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-rw-r--r--arch/arm/Kconfig25
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
1180config 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
1190config 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
1180endmenu 1205endmenu
1181 1206
1182source "arch/arm/common/Kconfig" 1207source "arch/arm/common/Kconfig"