| /* |
| * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| static 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); |
| } |
| |