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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-05 18:07:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-05 18:07:32 -0700 |
| commit | 2e032852245b3dcfe5461d7353e34eb6da095ccf (patch) | |
| tree | 69f9fdf03b54d76bb539096e0ec96e91ea8216b1 /arch/arm/mm/proc-v7.S | |
| parent | 356f9e74ffaafd11741589a9aa21d6c9d2721417 (diff) | |
| parent | 141b97433d77e39ac3ac111a7b3852192035259c (diff) | |
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King:
"This set includes adding support for Neon acceleration of RAID6 XOR
code from Ard Biesheuvel, cache flushing and barrier updates from Will
Deacon, and a cleanup to the ARM debug code which reduces the amount
of code by about 500 lines.
A few other cleanups, such as constifying the machine descriptors
which already shouldn't be written to, cleaning up the printing of the
L2 cache size"
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (55 commits)
ARM: 7826/1: debug: support debug ll on hisilicon soc
ARM: 7830/1: delay: don't bother reporting bogomips in /proc/cpuinfo
ARM: 7829/1: Add ".text.unlikely" and ".text.hot" to arm unwind tables
ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines
ARM: 7827/1: highbank: fix debug uart virtual address for LPAE
ARM: 7823/1: errata: workaround Cortex-A15 erratum 773022
ARM: 7806/1: allow DEBUG_UNCOMPRESS for Tegra
ARM: 7793/1: debug: use generic option for ep93xx PL10x debug port
ARM: debug: move SPEAr debug to generic PL01x code
ARM: debug: move davinci debug to generic 8250 code
ARM: debug: move keystone debug to generic 8250 code
ARM: debug: remove DEBUG_ROCKCHIP_UART
ARM: debug: provide generic option choices for 8250 and PL01x ports
ARM: debug: move PL01X debug include into arch/arm/include/debug/
ARM: debug: provide PL01x debug uart phys/virt address configuration options
ARM: debug: add support for word accesses to debug/8250.S
ARM: debug: move 8250 debug include into arch/arm/include/debug/
ARM: debug: provide 8250 debug uart phys/virt address configuration options
ARM: debug: provide 8250 debug uart register shift configuration option
ARM: debug: provide 8250 debug uart flow control configuration option
...
Diffstat (limited to 'arch/arm/mm/proc-v7.S')
| -rw-r--r-- | arch/arm/mm/proc-v7.S | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 73398bcf9bd..c63d9bdee51 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -83,7 +83,7 @@ ENTRY(cpu_v7_dcache_clean_area) add r0, r0, r2 subs r1, r1, r2 bhi 2b - dsb + dsb ishst mov pc, lr ENDPROC(cpu_v7_dcache_clean_area) @@ -330,7 +330,19 @@ __v7_setup: 1: #endif -3: mov r10, #0 + /* Cortex-A15 Errata */ +3: ldr r10, =0x00000c0f @ Cortex-A15 primary part number + teq r0, r10 + bne 4f + +#ifdef CONFIG_ARM_ERRATA_773022 + cmp r6, #0x4 @ only present up to r0p4 + mrcle p15, 0, r10, c1, c0, 1 @ read aux control register + orrle r10, r10, #1 << 1 @ disable loop buffer + mcrle p15, 0, r10, c1, c0, 1 @ write aux control register +#endif + +4: mov r10, #0 mcr p15, 0, r10, c7, c5, 0 @ I+BTB cache invalidate dsb #ifdef CONFIG_MMU |