diff options
Diffstat (limited to 'arch/arm/mm/proc-arm926.S')
-rw-r--r-- | arch/arm/mm/proc-arm926.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mm/proc-arm926.S b/arch/arm/mm/proc-arm926.S index 4e2a087cf388..cb4d8f33d2a3 100644 --- a/arch/arm/mm/proc-arm926.S +++ b/arch/arm/mm/proc-arm926.S | |||
@@ -3,6 +3,7 @@ | |||
3 | * | 3 | * |
4 | * Copyright (C) 1999-2001 ARM Limited | 4 | * Copyright (C) 1999-2001 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 |
@@ -85,7 +86,9 @@ ENTRY(cpu_arm926_reset) | |||
85 | mov ip, #0 | 86 | mov ip, #0 |
86 | mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches | 87 | mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches |
87 | mcr p15, 0, ip, c7, c10, 4 @ drain WB | 88 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
89 | #ifdef CONFIG_MMU | ||
88 | mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs | 90 | mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs |
91 | #endif | ||
89 | mrc p15, 0, ip, c1, c0, 0 @ ctrl register | 92 | mrc p15, 0, ip, c1, c0, 0 @ ctrl register |
90 | bic ip, ip, #0x000f @ ............wcam | 93 | bic ip, ip, #0x000f @ ............wcam |
91 | bic ip, ip, #0x1100 @ ...i...s........ | 94 | bic ip, ip, #0x1100 @ ...i...s........ |
@@ -329,6 +332,7 @@ ENTRY(cpu_arm926_dcache_clean_area) | |||
329 | */ | 332 | */ |
330 | .align 5 | 333 | .align 5 |
331 | ENTRY(cpu_arm926_switch_mm) | 334 | ENTRY(cpu_arm926_switch_mm) |
335 | #ifdef CONFIG_MMU | ||
332 | mov ip, #0 | 336 | mov ip, #0 |
333 | #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH | 337 | #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH |
334 | mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache | 338 | mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache |
@@ -341,6 +345,7 @@ ENTRY(cpu_arm926_switch_mm) | |||
341 | mcr p15, 0, ip, c7, c10, 4 @ drain WB | 345 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
342 | mcr p15, 0, r0, c2, c0, 0 @ load page table pointer | 346 | mcr p15, 0, r0, c2, c0, 0 @ load page table pointer |
343 | mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs | 347 | mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs |
348 | #endif | ||
344 | mov pc, lr | 349 | mov pc, lr |
345 | 350 | ||
346 | /* | 351 | /* |
@@ -350,6 +355,7 @@ ENTRY(cpu_arm926_switch_mm) | |||
350 | */ | 355 | */ |
351 | .align 5 | 356 | .align 5 |
352 | ENTRY(cpu_arm926_set_pte) | 357 | ENTRY(cpu_arm926_set_pte) |
358 | #ifdef CONFIG_MMU | ||
353 | str r1, [r0], #-2048 @ linux version | 359 | str r1, [r0], #-2048 @ linux version |
354 | 360 | ||
355 | eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY | 361 | eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY |
@@ -378,6 +384,7 @@ ENTRY(cpu_arm926_set_pte) | |||
378 | mcr p15, 0, r0, c7, c10, 1 @ clean D entry | 384 | mcr p15, 0, r0, c7, c10, 1 @ clean D entry |
379 | #endif | 385 | #endif |
380 | mcr p15, 0, r0, c7, c10, 4 @ drain WB | 386 | mcr p15, 0, r0, c7, c10, 4 @ drain WB |
387 | #endif | ||
381 | mov pc, lr | 388 | mov pc, lr |
382 | 389 | ||
383 | __INIT | 390 | __INIT |
@@ -387,7 +394,9 @@ __arm926_setup: | |||
387 | mov r0, #0 | 394 | mov r0, #0 |
388 | mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4 | 395 | mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4 |
389 | mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 | 396 | mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 |
397 | #ifdef CONFIG_MMU | ||
390 | mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 | 398 | mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 |
399 | #endif | ||
391 | 400 | ||
392 | 401 | ||
393 | #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH | 402 | #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH |