diff options
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r-- | arch/arm/Kconfig | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 5ebc5d922ea1..3146ed3f6eca 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig | |||
@@ -1271,6 +1271,32 @@ config ARM_ERRATA_754327 | |||
1271 | This workaround defines cpu_relax() as smp_mb(), preventing correctly | 1271 | This workaround defines cpu_relax() as smp_mb(), preventing correctly |
1272 | written polling loops from denying visibility of updates to memory. | 1272 | written polling loops from denying visibility of updates to memory. |
1273 | 1273 | ||
1274 | config ARM_ERRATA_364296 | ||
1275 | bool "ARM errata: Possible cache data corruption with hit-under-miss enabled" | ||
1276 | depends on CPU_V6 && !SMP | ||
1277 | help | ||
1278 | This options enables the workaround for the 364296 ARM1136 | ||
1279 | r0p2 erratum (possible cache data corruption with | ||
1280 | hit-under-miss enabled). It sets the undocumented bit 31 in | ||
1281 | the auxiliary control register and the FI bit in the control | ||
1282 | register, thus disabling hit-under-miss without putting the | ||
1283 | processor into full low interrupt latency mode. ARM11MPCore | ||
1284 | is not affected. | ||
1285 | |||
1286 | config ARM_ERRATA_764369 | ||
1287 | bool "ARM errata: Data cache line maintenance operation by MVA may not succeed" | ||
1288 | depends on CPU_V7 && SMP | ||
1289 | help | ||
1290 | This option enables the workaround for erratum 764369 | ||
1291 | affecting Cortex-A9 MPCore with two or more processors (all | ||
1292 | current revisions). Under certain timing circumstances, a data | ||
1293 | cache line maintenance operation by MVA targeting an Inner | ||
1294 | Shareable memory region may fail to proceed up to either the | ||
1295 | Point of Coherency or to the Point of Unification of the | ||
1296 | system. This workaround adds a DSB instruction before the | ||
1297 | relevant cache maintenance functions and sets a specific bit | ||
1298 | in the diagnostic control register of the SCU. | ||
1299 | |||
1274 | endmenu | 1300 | endmenu |
1275 | 1301 | ||
1276 | source "arch/arm/common/Kconfig" | 1302 | source "arch/arm/common/Kconfig" |