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-rw-r--r--arch/arm64/kernel/cpufeature.c92
1 files changed, 53 insertions, 39 deletions
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index fdf8f045929f..e8d7b1e5d30c 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -431,45 +431,6 @@ static void __init init_cpu_ftr_reg(u32 sys_reg, u64 new)
reg->strict_mask = strict_mask;
}
-void __init init_cpu_features(struct cpuinfo_arm64 *info)
-{
- /* Before we start using the tables, make sure it is sorted */
- sort_ftr_regs();
-
- init_cpu_ftr_reg(SYS_CTR_EL0, info->reg_ctr);
- init_cpu_ftr_reg(SYS_DCZID_EL0, info->reg_dczid);
- init_cpu_ftr_reg(SYS_CNTFRQ_EL0, info->reg_cntfrq);
- init_cpu_ftr_reg(SYS_ID_AA64DFR0_EL1, info->reg_id_aa64dfr0);
- init_cpu_ftr_reg(SYS_ID_AA64DFR1_EL1, info->reg_id_aa64dfr1);
- init_cpu_ftr_reg(SYS_ID_AA64ISAR0_EL1, info->reg_id_aa64isar0);
- init_cpu_ftr_reg(SYS_ID_AA64ISAR1_EL1, info->reg_id_aa64isar1);
- init_cpu_ftr_reg(SYS_ID_AA64MMFR0_EL1, info->reg_id_aa64mmfr0);
- init_cpu_ftr_reg(SYS_ID_AA64MMFR1_EL1, info->reg_id_aa64mmfr1);
- init_cpu_ftr_reg(SYS_ID_AA64MMFR2_EL1, info->reg_id_aa64mmfr2);
- init_cpu_ftr_reg(SYS_ID_AA64PFR0_EL1, info->reg_id_aa64pfr0);
- init_cpu_ftr_reg(SYS_ID_AA64PFR1_EL1, info->reg_id_aa64pfr1);
-
- if (id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0)) {
- init_cpu_ftr_reg(SYS_ID_DFR0_EL1, info->reg_id_dfr0);
- init_cpu_ftr_reg(SYS_ID_ISAR0_EL1, info->reg_id_isar0);
- init_cpu_ftr_reg(SYS_ID_ISAR1_EL1, info->reg_id_isar1);
- init_cpu_ftr_reg(SYS_ID_ISAR2_EL1, info->reg_id_isar2);
- init_cpu_ftr_reg(SYS_ID_ISAR3_EL1, info->reg_id_isar3);
- init_cpu_ftr_reg(SYS_ID_ISAR4_EL1, info->reg_id_isar4);
- init_cpu_ftr_reg(SYS_ID_ISAR5_EL1, info->reg_id_isar5);
- init_cpu_ftr_reg(SYS_ID_MMFR0_EL1, info->reg_id_mmfr0);
- init_cpu_ftr_reg(SYS_ID_MMFR1_EL1, info->reg_id_mmfr1);
- init_cpu_ftr_reg(SYS_ID_MMFR2_EL1, info->reg_id_mmfr2);
- init_cpu_ftr_reg(SYS_ID_MMFR3_EL1, info->reg_id_mmfr3);
- init_cpu_ftr_reg(SYS_ID_PFR0_EL1, info->reg_id_pfr0);
- init_cpu_ftr_reg(SYS_ID_PFR1_EL1, info->reg_id_pfr1);
- init_cpu_ftr_reg(SYS_MVFR0_EL1, info->reg_mvfr0);
- init_cpu_ftr_reg(SYS_MVFR1_EL1, info->reg_mvfr1);
- init_cpu_ftr_reg(SYS_MVFR2_EL1, info->reg_mvfr2);
- }
-
-}
-
static void update_cpu_ftr_reg(struct arm64_ftr_reg *reg, u64 new)
{
const struct arm64_ftr_bits *ftrp;
@@ -755,6 +716,18 @@ static bool has_no_fpsimd(const struct arm64_cpu_capabilities *entry, int __unus
ID_AA64PFR0_FP_SHIFT) < 0;
}
+static const struct arm64_cpu_capabilities arm64_early_features[] = {
