diff options
| author | Jason Liu <r64343@freescale.com> | 2015-07-24 17:06:11 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2015-09-17 09:24:07 -0500 |
| commit | 0e9a87bbd4f7d1c48e42c65aa94939a7283599dd (patch) | |
| tree | b1381bc2e965016c2420bea64532fd0042dfef79 /arch/arm/mach-imx/Kconfig | |
| parent | 390ff151673f283a034b7012931a46745bfd3942 (diff) | |
MLK-11284 ARM: ERRATA: Add ARM/MP: 814220 SW workaround
ARM/MP: 814220—B-Cache maintenance by set/way operations can execute out of order.
Description:
The v7 ARM states that all cache and branch predictor maintenance operations
that do not specify an address execute, relative to each other, in program
order. However, because of this erratum, an L2 set/way cache maintenance
operation can overtake an L1 set/way cache maintenance operation, this would
cause the data corruption.
This ERRATA affected the Cortex-A7 and present in r0p2, r0p3, r0p4, r0p5.
This patch is the SW workaround by adding a DSB before changing cache levels as
the ARM ERRATA: ARM/MP: 814220 told in the ARM ERRATA documentation.
Signed-off-by: Jason Liu <r64343@freescale.com>
Diffstat (limited to 'arch/arm/mach-imx/Kconfig')
| -rw-r--r-- | arch/arm/mach-imx/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index 117100a2e1da..b883e2a07c56 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -861,6 +861,7 @@ config SOC_IMX6UL select MIGHT_HAVE_PCI select PCI_DOMAINS if PCI select SOC_IMX6 + select ARM_ERRATA_814220 help This enables support for Freescale i.MX6 UltraLite processor. @@ -871,6 +872,7 @@ config SOC_IMX7 select ARM_GIC select HAVE_SMP select HAVE_IMX_DDRC + select ARM_ERRATA_814220 config SOC_IMX7D bool "i.MX7 Dual support" |