547 lines
15 KiB
C
547 lines
15 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2000 Silicon Integrated System Corporation
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* Copyright (C) 2005-2007 coresystems GmbH <stepan@coresystems.de>
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* Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* Contains the chipset specific flash enables.
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*/
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#define _LARGEFILE64_SOURCE
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#include <stdio.h>
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#include <pci/pci.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "flash.h"
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static int enable_flash_ali_m1533(struct pci_dev *dev, const char *name)
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{
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uint8_t tmp;
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/*
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* ROM Write enable, 0xFFFC0000-0xFFFDFFFF and
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* 0xFFFE0000-0xFFFFFFFF ROM select enable.
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*/
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tmp = pci_read_byte(dev, 0x47);
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tmp |= 0x46;
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pci_write_byte(dev, 0x47, tmp);
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return 0;
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}
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static int enable_flash_sis630(struct pci_dev *dev, const char *name)
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{
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uint8_t b;
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/* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630. */
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b = pci_read_byte(dev, 0x40);
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pci_write_byte(dev, 0x40, b | 0xb);
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/* Flash write enable on SiS 540/630. */
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b = pci_read_byte(dev, 0x45);
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pci_write_byte(dev, 0x45, b | 0x40);
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/* The same thing on SiS 950 Super I/O side... */
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/* First probe for Super I/O on config port 0x2e. */
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outb(0x87, 0x2e);
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outb(0x01, 0x2e);
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outb(0x55, 0x2e);
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outb(0x55, 0x2e);
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if (inb(0x2f) != 0x87) {
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/* If that failed, try config port 0x4e. */
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outb(0x87, 0x4e);
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outb(0x01, 0x4e);
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outb(0x55, 0x4e);
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outb(0xaa, 0x4e);
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if (inb(0x4f) != 0x87) {
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printf("Can not access SiS 950\n");
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return -1;
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}
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outb(0x24, 0x4e);
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b = inb(0x4f) | 0xfc;
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outb(0x24, 0x4e);
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outb(b, 0x4f);
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outb(0x02, 0x4e);
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outb(0x02, 0x4f);
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}
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outb(0x24, 0x2e);
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printf("2f is %#x\n", inb(0x2f));
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b = inb(0x2f) | 0xfc;
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outb(0x24, 0x2e);
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outb(b, 0x2f);
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outb(0x02, 0x2e);
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outb(0x02, 0x2f);
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return 0;
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}
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/* Datasheet:
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* - Name: 82371AB PCI-TO-ISA / IDE XCELERATOR (PIIX4)
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* - URL: http://www.intel.com/design/intarch/datashts/290562.htm
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* - PDF: http://www.intel.com/design/intarch/datashts/29056201.pdf
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* - Order Number: 290562-001
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*/
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static int enable_flash_piix4(struct pci_dev *dev, const char *name)
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{
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uint16_t old, new;
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uint16_t xbcs = 0x4e; /* X-Bus Chip Select register. */
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old = pci_read_word(dev, xbcs);
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/* Set bit 9: 1-Meg Extended BIOS Enable (PCI master accesses to
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* FFF00000-FFF7FFFF are forwarded to ISA).
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* Set bit 7: Extended BIOS Enable (PCI master accesses to
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* FFF80000-FFFDFFFF are forwarded to ISA).
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* Set bit 6: Lower BIOS Enable (PCI master, or ISA master accesses to
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* the lower 64-Kbyte BIOS block (E0000-EFFFF) at the top
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* of 1 Mbyte, or the aliases at the top of 4 Gbyte
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* (FFFE0000-FFFEFFFF) result in the generation of BIOSCS#.
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* Note: Accesses to FFFF0000-FFFFFFFF are always forwarded to ISA.
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* Set bit 2: BIOSCS# Write Enable (1=enable, 0=disable).
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*/
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new = old | 0x2c4;
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if (new == old)
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return 0;
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pci_write_word(dev, xbcs, new);
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if (pci_read_word(dev, xbcs) != new) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", xbcs, new, name);
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return -1;
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}
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return 0;
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}
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/*
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* See ie. page 375 of "Intel ICH7 External Design Specification"
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* http://download.intel.com/design/chipsets/datashts/30701302.pdf
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*/
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static int enable_flash_ich(struct pci_dev *dev, const char *name,
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int bios_cntl)
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{
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uint8_t old, new;
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/*
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* Note: the ICH0-ICH5 BIOS_CNTL register is actually 16 bit wide, but
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* just treating it as 8 bit wide seems to work fine in practice.
