[Skiboot] [PATCH] Self Save: Fixed bugs pertaining to SPR self save.
Akshay Adiga
akshay.adiga at linux.vnet.ibm.com
Mon Apr 22 19:58:10 AEST 2019
From: Prem Shanker Jha <premjha2 at in.ibm.com>
Commit fixes some issues with code found during integration test
- replacement of addi with xor instruction during self save API.
- fixing instruction generation for MFMSR during self save
- data struct updates in STOP API
- error RC updates for hcode image build
- HOMER parser updates.
- removed self save support for URMOR and HRMOR
- code changes for compilation with OPAL
- populating CME Image header with unsecure HOMER address.
Key_Cronus_Test=PM_REGRESS
Change-Id: I7cedcc466267c4245255d8d75c01ed695e316720
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/66580
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot at us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot at us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot at us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot at us.ibm.com>
Tested-by: Cronus HW CI <cronushw-ci+hostboot at us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot at us.ibm.com>
Reviewed-by: Gregory S. Still <stillgs at us.ibm.com>
Reviewed-by: RAHUL BATRA <rbatra at us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer at us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/66587
Reviewed-by: Christian R. Geddes <crgeddes at us.ibm.com>
Signed-off-by: Akshay Adiga <akshay.adiga at linux.vnet.ibm.com>
---
libpore/p9_cpu_reg_restore_instruction.H | 1 +
libpore/p9_stop_api.C | 72 ++++++++++++++++--------
libpore/p9_stop_api.H | 2 -
libpore/p9_stop_data_struct.H | 4 +-
libpore/p9_stop_util.H | 7 ++-
5 files changed, 56 insertions(+), 30 deletions(-)
diff --git a/libpore/p9_cpu_reg_restore_instruction.H b/libpore/p9_cpu_reg_restore_instruction.H
index dd4358a8..27603b23 100644
--- a/libpore/p9_cpu_reg_restore_instruction.H
+++ b/libpore/p9_cpu_reg_restore_instruction.H
@@ -68,6 +68,7 @@ enum
MFSPR_CONST = 339,
BLR_INST = 0x4e800020,
MTSPR_BASE_OPCODE = 0x7c0003a6,
+ MFSPR_BASE_OPCODE = 0x7c0002a6,
ATTN_OPCODE = 0x00000200,
OPCODE_18 = 18,
SELF_SAVE_FUNC_ADD = 0x2300,
diff --git a/libpore/p9_stop_api.C b/libpore/p9_stop_api.C
index 33aaf788..f41086b4 100644
--- a/libpore/p9_stop_api.C
+++ b/libpore/p9_stop_api.C
@@ -54,26 +54,26 @@ namespace stopImageSection
const StopSprReg_t g_sprRegister[] =
{
- { P9_STOP_SPR_CIABR, true, 0 },
- { P9_STOP_SPR_DAWR, true, 1 },
- { P9_STOP_SPR_DAWRX, true, 2 },
- { P9_STOP_SPR_HSPRG0, true, 3 },
- { P9_STOP_SPR_LDBAR, true, 4, },
- { P9_STOP_SPR_LPCR, true, 5 },
- { P9_STOP_SPR_PSSCR, true, 6 },
- { P9_STOP_SPR_MSR, true, 7 },
- { P9_STOP_SPR_HRMOR, false, 20 },
- { P9_STOP_SPR_HID, false, 21 },
- { P9_STOP_SPR_HMEER, false, 22 },
- { P9_STOP_SPR_PMCR, false, 23 },
- { P9_STOP_SPR_PTCR, false, 24 },
