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coreboot-kgpe-d16/util/flashrom/chipset_enable.c

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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2000 Silicon Integrated System Corporation
* Copyright (C) 2005-2007 coresystems GmbH <stepan@coresystems.de>
* Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
*
* 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.
*
* 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
*/
/*
* Contains the chipset specific flash enables.
*/
#define _LARGEFILE64_SOURCE
#include <stdio.h>
#include <pci/pci.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#include "flash.h"
unsigned long flashbase = 0;
/**
* flashrom defaults to LPC flash devices. If a known SPI controller is found
* and the SPI strappings are set, this will be overwritten by the probing code.
*
* Eventually, this will become an array when multiple flash support works.
*/
flashbus_t flashbus = BUS_TYPE_LPC;
void *spibar = NULL;
extern int ichspi_lock;
static int enable_flash_ali_m1533(struct pci_dev *dev, const char *name)
{
uint8_t tmp;
/*
* ROM Write enable, 0xFFFC0000-0xFFFDFFFF and
* 0xFFFE0000-0xFFFFFFFF ROM select enable.
*/
tmp = pci_read_byte(dev, 0x47);
tmp |= 0x46;
pci_write_byte(dev, 0x47, tmp);
return 0;
}
static int enable_flash_sis630(struct pci_dev *dev, const char *name)
{
uint8_t b;
/* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630. */
b = pci_read_byte(dev, 0x40);
pci_write_byte(dev, 0x40, b | 0xb);
/* Flash write enable on SiS 540/630. */
b = pci_read_byte(dev, 0x45);
pci_write_byte(dev, 0x45, b | 0x40);
/* The same thing on SiS 950 Super I/O side... */
/* First probe for Super I/O on config port 0x2e. */
OUTB(0x87, 0x2e);
OUTB(0x01, 0x2e);
OUTB(0x55, 0x2e);
OUTB(0x55, 0x2e);
if (INB(0x2f) != 0x87) {
/* If that failed, try config port 0x4e. */
OUTB(0x87, 0x4e);
OUTB(0x01, 0x4e);
OUTB(0x55, 0x4e);
OUTB(0xaa, 0x4e);
if (INB(0x4f) != 0x87) {
printf("Can not access SiS 950\n");
return -1;
}
OUTB(0x24, 0x4e);
b = INB(0x4f) | 0xfc;
OUTB(0x24, 0x4e);
OUTB(b, 0x4f);
OUTB(0x02, 0x4e);
OUTB(0x02, 0x4f);
}
OUTB(0x24, 0x2e);
printf("2f is %#x\n", INB(0x2f));
b = INB(0x2f) | 0xfc;
OUTB(0x24, 0x2e);
OUTB(b, 0x2f);
OUTB(0x02, 0x2e);
OUTB(0x02, 0x2f);
return 0;
}
/* Datasheet:
* - Name: 82371AB PCI-TO-ISA / IDE XCELERATOR (PIIX4)
* - URL: http://www.intel.com/design/intarch/datashts/290562.htm
* - PDF: http://www.intel.com/design/intarch/datashts/29056201.pdf
* - Order Number: 290562-001
*/
static int enable_flash_piix4(struct pci_dev *dev, const char *name)
{
uint16_t old, new;
uint16_t xbcs = 0x4e; /* X-Bus Chip Select register. */
old = pci_read_word(dev, xbcs);
/* Set bit 9: 1-Meg Extended BIOS Enable (PCI master accesses to
* FFF00000-FFF7FFFF are forwarded to ISA).
* Note: This bit is reserved on PIIX/PIIX3/MPIIX.
* Set bit 7: Extended BIOS Enable (PCI master accesses to
* FFF80000-FFFDFFFF are forwarded to ISA).
* Set bit 6: Lower BIOS Enable (PCI master, or ISA master accesses to
* the lower 64-Kbyte BIOS block (E0000-EFFFF) at the top
* of 1 Mbyte, or the aliases at the top of 4 Gbyte
* (FFFE0000-FFFEFFFF) result in the generation of BIOSCS#.
* Note: Accesses to FFFF0000-FFFFFFFF are always forwarded to ISA.
* Set bit 2: BIOSCS# Write Enable (1=enable, 0=disable).
*/
if (dev->device_id == 0x122e || dev->device_id == 0x7000
|| dev->device_id == 0x1234)
new = old | 0x00c4; /* PIIX/PIIX3/MPIIX: Bit 9 is reserved. */
else
new = old | 0x02c4;
if (new == old)
return 0;
pci_write_word(dev, xbcs, new);
if (pci_read_word(dev, xbcs) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", xbcs, new, name);
return -1;
}
return 0;
}
/*
* See ie. page 375 of "Intel I/O Controller Hub 7 (ICH7) Family Datasheet"
* http://download.intel.com/design/chipsets/datashts/30701303.pdf
*/
static int enable_flash_ich(struct pci_dev *dev, const char *name,
int bios_cntl)
{
uint8_t old, new;
/*
* Note: the ICH0-ICH5 BIOS_CNTL register is actually 16 bit wide, but
* just treating it as 8 bit wide seems to work fine in practice.
