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[v5,28/48] target/nios2: Implement CR_STATUS.RSIE

Message ID 20220310112725.570053-29-richard.henderson@linaro.org
State New
Headers show
Series target/nios2: Shadow register set, EIC and VIC | expand

Commit Message

Richard Henderson March 10, 2022, 11:27 a.m. UTC 
Without EIC, this bit is RES1.  So set the bit at reset,
and add it to the readonly fields of CR_STATUS.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/nios2/cpu.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/target/nios2/cpu.c b/target/nios2/cpu.c
index d491360973..64dc916ed2 100644
--- a/target/nios2/cpu.c
+++ b/target/nios2/cpu.c
@@ -56,9 +56,9 @@  static void nios2_cpu_reset(DeviceState *dev)
     memset(env->ctrl, 0, sizeof(env->ctrl));
 #if defined(CONFIG_USER_ONLY)
     /* Start in user mode with interrupts enabled. */
-    env->ctrl[CR_STATUS] = CR_STATUS_U | CR_STATUS_PIE;
+    env->ctrl[CR_STATUS] = CR_STATUS_RSIE | CR_STATUS_U | CR_STATUS_PIE;
 #else
-    env->ctrl[CR_STATUS] = 0;
+    env->ctrl[CR_STATUS] = CR_STATUS_RSIE;
 #endif
 
     env->regs[R_ZERO] = 0;
@@ -109,6 +109,7 @@  static void nios2_cpu_initfn(Object *obj)
     WR_REG(CR_BADADDR);
 
     /* TODO: These control registers are not present with the EIC. */
+    RO_FIELD(CR_STATUS, RSIE);
     WR_REG(CR_IENABLE);
     RO_REG(CR_IPENDING);