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/*
* This file is part of the coreboot project.
*
* 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 <device/pci_ops.h>
#include "i82801gx.h"
#include "chip.h"
void i82801gx_lpc_setup(void)
{
const pci_devfn_t d31f0 = PCI_DEV(0, 0x1f, 0);
const struct device *dev = pcidev_on_root(0x1f, 0);
const struct southbridge_intel_i82801gx_config *config;
/* Configure serial IRQs.*/
pci_write_config8(d31f0, SERIRQ_CNTL, 0xd0);
/*
* Enable some common LPC IO ranges:
* - 0x2e/0x2f, 0x4e/0x4f often SuperIO
* - 0x60/0x64, 0x62/0x66 often KBC/EC
* - 0x3f0-0x3f5/0x3f7 FDD
* - 0x378-0x37f and 0x778-0x77f LPT
* - 0x2f8-0x2ff COMB
* - 0x3f8-0x3ff COMA
* - 0x208-0x20f GAMEH
* - 0x200-0x207 GAMEL
*/
pci_write_config16(d31f0, LPC_IO_DEC, 0x0010);
pci_write_config16(d31f0, LPC_EN, CNF2_LPC_EN | CNF1_LPC_EN
| MC_LPC_EN | KBC_LPC_EN | GAMEH_LPC_EN
| GAMEL_LPC_EN | FDD_LPC_EN | LPT_LPC_EN
| COMB_LPC_EN | COMA_LPC_EN);
/* Set up generic decode ranges */
if (!dev || !dev->chip_info)
return;
config = dev->chip_info;
pci_write_config32(d31f0, GEN1_DEC, config->gen1_dec);
pci_write_config32(d31f0, GEN2_DEC, config->gen2_dec);
pci_write_config32(d31f0, GEN3_DEC, config->gen3_dec);
pci_write_config32(d31f0, GEN4_DEC, config->gen4_dec);
}
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