+ {
+ .desc = "GIC system register CPU interface",
+ .capability = ARM64_HAS_SYSREG_GIC_CPUIF,
+ .matches = has_useable_gicv3_cpuif,
+ .sys_reg = SYS_ID_AA64PFR0_EL1,
+ .field_pos = ID_AA64PFR0_GIC_SHIFT,
+ .min_field_value = 1,
+ },
+ {}
+};
+
static const struct arm64_cpu_capabilities arm64_features[] = {
{
.desc = "GIC system register CPU interface",
@@ -1062,6 +1035,47 @@ void check_local_cpu_capabilities(void)
verify_local_cpu_capabilities();
}
+void __init init_cpu_features(struct cpuinfo_arm64 *info)
+{
+ /* Before we start using the tables, make sure it is sorted */
+ sort_ftr_regs();
+
+ init_cpu_ftr_reg(SYS_CTR_EL0, info->reg_ctr);
+ init_cpu_ftr_reg(SYS_DCZID_EL0, info->reg_dczid);
+ init_cpu_ftr_reg(SYS_CNTFRQ_EL0, info->reg_cntfrq);
+ init_cpu_ftr_reg(SYS_ID_AA64DFR0_EL1, info->reg_id_aa64dfr0);
+ init_cpu_ftr_reg(SYS_ID_AA64DFR1_EL1, info->reg_id_aa64dfr1);
+ init_cpu_ftr_reg(SYS_ID_AA64ISAR0_EL1, info->reg_id_aa64isar0);
+ init_cpu_ftr_reg(SYS_ID_AA64ISAR1_EL1, info->reg_id_aa64isar1);
+ init_cpu_ftr_reg(SYS_ID_AA64MMFR0_EL1, info->reg_id_aa64mmfr0);
+ init_cpu_ftr_reg(SYS_ID_AA64MMFR1_EL1, info->reg_id_aa64mmfr1);
+ init_cpu_ftr_reg(SYS_ID_AA64MMFR2_EL1, info->reg_id_aa64mmfr2);
+ init_cpu_ftr_reg(SYS_ID_AA64PFR0_EL1, info->reg_id_aa64pfr0);
+ init_cpu_ftr_reg(SYS_ID_AA64PFR1_EL1, info->reg_id_aa64pfr1);
+
+ if (id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0)) {
+ init_cpu_ftr_reg(SYS_ID_DFR0_EL1, info->reg_id_dfr0);
+ init_cpu_ftr_reg(SYS_ID_ISAR0_EL1, info->reg_id_isar0);
+ init_cpu_ftr_reg(SYS_ID_ISAR1_EL1, info->reg_id_isar1);
+ init_cpu_ftr_reg(SYS_ID_ISAR2_EL1, info->reg_id_isar2);
+ init_cpu_ftr_reg(SYS_ID_ISAR3_EL1, info->reg_id_isar3);
+ init_cpu_ftr_reg(SYS_ID_ISAR4_EL1, info->reg_id_isar4);
+ init_cpu_ftr_reg(SYS_ID_ISAR5_EL1, info->reg_id_isar5);
+ init_cpu_ftr_reg(SYS_ID_MMFR0_EL1, info->reg_id_mmfr0);
+ init_cpu_ftr_reg(SYS_ID_MMFR1_EL1, info->reg_id_mmfr1);
+ init_cpu_ftr_reg(SYS_ID_MMFR2_EL1, info->reg_id_mmfr2);
+ init_cpu_ftr_reg(SYS_ID_MMFR3_EL1, info->reg_id_mmfr3);
+ init_cpu_ftr_reg(SYS_ID_PFR0_EL1, info->reg_id_pfr0);
+ init_cpu_ftr_reg(SYS_ID_PFR1_EL1, info->reg_id_pfr1);
+ init_cpu_ftr_reg(SYS_MVFR0_EL1, info->reg_mvfr0);
+ init_cpu_ftr_reg(SYS_MVFR1_EL1, info->reg_mvfr1);
+ init_cpu_ftr_reg(SYS_MVFR2_EL1, info->reg_mvfr2);
+ }
+
+ update_cpu_capabilities(arm64_early_features,
+ "early detected feature:");
+}
+
static void __init setup_feature_capabilities(void)
{
update_cpu_capabilities(arm64_features, "detected feature:");