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| author | Brian Bakke <bbakke@us.ibm.com> | 2017-11-17 10:51:24 -0600 |
|---|---|---|
| committer | Daniel M. Crowell <dcrowell@us.ibm.com> | 2017-11-30 09:33:28 -0500 |
| commit | 3a88f18bc7386abaaceedca9b327806d85734f67 (patch) | |
| tree | c4351bac24ee26d90c977a0bd1d766217f8817e2 /src/kernel | |
| parent | c5c12e6e0ae9160e15f7ff07d123cb9033103947 (diff) | |
| download | talos-hostboot-3a88f18bc7386abaaceedca9b327806d85734f67.tar.gz talos-hostboot-3a88f18bc7386abaaceedca9b327806d85734f67.zip | |
Enable ATTN prior to OPAL handoff
Change-Id: Iadfded90c09b149948348ee462ab34f9c2431982
RTC: 182134
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/49865
Reviewed-by: Matt Derksen <mderkse1@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Diffstat (limited to 'src/kernel')
| -rw-r--r-- | src/kernel/syscall.C | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/kernel/syscall.C b/src/kernel/syscall.C index 5245705d4..c50bae001 100644 --- a/src/kernel/syscall.C +++ b/src/kernel/syscall.C @@ -119,6 +119,7 @@ namespace Systemcalls void CpuDDLevel(task_t *t); void CpuStartCore(task_t *t); void CpuSprValue(task_t *t); + void CpuSprSet(task_t *t); void CpuNap(task_t *t); void CpuWinkle(task_t *t); void MmAllocBlock(task_t *t); @@ -160,6 +161,7 @@ namespace Systemcalls &CpuDDLevel, // MISC_CPUDDLEVEL &CpuStartCore, // MISC_CPUSTARTCORE &CpuSprValue, // MISC_CPUSPRVALUE + &CpuSprSet, // MISC_CPUSPRSET &CpuNap, // MISC_CPUNAP &CpuWinkle, // MISC_CPUWINKLE @@ -745,6 +747,26 @@ namespace Systemcalls } }; + /** Set SPR values. */ + void CpuSprSet(task_t *t) + { + uint64_t spr = TASK_GETARG0(t); + uint64_t newValue = TASK_GETARG1(t); + + switch (spr) + { + case CPU_SPR_HID: + setHID( newValue ); + TASK_SETRTN(t, true); + break; + + default: + // unsupported SPR for write + TASK_SETRTN(t, false); + break; + } + }; + /** * Allow a task to request privilege escalation to execute the 'nap' * instruction. |
