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 | 480eab0 | 2017-02-16 13:39:16 +0100 | [diff] [blame] | 5 | * Copyright (C) 2017 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 | |
Ravi Sarawadi | efa606b | 2017-08-04 16:26:09 -0700 | [diff] [blame] | 17 | #include <console/console.h> |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 18 | #include <device/device.h> |
Mario Scheithauer | b83858a | 2017-09-05 15:32:49 +0200 | [diff] [blame] | 19 | #include <device/pci.h> |
| 20 | #include <device/pci_ids.h> |
Mario Scheithauer | 480eab0 | 2017-02-16 13:39:16 +0100 | [diff] [blame] | 21 | #include <hwilib.h> |
| 22 | #include <i210.h> |
Ravi Sarawadi | efa606b | 2017-08-04 16:26:09 -0700 | [diff] [blame] | 23 | #include <intelblocks/lpc_lib.h> |
| 24 | #include <soc/pci_devs.h> |
| 25 | #include <string.h> |
Werner Zeh | efd0eb3 | 2017-09-12 08:58:44 +0200 | [diff] [blame^] | 26 | #include <bootstate.h> |
| 27 | #include <timer.h> |
| 28 | #include <timestamp.h> |
Mario Scheithauer | 2d98120 | 2017-03-27 13:25:57 +0200 | [diff] [blame] | 29 | #include "brd_gpio.h" |
Mario Scheithauer | 956a9f6 | 2017-03-29 17:09:37 +0200 | [diff] [blame] | 30 | #include "ptn3460.h" |
Mario Scheithauer | 480eab0 | 2017-02-16 13:39:16 +0100 | [diff] [blame] | 31 | |
| 32 | #define MAX_PATH_DEPTH 12 |
| 33 | #define MAX_NUM_MAPPINGS 10 |
| 34 | |
| 35 | /** \brief This function can decide if a given MAC address is valid or not. |
| 36 | * Currently, addresses filled with 0xff or 0x00 are not valid. |
| 37 | * @param mac Buffer to the MAC address to check |
| 38 | * @return 0 if address is not valid, otherwise 1 |
| 39 | */ |
| 40 | static uint8_t is_mac_adr_valid(uint8_t mac[6]) |
| 41 | { |
| 42 | uint8_t buf[6]; |
| 43 | |
| 44 | memset(buf, 0, sizeof(buf)); |
| 45 | if (!memcmp(buf, mac, sizeof(buf))) |
| 46 | return 0; |
| 47 | memset(buf, 0xff, sizeof(buf)); |
| 48 | if (!memcmp(buf, mac, sizeof(buf))) |
| 49 | return 0; |
| 50 | return 1; |
| 51 | } |
| 52 | |
| 53 | /** \brief This function will search for a MAC address which can be assigned |
| 54 | * to a MACPHY. |
| 55 | * @param dev pointer to PCI device |
| 56 | * @param mac buffer where to store the MAC address |
| 57 | * @return cb_err CB_ERR or CB_SUCCESS |
| 58 | */ |
| 59 | enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[6]) |
| 60 | { |
| 61 | struct bus *parent = dev->bus; |
| 62 | uint8_t buf[16], mapping[16], i = 0, chain_len = 0; |
| 63 | |
| 64 | memset(buf, 0, sizeof(buf)); |
| 65 | memset(mapping, 0, sizeof(mapping)); |
| 66 | |
| 67 | /* The first entry in the tree is the device itself. */ |
| 68 | buf[0] = dev->path.pci.devfn; |
| 69 | chain_len = 1; |
| 70 | for (i = 1; i < MAX_PATH_DEPTH && parent->dev->bus->subordinate; i++) { |
| 71 | buf[i] = parent->dev->path.pci.devfn; |
| 72 | chain_len++; |
| 73 | parent = parent->dev->bus; |
| 74 | } |
| 75 | if (i == MAX_PATH_DEPTH) { |
| 76 | /* The path is deeper than MAX_PATH_DEPTH devices, error. */ |
| 77 | printk(BIOS_ERR, "Too many bridges for %s\n", dev_path(dev)); |
| 78 | return CB_ERR; |
| 79 | } |
| 80 | /* |
| 81 | * Now construct the mapping based on the device chain starting from |
| 82 | * root bridge device to the device itself. |
| 83 | */ |
| 84 | mapping[0] = 1; |
| 85 | mapping[1] = chain_len; |
| 86 | for (i = 0; i < chain_len; i++) |
| 87 | mapping[i + 4] = buf[chain_len - i - 1]; |
| 88 | |
| 89 | /* Open main hwinfo block */ |
| 90 | if (hwilib_find_blocks("hwinfo.hex") != CB_SUCCESS) |
| 91 | return CB_ERR; |
| 92 | /* Now try to find a valid MAC address in hwinfo for this mapping.*/ |
| 93 | for (i = 0; i < MAX_NUM_MAPPINGS; i++) { |
| 94 | if ((hwilib_get_field(XMac1Mapping + i, buf, 16) == 16) && |
| 95 | !(memcmp(buf, mapping, chain_len + 4))) { |
