[coreboot] r928 - in coreboot-v3/southbridge: . via via/vt8237
svn at coreboot.org
svn at coreboot.org
Tue Oct 14 20:26:09 CEST 2008
Author: cozzie
Date: 2008-10-14 20:26:09 +0200 (Tue, 14 Oct 2008)
New Revision: 928
Added:
coreboot-v3/southbridge/via/
coreboot-v3/southbridge/via/vt8237/
coreboot-v3/southbridge/via/vt8237/Makefile
coreboot-v3/southbridge/via/vt8237/stage1.c
coreboot-v3/southbridge/via/vt8237/vt8237.h
Log:
Add stage1 support for vt8237[RS] to v3.
Signed-off-by: Corey Osgood <corey.osgood at gmail.com>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net>
Added: coreboot-v3/southbridge/via/vt8237/Makefile
===================================================================
--- coreboot-v3/southbridge/via/vt8237/Makefile (rev 0)
+++ coreboot-v3/southbridge/via/vt8237/Makefile 2008-10-14 18:26:09 UTC (rev 928)
@@ -0,0 +1,25 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2008 Corey Osgood <corey.osgood at gmail.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; either version 2 of the License, or
+## (at your option) any later version.
+##
+## 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.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+
+ifeq ($(CONFIG_SOUTHBRIDGE_VIA_VT8237),y)
+
+STAGE2_CHIPSET_SRC +=
+
+endif
Added: coreboot-v3/southbridge/via/vt8237/stage1.c
===================================================================
--- coreboot-v3/southbridge/via/vt8237/stage1.c (rev 0)
+++ coreboot-v3/southbridge/via/vt8237/stage1.c 2008-10-14 18:26:09 UTC (rev 928)
@@ -0,0 +1,318 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2008 Corey Osgood <corey.osgood at gmail.com>
+ * Copyright (C) 2007 Rudolf Marek <r.marek at assembler.cz>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <types.h>
+#include <lib.h>
+#include <console.h>
+#include <device/pci.h>
+#include <io.h>
+#include <device/pci_ids.h>
+#include <spd.h>
+#include "vt8237.h"
+
+/* TODO List:
+ * * Merge the rest of the functions from v2, except smbus_fixup which doesn't
+ * seem to be necessary any more (?)
+ * * Clean up vt8237_early_network_init.
+ * Comments in code indicate that it's broken?
+ * * Figure out if the smbus actually needs to be reset after every transaction.
+ */
+
+/**
+ * Print an error, should it occur. If no error, just exit.
+ *
+ * @param host_status The data returned on the host status register after
+ * a transaction is processed.
+ * @param loops The number of times a transaction was attempted.
+ */
+static void smbus_print_error(u8 host_status, int loops)
+{
+ /* Check if there actually was an error. */
+ if ((host_status == 0x00 || host_status == 0x40 ||
+ host_status == 0x42) && (loops < SMBUS_TIMEOUT))
+ {
+ printk(BIOS_SPEW, "SMBus Ready/Completed Successfully\n");
+ return;
+ }
+ if (loops >= SMBUS_TIMEOUT)
+ printk(BIOS_ERR, "SMBus Timed out\n");
+ if (host_status & (1 << 4))
+ printk(BIOS_ERR, "Interrupt/SMI# was Failed Bus Transaction\n");
+ if (host_status & (1 << 3))
+ printk(BIOS_ERR, "Bus error\n");
+ if (host_status & (1 << 2))
+ printk(BIOS_ERR, "Device error\n");
+ if (host_status & (1 << 1))
+ printk(BIOS_SPEW, "Interrupt/SMI# completed successfully\n");
+ if (host_status & (1 << 0))
+ printk(BIOS_ERR, "Host busy\n");
+}
+
+/**
+ * Reset and take ownership of the SMBus.
+ */
+static void smbus_reset(u16 smbus_io_base)
+{
+ outb(HOST_RESET, smbus_io_base + SMBHSTSTAT);
+
+ /* Datasheet says we have to read it to take ownership of SMBus. */
+ smbus_print_error(inb(smbus_io_base + SMBHSTSTAT), 0);
+}
+
+/**
+ * Wait for the SMBus to become ready to process the next transaction.
