 mcr p15, 0, r1, c8, c7, 0 @ invalidate I & D TLBs 389 mcr p15, 0, r1, c8, c7, 0 @ invalidate I & D TLBs
390#endif /* CONFIG_MMU */
386 mov pc, lr 391 mov pc, lr
387 392
388/* 393/*
@@ -392,6 +397,7 @@ ENTRY(cpu_arm1020_switch_mm)
392 */ 397 */
393 .align 5 398 .align 5
394ENTRY(cpu_arm1020_set_pte) 399ENTRY(cpu_arm1020_set_pte)
400#ifdef CONFIG_MMU
395 str r1, [r0], #-2048 @ linux version 401 str r1, [r0], #-2048 @ linux version
396 402
397 eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY 403 eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY
@@ -421,6 +427,7 @@ ENTRY(cpu_arm1020_set_pte)
421 mcr p15, 0, r0, c7, c10, 1 @ clean D entry 427 mcr p15, 0, r0, c7, c10, 1 @ clean D entry
422#endif 428#endif
423 mcr p15, 0, r0, c7, c10, 4 @ drain WB 429 mcr p15, 0, r0, c7, c10, 4 @ drain WB
430#endif /* CONFIG_MMU */
424 mov pc, lr 431 mov pc, lr
425 432
426 __INIT 433 __INIT
@@ -430,7 +437,9 @@ __arm1020_setup:
430 mov r0, #0 437 mov r0, #0
431 mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4 438 mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4
432 mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 439 mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4
440#ifdef CONFIG_MMU
433 mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 441 mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4
442#endif
434 mrc p15, 0, r0, c1, c0 @ get control register v4 443 mrc p15, 0, r0, c1, c0 @ get control register v4
435 ldr r5, arm1020_cr1_clear 444 ldr r5, arm1020_cr1_clear
436 bic r0, r0, r5 445 bic r0, r0, r5