*/
old = pci_read_byte(dev, bios_cntl);
printf_debug("\nBIOS Lock Enable: %sabled, ",
(old & (1 << 1)) ? "en" : "dis");
printf_debug("BIOS Write Enable: %sabled, ",
(old & (1 << 0)) ? "en" : "dis");
printf_debug("BIOS_CNTL is 0x%x\n", old);
new = old | 1;
if (new == old)
return 0;
pci_write_byte(dev, bios_cntl, new);
if (pci_read_byte(dev, bios_cntl) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", bios_cntl, new, name);
return -1;
}
return 0;
}
static int enable_flash_ich_4e(struct pci_dev *dev, const char *name)
{
return enable_flash_ich(dev, name, 0x4e);
}
static int enable_flash_ich_dc(struct pci_dev *dev, const char *name)
{
return enable_flash_ich(dev, name, 0xdc);
}
#define ICH_STRAP_RSVD 0x00
#define ICH_STRAP_SPI 0x01
#define ICH_STRAP_PCI 0x02
#define ICH_STRAP_LPC 0x03
static int enable_flash_vt8237s_spi(struct pci_dev *dev, const char *name)
{
uint32_t mmio_base;
mmio_base = (pci_read_long(dev, 0xbc)) << 8;
printf_debug("MMIO base at = 0x%x\n", mmio_base);
spibar = physmap("VT8237S MMIO registers", mmio_base, 0x70);
printf_debug("0x6c: 0x%04x (CLOCK/DEBUG)\n",
*(uint16_t *) (spibar + 0x6c));
flashbus = BUS_TYPE_VIA_SPI;
ich_init_opcodes();
return 0;
}
static int enable_flash_ich_dc_spi(struct pci_dev *dev, const char *name,
int ich_generation)
{
int ret, i;
uint8_t old, new, bbs, buc;
uint16_t spibar_offset, tmp2;
uint32_t tmp, gcs;
void *rcrb;
//TODO: These names are incorrect for EP80579. For that, the solution would look like the commented line
//static const char *straps_names[] = {"SPI", "reserved", "reserved", "LPC" };
static const char *straps_names[] = { "reserved", "SPI", "PCI", "LPC" };
/* Enable Flash Writes */
ret = enable_flash_ich_dc(dev, name);
/* Get physical address of Root Complex Register Block */
tmp = pci_read_long(dev, 0xf0) & 0xffffc000;
printf_debug("\nRoot Complex Register Block address = 0x%x\n", tmp);
/* Map RCBA to virtual memory */
rcrb = physmap("ICH RCRB", tmp, 0x4000);
gcs = *(volatile uint32_t *)(rcrb + 0x3410);
printf_debug("GCS = 0x%x: ", gcs);
printf_debug("BIOS Interface Lock-Down: %sabled, ",
(gcs & 0x1) ? "en" : "dis");
bbs = (gcs >> 10) & 0x3;
printf_debug("BOOT BIOS Straps: 0x%x (%s)\n", bbs, straps_names[bbs]);
buc = *(volatile uint8_t *)(rcrb + 0x3414);
printf_debug("Top Swap : %s\n",
(buc & 1) ? "enabled (A16 inverted)" : "not enabled");
/* It seems the ICH7 does not support SPI and LPC chips at the same
* time. At least not with our current code. So we prevent searching
* on ICH7 when the southbridge is strapped to LPC
*/
if (ich_generation == 7 && bbs == ICH_STRAP_LPC) {
/* No further SPI initialization required */
return ret;
}
switch (ich_generation) {
case 7:
flashbus = BUS_TYPE_ICH7_SPI;
spibar_offset = 0x3020;
break;
case 8:
flashbus = BUS_TYPE_ICH9_SPI;
spibar_offset = 0x3020;
break;
case 9:
case 10:
default: /* Future version might behave the same */
flashbus = BUS_TYPE_ICH9_SPI;
spibar_offset = 0x3800;
break;
}
/* SPIBAR is at RCRB+0x3020 for ICH[78] and RCRB+0x3800 for ICH9. */
printf_debug("SPIBAR = 0x%x + 0x%04x\n", tmp, spibar_offset);
/* Assign Virtual Address */
spibar = rcrb + spibar_offset;
switch (flashbus) {
case BUS_TYPE_ICH7_SPI:
printf_debug("0x00: 0x%04x (SPIS)\n",
*(uint16_t *) (spibar + 0));
