Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright 2016 Google Inc. |
Mario Scheithauer | d127be1 | 2018-04-23 10:55:39 +0200 | [diff] [blame] | 5 | * Copyright (C) 2017-2018 Siemens AG |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; version 2 of the License. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | */ |
| 16 | |
Mario Scheithauer | 6141353 | 2018-04-25 14:05:09 +0200 | [diff] [blame] | 17 | #include <compiler.h> |
Ravi Sarawadi | efa606b | 2017-08-04 16:26:09 -0700 | [diff] [blame] | 18 | #include <console/console.h> |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 19 | #include <device/device.h> |
Mario Scheithauer | b83858a | 2017-09-05 15:32:49 +0200 | [diff] [blame] | 20 | #include <device/pci.h> |
| 21 | #include <device/pci_ids.h> |
Mario Scheithauer | 480eab0 | 2017-02-16 13:39:16 +0100 | [diff] [blame] | 22 | #include <hwilib.h> |
| 23 | #include <i210.h> |
Mario Scheithauer | 0af272c | 2018-04-10 12:40:11 +0200 | [diff] [blame] | 24 | #include <intelblocks/cpulib.h> |
Mario Scheithauer | 0af272c | 2018-04-10 12:40:11 +0200 | [diff] [blame] | 25 | #include <intelblocks/systemagent.h> |
Ravi Sarawadi | efa606b | 2017-08-04 16:26:09 -0700 | [diff] [blame] | 26 | #include <soc/pci_devs.h> |
| 27 | #include <string.h> |
Werner Zeh | efd0eb3 | 2017-09-12 08:58:44 +0200 | [diff] [blame] | 28 | #include <timer.h> |
Mario Scheithauer | d127be1 | 2018-04-23 10:55:39 +0200 | [diff] [blame] | 29 | #include <baseboard/variants.h> |
Mario Scheithauer | 480eab0 | 2017-02-16 13:39:16 +0100 | [diff] [blame] | 30 | |
| 31 | #define MAX_PATH_DEPTH 12 |
| 32 | #define MAX_NUM_MAPPINGS 10 |
| 33 | |
Mario Scheithauer | 0af272c | 2018-04-10 12:40:11 +0200 | [diff] [blame] | 34 | #define BIOS_MAILBOX_WAIT_MAX_MS 1000 |
| 35 | #define BIOS_MAILBOX_DATA 0x7080 |
| 36 | #define BIOS_MAILBOX_INTERFACE 0x7084 |
| 37 | #define RUN_BUSY_STS (1 << 31) |
| 38 | |
Mario Scheithauer | 480eab0 | 2017-02-16 13:39:16 +0100 | [diff] [blame] | 39 | /** \brief This function can decide if a given MAC address is valid or not. |
| 40 | * Currently, addresses filled with 0xff or 0x00 are not valid. |
| 41 | * @param mac Buffer to the MAC address to check |
| 42 | * @return 0 if address is not valid, otherwise 1 |
| 43 | */ |
| 44 | static uint8_t is_mac_adr_valid(uint8_t mac[6]) |
| 45 | { |
| 46 | uint8_t buf[6]; |
| 47 | |
| 48 | memset(buf, 0, sizeof(buf)); |
| 49 | if (!memcmp(buf, mac, sizeof(buf))) |
| 50 | return 0; |
| 51 | memset(buf, 0xff, sizeof(buf)); |
| 52 | if (!memcmp(buf, mac, sizeof(buf))) |
| 53 | return 0; |
| 54 | return 1; |
| 55 | } |
| 56 | |
| 57 | /** \brief This function will search for a MAC address which can be assigned |
| 58 | * to a MACPHY. |
| 59 | * @param dev pointer to PCI device |
| 60 | * @param mac buffer where to store the MAC address |
| 61 | * @return cb_err CB_ERR or CB_SUCCESS |
| 62 | */ |
| 63 | enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[6]) |
| 64 | { |
| 65 | struct bus *parent = dev->bus; |
| 66 | uint8_t buf[16], mapping[16], i = 0, chain_len = 0; |
| 67 | |
| 68 | memset(buf, 0, sizeof(buf)); |
| 69 | memset(mapping, 0, sizeof(mapping)); |
| 70 | |
| 71 | /* The first entry in the tree is the device itself. */ |
| 72 | buf[0] = dev->path.pci.devfn; |
| 73 | chain_len = 1; |