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*/
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old = pci_read_byte(dev, bios_cntl);
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new = old | 1;
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if (new == old)
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return 0;
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pci_write_byte(dev, bios_cntl, new);
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if (pci_read_byte(dev, bios_cntl) != new) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", bios_cntl, new, name);
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return -1;
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}
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return 0;
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}
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static int enable_flash_ich_4e(struct pci_dev *dev, const char *name)
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{
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return enable_flash_ich(dev, name, 0x4e);
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}
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static int enable_flash_ich_dc(struct pci_dev *dev, const char *name)
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{
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return enable_flash_ich(dev, name, 0xdc);
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}
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static int enable_flash_vt823x(struct pci_dev *dev, const char *name)
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{
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uint8_t val;
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/* ROM write enable */
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val = pci_read_byte(dev, 0x40);
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val |= 0x10;
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pci_write_byte(dev, 0x40, val);
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if (pci_read_byte(dev, 0x40) != val) {
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printf("\nWARNING: Failed to enable ROM Write on \"%s\"\n",
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name);
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return -1;
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}
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return 0;
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}
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static int enable_flash_cs5530(struct pci_dev *dev, const char *name)
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{
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uint8_t reg8;
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#define DECODE_CONTROL_REG2 0x5b /* F0 index 0x5b */
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#define ROM_AT_LOGIC_CONTROL_REG 0x52 /* F0 index 0x52 */
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#define LOWER_ROM_ADDRESS_RANGE (1 << 0)
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#define ROM_WRITE_ENABLE (1 << 1)
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#define UPPER_ROM_ADDRESS_RANGE (1 << 2)
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#define BIOS_ROM_POSITIVE_DECODE (1 << 5)
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/* Decode 0x000E0000-0x000FFFFF (128 KB), not just 64 KB, and
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* decode 0xFF000000-0xFFFFFFFF (16 MB), not just 256 KB.
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* Make the configured ROM areas writable.
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*/
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reg8 = pci_read_byte(dev, ROM_AT_LOGIC_CONTROL_REG);
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reg8 |= LOWER_ROM_ADDRESS_RANGE;
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reg8 |= UPPER_ROM_ADDRESS_RANGE;
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reg8 |= ROM_WRITE_ENABLE;
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pci_write_byte(dev, ROM_AT_LOGIC_CONTROL_REG, reg8);
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/* Set positive decode on ROM. */
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reg8 = pci_read_byte(dev, DECODE_CONTROL_REG2);
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reg8 |= BIOS_ROM_POSITIVE_DECODE;
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pci_write_byte(dev, DECODE_CONTROL_REG2, reg8);
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return 0;
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}
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static int enable_flash_cs5536(struct pci_dev *dev, const char *name)
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{
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int fd_msr;
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unsigned char buf[8];
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unsigned int addr = 0x1808;
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/* Geode systems write protect the BIOS via RCONFs (cache
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* settings similar to MTRRs). To unlock, change MSR 0x1808
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* top byte to 0x22. Reading and writing to msr, however
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* requires instructions rdmsr/wrmsr, which are ring0 privileged
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* instructions so only the kernel can do the read/write. This
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* function, therefore, requires that the msr kernel module be
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* loaded to access these instructions from user space using
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* device /dev/cpu/0/msr. This hard-coded driver location
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* could have potential problems on SMP machines since it
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* assumes cpu0, but it is safe on the Geode which is not SMP.
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*
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* This is probably not portable beyond Linux.
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*/
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fd_msr = open("/dev/cpu/0/msr", O_RDONLY);
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if (!fd_msr) {
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perror("open msr");
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return -1;
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}
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lseek64(fd_msr, (off64_t) addr, SEEK_SET);
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read(fd_msr, buf, 8);
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close(fd_msr);
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if (buf[7] != 0x22) {
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printf("Enabling Geode MSR to write to flash.\n");
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buf[7] &= 0xFB;
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fd_msr = open("/dev/cpu/0/msr", O_WRONLY);
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if (!fd_msr) {
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perror("open msr");
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return -1;
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}
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lseek64(fd_msr, (off64_t) addr, SEEK_SET);
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if (write(fd_msr, buf, 8) < 0) {
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perror("msr write");
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printf
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("Cannot write to MSR. Make sure msr kernel is loaded: 'modprobe msr'\n");
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return -1;
