163 lines
4.8 KiB
C
163 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Intel MAX 10 Board Management Controller chip.
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*
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* Copyright (C) 2018-2020 Intel Corporation, Inc.
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*/
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#ifndef __MFD_INTEL_M10_BMC_H
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#define __MFD_INTEL_M10_BMC_H
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#include <linux/regmap.h>
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#define M10BMC_LEGACY_BUILD_VER 0x300468
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#define M10BMC_SYS_BASE 0x300800
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#define M10BMC_SYS_END 0x300fff
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#define M10BMC_FLASH_BASE 0x10000000
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#define M10BMC_FLASH_END 0x1fffffff
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#define M10BMC_MEM_END M10BMC_FLASH_END
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#define M10BMC_STAGING_BASE 0x18000000
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#define M10BMC_STAGING_SIZE 0x3800000
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/* Register offset of system registers */
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#define NIOS2_FW_VERSION 0x0
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#define M10BMC_MAC_LOW 0x10
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#define M10BMC_MAC_BYTE4 GENMASK(7, 0)
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#define M10BMC_MAC_BYTE3 GENMASK(15, 8)
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#define M10BMC_MAC_BYTE2 GENMASK(23, 16)
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#define M10BMC_MAC_BYTE1 GENMASK(31, 24)
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#define M10BMC_MAC_HIGH 0x14
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#define M10BMC_MAC_BYTE6 GENMASK(7, 0)
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#define M10BMC_MAC_BYTE5 GENMASK(15, 8)
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#define M10BMC_MAC_COUNT GENMASK(23, 16)
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#define M10BMC_TEST_REG 0x3c
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#define M10BMC_BUILD_VER 0x68
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#define M10BMC_VER_MAJOR_MSK GENMASK(23, 16)
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#define M10BMC_VER_PCB_INFO_MSK GENMASK(31, 24)
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#define M10BMC_VER_LEGACY_INVALID 0xffffffff
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/* Secure update doorbell register, in system register region */
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#define M10BMC_DOORBELL 0x400
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/* Authorization Result register, in system register region */
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#define M10BMC_AUTH_RESULT 0x404
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/* Doorbell register fields */
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#define DRBL_RSU_REQUEST BIT(0)
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#define DRBL_RSU_PROGRESS GENMASK(7, 4)
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#define DRBL_HOST_STATUS GENMASK(11, 8)
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#define DRBL_RSU_STATUS GENMASK(23, 16)
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#define DRBL_PKVL_EEPROM_LOAD_SEC BIT(24)
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#define DRBL_PKVL1_POLL_EN BIT(25)
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#define DRBL_PKVL2_POLL_EN BIT(26)
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#define DRBL_CONFIG_SEL BIT(28)
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#define DRBL_REBOOT_REQ BIT(29)
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#define DRBL_REBOOT_DISABLED BIT(30)
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/* Progress states */
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#define RSU_PROG_IDLE 0x0
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#define RSU_PROG_PREPARE 0x1
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#define RSU_PROG_READY 0x3
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#define RSU_PROG_AUTHENTICATING 0x4
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#define RSU_PROG_COPYING 0x5
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#define RSU_PROG_UPDATE_CANCEL 0x6
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#define RSU_PROG_PROGRAM_KEY_HASH 0x7
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#define RSU_PROG_RSU_DONE 0x8
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#define RSU_PROG_PKVL_PROM_DONE 0x9
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/* Device and error states */
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#define RSU_STAT_NORMAL 0x0
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#define RSU_STAT_TIMEOUT 0x1
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#define RSU_STAT_AUTH_FAIL 0x2
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#define RSU_STAT_COPY_FAIL 0x3
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#define RSU_STAT_FATAL 0x4
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#define RSU_STAT_PKVL_REJECT 0x5
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#define RSU_STAT_NON_INC 0x6
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#define RSU_STAT_ERASE_FAIL 0x7
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#define RSU_STAT_WEAROUT 0x8
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#define RSU_STAT_NIOS_OK 0x80
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#define RSU_STAT_USER_OK 0x81
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#define RSU_STAT_FACTORY_OK 0x82
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#define RSU_STAT_USER_FAIL 0x83
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#define RSU_STAT_FACTORY_FAIL 0x84
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#define RSU_STAT_NIOS_FLASH_ERR 0x85
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#define RSU_STAT_FPGA_FLASH_ERR 0x86
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#define HOST_STATUS_IDLE 0x0
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#define HOST_STATUS_WRITE_DONE 0x1
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#define HOST_STATUS_ABORT_RSU 0x2
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#define rsu_prog(doorbell) FIELD_GET(DRBL_RSU_PROGRESS, doorbell)
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#define rsu_stat(doorbell) FIELD_GET(DRBL_RSU_STATUS, doorbell)
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/* interval 100ms and timeout 5s */
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#define NIOS_HANDSHAKE_INTERVAL_US (100 * 1000)
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#define NIOS_HANDSHAKE_TIMEOUT_US (5 * 1000 * 1000)
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/* RSU PREP Timeout (2 minutes) to erase flash staging area */
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#define RSU_PREP_INTERVAL_MS 100
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#define RSU_PREP_TIMEOUT_MS (2 * 60 * 1000)
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/* RSU Complete Timeout (40 minutes) for full flash update */
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#define RSU_COMPLETE_INTERVAL_MS 1000
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#define RSU_COMPLETE_TIMEOUT_MS (40 * 60 * 1000)
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/* Addresses for security related data in FLASH */
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#define BMC_REH_ADDR 0x17ffc004
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#define BMC_PROG_ADDR 0x17ffc000
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#define BMC_PROG_MAGIC 0x5746
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#define SR_REH_ADDR 0x17ffd004
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#define SR_PROG_ADDR 0x17ffd000
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#define SR_PROG_MAGIC 0x5253
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#define PR_REH_ADDR 0x17ffe004
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#define PR_PROG_ADDR 0x17ffe000
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#define PR_PROG_MAGIC 0x5250
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/* Address of 4KB inverted bit vector containing staging area FLASH count */
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#define STAGING_FLASH_COUNT 0x17ffb000
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/**
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* struct intel_m10bmc - Intel MAX 10 BMC parent driver data structure
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* @dev: this device
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* @regmap: the regmap used to access registers by m10bmc itself
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*/
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struct intel_m10bmc {
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struct device *dev;
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struct regmap *regmap;
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};
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/*
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* register access helper functions.
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*
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* m10bmc_raw_read - read m10bmc register per addr
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* m10bmc_sys_read - read m10bmc system register per offset
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*/
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static inline int
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m10bmc_raw_read(struct intel_m10bmc *m10bmc, unsigned int addr,
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unsigned int *val)
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{
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int ret;
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ret = regmap_read(m10bmc->regmap, addr, val);
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if (ret)
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dev_err(m10bmc->dev, "fail to read raw reg %x: %d\n",
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addr, ret);
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return ret;
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}
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/*
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* The base of the system registers could be configured by HW developers, and
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* in HW SPEC, the base is not added to the addresses of the system registers.
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*
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* This macro helps to simplify the accessing of the system registers. And if
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* the base is reconfigured in HW, SW developers could simply change the
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* M10BMC_SYS_BASE accordingly.
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*/
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#define m10bmc_sys_read(m10bmc, offset, val) \
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m10bmc_raw_read(m10bmc, M10BMC_SYS_BASE + (offset), val)
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#endif /* __MFD_INTEL_M10_BMC_H */
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