| 74 | for (i = 1; i < MAX_PATH_DEPTH && parent->dev->bus->subordinate; i++) { |
| 75 | buf[i] = parent->dev->path.pci.devfn; |
| 76 | chain_len++; |
| 77 | parent = parent->dev->bus; |
| 78 | } |
| 79 | if (i == MAX_PATH_DEPTH) { |
| 80 | /* The path is deeper than MAX_PATH_DEPTH devices, error. */ |
| 81 | printk(BIOS_ERR, "Too many bridges for %s\n", dev_path(dev)); |
| 82 | return CB_ERR; |
| 83 | } |
| 84 | /* |
| 85 | * Now construct the mapping based on the device chain starting from |
| 86 | * root bridge device to the device itself. |
| 87 | */ |
| 88 | mapping[0] = 1; |
| 89 | mapping[1] = chain_len; |
| 90 | for (i = 0; i < chain_len; i++) |
| 91 | mapping[i + 4] = buf[chain_len - i - 1]; |
| 92 | |
| 93 | /* Open main hwinfo block */ |
| 94 | if (hwilib_find_blocks("hwinfo.hex") != CB_SUCCESS) |
| 95 | return CB_ERR; |
| 96 | /* Now try to find a valid MAC address in hwinfo for this mapping.*/ |
| 97 | for (i = 0; i < MAX_NUM_MAPPINGS; i++) { |
| 98 | if ((hwilib_get_field(XMac1Mapping + i, buf, 16) == 16) && |
| 99 | !(memcmp(buf, mapping, chain_len + 4))) { |
| 100 | /* There is a matching mapping available, get MAC address. */ |
| 101 | if ((hwilib_get_field(XMac1 + i, mac, 6) == 6) && |
| 102 | (is_mac_adr_valid(mac))) { |
| 103 | return CB_SUCCESS; |
| 104 | } else { |
| 105 | return CB_ERR; |
| 106 | } |
| 107 | } else |
| 108 | continue; |
| 109 | } |
| 110 | /* No MAC address found for */ |
| 111 | return CB_ERR; |
| 112 | } |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 113 | |
Mario Scheithauer | 0af272c | 2018-04-10 12:40:11 +0200 | [diff] [blame] | 114 | /** \brief This function fixes an accuracy issue with IDT PMIC. |
| 115 | * The current reported system power consumption is higher than the |
| 116 | * actual consumption. With a correction of slope and offset for Vcc |
| 117 | * and Vnn, the issue is solved. |
| 118 | */ |
| 119 | static void config_pmic_imon(void) |
| 120 | { |
| 121 | struct stopwatch sw; |
| 122 | uint32_t power_max; |
| 123 | |
| 124 | printk(BIOS_DEBUG, "PMIC: Configure PMIC IMON - Start\n"); |
| 125 | |
| 126 | /* Calculate CPU TDP in mW */ |
| 127 | power_max = cpu_get_power_max(); |
| 128 | printk(BIOS_INFO, "PMIC: CPU TDP %d mW.\n", power_max); |
| 129 | |
| 130 | /* |
| 131 | * Fix Vnn slope and offset value. |
| 132 | * slope = 0x4a4 # 2.32 |
| 133 | * offset = 0xfa0d # -2.975 |
| 134 | */ |
| 135 | stopwatch_init_msecs_expire(&sw, BIOS_MAILBOX_WAIT_MAX_MS); |
| 136 | /* Read P_CR_BIOS_MAILBOX_INTERFACE_0_0_0_MCHBAR and check RUN_BUSY. */ |
| 137 | while ((MCHBAR32(BIOS_MAILBOX_INTERFACE) & RUN_BUSY_STS)) { |
| 138 | if (stopwatch_expired(&sw)) { |
| 139 | printk(BIOS_ERR, "PMIC: Power consumption measurement " |
| 140 | "setup fails for Vnn.\n"); |
| 141 | return; |
| 142 | } |
| 143 | } |
| 144 | /* Set Vnn values into P_CR_BIOS_MAILBOX_DATA_0_0_0_MCHBAR. */ |
| 145 | MCHBAR32(BIOS_MAILBOX_DATA) = 0xfa0d04a4; |
| 146 | /* Set command, address and busy bit. */ |
| 147 | MCHBAR32(BIOS_MAILBOX_INTERFACE) = 0x8000011d; |
| 148 | printk(BIOS_DEBUG, "PMIC: Fix Vnn slope and offset value.\n"); |
| 149 | |
| 150 | /* |
| 151 | * Fix Vcc slope and offset value. |
| 152 | * Premium and High SKU: |
| 153 | * slope = 0x466 # 2.2 |
| 154 | * offset = 0xe833 # -11.9 |
| 155 | * Low and Intermediate SKU: |
| 156 | * slope = 0x3b3 # 1.85 |
| 157 | * offset = 0xed33 # -9.4 |