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}
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close(fd_msr);
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}
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return 0;
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}
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static int enable_flash_sc1100(struct pci_dev *dev, const char *name)
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{
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uint8_t new;
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pci_write_byte(dev, 0x52, 0xee);
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new = pci_read_byte(dev, 0x52);
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if (new != 0xee) {
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printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x52, new, name);
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return -1;
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}
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return 0;
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}
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static int enable_flash_sis5595(struct pci_dev *dev, const char *name)
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{
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uint8_t new, newer;
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new = pci_read_byte(dev, 0x45);
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new &= (~0x20); /* Clear bit 5. */
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new |= 0x4; /* Set bit 2. */
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pci_write_byte(dev, 0x45, new);
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newer = pci_read_byte(dev, 0x45);
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if (newer != new) {
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printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x45, new, name);
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printf("Stuck at 0x%x\n", newer);
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return -1;
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}
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return 0;
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}
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static int enable_flash_amd8111(struct pci_dev *dev, const char *name)
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{
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uint8_t old, new;
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/* Enable decoding at 0xffb00000 to 0xffffffff. */
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old = pci_read_byte(dev, 0x43);
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new = old | 0xC0;
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if (new != old) {
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pci_write_byte(dev, 0x43, new);
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if (pci_read_byte(dev, 0x43) != new) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x43, new, name);
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}
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}
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old = pci_read_byte(dev, 0x40);
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new = old | 0x01;
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if (new == old)
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return 0;
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pci_write_byte(dev, 0x40, new);
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if (pci_read_byte(dev, 0x40) != new) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x40, new, name);
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return -1;
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}
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return 0;
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}
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static int enable_flash_ck804(struct pci_dev *dev, const char *name)
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{
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uint8_t old, new;
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old = pci_read_byte(dev, 0x88);
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new = old | 0xc0;
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if (new != old) {
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pci_write_byte(dev, 0x88, new);
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if (pci_read_byte(dev, 0x88) != new) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x88, new, name);
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}
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}
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old = pci_read_byte(dev, 0x6d);
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new = old | 0x01;
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if (new == old)
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return 0;
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pci_write_byte(dev, 0x6d, new);
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if (pci_read_byte(dev, 0x6d) != new) {
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printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x6d, new, name);
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return -1;
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}
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return 0;
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}
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/* ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80) */
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static int enable_flash_sb400(struct pci_dev *dev, const char *name)
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{
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uint8_t tmp;
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struct pci_filter f;
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struct pci_dev *smbusdev;
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/* Look for the SMBus device. */
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pci_filter_init((struct pci_access *)0, &f);
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f.vendor = 0x1002;
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f.device = 0x4372;
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for (smbusdev = pacc->devices; smbusdev; smbusdev = smbusdev->next) {
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if (pci_filter_match(&f, smbusdev)) {
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break;
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}
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}
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if (!smbusdev) {
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fprintf(stderr, "ERROR: SMBus device not found. Aborting.\n");
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exit(1);
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}
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/* Enable some SMBus stuff. */
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tmp = pci_read_byte(smbusdev, 0x79);
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tmp |= 0x01;
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pci_write_byte(smbusdev, 0x79, tmp);
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/* Change southbridge. */
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tmp = pci_read_byte(dev, 0x48);
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tmp |= 0x21;
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pci_write_byte(dev, 0x48, tmp);
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/* Now become a bit silly. */
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tmp = inb(0xc6f);
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outb(tmp, 0xeb);
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outb(tmp, 0xeb);