+ */
+static void smbus_wait_until_ready(u16 smbus_io_base)
+{
+ int loops;
+
+ printk(BIOS_SPEW, "Waiting until SMBus ready\n");
+
+ loops = 0;
+ while ((inb(smbus_io_base + SMBHSTSTAT) & 1) == 1 && loops <= SMBUS_TIMEOUT)
+ ++loops;
+
+ smbus_print_error(inb(smbus_io_base + SMBHSTSTAT), loops);
+}
+
+/**
+ * Read a byte from the SMBus.
+ *
+ * @param dimm The address location of the DIMM on the SMBus.
+ * @param offset The offset the data is located at.
+ */
+u8 smbus_read_byte(u16 dimm, u8 offset, u16 smbus_io_base)
+{
+ u8 val;
+
+ printk(BIOS_SPEW, "SMBus Read from DIMM %d at address 0x%x\n",
+ (int)dimm, offset);
+
+ smbus_reset(smbus_io_base);
+
+ /* Clear host data port. */
+ outb(0x00, smbus_io_base + SMBHSTDAT0);
+ /* Doesn't seem to be necessary...*/
+ /* udelay(1); */
+ smbus_wait_until_ready(smbus_io_base);
+
+ /* With this, addresses are 0x50, 0x51, etc. Without it,
+ * addresses would be 0xa1, 0xa3, etc */
+ dimm = (dimm << 1) | 1;
+
+ outb(dimm, smbus_io_base + SMBXMITADD);
+ outb(offset, smbus_io_base + SMBHSTCMD);
+
+ /* Start transaction, byte data read. */
+ outb(0x48, smbus_io_base + SMBHSTCTL);
+ /* udelay(1); */
+ smbus_wait_until_ready(smbus_io_base);
+
+ val = inb(smbus_io_base + SMBHSTDAT0);
+ printk(BIOS_SPEW, "Read: 0x%x\n", val);
+
+ /* TODO: Is this necessary? */
+ smbus_reset(smbus_io_base);
+
+ return val;
+}
+
+/**
+ * Enable the smbus on vt8237-based systems
+ *
+ * @param smbus_io_base: The SMBus I/O base, usually 0x400
+ */
+void enable_smbus(u16 smbus_io_base)
+{
+ u32 dev;
+
+ /* Power management controller */
+ pci_conf1_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT8237R_LPC,
+ &dev);
+
+ if (!dev) {
+ /* Power management controller */
+ pci_conf1_find_device(PCI_VENDOR_ID_VIA,
+ PCI_DEVICE_ID_VIA_VT8237S_LPC, &dev);
+ if (!dev)
+ {
+ printk(BIOS_ERR, "Power management controller not "
+ "found! Using hardcoded default.\n");
+ dev = PCI_BDF(0, 17, 0);
+ } else {
+ printk(BIOS_DEBUG, "VT8237S Power management "
+ "controller found at 0x%x\n", dev);
+ }
+ } else {
+ printk(BIOS_DEBUG, "VT8237R Power management controller found "
+ "at 0x%x\n", dev);
+ }
+
+ /* 7 = SMBus Clock from RTC 32.768KHz
+ * 5 = Internal PLL reset from susp
+ */
+ pci_conf1_write_config8(dev, VT8237R_POWER_WELL, 0xa0);
+
+ /* Enable SMBus. */
+ pci_conf1_write_config16(dev, VT8237R_SMBUS_IO_BASE_REG,
+ smbus_io_base | 0x1);
+
+ /* SMBus Host Configuration, enable. */
+ pci_conf1_write_config8(dev, VT8237R_SMBUS_HOST_CONF, 0x01);
+
+ /* Make it work for I/O. */
+ pci_conf1_write_config16(dev, PCI_COMMAND, PCI_COMMAND_IO);
+
+ /* reset smbus */
+ smbus_reset(smbus_io_base);
+
+ /* Reset the internal pointer. */
+ inb(smbus_io_base + SMBHSTCTL);
+}
+
+/* TODO:
+ * Magic numbers -> #defines
+ * fix?