| 158 | */ |
| 159 | stopwatch_init_msecs_expire(&sw, BIOS_MAILBOX_WAIT_MAX_MS); |
| 160 | while ((MCHBAR32(BIOS_MAILBOX_INTERFACE) & RUN_BUSY_STS)) { |
| 161 | if (stopwatch_expired(&sw)) { |
| 162 | printk(BIOS_ERR, "PMIC: Power consumption measurement " |
| 163 | "setup fails for Vcc.\n"); |
| 164 | return; |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /* |
| 169 | * CPU TDP limit between Premium/High and Low/Intermediate SKU |
| 170 | * is 9010 mW. |
| 171 | */ |
| 172 | if (power_max > 9010) { |
| 173 | MCHBAR32(BIOS_MAILBOX_DATA) = 0xe8330466; |
| 174 | MCHBAR32(BIOS_MAILBOX_INTERFACE) = 0x8000001d; |
| 175 | printk(BIOS_INFO, "PMIC: Fix Vcc for Premium SKU.\n"); |
| 176 | } else { |
| 177 | MCHBAR32(BIOS_MAILBOX_DATA) = 0xed3303b3; |
| 178 | MCHBAR32(BIOS_MAILBOX_INTERFACE) = 0x8000001d; |
| 179 | printk(BIOS_INFO, "PMIC: Fix Vcc for Low SKU.\n"); |
| 180 | } |
| 181 | |
| 182 | printk(BIOS_DEBUG, "PMIC: Configure PMIC IMON - End\n"); |
| 183 | } |
| 184 | |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 185 | static void mainboard_init(void *chip_info) |
| 186 | { |
Mario Scheithauer | 2d98120 | 2017-03-27 13:25:57 +0200 | [diff] [blame] | 187 | const struct pad_config *pads; |
| 188 | size_t num; |
| 189 | |
Mario Scheithauer | d127be1 | 2018-04-23 10:55:39 +0200 | [diff] [blame] | 190 | pads = variant_gpio_table(&num); |
Mario Scheithauer | 2d98120 | 2017-03-27 13:25:57 +0200 | [diff] [blame] | 191 | gpio_configure_pads(pads, num); |
Mario Scheithauer | 0af272c | 2018-04-10 12:40:11 +0200 | [diff] [blame] | 192 | |
| 193 | config_pmic_imon(); |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 194 | } |
| 195 | |
Mario Scheithauer | 956a9f6 | 2017-03-29 17:09:37 +0200 | [diff] [blame] | 196 | static void mainboard_final(void *chip_info) |
| 197 | { |
Mario Scheithauer | b83858a | 2017-09-05 15:32:49 +0200 | [diff] [blame] | 198 | uint16_t cmd = 0; |
| 199 | device_t dev = NULL; |
Mario Scheithauer | 956a9f6 | 2017-03-29 17:09:37 +0200 | [diff] [blame] | 200 | |
Mario Scheithauer | 6141353 | 2018-04-25 14:05:09 +0200 | [diff] [blame] | 201 | /* Do board specific things */ |
| 202 | variant_mainboard_final(); |
Mario Scheithauer | b83858a | 2017-09-05 15:32:49 +0200 | [diff] [blame] | 203 | |
| 204 | /* Set Master Enable for on-board PCI device. */ |
| 205 | dev = dev_find_device(PCI_VENDOR_ID_SIEMENS, 0x403f, 0); |
| 206 | if (dev) { |
| 207 | cmd = pci_read_config16(dev, PCI_COMMAND); |
| 208 | cmd |= PCI_COMMAND_MASTER; |
| 209 | pci_write_config16(dev, PCI_COMMAND, cmd); |
| 210 | } |
Mario Scheithauer | 956a9f6 | 2017-03-29 17:09:37 +0200 | [diff] [blame] | 211 | } |
| 212 | |
Mario Scheithauer | 6141353 | 2018-04-25 14:05:09 +0200 | [diff] [blame] | 213 | /* The following function performs board specific things. */ |
| 214 | void __weak variant_mainboard_final(void) |
Werner Zeh | efd0eb3 | 2017-09-12 08:58:44 +0200 | [diff] [blame] | 215 | { |
Werner Zeh | efd0eb3 | 2017-09-12 08:58:44 +0200 | [diff] [blame] | 216 | } |
| 217 | |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 218 | struct chip_operations mainboard_ops = { |
| 219 | .init = mainboard_init, |
Mario Scheithauer | 956a9f6 | 2017-03-29 17:09:37 +0200 | [diff] [blame] | 220 | .final = mainboard_final, |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 221 | }; |