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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007 Rudolf Marek <r.marek@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; 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.
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include "vt8237r.h"
#include "chip.h"
/*
* Datasheet: http://www.via.com.tw/en/downloads/datasheets/chipsets/
* VT8237R_SouthBridge_Revision2.06_Lead-Free.zip
*/
#if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 7
void writeback(struct device *dev, u16 where, u8 what)
{
u8 regval;
pci_write_config8(dev, where, what);
regval = pci_read_config8(dev, where);
if (regval != what)
printk(BIOS_DEBUG, "Writeback to %02x failed %02x\n",
where, regval);
}
#else
void writeback(struct device *dev, u16 where, u8 what)
{
pci_write_config8(dev, where, what);
}
#endif
void dump_south(device_t dev)
{
int i, j;
for (i = 0; i < 256; i += 16) {
printk(BIOS_DEBUG, "%02x: ", i);
for (j = 0; j < 16; j++)
printk(BIOS_DEBUG, "%02x ", pci_read_config8(dev, i + j));
printk(BIOS_DEBUG, "\n");
}
}
static void vt8237r_enable(struct device *dev)
{
u16 vid, did;
struct southbridge_via_vt8237r_config *sb =
(struct southbridge_via_vt8237r_config *)dev->chip_info;
if (dev->path.type == DEVICE_PATH_PCI) {
vid = pci_read_config16(dev, PCI_VENDOR_ID);
did = pci_read_config16(dev, PCI_DEVICE_ID);
if (vid == PCI_VENDOR_ID_VIA &&
(did == PCI_DEVICE_ID_VIA_VT8237R_LPC ||
did == PCI_DEVICE_ID_VIA_VT8237A_LPC ||
did == PCI_DEVICE_ID_VIA_VT8237S_LPC)) {
pci_write_config8(dev, 0x50, sb->fn_ctrl_lo);
pci_write_config8(dev, 0x51, sb->fn_ctrl_hi);
}
}
/* TODO: If SATA is disabled, move IDE to fn0 to conform PCI specs. */
}
struct chip_operations southbridge_via_vt8237r_ops = {
CHIP_NAME("VIA VT8237R Southbridge")
.enable_dev = vt8237r_enable,
};
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