diff options
| -rw-r--r-- | arch/arm/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/mm/proc-v7.S | 4 |
2 files changed, 2 insertions, 4 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 2456bad..f9b212e 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1179,7 +1179,7 @@ config ARM_ERRATA_743622 depends on CPU_V7 help This option enables the workaround for the 743622 Cortex-A9 - (r2p0..r2p2) erratum. Under very rare conditions, a faulty + (r2p*) erratum. Under very rare conditions, a faulty optimisation in the Cortex-A9 Store Buffer may lead to data corruption. This workaround sets a specific bit in the diagnostic register of the Cortex-A9 which disables the Store Buffer diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index b6ba103..7e47888 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -344,9 +344,7 @@ __v7_setup: mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register #endif #ifdef CONFIG_ARM_ERRATA_743622 - teq r6, #0x20 @ present in r2p0 - teqne r6, #0x21 @ present in r2p1 - teqne r6, #0x22 @ present in r2p2 + teq r5, #0x00200000 @ only present in r2p* mrceq p15, 0, r10, c15, c0, 1 @ read diagnostic register orreq r10, r10, #1 << 6 @ set bit #6 mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register |