| 96 | /* There is a matching mapping available, get MAC address. */ |
| 97 | if ((hwilib_get_field(XMac1 + i, mac, 6) == 6) && |
| 98 | (is_mac_adr_valid(mac))) { |
| 99 | return CB_SUCCESS; |
| 100 | } else { |
| 101 | return CB_ERR; |
| 102 | } |
| 103 | } else |
| 104 | continue; |
| 105 | } |
| 106 | /* No MAC address found for */ |
| 107 | return CB_ERR; |
| 108 | } |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 109 | |
| 110 | static void mainboard_init(void *chip_info) |
| 111 | { |
Mario Scheithauer | 2d98120 | 2017-03-27 13:25:57 +0200 | [diff] [blame] | 112 | const struct pad_config *pads; |
| 113 | size_t num; |
| 114 | |
| 115 | pads = brd_gpio_table(&num); |
| 116 | gpio_configure_pads(pads, num); |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 117 | } |
| 118 | |
Mario Scheithauer | 956a9f6 | 2017-03-29 17:09:37 +0200 | [diff] [blame] | 119 | static void mainboard_final(void *chip_info) |
| 120 | { |
| 121 | int status; |
Mario Scheithauer | b83858a | 2017-09-05 15:32:49 +0200 | [diff] [blame] | 122 | uint16_t cmd = 0; |
| 123 | device_t dev = NULL; |
Mario Scheithauer | 956a9f6 | 2017-03-29 17:09:37 +0200 | [diff] [blame] | 124 | |
| 125 | /** |
| 126 | * Set up the DP2LVDS converter. |
| 127 | * ptn3460_init() may only be executed after i2c bus init. |
| 128 | */ |
| 129 | status = ptn3460_init("hwinfo.hex"); |
| 130 | if (status) |
| 131 | printk(BIOS_ERR, "LCD: Set up PTN with status 0x%x\n", status); |
| 132 | else |
| 133 | printk(BIOS_INFO, "LCD: Set up PTN was successful.\n"); |
Mario Scheithauer | 71dacac | 2017-06-21 12:42:10 +0200 | [diff] [blame] | 134 | |
| 135 | /* Enable additional I/O decoding range on LPC for COM 3 */ |
| 136 | lpc_open_pmio_window(0x3e8, 8); |
Mario Scheithauer | b83858a | 2017-09-05 15:32:49 +0200 | [diff] [blame] | 137 | |
| 138 | /* Set Master Enable for on-board PCI device. */ |
| 139 | dev = dev_find_device(PCI_VENDOR_ID_SIEMENS, 0x403f, 0); |
| 140 | if (dev) { |
| 141 | cmd = pci_read_config16(dev, PCI_COMMAND); |
| 142 | cmd |= PCI_COMMAND_MASTER; |
| 143 | pci_write_config16(dev, PCI_COMMAND, cmd); |
| 144 | } |
Mario Scheithauer | 956a9f6 | 2017-03-29 17:09:37 +0200 | [diff] [blame] | 145 | } |
| 146 | |
Werner Zeh | efd0eb3 | 2017-09-12 08:58:44 +0200 | [diff] [blame^] | 147 | static void wait_for_legacy_dev(void *unused) |
| 148 | { |
| 149 | uint32_t legacy_delay, us_since_boot; |
| 150 | struct stopwatch sw; |
| 151 | |
| 152 | /* Open main hwinfo block. */ |
| 153 | if (hwilib_find_blocks("hwinfo.hex") != CB_SUCCESS) |
| 154 | return; |
| 155 | |
| 156 | /* Get legacy delay parameter from hwinfo. */ |
| 157 | if (hwilib_get_field(LegacyDelay, (uint8_t *) &legacy_delay, |
| 158 | sizeof(legacy_delay)) != sizeof(legacy_delay)) |
| 159 | return; |
| 160 | |
| 161 | us_since_boot = get_us_since_boot(); |
| 162 | /* No need to wait if the time since boot is already long enough.*/ |
| 163 | if (us_since_boot > legacy_delay) |
| 164 | return; |
| 165 | stopwatch_init_msecs_expire(&sw, (legacy_delay - us_since_boot) / 1000); |
| 166 | printk(BIOS_NOTICE, "Wait remaining %d of %d us for legacy devices...", |
| 167 | legacy_delay - us_since_boot, legacy_delay); |
| 168 | while (!stopwatch_expired(&sw)) |
| 169 | ; |
| 170 | printk(BIOS_NOTICE, "done!\n"); |
| 171 | } |
| 172 | |
| 173 | BOOT_STATE_INIT_ENTRY(BS_DEV_ENUMERATE, BS_ON_ENTRY, wait_for_legacy_dev, NULL); |
| 174 | |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 175 | struct chip_operations mainboard_ops = { |
| 176 | .init = mainboard_init, |
Mario Scheithauer | 956a9f6 | 2017-03-29 17:09:37 +0200 | [diff] [blame] | 177 | .final = mainboard_final, |
Mario Scheithauer | 092db95 | 2017-01-31 15:45:13 +0100 | [diff] [blame] | 178 | }; |