diff options
Diffstat (limited to 'src/sbefw/core/sbeutil.C')
| -rw-r--r-- | src/sbefw/core/sbeutil.C | 62 |
1 files changed, 61 insertions, 1 deletions
diff --git a/src/sbefw/core/sbeutil.C b/src/sbefw/core/sbeutil.C index bc53e7a4..c0b291e2 100644 --- a/src/sbefw/core/sbeutil.C +++ b/src/sbefw/core/sbeutil.C @@ -5,7 +5,8 @@ /* */ /* OpenPOWER sbe Project */ /* */ -/* Contributors Listed Below - COPYRIGHT 2016,2017 */ +/* Contributors Listed Below - COPYRIGHT 2016,2018 */ +/* [+] International Business Machines Corp. */ /* */ /* */ /* Licensed under the Apache License, Version 2.0 (the "License"); */ @@ -25,8 +26,17 @@ #include "fapi2.H" #include "sbetrace.H" #include "sbeglobals.H" + +#include "plat_hw_access.H" +#include "assert.h" + // Nest frequency array #include "p9_frequency_buckets.H" + +#define SBE_PERV_SB_CS_SCOM 0x00050008 +#define SBCS_VEC_1_CLEAR(sbcsreg) (sbcsreg & ~0x0004000000000000ull) +#define SBCS_VEC_1_GET(sbcsreg) (sbcsreg & 0x0004000000000000ull) + namespace SBE { bool isSimics() __attribute__((alias("__isSimicsRunning"))); @@ -58,5 +68,55 @@ namespace SBE pk_timebase_freq_set(SBE_GLOBAL->sbefreq); #undef SBE_FUNC } + + bool isHreset(void) + { + #define SBE_FUNC "IS_HRESET" + using namespace fapi2; + bool isHreset = false; + uint64_t sbcsreg = 0; + ReturnCode rc = FAPI2_RC_SUCCESS; + plat_target_handle_t tgtHndl; + rc = getscom_abs_wrap (&tgtHndl, + SBE_PERV_SB_CS_SCOM, + &sbcsreg); + if (rc != FAPI2_RC_SUCCESS) + { + SBE_ERROR(SBE_FUNC" could not read sbcs register, halting."); + pk_halt(); + } + isHreset = SBCS_VEC_1_GET(sbcsreg); + SBE_INFO(SBE_FUNC" [%d]", isHreset); + return (isHreset); + #undef SBE_FUNC + } + + void clearHresetBit(void) + { + #define SBE_FUNC "CLEAR_HRESET_BIT" + using namespace fapi2; + // clear the hreset bit + uint64_t sbcsreg = 0; + plat_target_handle_t tgtHndl; + ReturnCode rc = getscom_abs_wrap (&tgtHndl, + SBE_PERV_SB_CS_SCOM, + &sbcsreg); + if (rc != FAPI2_RC_SUCCESS) + { + SBE_ERROR(SBE_FUNC" could not read sbcs register, halting."); + pk_halt(); + } + + sbcsreg = SBCS_VEC_1_CLEAR(sbcsreg); + rc = putscom_abs_wrap (&tgtHndl, + SBE_PERV_SB_CS_SCOM, + sbcsreg); + if (rc != FAPI2_RC_SUCCESS) + { + SBE_ERROR(SBE_FUNC" could not write sbcs register, halting."); + pk_halt(); + } + #undef SBE_FUNC + } } |
