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Change-Id: I800eb12f166b1af90ce0153e109630cc90c8b8e8 Original-Change-Id: I11e80e70c411ec0f5a1891e078b669f176658c34 Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/61972 Tested-by: Jenkins Server <[email protected]> Tested-by: HWSV CI <[email protected]> Tested-by: Hostboot CI <[email protected]> Reviewed-by: Louis Stermole <[email protected]> Reviewed-by: RYAN P. KING <[email protected]> Reviewed-by: ANDRE A. MARIN <[email protected]> Reviewed-by: Jennifer A. Stofer <[email protected]> Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/71232 Tested-by: FSP CI Jenkins <[email protected]> Tested-by: Jenkins OP Build CI <[email protected]> Tested-by: Jenkins OP HW <[email protected]> Reviewed-by: Christian R. Geddes <[email protected]>
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/* permissions and limitations under the License. */ | ||
/* */ | ||
/* IBM_PROLOG_END_TAG */ | ||
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/// | ||
/// @file exp_check_for_ready.C | ||
/// @brief FW polls I2C slave interface to determine when it is ready | ||
/// | ||
// *HWP HWP Owner: Andre Marin <[email protected]> | ||
// *HWP HWP Backup: Stephen Glancy <[email protected]> | ||
// *HWP Team: Memory | ||
// *HWP Level: 2 | ||
// *HWP Consumed by: FSP:HB | ||
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#include <fapi2.H> | ||
#include <exp_check_for_ready.H> | ||
#include <lib/i2c/exp_i2c.H> | ||
#include <generic/memory/lib/utils/poll.H> | ||
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extern "C" | ||
{ | ||
/// | ||
/// @brief Checks if the explorer I2C is ready to receive commands | ||
/// @param[in] i_target the controller | ||
/// @return FAPI2_RC_SUCCESS iff ok | ||
/// | ||
fapi2::ReturnCode exp_check_for_ready(const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP>& i_target) | ||
{ | ||
// Using default parameters | ||
mss::poll_parameters l_poll_params; | ||
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// From MSCC explorer firmware arch spec | ||
// 4.1.5: After power-up, the Explorer Chip will respond with NACK to all incoming I2C requests | ||
// from the HOST until the I2C slave interface is ready to receive commands. | ||
FAPI_ASSERT( mss::poll(i_target, l_poll_params, [i_target]()->bool | ||
{ | ||
return mss::exp::i2c::is_ready(i_target) == fapi2::FAPI2_RC_SUCCESS; | ||
}), | ||
fapi2::MSS_EXP_I2C_POLLING_TIMEOUT(). | ||
set_TARGET(i_target), | ||
"Failed to see an ACK from I2C -- polling timeout on %s", | ||
mss::c_str(i_target) ); | ||
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// We send the EXP_FW_STATUS command as a sanity check to see if it returns SUCCESS | ||
FAPI_ASSERT( mss::poll(i_target, l_poll_params, [i_target]()->bool | ||
{ | ||
return mss::exp::i2c::fw_status(i_target) == fapi2::FAPI2_RC_SUCCESS; | ||
}), | ||
fapi2::MSS_EXP_STATUS_POLLING_TIMEOUT(). | ||
set_TARGET(i_target), | ||
"Failled to see a successful return code -- polling timeout on %s", | ||
mss::c_str(i_target) ); | ||
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return fapi2::FAPI2_RC_SUCCESS; | ||
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fapi_try_exit: | ||
return fapi2::current_err; | ||
} | ||
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}// extern C |
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|
@@ -22,3 +22,34 @@ | |
/* permissions and limitations under the License. */ | ||
/* */ | ||
/* IBM_PROLOG_END_TAG */ | ||
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||
/// | ||
/// @file exp_check_for_ready.H | ||
/// @brief FW polls I2C slave interface to determine when it is ready | ||
/// | ||
// *HWP HWP Owner: Andre Marin <[email protected]> | ||
// *HWP HWP Backup: Stephen Glancy <[email protected]> | ||
// *HWP Team: Memory | ||
// *HWP Level: 2 | ||
// *HWP Consumed by: FSP:HB | ||
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#ifndef __MSS_EXP_CHECK_FOR_READY__ | ||
#define __MSS_EXP_CHECK_FOR_READY__ | ||
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#include <fapi2.H> | ||
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// Required for Cronus | ||
typedef fapi2::ReturnCode (*exp_check_for_ready_FP_t) (const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP>&); | ||
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extern "C" | ||
{ | ||
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/// | ||
/// @brief Checks if the explorer I2C is ready to receive commands | ||
/// @param[in] i_target the controller | ||
/// @return FAPI2_RC_SUCCESS iff ok | ||
/// | ||
fapi2::ReturnCode exp_check_for_ready(const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP>& i_target); | ||
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}// extern C | ||
#endif |