diff options
Diffstat (limited to 'lib/cpus/aarch32/cortex_a9.S')
| -rw-r--r-- | lib/cpus/aarch32/cortex_a9.S | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/lib/cpus/aarch32/cortex_a9.S b/lib/cpus/aarch32/cortex_a9.S index 4f30f84a..1fb10b20 100644 --- a/lib/cpus/aarch32/cortex_a9.S +++ b/lib/cpus/aarch32/cortex_a9.S @@ -1,5 +1,5 @@ /* - * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -35,7 +35,43 @@ func cortex_a9_enable_smp bx lr endfunc cortex_a9_enable_smp +func check_errata_cve_2017_5715 +#if WORKAROUND_CVE_2017_5715 + mov r0, #ERRATA_APPLIES +#else + mov r0, #ERRATA_MISSING +#endif + bx lr +endfunc check_errata_cve_2017_5715 + +#if REPORT_ERRATA +/* + * Errata printing function for Cortex A9. Must follow AAPCS. + */ +func cortex_a9_errata_report + push {r12, lr} + + bl cpu_get_rev_var + mov r4, r0 + + /* + * Report all errata. The revision-variant information is passed to + * checking functions of each errata. + */ + report_errata WORKAROUND_CVE_2017_5715, cortex_a9, cve_2017_5715 + + pop {r12, lr} + bx lr +endfunc cortex_a9_errata_report +#endif + func cortex_a9_reset_func +#if IMAGE_BL32 && WORKAROUND_CVE_2017_5715 + ldr r0, =workaround_bpiall_runtime_exceptions + stcopr r0, VBAR + stcopr r0, MVBAR + /* isb will be applied in the course of the reset func */ +#endif b cortex_a9_enable_smp endfunc cortex_a9_reset_func |