beltino: Set ethernet MAC address from VPD
The RTL8111 used on Beltino does not come with a preprogrammed
MAC address, so nobody will talk to it on the network. This patch
sets the MAC address from a value set in VPD. To set a VPD address
use the ChromeOS vpd command:
# vpd -s ethernet_mac=C8:D7:19:D8:07:01
BUG=none
BRANCH=none
TEST=boot ChromeOS after setting MAC address and observe ethernet
port is working reliably.
Change-Id: I9561cdd264d9fceaf9b89c9a76644824565f4c09
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: https://chromium-review.googlesource.com/173581
Tested-by: Stefan Reinauer <reinauer@chromium.org>
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Commit-Queue: David James <davidjames@chromium.org>
This commit is contained in:
Stefan Reinauer
chrome-internal-fetch
parent
a1a55a9530
commit
ff5bd86c3a
4 changed files with 190 additions and 1 deletions
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@ -19,6 +19,7 @@
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romstage-$(CONFIG_CHROMEOS) += chromeos.c
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ramstage-$(CONFIG_CHROMEOS) += chromeos.c
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ramstage-y += lan.c
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smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c
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178
src/mainboard/google/beltino/lan.c
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178
src/mainboard/google/beltino/lan.c
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@ -0,0 +1,178 @@
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2012 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <types.h>
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#include <string.h>
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#include <arch/io.h>
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#include <console/console.h>
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#include <device/device.h>
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#include <device/pci.h>
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#include <southbridge/intel/bd82x6x/pch.h>
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#include <vendorcode/google/chromeos/fmap.h>
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#include "onboard.h"
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static unsigned int search(char *p, char *a, unsigned int lengthp,
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unsigned int lengtha)
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{
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int i, j;
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/* Searching */
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for (j = 0; j <= lengtha - lengthp; j++) {
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for (i = 0; i < lengthp && p[i] == a[i + j]; i++) ;
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if (i >= lengthp)
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return j;
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}
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return lengtha;
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}
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static unsigned char get_hex_digit(char *offset)
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{
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unsigned char retval = 0;
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retval = *offset - '0';
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if (retval > 0x09) {
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retval = *offset - 'A' + 0x0A;
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if (retval > 0x0F)
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retval = *offset - 'a' + 0x0a;
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}
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if (retval > 0x0F) {
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printk(BIOS_DEBUG, "Error: Invalid Hex digit found: %c - 0x%02x\n",
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*offset, (unsigned char)*offset);
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retval = 0;
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}
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return retval;
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}
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static int get_mac_address(u32 *high_dword, u32 *low_dword,
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u32 search_address, u32 search_length)
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{
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char key[] = "ethernet_mac";
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unsigned int offset;
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int i;
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offset = search(key, (char *)search_address,
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sizeof(key) - 1, search_length);
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if (offset == search_length) {
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printk(BIOS_DEBUG,
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"Error: Could not locate '%s' in VPD\n", key);
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return 0;
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}
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printk(BIOS_DEBUG, "Located '%s' in VPD\n", key);
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offset += sizeof(key); /* move to next character */
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*high_dword = 0;
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/* Fetch the MAC address and put the octets in the correct order to
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* be programmed.
