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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-08 21:08:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-08 21:08:34 -0700 |
| commit | 2b49350b16fa3171136d7cf351ac7e9e6673b8f2 (patch) | |
| tree | faccf2e838b415951db5de3b199abbf2697aab26 /arch/arm/mm/cache-v7.S | |
| parent | 4d2fa8b44b891f0da5ceda3e5a1402ccf0ab6f26 (diff) | |
| parent | 5ccd3bd992cf668b5a6fa1713da7b443a35e2930 (diff) | |
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- Add a "cut here" to make it clearer where oops dumps should be cut
from - we already have a marker for the end of the dumps.
- Add logging severity to show_pte()
- Drop unnecessary common-page-size linker flag
- Errata workarounds for Cortex A12 857271, Cortex A17 857272 and
Cortex A7 814220.
- Remove some unused variables that had started to provoke a compiler
warning.
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8863/1: stm32: select ARM errata 814220
ARM: 8862/1: errata: 814220-B-Cache maintenance by set/way operations can execute out of order
ARM: 8865/1: mm: remove unused variables
ARM: 8864/1: Add workaround for I-Cache line size mismatch between CPU cores
ARM: 8861/1: errata: Workaround errata A12 857271 / A17 857272
ARM: 8860/1: VDSO: Drop implicit common-page-size linker flag
ARM: arrange show_pte() to issue severity-based messages
ARM: add "8<--- cut here ---" to kernel dumps
Diffstat (limited to 'arch/arm/mm/cache-v7.S')
| -rw-r--r-- | arch/arm/mm/cache-v7.S | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index 8c83b4586883..0ee8fc4b4672 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S @@ -16,6 +16,14 @@ #include "proc-macros.S" +#ifdef CONFIG_CPU_ICACHE_MISMATCH_WORKAROUND +.globl icache_size + .data + .align 2 +icache_size: + .long 64 + .text +#endif /* * The secondary kernel init calls v7_flush_dcache_all before it enables * the L1; however, the L1 comes out of reset in an undefined state, so @@ -160,6 +168,9 @@ loop2: skip: add r10, r10, #2 @ increment cache number cmp r3, r10 +#ifdef CONFIG_ARM_ERRATA_814220 + dsb +#endif bgt flush_levels finished: mov r10, #0 @ switch back to cache level 0 @@ -281,7 +292,12 @@ ENTRY(v7_coherent_user_range) cmp r12, r1 blo 1b dsb ishst +#ifdef CONFIG_CPU_ICACHE_MISMATCH_WORKAROUND + ldr r3, =icache_size + ldr r2, [r3, #0] +#else icache_line_size r2, r3 +#endif sub r3, r2, #1 bic r12, r0, r3 2: |