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author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-28 19:20:49 -0400 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-28 19:20:49 -0400 |
commit | 27d68a36c4f1ca2fc6be82620843493462c08c51 (patch) | |
tree | a06b451e19c25a77595c918ca81bbb30f0ec9ebf /arch/arm/mm/proc-arm1026.S | |
parent | 76a22271fd14e3fe7660f8646db12f0780fa4fd2 (diff) | |
parent | 583e7f5d36547f0d84caf71d43b71f0530a47766 (diff) |
Merge branch 'nommu' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'nommu' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] nommu: backtrace code must not reference a discarded section
[ARM] nommu: Initial uCLinux support for MMU-based CPUs
[ARM] nommu: prevent Xscale-based machines being selected
[ARM] nommu: export flush_dcache_page()
[ARM] nommu: remove fault-armv, mmap and mm-armv files from nommu build
[ARM] Remove TABLE_SIZE, and several unused function prototypes
[ARM] nommu: Provide a simple flush_dcache_page implementation
[ARM] nommu: add arch/arm/Kconfig-nommu to Kconfig files
[ARM] nommu: add stubs for ioremap and friends
[ARM] nommu: avoid selecting TLB and CPU specific copy code
[ARM] nommu: uaccess tweaks
[ARM] nommu: adjust headers for !MMU ARM systems
[ARM] nommu: we need the TLS register emulation for nommu mode
Diffstat (limited to 'arch/arm/mm/proc-arm1026.S')
-rw-r--r-- | arch/arm/mm/proc-arm1026.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mm/proc-arm1026.S b/arch/arm/mm/proc-arm1026.S index 148c111fde73..abe850c9a641 100644 --- a/arch/arm/mm/proc-arm1026.S +++ b/arch/arm/mm/proc-arm1026.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 |
@@ -90,7 +91,9 @@ ENTRY(cpu_arm1026_reset) | |||
90 | mov ip, #0 | 91 | mov ip, #0 |
91 | mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches | 92 | mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches |
92 | mcr p15, 0, ip, c7, c10, 4 @ drain WB | 93 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
94 | #ifdef CONFIG_MMU | ||
93 | mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs | 95 | mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs |
96 | #endif | ||
94 | mrc p15, 0, ip, c1, c0, 0 @ ctrl register | 97 | mrc p15, 0, ip, c1, c0, 0 @ ctrl register |
95 | bic ip, ip, #0x000f @ ............wcam | 98 | bic ip, ip, #0x000f @ ............wcam |
96 | bic ip, ip, #0x1100 @ ...i...s........ | 99 | bic ip, ip, #0x1100 @ ...i...s........ |
@@ -327,6 +330,7 @@ ENTRY(cpu_arm1026_dcache_clean_area) | |||
327 | */ | 330 | */ |
328 | .align 5 | 331 | .align 5 |
329 | ENTRY(cpu_arm1026_switch_mm) | 332 | ENTRY(cpu_arm1026_switch_mm) |
333 | #ifdef CONFIG_MMU | ||
330 | mov r1, #0 | 334 | mov r1, #0 |
331 | #ifndef CONFIG_CPU_DCACHE_DISABLE | 335 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
332 | 1: mrc p15, 0, r15, c7, c14, 3 @ test, clean, invalidate | 336 | 1: mrc p15, 0, r15, c7, c14, 3 @ test, clean, invalidate |
@@ -338,6 +342,7 @@ ENTRY(cpu_arm1026_switch_mm) | |||
338 | mcr p15, 0, r1, c7, c10, 4 @ drain WB | 342 | mcr p15, 0, r1, c7, c10, 4 @ drain WB |
339 | mcr p15, 0, r0, c2, c0, 0 @ load page table pointer | 343 | mcr p15, 0, r0, c2, c0, 0 @ load page table pointer |
340 | mcr p15, 0, r1, c8, c7, 0 @ invalidate I & D TLBs | 344 | mcr p15, 0, r1, c8, c7, 0 @ invalidate I & D TLBs |
345 | #endif | ||
341 | mov pc, lr | 346 | mov pc, lr |
342 | 347 | ||
343 | /* | 348 | /* |
@@ -347,6 +352,7 @@ ENTRY(cpu_arm1026_switch_mm) | |||
347 | */ | 352 | */ |
348 | .align 5 | 353 | .align 5 |
349 | ENTRY(cpu_arm1026_set_pte) | 354 | ENTRY(cpu_arm1026_set_pte) |
355 | #ifdef CONFIG_MMU | ||
350 | str r1, [r0], #-2048 @ linux version | 356 | str r1, [r0], #-2048 @ linux version |
351 | 357 | ||
352 | eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY | 358 | eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY |
@@ -374,6 +380,7 @@ ENTRY(cpu_arm1026_set_pte) | |||
374 | #ifndef CONFIG_CPU_DCACHE_DISABLE | 380 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
375 | mcr p15, 0, r0, c7, c10, 1 @ clean D entry | 381 | mcr p15, 0, r0, c7, c10, 1 @ clean D entry |
376 | #endif | 382 | #endif |
383 | #endif /* CONFIG_MMU */ | ||
377 | mov pc, lr | 384 | mov pc, lr |
378 | 385 | ||
379 | 386 | ||
@@ -384,8 +391,10 @@ __arm1026_setup: | |||
384 | mov r0, #0 | 391 | mov r0, #0 |
385 | mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4 | 392 | mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4 |
386 | mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 | 393 | mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 |
394 | #ifdef CONFIG_MMU | ||
387 | mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 | 395 | mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 |
388 | mcr p15, 0, r4, c2, c0 @ load page table pointer | 396 | mcr p15, 0, r4, c2, c0 @ load page table pointer |
397 | #endif | ||
389 | #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH | 398 | #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH |
390 | mov r0, #4 @ explicitly disable writeback | 399 | mov r0, #4 @ explicitly disable writeback |
391 | mcr p15, 7, r0, c15, c0, 0 | 400 | mcr p15, 7, r0, c15, c0, 0 |