diff options
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r-- | arch/arm/Kconfig | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 26d45e5b636..166efa2a19c 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig | |||
@@ -1177,6 +1177,31 @@ config ARM_ERRATA_743622 | |||
1177 | visible impact on the overall performance or power consumption of the | 1177 | visible impact on the overall performance or power consumption of the |
1178 | processor. | 1178 | processor. |
1179 | 1179 | ||
1180 | config ARM_ERRATA_751472 | ||
1181 | bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation" | ||
1182 | depends on CPU_V7 && SMP | ||
1183 | help | ||
1184 | This option enables the workaround for the 751472 Cortex-A9 (prior | ||
1185 | to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the | ||
1186 | completion of a following broadcasted operation if the second | ||
1187 | operation is received by a CPU before the ICIALLUIS has completed, | ||
1188 | potentially leading to corrupted entries in the cache or TLB. | ||
1189 | |||
1190 | config ARM_ERRATA_753970 | ||
1191 | bool "ARM errata: cache sync operation may be faulty" | ||
1192 | depends on CACHE_PL310 | ||
1193 | help | ||
1194 | This option enables the workaround for the 753970 PL310 (r3p0) erratum. | ||
1195 | |||
1196 | Under some condition the effect of cache sync operation on | ||
1197 | the store buffer still remains when the operation completes. | ||
1198 | This means that the store buffer is always asked to drain and | ||
1199 | this prevents it from merging any further writes. The workaround | ||
1200 | is to replace the normal offset of cache sync operation (0x730) | ||
1201 | by another offset targeting an unmapped PL310 register 0x740. | ||
1202 | This has the same effect as the cache sync operation: store buffer | ||
1203 | drain and waiting for all buffers empty. | ||
1204 | |||
1180 | endmenu | 1205 | endmenu |
1181 | 1206 | ||
1182 | source "arch/arm/common/Kconfig" | 1207 | source "arch/arm/common/Kconfig" |