| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2010 Advanced Micro Devices, Inc. |
| * |
| * 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. |
| */ |
| |
| #ifndef _HUDSON_EARLY_SETUP_C_ |
| #define _HUDSON_EARLY_SETUP_C_ |
| |
| #include <stdint.h> |
| #include <arch/io.h> |
| #include <arch/acpi.h> |
| #include <console/console.h> |
| #include <reset.h> |
| #include <arch/cpu.h> |
| #include <cbmem.h> |
| #include "hudson.h" |
| |
| void hudson_pci_port80(void) |
| { |
| u8 byte; |
| pci_devfn_t dev; |
| |
| /* P2P Bridge */ |
| dev = PCI_DEV(0, 0x14, 4); |
| |
| /* Chip Control: Enable subtractive decoding */ |
| byte = pci_read_config8(dev, 0x40); |
| byte |= 1 << 5; |
| pci_write_config8(dev, 0x40, byte); |
| |
| /* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */ |
| byte = pci_read_config8(dev, 0x4B); |
| byte |= 1 << 7; |
| pci_write_config8(dev, 0x4B, byte); |
| |
| /* The same IO Base and IO Limit here is meaningful because we set the |
| * bridge to be subtractive. During early setup stage, we have to make |
| * sure that data can go through port 0x80. |
| */ |
| /* IO Base: 0xf000 */ |
| byte = pci_read_config8(dev, 0x1C); |
| byte |= 0xF << 4; |
| pci_write_config8(dev, 0x1C, byte); |
| |
| /* IO Limit: 0xf000 */ |
| byte = pci_read_config8(dev, 0x1D); |
| byte |= 0xF << 4; |
| pci_write_config8(dev, 0x1D, byte); |
| |
| /* PCI Command: Enable IO response */ |
| byte = pci_read_config8(dev, 0x04); |
| byte |= 1 << 0; |
| pci_write_config8(dev, 0x04, byte); |
| |
| /* LPC controller */ |
| dev = PCI_DEV(0, 0x14, 3); |
| |
| byte = pci_read_config8(dev, 0x4A); |
| byte &= ~(1 << 5); /* disable lpc port 80 */ |
| pci_write_config8(dev, 0x4A, byte); |
| } |
| |
| void hudson_lpc_port80(void) |
| { |
| u8 byte; |
| pci_devfn_t dev; |
| |
| /* Enable LPC controller */ |
| outb(0xEC, 0xCD6); |
| byte = inb(0xCD7); |
| byte |= 1; |
| outb(0xEC, 0xCD6); |
| outb(byte, 0xCD7); |
| |
| /* Enable port 80 LPC decode in pci function 3 configuration space. */ |
| dev = PCI_DEV(0, 0x14, 3); |
| byte = pci_read_config8(dev, 0x4a); |
| byte |= 1 << 5; /* enable port 80 */ |
| pci_write_config8(dev, 0x4a, byte); |
| } |
| |
| int s3_save_nvram_early(u32 dword, int size, int nvram_pos) |
| { |
| int i; |
| printk(BIOS_DEBUG, "Writing %x of size %d to nvram pos: %d\n", dword, size, nvram_pos); |
| |
| for (i = 0; i < size; i++) { |
| outb(nvram_pos, BIOSRAM_INDEX); |
| outb((dword >> (8 * i)) & 0xff, BIOSRAM_DATA); |
| nvram_pos++; |
| } |
| |
| return nvram_pos; |
| } |
| |
| int s3_load_nvram_early(int size, u32 *old_dword, int nvram_pos) |
| { |
| u32 data = *old_dword; |
| int i; |
| for (i = 0; i < size; i++) { |
| outb(nvram_pos, BIOSRAM_INDEX); |
| data &= ~(0xff << (i * 8)); |
| data |= inb(BIOSRAM_DATA) << (i *8); |
| nvram_pos++; |
| } |
| *old_dword = data; |
| printk(BIOS_DEBUG, "Loading %x of size %d to nvram pos:%d\n", *old_dword, size, |
| nvram_pos-size); |
| return nvram_pos; |
| } |
| |
| #endif /* _HUDSON_EARLY_SETUP_C_ */ |