+ * clean up
+ */
+
+/* offset 0x58
+ * 31:20 reserved
+ * 19:16 4 bit position in shadow EEPROM
+ * 15:0 data to write
+ *
+ * offset 0x5c
+ * 31:28 reserved
+ * 27 ERDBG - enable read from 0x5c
+ * 26 reserved
+ * 25 SEELD
+ * 24 SEEPR - write 1 when done updating, wait until SEELD is set to 1, sticky
+ * cleared by reset, if it is 1 writing is disabled
+ * 19:16 4 bit position in shadow EEPROM
+ * 15:0 data from shadow EEPROM
+ *
+ * after PCIRESET SEELD and SEEPR must be 1 and 1
+*/
+
+/* 1 = needs PCI reset, 0 don't reset, network initialized */
+
+/* fixme maybe close the debug register after use? */
+
+#define LAN_TIMEOUT 0x7FFFFFFF
+
+int vt8237_early_network_init(struct vt8237_network_rom *rom) {
+ struct vt8237_network_rom n;
+ int loops = 0;
+ u32 dev;
+ u32 tmp;
+ u8 status;
+ u16 *rom_write;
+ unsigned int checksum;
+ int i;
+
+ /* Network adapter */
+ pci_conf1_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT8237_LAN,
+ &dev);
+
+ if (!dev) {
+ printk(BIOS_ERR, "Network is disabled, please enable\n");
+ return 0;
+ }
+
+ tmp = pci_conf1_read_config32(dev, 0x5c);
+ /* enable ERDBG */
+ tmp |= 0x08000000;
+ pci_conf1_write_config32(dev, 0x5c, tmp);
+
+ status = ((pci_conf1_read_config32(dev, 0x5c) >> 24) & 0x3);
+
+ if (status == 3) {
+ /* network controller OK, EEPROM loaded */
+ return 0;
+ }
+
+ if (rom == NULL) {
+ printk(BIOS_ERR, "No configuration data specified, using default MAC!\n");
+ n.mac_address[0] = 0x0;
+ n.mac_address[1] = 0x0;
+ n.mac_address[2] = 0xde;
+ n.mac_address[3] = 0xad;
+ n.mac_address[4] = 0xbe;
+ n.mac_address[5] = 0xef;
+ n.phy_addr = 0x1;
+ n.res1 = 0x0;
+ n.sub_sid = 0x102;
+ n.sub_vid = 0x1106;
+ n.pid = 0x3065;
+ n.vid = 0x1106;
+ n.pmcc = 0x1f;
+ n.data_sel = 0x10;
+ n.pmu_data_reg = 0x0;
+ n.aux_curr = 0x0;
+ n.reserved = 0x0;
+ n.min_gnt = 0x3;
+ n.max_lat = 0x8;
+ n.bcr0 = 0x9;
+ n.bcr1 = 0xe;
+ n.cfg_a = 0x3;
+ n.cfg_b = 0x0;
+ n.cfg_c = 0x40;
+ n.cfg_d = 0x82;
+ n.checksum = 0x0;
+ rom = &n;
+ }
+
+ rom_write = (u16 *) rom;
+ checksum = 0;
+ /* write all data except checksum and second to last byte */
+ tmp &= 0xff000000; /* leave reserved bits in */
+ for (i = 0; i < 15; i++) {
+ pci_conf1_write_config32(dev, 0x58, tmp | (i << 16) | rom_write[i]);
+ /* lame code fixme */
+ checksum += rom_write[i] & 0xff;
+ //checksum %= 256;
+ checksum += (rom_write[i] >> 8) & 0xff;
+ //checksum %= 256;
+ }
+
+ checksum += (rom_write[15] & 0xff);
+ checksum = ~(checksum & 0xff);
+ tmp |= (((checksum & 0xff) << 8) | rom_write[15]);
+
+ /* write last byte and checksum */
+ pci_conf1_write_config32(dev, 0x58, (15 << 16) | tmp);
