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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: chips/p9/procedures/hwp/perv/p9_getecid.C $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* EKB Project */
/* */
/* COPYRIGHT 2016 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* The source code for this program is not published or otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* IBM_PROLOG_END_TAG */
//------------------------------------------------------------------------------
/// @file p9_getecid.C
///
/// @brief Get ECID string from target using SCOM
//------------------------------------------------------------------------------
// *HWP HW Owner : Abhishek Agarwal <abagarw8@in.ibm.com>
// *HWP HW Backup Owner : Srinivas V Naga <srinivan@in.ibm.com>
// *HWP FW Owner : sunil kumar <skumar8j@in.ibm.com>
// *HWP Team : Perv
// *HWP Level : 2
// *HWP Consumed by : SBE
//------------------------------------------------------------------------------
//## auto_generated
#include "p9_getecid.H"
//## auto_generated
#include "p9_const_common.H"
#include <p9_perv_scom_addresses.H>
#include <p9_perv_scom_addresses_fld.H>
#include <p9_misc_scom_addresses.H>
#include <p9_misc_scom_addresses_fld.H>
#include <p9_const_common.H>
enum P9_SBE_COMMON_Private_Constants
{
OTPC_M_MODE_REGISTER_ECC_ENABLE_BIT = 1 // OTPROM mode register MODE_ECC_ENABLE field/bit definitions
};
fapi2::ReturnCode p9_getecid(const
fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target_chip, fapi2::variable_buffer& o_fuseString)
{
uint64_t attr_data[2];
bool secure_mode = false;
fapi2::buffer<uint64_t> l_ecid_part0_data64 = 0;
fapi2::buffer<uint64_t> l_ecid_part1_data64 = 0;
fapi2::buffer<uint64_t> l_ecid_part1_data48 = 0;
fapi2::buffer<uint64_t> l_local = 0;
FAPI_INF("Entering ...");
FAPI_DBG("determine if security is enabled");
fapi2::buffer<uint64_t> l_data64;
FAPI_TRY(fapi2::getScom(i_target_chip, PERV_CBS_CS_SCOM, l_data64));
secure_mode = l_data64.getBit<4>();
FAPI_DBG("clear ECC enable before reading ECID data (read-modify-write OTPROM Mode register), insecure mode only");
if (!secure_mode)
{
fapi2::buffer<uint64_t> l_data64;
FAPI_TRY(fapi2::getScom(i_target_chip, PU_MODE_REGISTER, l_data64));
l_data64.clearBit<OTPC_M_MODE_REGISTER_ECC_ENABLE_BIT>();
FAPI_TRY(fapi2::putScom(i_target_chip, PU_MODE_REGISTER, l_data64));
}
FAPI_DBG("extract and manipulate ECID data");
FAPI_TRY(fapi2::getScom(i_target_chip, PU_OTPROM0_ECID_PART0_REGISTER, l_ecid_part0_data64));
FAPI_TRY(fapi2::getScom(i_target_chip, PU_OTPROM0_ECID_PART1_REGISTER, l_ecid_part1_data64));
l_ecid_part0_data64.reverse();
l_ecid_part1_data64.reverse();
l_local.insertFromRight<0, 64>(l_ecid_part0_data64);
attr_data[0] = l_local;
l_local.insertFromRight<0, 64>(l_ecid_part1_data64);
attr_data[1] = l_local;
o_fuseString.insert(l_ecid_part0_data64, 0, 64, 0);
l_ecid_part1_data64.extractToRight<0, 48>(l_ecid_part1_data48);
o_fuseString.insert(l_ecid_part1_data48, 64, 48, 0);
FAPI_DBG("push fuse string into attribute");
FAPI_TRY(FAPI_ATTR_SET(fapi2::ATTR_ECID, i_target_chip, attr_data));
FAPI_DBG("restore ECC enable setting (insecure mode only)");
if (!secure_mode)
{
fapi2::buffer<uint64_t> l_data64;
FAPI_TRY(fapi2::getScom(i_target_chip, PU_MODE_REGISTER, l_data64));
l_data64.setBit<OTPC_M_MODE_REGISTER_ECC_ENABLE_BIT>();
FAPI_TRY(fapi2::putScom(i_target_chip, PU_MODE_REGISTER, l_data64));
}
FAPI_INF("Exiting ...");
// return fapi2::FAPI2_RC_SUCCESS;
fapi_try_exit:
return fapi2::current_err;
}
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