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*
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* From RTL8105E_Series_EEPROM-Less_App_Note_1.1
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* If the MAC address is 001122334455h:
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* Write 33221100h to I/O register offset 0x00 via double word access
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* Write 00005544h to I/O register offset 0x04 via double word access
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*/
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for (i = 0; i < 4; i++) {
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*high_dword |= (get_hex_digit((char *)(search_address + offset))
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<< (4 + (i * 8)));
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*high_dword |= (get_hex_digit((char *)(search_address + offset + 1))
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<< (i * 8));
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offset += 3;
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}
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*low_dword = 0;
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for (i = 0; i < 2; i++) {
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*low_dword |= (get_hex_digit((char *)(search_address + offset))
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<< (4 + (i * 8)));
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*low_dword |= (get_hex_digit((char *)(search_address + offset + 1))
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<< (i * 8));
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offset += 3;
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}
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return *high_dword | *low_dword;
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}
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static void program_mac_address(u16 io_base, u32 search_address,
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u32 search_length)
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{
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/* Default MAC Address of A0:00:BA:D0:0B:AD */
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u32 high_dword = 0xD0BA00A0; /* high dword of mac address */
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u32 low_dword = 0x0000AD0B; /* low word of mac address as a dword */
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if (search_length != -1)
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get_mac_address(&high_dword, &low_dword, search_address,
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search_length);
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if (io_base) {
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printk(BIOS_DEBUG, "Realtek NIC io_base = 0x%04x\n", io_base);
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printk(BIOS_DEBUG, "Programming MAC Address\n");
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outb(0xc0, io_base + 0x50); /* Disable register protection */
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outl(high_dword, io_base);
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outl(low_dword, io_base + 0x04);
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outb(0x60, io_base + 54);
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outb(0x00, io_base + 0x50); /* Enable register protection again */
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}
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}
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void lan_init(void)
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{
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char **vpd_region_ptr = NULL;
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u32 search_length = find_fmap_entry("RO_VPD", (void **)vpd_region_ptr);
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u32 search_address = (unsigned long)(*vpd_region_ptr);
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u16 io_base = 0;
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struct device *ethernet_dev = NULL;
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/* Get NIC's IO base address */
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ethernet_dev = dev_find_device(BELTINO_NIC_VENDOR_ID,
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BELTINO_NIC_DEVICE_ID, 0);
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if (ethernet_dev != NULL) {
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io_base = pci_read_config16(ethernet_dev, 0x10) & 0xfffe;
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/*
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* Battery life time - LAN PCIe should enter ASPM L1 to save
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* power when LAN connection is idle.
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* enable CLKREQ: LAN pci config space 0x81h=01
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*/
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pci_write_config8(ethernet_dev, 0x81, 0x01);
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}
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if (io_base) {
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/* Program MAC address based on VPD data */
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program_mac_address(io_base, search_address, search_length);
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/*
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* Program NIC LEDS
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*
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* RTL8105E Series EEPROM-Less Application Note,
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* Section 5.6 LED Mode Configuration
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*
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* Step1: Write C0h to I/O register 0x50 via byte access to
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* disable 'register protection'
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* Step2: Write xx001111b to I/O register 0x52 via byte access
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* (bit7 is LEDS1 and bit6 is LEDS0)
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* Step3: Write 0x00 to I/O register 0x50 via byte access to
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* enable 'register protection'
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*/
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outb(0xc0, io_base + 0x50); /* Disable protection */
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outb((BELTINO_NIC_LED_MODE << 6) | 0x0f, io_base + 0x52);
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outb(0x00, io_base + 0x50); /* Enable register protection */
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}
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}
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@ -35,6 +35,7 @@
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#include <arch/interrupt.h>
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#include <boot/coreboot_tables.h>
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#include "hda_verb.h"
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#include "onboard.h"
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#include <southbridge/intel/lynxpoint/pch.h>
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void mainboard_suspend_resume(void)
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@ -147,7 +148,7 @@ static void verb_setup(void)
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static void mainboard_init(device_t dev)
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{
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// nothing yet
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lan_init();
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}
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// mainboard_enable is executed as first thing after
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9
src/mainboard/google/beltino/onboard.h
Normal file
9
src/mainboard/google/beltino/onboard.h
Normal file
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@ -0,0 +1,9 @@
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void lan_init(void);
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/* defines for programming the MAC address */
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#define BELTINO_NIC_VENDOR_ID 0x10EC
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#define BELTINO_NIC_DEVICE_ID 0x8168
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/* 0x00: White LINK LED and Amber ACTIVE LED */
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#define BELTINO_NIC_LED_MODE 0x00
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