diff options
Diffstat (limited to 'arch/riscv/errata')
| -rw-r--r-- | arch/riscv/errata/thead/errata.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/riscv/errata/thead/errata.c b/arch/riscv/errata/thead/errata.c index 21546937db39..fac5742d1c1e 100644 --- a/arch/riscv/errata/thead/errata.c +++ b/arch/riscv/errata/thead/errata.c @@ -47,6 +47,22 @@ static bool errata_probe_cmo(unsigned int stage, return true; } +static bool errata_probe_pmu(unsigned int stage, + unsigned long arch_id, unsigned long impid) +{ + if (!IS_ENABLED(CONFIG_ERRATA_THEAD_PMU)) + return false; + + /* target-c9xx cores report arch_id and impid as 0 */ + if (arch_id != 0 || impid != 0) + return false; + + if (stage == RISCV_ALTERNATIVES_EARLY_BOOT) + return false; + + return true; +} + static u32 thead_errata_probe(unsigned int stage, unsigned long archid, unsigned long impid) { @@ -58,6 +74,9 @@ static u32 thead_errata_probe(unsigned int stage, if (errata_probe_cmo(stage, archid, impid)) cpu_req_errata |= BIT(ERRATA_THEAD_CMO); + if (errata_probe_pmu(stage, archid, impid)) + cpu_req_errata |= BIT(ERRATA_THEAD_PMU); + return cpu_req_errata; } |