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/*
* @file: ppe/sbe/sbefw/sberegaccess.C
*
* @brief This file contains interfaces to get/set FW flags either in the
* scratch registers and/or the FW attributes.
*/
#include "sberegaccess.H"
#include "sbetrace.H"
#include "fapi2.H"
#include <ppe42_scom.h>
using namespace fapi2;
/**
* @brief Initizlize the class
*
* @return An RC indicating success/failure
*/
uint32_t SbeRegAccess::init()
{
#define SBE_FUNC "SbeRegAccess::SbeRegAccess "
static bool l_initDone = false;
uint32_t l_rc = 0;
uint64_t l_mbx8 = 0;
do
{
if(l_initDone)
{
break;
}
Target<TARGET_TYPE_PROC_CHIP> l_chip = plat_getChipTarget();
// Read SBE messaging register into iv_messagingReg
l_rc = getscom_abs(SBE_MESSAGING_REGISTER_ADDR, &iv_messagingReg);
if(PCB_ERROR_NONE != l_rc)
{
SBE_ERROR(SBE_FUNC"Failed reading sbe messaging reg., RC: 0x%08X. ",
l_rc);
break;
}
// Read Mailbox register 8 to check if the mailbox registers 3 and 6 are
// valid
l_rc = getscom_abs(SBE_MBX8_REGISTER_ADDR, &l_mbx8);
if(PCB_ERROR_NONE != l_rc)
{
SBE_ERROR(SBE_FUNC"Failed reading mailbox reg 7, RC: 0x%08X. ",
l_rc);
break;
}
if(l_mbx8 & SBE_MBX8_MBX3_VALID_MASK)
{
// Read MBX3
l_rc = getscom_abs(SBE_MBX3_REGISTER_ADDR, &iv_mbx3);
if(PCB_ERROR_NONE != l_rc)
{
SBE_ERROR(SBE_FUNC"Failed reading mailbox reg 3, RC: 0x%08X. ",
l_rc);
break;
}
}
else
{
// Need to read the values off the attributes
// TODO: via RTC 150291 : Needs to be changed when all FW control
// attributes are to be combined into one
uint8_t l_attr = 0;
FAPI_ATTR_GET(ATTR_ISTEP_MODE, l_chip, l_attr);
iv_istepMode = l_attr;
FAPI_ATTR_GET(ATTR_SBE_RUNTIME_MODE, l_chip, l_attr);
iv_sbeDestRuntime = l_attr;
FAPI_ATTR_GET(ATTR_IS_SP_MODE, l_chip, l_attr);
iv_fspAttached = l_attr;
FAPI_ATTR_GET(ATTR_SBE_FFDC_ENABLE, l_chip, l_attr);
iv_collectFFDC = l_attr;
FAPI_ATTR_GET(ATTR_SBE_INTERNAL_FFDC_ENABLE, l_chip, l_attr);
iv_sendFFDC = l_attr;
}
if(l_mbx8 & SBE_MBX8_MBX6_VALID_MASK)
{
// Read MBX6
l_rc = getscom_abs(SBE_MBX6_REGISTER_ADDR, &iv_mbx6);
if(PCB_ERROR_NONE != l_rc)
{
SBE_ERROR(SBE_FUNC"Failed reading mailbox reg 6, RC: 0x%08X. "
l_rc);
break;
}
}
// TODO via RTC:150291 Need to get the exact attribute name that
// provides the master/slave role
} while(false);
SBE_DEBUG(SBE_FUNC"Read mailbox registers: mbx8: 0x%08X, mbx3: 0x%08X, "
"mbx6: 0x%08X", (uint32_t)(l_mbx8 >> 32),
(uint32_t)(iv_mbx3 >> 32), (uint32_t)(iv_mbx6 >> 32));
l_initDone = true;
return l_rc;
#undef SBE_FUNC
}
/**
* @brief Update the SBE states into the SBE messaging register. The
* function does a read-modify-write, so any bits other than the state
* bits are preserved. The current state of the register is set to
* i_state, whereas the old current state is copied to previous state
*
* @param [in] i_state The current SBE state
*
* @return RC indicating success/failure.
*
*/
uint32_t SbeRegAccess::updateSbeState(const sbeState &i_state)
{
#define SBE_FUNC "SbeRegAccess::updateSbeState "
uint32_t l_rc = 0;
iv_prevState = iv_currState;
iv_currState = i_state;
l_rc = putscom_abs(SBE_MESSAGING_REGISTER_ADDR, iv_messagingReg);
if(PCB_ERROR_NONE != l_rc)
{
SBE_ERROR(SBE_FUNC"Failed to update state to messaging "
"register. RC: 0x%08X", l_rc);
}
return l_rc;
#undef SBE_FUNC
}
/**
* @brief Update the SBE IPL steps into the SBE messaging register. The
* function does a read-modify-write, so any bits other than the IPL
* steps are retianed
*
* @param [in] i_major IPL major step number
* @param [in] i_minor IPL minor step number
*
* @return RC indicating success/failure.
*
*/
uint32_t SbeRegAccess::updateSbeStep(const uint8_t i_major,
const uint8_t i_minor)
{
#define SBE_FUNC "SbeRegAccess::updateSbeStep "
uint32_t l_rc = 0;
iv_majorStep = i_major;
iv_minorStep = i_minor;
l_rc = putscom_abs(SBE_MESSAGING_REGISTER_ADDR, iv_messagingReg);
if(l_rc)
{
SBE_ERROR(SBE_FUNC"Failed to update SBE step to messaging "
"register. RC: 0x%08X", l_rc);
}
return l_rc;
#undef SBE_FUNC
}
/**
* @brief Set the SBE ready bit into the SBE messaging register
* (meaning that SBE control loop is initialized) The function does a
* read-modify-write, so any bits other than the SBE ready bit remain
* unchanged.
*
* @return RC indicating success/failure.
*
*/
uint32_t SbeRegAccess::setSbeReady()
{
#define SBE_FUNC "SbeRegAccess::setSbeReady "
uint32_t l_rc = 0;
iv_sbeBooted = true;
l_rc = putscom_abs(SBE_MESSAGING_REGISTER_ADDR, iv_messagingReg);
if(l_rc)
{
SBE_ERROR(SBE_FUNC"Failed to update SBE ready state to "
"messaging register. RC: 0x%08X", l_rc);
}
return l_rc;
#undef SBE_FUNC
}
/**
* @brief Set the MPIPL mode bit into the mailbox scratch reg. 3
* The function does a read-modify-write, so any bits other than the
* SBE ready bit remain unchanged.
*
* @param i_set [in] Whether to set or clear the MPIPL flag
*
* @return RC indicating success/failure.
*
*/
uint32_t SbeRegAccess::setMpIplMode(const bool i_set)
{
#define SBE_FUNC "SbeRegAccess::setMpIplMode"
uint32_t l_rc = 0;
uint8_t l_set = i_set;
iv_mpiplMode = i_set;
FAPI_ATTR_SET(ATTR_IS_MPIPL, Target<TARGET_TYPE_SYSTEM>(), l_set);
l_rc = putscom_abs(SBE_MBX3_REGISTER_ADDR, iv_mbx3);
if(l_rc)
{
SBE_ERROR(SBE_FUNC"Failed to set/clear MPIPL flag in "
"mbx reg. 3. RC: 0x%08X", l_rc);
}
return l_rc;
#undef SBE_FUNC
}
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