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[Qemu-devel] [PATCH v2 4/9] target/openrisc: add numcores and coreid sup
From: |
Stafford Horne |
Subject: |
[Qemu-devel] [PATCH v2 4/9] target/openrisc: add numcores and coreid support |
Date: |
Mon, 24 Apr 2017 07:40:52 +0900 |
These are used to identify the processor in SMP system. Their
definition has been defined in verilog cores but it not yet part of the
spec but it will be soon.
The proposal for this is available:
https://openrisc.io/proposals/core-identifier-and-number-of-cores
Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: Stafford Horne <address@hidden>
---
target/openrisc/sys_helper.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/target/openrisc/sys_helper.c b/target/openrisc/sys_helper.c
index 6ba8162..e13666b 100644
--- a/target/openrisc/sys_helper.c
+++ b/target/openrisc/sys_helper.c
@@ -233,6 +233,12 @@ target_ulong HELPER(mfspr)(CPUOpenRISCState *env,
case TO_SPR(0, 64): /* ESR */
return env->esr;
+ case TO_SPR(0, 128): /* COREID */
+ return 0;
+
+ case TO_SPR(0, 129): /* NUMCORES */
+ return 1;
+
case TO_SPR(1, 512) ... TO_SPR(1, 512+DTLB_SIZE-1): /* DTLBW0MR 0-127 */
idx = spr - TO_SPR(1, 512);
return env->tlb->dtlb[0][idx].mr;
--
2.9.3
- [Qemu-devel] [PATCH v2 0/9] Openrisc misc features / fixes, Stafford Horne, 2017/04/23
- [Qemu-devel] [PATCH v2 1/9] target/openrisc: Implement EVBAR register, Stafford Horne, 2017/04/23
- [Qemu-devel] [PATCH v2 2/9] target/openrisc: Implement EPH bit, Stafford Horne, 2017/04/23
- [Qemu-devel] [PATCH v2 3/9] target/openrisc: Fixes for memory debugging, Stafford Horne, 2017/04/23
- [Qemu-devel] [PATCH v2 4/9] target/openrisc: add numcores and coreid support,
Stafford Horne <=
- [Qemu-devel] [PATCH v2 5/9] migration: Add VMSTATE_UINTTL_2DARRAY(), Stafford Horne, 2017/04/23
- [Qemu-devel] [PATCH v2 6/9] target/openrisc: implement shadow registers, Stafford Horne, 2017/04/23
- [Qemu-devel] [PATCH v2 7/9] migration: Add VMSTATE_STRUCT_2DARRAY(), Stafford Horne, 2017/04/23
- [Qemu-devel] [PATCH v2 8/9] target/openrisc: Implement full vmstate serialization, Stafford Horne, 2017/04/23
- [Qemu-devel] [PATCH v2 9/9] target/openrisc: Remove duplicate features property, Stafford Horne, 2017/04/23
- Re: [Qemu-devel] [PATCH v2 0/9] Openrisc misc features / fixes, no-reply, 2017/04/23