diff options
| -rw-r--r-- | src/drivers/net/Kconfig | 5 | ||||
| -rw-r--r-- | src/drivers/net/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/drivers/net/r8168.c | 94 |
3 files changed, 100 insertions, 0 deletions
diff --git a/src/drivers/net/Kconfig b/src/drivers/net/Kconfig new file mode 100644 index 0000000000..b4bafd2d4c --- /dev/null +++ b/src/drivers/net/Kconfig @@ -0,0 +1,5 @@ +config REALTEK_8168_RESET + bool "Realtek 8168 reset" + help + This forces a realtek 10ec:8168 card to reset to ensure power state + is correct at boot. diff --git a/src/drivers/net/Makefile.inc b/src/drivers/net/Makefile.inc index 9b3008dd8b..e435d483e7 100644 --- a/src/drivers/net/Makefile.inc +++ b/src/drivers/net/Makefile.inc @@ -1,2 +1,3 @@ romstage-$(CONFIG_CONSOLE_NE2K) += ne2k.c ramstage-$(CONFIG_CONSOLE_NE2K) += ne2k.c +ramstage-$(CONFIG_REALTEK_8168_RESET) += r8168.c diff --git a/src/drivers/net/r8168.c b/src/drivers/net/r8168.c new file mode 100644 index 0000000000..43016935e6 --- /dev/null +++ b/src/drivers/net/r8168.c @@ -0,0 +1,94 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Damien Zammit <damien@zamaudio.com> + * + * 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 + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* + * This driver forces the 10ec:8168 device to reset so that it goes + * into a proper power state, also programs a default MAC address + * so that if the EEPROM/efuse is unconfigured it still has a default MAC. + */ + +#include <arch/io.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ops.h> +#include <device/pci_def.h> +#include <delay.h> +#include <console/console.h> + +#define NIC_TIMEOUT 1000 + +#define CMD_REG 0x37 +#define CMD_REG_RESET 0x10 + +#define CFG_9346 0x50 +#define CFG_9346_LOCK 0x00 +#define CFG_9346_UNLOCK 0xc0 + +static void r8168_init(struct device *dev) +{ + u32 i; + const u8 mac[6] = { 0x00, 0xe0, 0x4c, 0x00, 0xc0, 0xb0 }; + + /* Get the resource of the NIC mmio */ + struct resource *nic_res = find_resource(dev, PCI_BASE_ADDRESS_0); + u16 nic_port = (u16)nic_res->base; + + /* Set bus master */ + pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER + | PCI_COMMAND_MEMORY | PCI_COMMAND_IO); + + /* Reset NIC */ + printk(BIOS_DEBUG, "r8168: Resetting NIC..."); + outb(CMD_REG_RESET, nic_port + CMD_REG); + + i = 0; + /* Poll for reset, with 1s timeout */ + while (i < NIC_TIMEOUT && (inb(nic_port + CMD_REG) & CMD_REG_RESET)) { + udelay(1000); + if (++i >= NIC_TIMEOUT) + printk(BIOS_DEBUG, "timeout waiting for nic to reset\n"); + } + if (i < NIC_TIMEOUT) + printk(BIOS_DEBUG, "done\n"); + + /* Unlock config regs */ + outb(CFG_9346_UNLOCK, nic_port + CFG_9346); + + /* Set MAC address 00:e0:4c:00:c0:b0 + * NB: only 4-byte write accesses allowed + */ + outl(mac[4] | mac[5] << 8, nic_port + 4); + inl(nic_port + 4); + + outl(mac[0] | mac[1] << 8 | mac[2] << 16 | mac[3] << 24, nic_port); + inl(nic_port); + + /* Lock config regs */ + outb(CFG_9346_LOCK, nic_port + CFG_9346); +} + +static struct device_operations r8168_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = r8168_init, + .scan_bus = 0, +}; + +static const struct pci_driver r8168_driver __pci_driver = { + .ops = &r8168_ops, + .vendor = 0x10ec, + .device = 0x8168, +}; |