- { P9_STOP_SPR_SMFCTRL, true, 28 },
- { P9_STOP_SPR_USPRG0, true, 29 },
- { P9_STOP_SPR_USPRG1, true, 30 },
- { P9_STOP_SPR_URMOR, false, 31 },
+ { P9_STOP_SPR_CIABR, true, 0 },
+ { P9_STOP_SPR_DAWR, true, 1 },
+ { P9_STOP_SPR_DAWRX, true, 2 },
+ { P9_STOP_SPR_HSPRG0, true, 3 },
+ { P9_STOP_SPR_LDBAR, true, 4, },
+ { P9_STOP_SPR_LPCR, true, 5 },
+ { P9_STOP_SPR_PSSCR, true, 6 },
+ { P9_STOP_SPR_MSR, true, 7 },
+ { P9_STOP_SPR_HRMOR, false, 255 },
+ { P9_STOP_SPR_HID, false, 21 },
+ { P9_STOP_SPR_HMEER, false, 22 },
+ { P9_STOP_SPR_PMCR, false, 23 },
+ { P9_STOP_SPR_PTCR, false, 24 },
+ { P9_STOP_SPR_SMFCTRL, true, 28 },
+ { P9_STOP_SPR_USPRG0, true, 29 },
+ { P9_STOP_SPR_USPRG1, true, 30 },
+ { P9_STOP_SPR_URMOR, false, 255 },
};
-const uint32_t MAX_SPR_SUPPORTED = 17;
+const uint32_t MAX_SPR_SUPPORTED = 17;
const uint32_t LEGACY_CORE_SCOM_SUPPORTED = 15;
const uint32_t LEGACY_QUAD_SCOM_SUPPORTED = 63;
@@ -255,7 +255,7 @@ STATIC uint32_t getOriInstruction( const uint16_t i_Rs, const uint16_t i_Ra,
*/
STATIC uint32_t genKeyForSprLookup( const CpuReg_t i_regId )
{
- return getOriInstruction( 0, 0, (uint16_t) i_regId );
+ return getOriInstruction( 24, 0, (uint16_t) i_regId );
}
//-----------------------------------------------------------------------------
@@ -330,7 +330,7 @@ STATIC uint32_t getMtsprInstruction( const uint16_t i_Rs, const uint16_t i_Spr )
*/
STATIC uint32_t getMfmsrInstruction( const uint16_t i_Rt )
{
- uint32_t mfmsrInstOpcode = ((OPCODE_31 << 26) | (i_Rt << 21) | (MFMSR_CONST));
+ uint32_t mfmsrInstOpcode = ((OPCODE_31 << 26) | (i_Rt << 21) | ((MFMSR_CONST)<< 1));
return SWIZZLE_4_BYTE(mfmsrInstOpcode);
}
@@ -361,8 +361,13 @@ STATIC uint32_t getRldicrInstruction( const uint16_t i_Ra, const uint16_t i_Rs,
STATIC uint32_t getMfsprInstruction( const uint16_t i_Rt, const uint16_t i_sprNum )
{
- uint32_t mfsprInstOpcode = 0;
- mfsprInstOpcode = (( OPCODE_31 << 26 ) | ( i_Rt << 21 ) | ( i_sprNum << 11 ) | ( MFSPR_CONST << 1 ));
+ uint32_t mfsprInstOpcode = 0;
+ uint32_t temp = (( i_sprNum & 0x03FF ) << 11);
+ mfsprInstOpcode = (uint8_t)i_Rt << 21;
+ mfsprInstOpcode |= (( temp & 0x0000F800 ) << 5);
+ mfsprInstOpcode |= (( temp & 0x001F0000 ) >> 5);
+ mfsprInstOpcode |= MFSPR_BASE_OPCODE;
+
return SWIZZLE_4_BYTE(mfsprInstOpcode);
}
@@ -615,14 +620,14 @@ STATIC StopReturnCode_t getSprRegIndexAdjustment( const uint32_t i_saveMaskPos,
do
{
- if( (( i_saveMaskPos >= SPR_BIT_POS_8 ) && ( i_saveMaskPos <= SPR_BIT_POS_19 )) ||
+ if( (( i_saveMaskPos >= SPR_BIT_POS_8 ) && ( i_saveMaskPos <= SPR_BIT_POS_20 )) ||
(( i_saveMaskPos >= SPR_BIT_POS_25 ) && ( i_saveMaskPos <= SPR_BIT_POS_27 )) )
{
l_rc = STOP_SAVE_SPR_BIT_POS_RESERVE;
break;
}
- if( (i_saveMaskPos > SPR_BIT_POS_19) && (i_saveMaskPos < SPR_BIT_POS_25 ) )
+ if( (i_saveMaskPos > SPR_BIT_POS_20) && (i_saveMaskPos < SPR_BIT_POS_25) )
