diff options
Diffstat (limited to 'src/arch/riscv')
| -rw-r--r-- | src/arch/riscv/virtual_memory.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/arch/riscv/virtual_memory.c b/src/arch/riscv/virtual_memory.c index 3bee86865d..5b35e811d9 100644 --- a/src/arch/riscv/virtual_memory.c +++ b/src/arch/riscv/virtual_memory.c @@ -14,6 +14,7 @@ * GNU General Public License for more details. */ +#include <arch/cpu.h> #include <arch/encoding.h> #include <stdint.h> #include <vm.h> @@ -52,11 +53,12 @@ void mstatus_init(void) // all other supervisor interrupts. set_csr(mie, MIP_MTIP | MIP_STIP | MIP_SSIP); - // Delegate supervisor timer and other interrupts - // to supervisor mode. - set_csr(mideleg, MIP_STIP | MIP_SSIP); - - set_csr(medeleg, delegate); + // Delegate supervisor timer and other interrupts to supervisor mode, + // if supervisor mode is supported. + if (supports_extension('S')) { + set_csr(mideleg, MIP_STIP | MIP_SSIP); + set_csr(medeleg, delegate); + } // Enable all user/supervisor-mode counters using // v1.10 register addresses. |