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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>
Reviewed-on: https://review.coreboot.org/15517
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
This commit is contained in:
Werner Zeh 2016-06-30 08:21:17 +02:00
parent e22d96c0f9
commit b2213edc65
2 changed files with 78 additions and 1 deletions
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2
src/mainboard/siemens/mc_bdx1/Kconfig
View File

@ -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

77
src/mainboard/siemens/mc_bdx1/mainboard.c
View File

@ -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
@ -17,7 +18,6 @@
#include <types.h>
#include <string.h>
#include <device/device.h>
#include <device/device.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <console/console.h>
@ -29,7 +29,11 @@
#include <arch/io.h>
#include <arch/interrupt.h>
#include <boot/coreboot_tables.h>
#include <hwilib.h>
#include <i210.h>
#define MAX_PATH_DEPTH 12
#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 +42,77 @@ 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
*/
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;
chain_len = 1;
for (i = 1; i < MAX_PATH_DEPTH && parent->dev->bus->subordinate; i++) {
buf[i] = parent->dev->path.pci.devfn;
chain_len++;
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;
}
/* 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 = 0; i < chain_len; i++)
mapping[i + 4] = buf[chain_len - i - 1];
/* 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,