diff options
Diffstat (limited to 'arch/arm/mm/proc-arm922.S')
-rw-r--r-- | arch/arm/mm/proc-arm922.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mm/proc-arm922.S b/arch/arm/mm/proc-arm922.S index bbde4a024a48..9e57c34f5c09 100644 --- a/arch/arm/mm/proc-arm922.S +++ b/arch/arm/mm/proc-arm922.S | |||
@@ -4,6 +4,7 @@ | |||
4 | * Copyright (C) 1999,2000 ARM Limited | 4 | * Copyright (C) 1999,2000 ARM Limited |
5 | * Copyright (C) 2000 Deep Blue Solutions Ltd. | 5 | * Copyright (C) 2000 Deep Blue Solutions Ltd. |
6 | * Copyright (C) 2001 Altera Corporation | 6 | * Copyright (C) 2001 Altera Corporation |
7 | * hacked for non-paged-MM by Hyok S. Choi, 2003. | ||
7 | * | 8 | * |
8 | * This program is free software; you can redistribute it and/or modify | 9 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published by | 10 | * it under the terms of the GNU General Public License as published by |
@@ -99,7 +100,9 @@ ENTRY(cpu_arm922_reset) | |||
99 | mov ip, #0 | 100 | mov ip, #0 |
100 | mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches | 101 | mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches |
101 | mcr p15, 0, ip, c7, c10, 4 @ drain WB | 102 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
103 | #ifdef CONFIG_MMU | ||
102 | mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs | 104 | mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs |
105 | #endif | ||
103 | mrc p15, 0, ip, c1, c0, 0 @ ctrl register | 106 | mrc p15, 0, ip, c1, c0, 0 @ ctrl register |
104 | bic ip, ip, #0x000f @ ............wcam | 107 | bic ip, ip, #0x000f @ ............wcam |
105 | bic ip, ip, #0x1100 @ ...i...s........ | 108 | bic ip, ip, #0x1100 @ ...i...s........ |
@@ -321,6 +324,7 @@ ENTRY(cpu_arm922_dcache_clean_area) | |||
321 | */ | 324 | */ |
322 | .align 5 | 325 | .align 5 |
323 | ENTRY(cpu_arm922_switch_mm) | 326 | ENTRY(cpu_arm922_switch_mm) |
327 | #ifdef CONFIG_MMU | ||
324 | mov ip, #0 | 328 | mov ip, #0 |
325 | #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH | 329 | #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH |
326 | mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache | 330 | mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache |
@@ -341,6 +345,7 @@ ENTRY(cpu_arm922_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_arm922_switch_mm) | |||
350 | */ | 355 | */ |
351 | .align 5 | 356 | .align 5 |
352 | ENTRY(cpu_arm922_set_pte) | 357 | ENTRY(cpu_arm922_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 |
@@ -376,6 +382,7 @@ ENTRY(cpu_arm922_set_pte) | |||
376 | mov r0, r0 | 382 | mov r0, r0 |
377 | mcr p15, 0, r0, c7, c10, 1 @ clean D entry | 383 | mcr p15, 0, r0, c7, c10, 1 @ clean D entry |
378 | mcr p15, 0, r0, c7, c10, 4 @ drain WB | 384 | mcr p15, 0, r0, c7, c10, 4 @ drain WB |
385 | #endif /* CONFIG_MMU */ | ||
379 | mov pc, lr | 386 | mov pc, lr |
380 | 387 | ||
381 | __INIT | 388 | __INIT |
@@ -385,7 +392,9 @@ __arm922_setup: | |||
385 | mov r0, #0 | 392 | mov r0, #0 |
386 | mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4 | 393 | mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4 |
387 | mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 | 394 | mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 |
395 | #ifdef CONFIG_MMU | ||
388 | mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 | 396 | mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 |
397 | #endif | ||
389 | mrc p15, 0, r0, c1, c0 @ get control register v4 | 398 | mrc p15, 0, r0, c1, c0 @ get control register v4 |
390 | ldr r5, arm922_cr1_clear | 399 | ldr r5, arm922_cr1_clear |
391 | bic r0, r0, r5 | 400 | bic r0, r0, r5 |