Werner Zeh (werner.zeh@siemens.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/15517
-gerrit
commit 0e7f01c483fc50dfc8807d74aacb1688813386e2 Author: Werner Zeh werner.zeh@siemens.com Date: Thu Jun 30 08:21:17 2016 +0200
siemens/mc_bdx1: Set up MAC address for available i210 MACs
Enable the usage of DRIVER_INTEL_I210 and provide a function to search for a valid MAC address for all i210 devices using hwilib.
Change-Id: Ic0f4f1579364cf5b0111334a05a8a0926785318b Signed-off-by: Werner Zeh werner.zeh@siemens.com --- src/mainboard/siemens/mc_bdx1/Kconfig | 2 + src/mainboard/siemens/mc_bdx1/mainboard.c | 74 +++++++++++++++++++++++++++++++ 2 files changed, 76 insertions(+)
diff --git a/src/mainboard/siemens/mc_bdx1/Kconfig b/src/mainboard/siemens/mc_bdx1/Kconfig index e33b14a..f947f3d 100644 --- a/src/mainboard/siemens/mc_bdx1/Kconfig +++ b/src/mainboard/siemens/mc_bdx1/Kconfig @@ -9,6 +9,8 @@ config BOARD_SPECIFIC_OPTIONS select TSC_MONOTONIC_TIMER select HAVE_FSP_BIN if FSP_PACKAGE_DEFAULT select CBFS_AUTOGEN_ATTRIBUTES + select USE_SIEMENS_HWILIB + select DRIVER_INTEL_I210
config MAINBOARD_DIR string diff --git a/src/mainboard/siemens/mc_bdx1/mainboard.c b/src/mainboard/siemens/mc_bdx1/mainboard.c index 58da036..dcba7d6 100644 --- a/src/mainboard/siemens/mc_bdx1/mainboard.c +++ b/src/mainboard/siemens/mc_bdx1/mainboard.c @@ -3,6 +3,7 @@ * * Copyright (C) 2007-2009 coresystems GmbH * Copyright (C) 2011 Google Inc. + * Copyright (C) 2016 Siemens AG * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -29,7 +30,10 @@ #include <arch/io.h> #include <arch/interrupt.h> #include <boot/coreboot_tables.h> +#include <hwilib.h>
+#define MAX_PATH_DEPTH 14 +#define MAX_NUM_MAPPINGS 10 /* * mainboard_enable is executed as first thing after enumerate_buses(). * This is the earliest point to add customization. @@ -38,6 +42,76 @@ static void mainboard_enable(device_t dev) {
} +/** \brief This function can decide if a given MAC address is valid or not. + * Currently, addresses filled with 0xff or 0x00 are not valid. + * @param mac Buffer to the MAC address to check + * @return 0 if address is not valid, otherwise 1 + */ +static uint8_t is_mac_adr_valid(uint8_t mac[6]) +{ + uint8_t buf[6]; + + memset(buf, 0, sizeof(buf)); + if (!memcmp(buf, mac, sizeof(buf))) + return 0; + memset(buf, 0xff, sizeof(buf)); + if (!memcmp(buf, mac, sizeof(buf))) + return 0; + return 1; +} + /** \brief This function will search for a MAC address which can be assigned + * to a MACPHY. + * @param dev pointer to PCI device + * @param mac buffer where to store the MAC address + * @return cb_err CB_ERR or CB_SUCCESS + */ +extern enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[6]) +{ + struct bus *parent = dev->bus; + uint8_t buf[16], mapping[16], i = 0, chain_len = 0; + + memset(buf, 0, sizeof(buf)); + memset(mapping, 0, sizeof(mapping)); + + /* The first entry in the tree is the device itself. */ + buf[0] = dev->path.pci.devfn; + for (i = 1; i < MAX_PATH_DEPTH && parent->dev->bus->subordinate; i++) { + buf[i] = parent->dev->path.pci.devfn; + parent = parent->dev->bus; + } + if (i == MAX_PATH_DEPTH) { + /* The path is deeper than MAX_PATH_DEPTH devices, error. */ + printk(BIOS_ERR, "Too many bridges for %s\n", dev_path(dev)); + return CB_ERR; + } + chain_len = i; + /* Now construct the mapping based on the device chain starting from */ + /* root bridge device to the device itself. */ + mapping[0] = 1; + mapping[1] = chain_len; + for (i = 1; i <= chain_len; i++) + mapping[i + 3] = buf[chain_len - i]; + + /* Open main hwinfo block */ + if (hwilib_find_blocks("hwinfo.hex") != CB_SUCCESS) + return CB_ERR; + /* Now try to find a valid MAC address in hwinfo for this mapping.*/ + for (i = 0; i < MAX_NUM_MAPPINGS; i++) { + if ((hwilib_get_field(XMac1Mapping + i, buf, 16) == 16) && + !(memcmp(buf, mapping, chain_len + 4))) { + /* There is a matching mapping available, get MAC address. */ + if ((hwilib_get_field(XMac1 + i, mac, 6) == 6) && + (is_mac_adr_valid(mac))) { + return CB_SUCCESS; + } else { + return CB_ERR; + } + } else + continue; + } + /* No MAC address found for */ + return CB_ERR; +}
struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable,