@@ -82,6 +82,20 @@ static int smode(CPURISCVState *env, int csrno)
return -!riscv_has_ext(env, RVS);
}
+static int hmode(CPURISCVState *env, int csrno)
+{
+ if (riscv_has_ext(env, RVS) &&
+ riscv_has_ext(env, RVH)) {
+ /* Hypervisor extension is supported */
+ if ((env->priv == PRV_S && !riscv_cpu_virt_enabled(env)) ||
+ env->priv == PRV_M) {
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
static int pmp(CPURISCVState *env, int csrno)
{
return -!riscv_feature(env, RISCV_FEATURE_PMP);
@@ -736,6 +750,55 @@ static int write_satp(CPURISCVState *env, int csrno, target_ulong val)
return 0;
}
+/* Hypervisor Extensions */
+static int read_hstatus(CPURISCVState *env, int csrno, target_ulong *val)
+{
+ *val = env->hstatus;
+ return 0;
+}
+
+static int write_hstatus(CPURISCVState *env, int csrno, target_ulong val)
+{
+ env->hstatus = val;
+ return 0;
+}
+
+static int read_hedeleg(CPURISCVState *env, int csrno, target_ulong *val)
+{
+ *val = env->hedeleg;
+ return 0;
+}
+
+static int write_hedeleg(CPURISCVState *env, int csrno, target_ulong val)
+{
+ env->hedeleg = val;
+ return 0;
+}
+
+static int read_hideleg(CPURISCVState *env, int csrno, target_ulong *val)
+{
+ *val = env->hideleg;
+ return 0;
+}
+
+static int write_hideleg(CPURISCVState *env, int csrno, target_ulong val)
+{
+ env->hideleg = val;
+ return 0;
+}
+
+static int read_hgatp(CPURISCVState *env, int csrno, target_ulong *val)
+{
+ *val = env->hgatp;
+ return 0;
+}
+
+static int write_hgatp(CPURISCVState *env, int csrno, target_ulong val)
+{
+ env->hgatp = val;
+ return 0;
+}
+
/* Physical Memory Protection */
static int read_pmpcfg(CPURISCVState *env, int csrno, target_ulong *val)
{
@@ -919,6 +982,11 @@ static riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = {
/* Supervisor Protection and Translation */
[CSR_SATP] = { smode, read_satp, write_satp },
+ [CSR_HSTATUS] = { hmode, read_hstatus, write_hstatus },
+ [CSR_HEDELEG] = { hmode, read_hedeleg, write_hedeleg },
+ [CSR_HIDELEG] = { hmode, read_hideleg, write_hideleg },
+ [CSR_HGATP] = { hmode, read_hgatp, write_hgatp },
+
/* Physical Memory Protection */
[CSR_PMPCFG0 ... CSR_PMPADDR9] = { pmp, read_pmpcfg, write_pmpcfg },
[CSR_PMPADDR0 ... CSR_PMPADDR15] = { pmp, read_pmpaddr, write_pmpaddr },
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> --- target/riscv/csr.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+)