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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2006 AMD
* Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
* Copyright (C) 2007 Silicon Integrated Systems Corp. (SiS)
* Written by Morgan Tsai <my_tsai@sis.com> for SiS.
*
* 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.
*/
void sis966_early_pcie_setup(unsigned busnx, unsigned devnx, unsigned anactrl_io_base, unsigned pci_e_x)
{
uint32_t tgio_ctrl;
uint32_t pll_ctrl;
uint32_t dword;
int i;
device_t dev;
dev = PCI_DEV(busnx, devnx+1, 1);
dword = pci_read_config32(dev, 0xe4);
dword |= 0x3f0; // disable it at first
pci_write_config32(dev, 0xe4, dword);
for(i=0; i<3; i++) {
tgio_ctrl = inl(anactrl_io_base + 0xcc);
tgio_ctrl &= ~(3<<9);
tgio_ctrl |= (i<<9);
outl(tgio_ctrl, anactrl_io_base + 0xcc);
pll_ctrl = inl(anactrl_io_base + 0x30);
pll_ctrl |= (1<<31);
outl(pll_ctrl, anactrl_io_base + 0x30);
do {
pll_ctrl = inl(anactrl_io_base + 0x30);
} while (!(pll_ctrl & 1));
}
tgio_ctrl = inl(anactrl_io_base + 0xcc);
tgio_ctrl &= ~((7<<4)|(1<<8));
tgio_ctrl |= (pci_e_x<<4)|(1<<8);
outl(tgio_ctrl, anactrl_io_base + 0xcc);
// wait 100us
udelay(100);
dword = pci_read_config32(dev, 0xe4);
dword &= ~(0x3f0); // enable
pci_write_config32(dev, 0xe4, dword);
// need to wait 100ms
mdelay(100);
}
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