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tmp |= 0x40;
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outb(tmp, 0xc6f);
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outb(tmp, 0xeb);
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outb(tmp, 0xeb);
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return 0;
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}
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static int enable_flash_mcp55(struct pci_dev *dev, const char *name)
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{
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uint8_t old, new, byte;
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uint16_t word;
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/* Set the 0-16 MB enable bits. */
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byte = pci_read_byte(dev, 0x88);
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byte |= 0xff; /* 256K */
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pci_write_byte(dev, 0x88, byte);
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byte = pci_read_byte(dev, 0x8c);
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byte |= 0xff; /* 1M */
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pci_write_byte(dev, 0x8c, byte);
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word = pci_read_word(dev, 0x90);
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word |= 0x7fff; /* 16M */
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pci_write_word(dev, 0x90, word);
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old = pci_read_byte(dev, 0x6d);
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new = old | 0x01;
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if (new == old)
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return 0;
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pci_write_byte(dev, 0x6d, new);
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if (pci_read_byte(dev, 0x6d) != new) {
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printf
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("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
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0x6d, new, name);
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return -1;
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}
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return 0;
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}
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static int enable_flash_ht1000(struct pci_dev *dev, const char *name)
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{
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uint8_t byte;
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/* Set the 4MB enable bit. */
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byte = pci_read_byte(dev, 0x41);
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byte |= 0x0e;
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pci_write_byte(dev, 0x41, byte);
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byte = pci_read_byte(dev, 0x43);
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byte |= (1 << 4);
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pci_write_byte(dev, 0x43, byte);
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return 0;
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}
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typedef struct penable {
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uint16_t vendor, device;
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const char *name;
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int (*doit) (struct pci_dev *dev, const char *name);
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} FLASH_ENABLE;
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static const FLASH_ENABLE enables[] = {
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{0x1039, 0x0630, "SIS630", enable_flash_sis630},
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{0x8086, 0x7110, "PIIX4/PIIX4E/PIIX4M", enable_flash_piix4},
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{0x8086, 0x7198, "Intel 440MX", enable_flash_piix4},
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{0x8086, 0x2410, "ICH", enable_flash_ich_4e},
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{0x8086, 0x2420, "ICH0", enable_flash_ich_4e},
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{0x8086, 0x2440, "ICH2", enable_flash_ich_4e},
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{0x8086, 0x244c, "ICH2-M", enable_flash_ich_4e},
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{0x8086, 0x2480, "ICH3-S", enable_flash_ich_4e},
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{0x8086, 0x248c, "ICH3-M", enable_flash_ich_4e},
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{0x8086, 0x24c0, "ICH4/ICH4-L", enable_flash_ich_4e},
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{0x8086, 0x24cc, "ICH4-M", enable_flash_ich_4e},
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{0x8086, 0x24d0, "ICH5/ICH5R", enable_flash_ich_4e},
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{0x8086, 0x2640, "ICH6/ICH6R", enable_flash_ich_dc},
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{0x8086, 0x2641, "ICH6-M", enable_flash_ich_dc},
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{0x8086, 0x27b0, "ICH7DH", enable_flash_ich_dc},
|
|
{0x8086, 0x27b8, "ICH7/ICH7R", enable_flash_ich_dc},
|
|
{0x8086, 0x27b9, "ICH7M", enable_flash_ich_dc},
|
|
{0x8086, 0x27bd, "ICH7MDH", enable_flash_ich_dc},
|
|
{0x8086, 0x2810, "ICH8/ICH8R", enable_flash_ich_dc},
|
|
{0x8086, 0x2812, "ICH8DH", enable_flash_ich_dc},
|
|
{0x8086, 0x2814, "ICH8DO", enable_flash_ich_dc},
|
|
{0x1106, 0x8231, "VT8231", enable_flash_vt823x},
|
|
{0x1106, 0x3177, "VT8235", enable_flash_vt823x},
|
|
{0x1106, 0x3227, "VT8237", enable_flash_vt823x},
|
|
{0x1106, 0x8324, "CX700", enable_flash_vt823x},
|
|
{0x1106, 0x0686, "VT82C686", enable_flash_amd8111},
|
|
{0x1078, 0x0100, "CS5530/CS5530A", enable_flash_cs5530},
|
|
{0x100b, 0x0510, "SC1100", enable_flash_sc1100},
|
|
{0x1039, 0x0008, "SIS5595", enable_flash_sis5595},
|
|
{0x1022, 0x2080, "AMD GEODE CS5536", enable_flash_cs5536},
|
|
{0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
|
|
{0x10B9, 0x1533, "ALi M1533", enable_flash_ali_m1533},
|
|
{0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */
|
|
{0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */
|
|
{0x10de, 0x00d3, "NVIDIA CK804", enable_flash_ck804}, /* Slave, should not be here, to fix known bug for A01. */
|
|
{0x10de, 0x0260, "NVidia MCP51", enable_flash_ck804},
|
|
{0x10de, 0x0261, "NVidia MCP51", enable_flash_ck804},
|
|
{0x10de, 0x0262, "NVidia MCP51", enable_flash_ck804},
|
|
{0x10de, 0x0263, "NVidia MCP51", enable_flash_ck804},
|
|
{0x10de, 0x0360, "NVIDIA MCP55", enable_flash_mcp55}, /* M57SLI-S4 */
|
|
{0x10de, 0x0361, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
|
|
{0x10de, 0x0362, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
|
|
{0x10de, 0x0363, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
|
|
{0x10de, 0x0364, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
|
|
{0x10de, 0x0365, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
|
|
{0x10de, 0x0366, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
|
|
{0x10de, 0x0367, "NVIDIA MCP55", enable_flash_mcp55}, /* Pro */
|
|
{0x1002, 0x4377, "ATI SB400", enable_flash_sb400},
|
|
{0x1166, 0x0205, "Broadcom HT-1000", enable_flash_ht1000},
|
|
};
|
|
|
|
int chipset_flash_enable(void)
|
|
{
|
|
struct pci_dev *dev = 0;
|
|
int ret = -2; /* Nothing! */
|
|
int i;
|
|
|
|
/* Now let's try to find the chipset we have... */
|
|
/* TODO: Use ARRAY_SIZE. */
|
|
for (i = 0; i < sizeof(enables) / sizeof(enables[0]); i++) {
|
|
dev = pci_dev_find(enables[i].vendor, enables[i].device);
|
|
if (dev)
|
|
break;
|
|
}
|
|
|
|
if (dev) {
|
|
printf("Found chipset \"%s\", enabling flash write... ",
|
|
enables[i].name);
|
|
|
|
ret = enables[i].doit(dev, enables[i].name);
|
|
if (ret)
|
|
printf("FAILED!\n");
|
|
else
|
|
printf("OK.\n");
|
|
}
|
|
|
|
return ret;
|
|
}
|