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diff --git a/sys/arm64/arm64/identcpu.c b/sys/arm64/arm64/identcpu.c
--- a/sys/arm64/arm64/identcpu.c
+++ b/sys/arm64/arm64/identcpu.c
@@ -48,6 +48,8 @@
#include <machine/md_var.h>
#include <machine/undefined.h>
+#include "gicv5reg.h"
+
static MALLOC_DEFINE(M_IDENTCPU, "CPU ID", "arm64 CPU identification memory");
struct cpu_desc;
@@ -161,6 +163,7 @@
uint64_t clidr;
uint32_t ccsidr[MAX_CACHES][2]; /* 2 possible types. */
bool have_sve;
+ uint64_t icc_idr0;
};
static struct cpu_desc cpu_desc0;
@@ -1886,9 +1889,14 @@
MRS_FIELD_END,
};
+static const struct mrs_field_value id_aa64pfr2_gcie[] = {
+ MRS_FIELD_VALUE_NONE_IMPL(ID_AA64PFR2, GCIE, NONE, IMPL),
+ MRS_FIELD_VALUE_END,
+};
/* ID_AA64PFR2_EL1 */
static const struct mrs_field id_aa64pfr2_fields[] = {
+ MRS_FIELD(ID_AA64PFR2, GCIE, false, MRS_LOWER, 0, id_aa64pfr2_gcie),
MRS_FIELD_END,
};
@@ -2013,6 +2021,16 @@
MRS_FIELD_END,
};
+static const struct mrs_field_value icc_idr0_gcie_legacy[] = {
+ MRS_FIELD_VALUE_NONE_IMPL(ICC_IDR0, GCIE_LEGACY, NONE, IMPL),
+ MRS_FIELD_VALUE_END,
+};
+
+static const struct mrs_field icc_idr0_fields[] = {
+ MRS_FIELD(ICC_IDR0, GCIE_LEGACY, false, MRS_LOWER, 0,
+ icc_idr0_gcie_legacy),
+ MRS_FIELD_END,
+};
#ifdef COMPAT_FREEBSD32
/* ID_ISAR5_EL1 */
@@ -2268,6 +2286,8 @@
USER_REG(CTR_EL0, ctr, true),
+ USER_REG(ICC_IDR0_EL1, icc_idr0, true),
+
#ifdef COMPAT_FREEBSD32
USER_REG(ID_ISAR5_EL1, id_isar5, false),
@@ -3387,6 +3407,9 @@
desc->ccsidr[i][j] = READ_SPECIALREG(ccsidr_el1);
}
+ if (ID_AA64PFR2_GCIE_VAL(desc->id_aa64pfr2) != ID_AA64PFR2_GCIE_NONE)
+ desc->icc_idr0 = READ_SPECIALREG(ICC_IDR0_EL1);
+
#ifdef COMPAT_FREEBSD32
/* Only read aarch32 SRs if EL0-32 is available */
if (ID_AA64PFR0_EL0_VAL(desc->id_aa64pfr0) == ID_AA64PFR0_EL0_64_32) {

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