{
*i_sprAdjIndex = 12;
}
@@ -1411,6 +1416,7 @@ StopReturnCode_t p9_stop_save_cpureg_control( void* i_pImage,
uint32_t* l_pRestoreStart = NULL;
uint32_t* l_pSprSave = NULL;
void* l_pTempLoc = NULL;
+ uint32_t * l_pTempWord = NULL;
SmfHomerSection_t* l_pHomer = NULL;
uint8_t l_selfRestVer = 0;
@@ -1440,6 +1446,11 @@ StopReturnCode_t p9_stop_save_cpureg_control( void* i_pImage,
{
l_sprPos = g_sprRegister[l_sprIndex].iv_saveMaskPos;
+ if( l_sprPos > MAX_SPR_BIT_POS )
+ {
+ continue;
+ }
+
//Check if a given SPR needs to be self-saved each time on STOP entry
if( i_saveRegVector & ( TEST_BIT_PATTERN >> l_sprPos ) )
@@ -1493,6 +1504,19 @@ StopReturnCode_t p9_stop_save_cpureg_control( void* i_pImage,
//update specific instructions of self save region to enable saving for SPR
l_rc = updateSelfSaveEntry( l_pSprSave, g_sprRegister[l_sprIndex].iv_sprId );
+ if( l_rc )
+ {
+ MY_ERR( "Failed to update self save instructions for 0x%08x",
+ (uint32_t) g_sprRegister[l_sprIndex].iv_sprId );
+ }
+
+ if( l_pTempLoc )
+ {
+ l_pTempWord = (uint32_t *)l_pTempLoc;
+ l_pTempWord++;
+ *l_pTempWord = getXorInstruction( 0, 0, 0 );
+ }
+
}// end if( i_saveRegVector..)
}// end for
}
diff --git a/libpore/p9_stop_api.H b/libpore/p9_stop_api.H
index 17caedb3..ef0d9d1e 100644
--- a/libpore/p9_stop_api.H
+++ b/libpore/p9_stop_api.H
@@ -148,7 +148,6 @@ typedef enum
BIT_POS_LPCR = 5,
BIT_POS_PSSCR = 6,
BIT_POS_MSR = 7,
- BIT_POS_HRMOR = 20,
BIT_POS_HID = 21,
BIT_POS_HMEER = 22,
BIT_POS_PMCR = 23,
@@ -156,7 +155,6 @@ typedef enum
BIT_POS_SMFCTRL = 28,
BIT_POS_USPRG0 = 29,
BIT_POS_USPRG1 = 30,
- BIT_POS_URMOR = 31,
} SprBitPositionList_t;
diff --git a/libpore/p9_stop_data_struct.H b/libpore/p9_stop_data_struct.H
index 1e9721e0..4e73aab5 100644
--- a/libpore/p9_stop_data_struct.H
+++ b/libpore/p9_stop_data_struct.H
@@ -67,9 +67,9 @@ enum
SIZE_PER_SPR_RESTORE_INST = ((4 * sizeof(uint8_t)) / sizeof(uint32_t)),
MAX_THREAD_LEVEL_SPRS = 11,
MAX_CORE_LEVEL_SPRS = 6,
- MAX_SPR_BIT_POS = 31,
+ MAX_SPR_BIT_POS = 30,
SPR_BIT_POS_8 = 8,
- SPR_BIT_POS_19 = 19,
+ SPR_BIT_POS_20 = 20,
SPR_BIT_POS_25 = 25,
SPR_BIT_POS_27 = 27,
};
diff --git a/libpore/p9_stop_util.H b/libpore/p9_stop_util.H
index 3266fdef..79b4e959 100644
--- a/libpore/p9_stop_util.H
+++ b/libpore/p9_stop_util.H
@@ -5,7 +5,7 @@
/* */
/* OpenPOWER HostBoot Project */
/* */
-/* Contributors Listed Below - COPYRIGHT 2016,2017 */
+/* Contributors Listed Below - COPYRIGHT 2016,2018 */
/* [+] International Business Machines Corp. */
/* */
/* */
@@ -95,7 +95,10 @@ typedef struct
uint64_t cpmrMagicWord;
uint32_t buildDate;
uint32_t version;
- uint8_t reserve1[7];
+ uint8_t reserve1[4];
+ uint8_t selfRestoreVer;
+ uint8_t stopApiVer;
+ uint8_t urmorFix;
uint8_t fusedModeStatus;
uint32_t cmeImgOffset;
uint32_t cmeImgLength;
--
2.20.1
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