+
+ tmp = pci_conf1_read_config32(dev, 0x5c);
+ pci_conf1_write_config32(dev, 0x5c, tmp | 0x01000000); /* toggle SEEPR */
+
+ /* Yes, this is a mess, but it's the easiest way to do it. */
+ while ( (((pci_conf1_read_config32(dev, 0x5c) >> 25) & 1) == 0)
+ && (loops < LAN_TIMEOUT))
+ ++loops;
+
+ if (loops >= LAN_TIMEOUT) {
+ printk(BIOS_ERR, "Timout - LAN controller did not accept configuration\n");
+ return 0;
+ }
+
+ /* we are done, config will be used after PCIRST# */
+ return 1;
+}
Added: coreboot-v3/southbridge/via/vt8237/vt8237.h
===================================================================
--- coreboot-v3/southbridge/via/vt8237/vt8237.h (rev 0)
+++ coreboot-v3/southbridge/via/vt8237/vt8237.h 2008-10-14 18:26:09 UTC (rev 928)
@@ -0,0 +1,90 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007 Rudolf Marek <r.marek at assembler.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License v2 as published by
+ * the Free Software Foundation.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef SOUTHBRIDGE_VIA_VT8237_VT8237_H
+#define SOUTHBRIDGE_VIA_VT8237_VT8237_H
+
+#include <types.h>
+
+/* Static resources for the VT8237R southbridge */
+
+#define VT8237R_APIC_ID 0x2
+#define VT8237R_ACPI_IO_BASE 0x500
+/* 0x0 disabled, 0x2 reserved, 0xf = IRQ15 */
+#define VT8237R_ACPI_IRQ 0x9
+#define VT8237S_SPI_MEM_BASE 0xfed02000ULL
+#define VT8237R_HPET_ADDR 0xfed00000ULL
+#define VT8237R_APIC_BASE 0xfec00000ULL
+
+/* IDE */
+#define IDE_CS 0x40
+#define IDE_CONF_I 0x41
+#define IDE_CONF_II 0x42
+#define IDE_CONF_FIFO 0x43
+#define IDE_MISC_I 0x44
+#define IDE_MISC_II 0x45
+#define IDE_UDMA 0x50
+
+/* SMBus */
+#define VT8237R_POWER_WELL 0x94
+#define VT8237R_SMBUS_IO_BASE_REG 0xd0
+#define VT8237R_SMBUS_HOST_CONF 0xd2
+
+#define SMBHSTSTAT 0x0
+#define SMBSLVSTAT 0x1
+#define SMBHSTCTL 0x2
+#define SMBHSTCMD 0x3
+#define SMBXMITADD 0x4
+#define SMBHSTDAT0 0x5
+
+#define HOST_RESET 0xff
+/* 1 in the 0 bit of SMBHSTADD states to READ. */
+#define READ_CMD 0x01
+#define SMBUS_TIMEOUT (100 * 1000 * 10)
+#define I2C_TRANS_CMD 0x40
+#define CLOCK_SLAVE_ADDRESS 0x69
+
+struct vt8237_network_rom {
+ u8 mac_address[6];
+ u8 phy_addr;
+ u8 res1;
+ u16 sub_sid;
+ u16 sub_vid;
+ u16 pid;
+ u16 vid;
+ u8 pmcc;
+ u8 data_sel;
+ u8 pmu_data_reg;
+ u8 aux_curr;
+ u16 reserved;
+ u8 min_gnt;
+ u8 max_lat;
+ u8 bcr0;
+ u8 bcr1;
+ u8 cfg_a;
+ u8 cfg_b;
+ u8 cfg_c;
+ u8 cfg_d;
+ u8 checksum;
+} __attribute__ ((packed));
+
+void enable_smbus(u16);
+u8 smbus_read_byte(u16, u8, u16);
+
+#endif
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