From 3cdd4fbe9ad2f4825c92c6204f941b84dfc3262c Mon Sep 17 00:00:00 2001 From: Mark Pizzutillo Date: Wed, 28 Aug 2019 19:38:36 -0400 Subject: Add pmic_i2c_addr_get function for platform code use Change-Id: I79b5bcc1ce8de9066aa87e793d38fab64752f17f Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/83033 Tested-by: FSP CI Jenkins Tested-by: Jenkins Server Reviewed-by: STEPHEN GLANCY Reviewed-by: Christian R Geddes Reviewed-by: Jennifer A Stofer Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/83735 Tested-by: Jenkins OP Build CI Tested-by: Jenkins OP HW --- .../ocmb/common/spd_access/pmic_i2c_addr_get.H | 82 ++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 src/import/chips/ocmb/common/spd_access/pmic_i2c_addr_get.H (limited to 'src/import/chips/ocmb') diff --git a/src/import/chips/ocmb/common/spd_access/pmic_i2c_addr_get.H b/src/import/chips/ocmb/common/spd_access/pmic_i2c_addr_get.H new file mode 100644 index 000000000..f9134ccb4 --- /dev/null +++ b/src/import/chips/ocmb/common/spd_access/pmic_i2c_addr_get.H @@ -0,0 +1,82 @@ +/* IBM_PROLOG_BEGIN_TAG */ +/* This is an automatically generated prolog. */ +/* */ +/* $Source: src/import/chips/ocmb/common/spd_access/pmic_i2c_addr_get.H $ */ +/* */ +/* OpenPOWER HostBoot Project */ +/* */ +/* Contributors Listed Below - COPYRIGHT 2019 */ +/* [+] International Business Machines Corp. */ +/* */ +/* */ +/* Licensed under the Apache License, Version 2.0 (the "License"); */ +/* you may not use this file except in compliance with the License. */ +/* You may obtain a copy of the License at */ +/* */ +/* http://www.apache.org/licenses/LICENSE-2.0 */ +/* */ +/* Unless required by applicable law or agreed to in writing, software */ +/* distributed under the License is distributed on an "AS IS" BASIS, */ +/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */ +/* implied. See the License for the specific language governing */ +/* permissions and limitations under the License. */ +/* */ +/* IBM_PROLOG_END_TAG */ +/// +/// @file pmic_i2c_addr_get.H +/// @brief Function to get PMIC i2c addresses given SPD binary +/// +// *HWP HWP Owner: Mark Pizzutillo +// *HWP HWP Owner: Dan Crowell +// *HWP Team: Memory +// *HWP Level: 2 +// *HWP Consumed by: FSP:HB + +/// +/// @brief Get the pmic i2c addrs from the provided spd binary +/// +/// @param[in] i_spd SPD binary +/// @param[out] o_pmic0_i2c_addr I2C Address from SPD +/// @param[out] o_pmic1_i2c_addr I2C Address from SPD +/// + +#ifndef __PMIC_I2C_ADDR_GET__ +#define __PMIC_I2C_ADDR_GET__ + +#include + +constexpr uint16_t SPD_PMIC0_I2C_BYTE = 260; +constexpr uint16_t SPD_PMIC1_I2C_BYTE = 261; + +constexpr uint8_t PMIC0 = 0; +constexpr uint8_t PMIC1 = 1; + +// Mapping from PMIC ID to SPD byte +static const std::vector PMIC_I2C_ADDR_VECTOR = +{ + SPD_PMIC0_I2C_BYTE, // [0 == PMIC0] + SPD_PMIC1_I2C_BYTE // [1 == PMIC1] +}; + +/// +/// @brief Get the pmic i2c address for the given PMIC ID +/// +/// @param[in] i_spd SPD binary +/// @param[in] i_pmic_id PMIC ID (0,1) +/// @return uint8_t I2C address for the given PMIC ID +/// @note May need to be changed to support 4U SPD +/// +inline uint8_t get_pmic_i2c_addr(const char* i_spd, const uint8_t i_pmic_id) +{ + // Out of range, just return 0. Failsafe so we don't segfault + // The caller is responsible for calling this with a valid ID + if (i_pmic_id >= PMIC_I2C_ADDR_VECTOR.size()) + { + return 0; + } + + const uint16_t l_byte = PMIC_I2C_ADDR_VECTOR[i_pmic_id]; + return uint8_t(i_spd[l_byte]); +} + +#endif -- cgit v1.2.1