printf_debug("0x02: 0x%04x (SPIC)\n",
*(uint16_t *) (spibar + 2));
printf_debug("0x04: 0x%08x (SPIA)\n",
*(uint32_t *) (spibar + 4));
for (i = 0; i < 8; i++) {
int offs;
offs = 8 + (i * 8);
printf_debug("0x%02x: 0x%08x (SPID%d)\n", offs,
*(uint32_t *) (spibar + offs), i);
printf_debug("0x%02x: 0x%08x (SPID%d+4)\n", offs + 4,
*(uint32_t *) (spibar + offs + 4), i);
}
printf_debug("0x50: 0x%08x (BBAR)\n",
*(uint32_t *) (spibar + 0x50));
printf_debug("0x54: 0x%04x (PREOP)\n",
*(uint16_t *) (spibar + 0x54));
printf_debug("0x56: 0x%04x (OPTYPE)\n",
*(uint16_t *) (spibar + 0x56));
printf_debug("0x58: 0x%08x (OPMENU)\n",
*(uint32_t *) (spibar + 0x58));
printf_debug("0x5c: 0x%08x (OPMENU+4)\n",
*(uint32_t *) (spibar + 0x5c));
for (i = 0; i < 4; i++) {
int offs;
offs = 0x60 + (i * 4);
printf_debug("0x%02x: 0x%08x (PBR%d)\n", offs,
*(uint32_t *) (spibar + offs), i);
}
printf_debug("\n");
if ((*(uint16_t *) spibar) & (1 << 15)) {
printf("WARNING: SPI Configuration Lockdown activated.\n");
ichspi_lock = 1;
}
ich_init_opcodes();
break;
case BUS_TYPE_ICH9_SPI:
tmp2 = *(uint16_t *) (spibar + 4);
printf_debug("0x04: 0x%04x (HSFS)\n", tmp2);
printf_debug("FLOCKDN %i, ", (tmp2 >> 15 & 1));
printf_debug("FDV %i, ", (tmp2 >> 14) & 1);
printf_debug("FDOPSS %i, ", (tmp2 >> 13) & 1);
printf_debug("SCIP %i, ", (tmp2 >> 5) & 1);
printf_debug("BERASE %i, ", (tmp2 >> 3) & 3);
printf_debug("AEL %i, ", (tmp2 >> 2) & 1);
printf_debug("FCERR %i, ", (tmp2 >> 1) & 1);
printf_debug("FDONE %i\n", (tmp2 >> 0) & 1);
tmp = *(uint32_t *) (spibar + 0x50);
printf_debug("0x50: 0x%08x (FRAP)\n", tmp);
printf_debug("BMWAG %i, ", (tmp >> 24) & 0xff);
printf_debug("BMRAG %i, ", (tmp >> 16) & 0xff);
printf_debug("BRWA %i, ", (tmp >> 8) & 0xff);
printf_debug("BRRA %i\n", (tmp >> 0) & 0xff);
printf_debug("0x54: 0x%08x (FREG0)\n",
*(uint32_t *) (spibar + 0x54));
printf_debug("0x58: 0x%08x (FREG1)\n",
*(uint32_t *) (spibar + 0x58));
printf_debug("0x5C: 0x%08x (FREG2)\n",
*(uint32_t *) (spibar + 0x5C));
printf_debug("0x60: 0x%08x (FREG3)\n",
*(uint32_t *) (spibar + 0x60));
printf_debug("0x64: 0x%08x (FREG4)\n",
*(uint32_t *) (spibar + 0x64));
printf_debug("0x74: 0x%08x (PR0)\n",
*(uint32_t *) (spibar + 0x74));
printf_debug("0x78: 0x%08x (PR1)\n",
*(uint32_t *) (spibar + 0x78));
printf_debug("0x7C: 0x%08x (PR2)\n",
*(uint32_t *) (spibar + 0x7C));
printf_debug("0x80: 0x%08x (PR3)\n",
*(uint32_t *) (spibar + 0x80));
printf_debug("0x84: 0x%08x (PR4)\n",
*(uint32_t *) (spibar + 0x84));
printf_debug("0x90: 0x%08x (SSFS, SSFC)\n",
*(uint32_t *) (spibar + 0x90));
printf_debug("0x94: 0x%04x (PREOP)\n",
*(uint16_t *) (spibar + 0x94));
printf_debug("0x96: 0x%04x (OPTYPE)\n",
*(uint16_t *) (spibar + 0x96));
printf_debug("0x98: 0x%08x (OPMENU)\n",
*(uint32_t *) (spibar + 0x98));
printf_debug("0x9C: 0x%08x (OPMENU+4)\n",
*(uint32_t *) (spibar + 0x9C));
printf_debug("0xA0: 0x%08x (BBAR)\n",
*(uint32_t *) (spibar + 0xA0));
printf_debug("0xB0: 0x%08x (FDOC)\n",
*(uint32_t *) (spibar + 0xB0));
if (tmp2 & (1 << 15)) {
printf("WARNING: SPI Configuration Lockdown activated.\n");
ichspi_lock = 1;
}
ich_init_opcodes();
break;
default:
/* Nothing */
break;
}
old = pci_read_byte(dev, 0xdc);
printf_debug("SPI Read Configuration: ");
new = (old >> 2) & 0x3;
switch (new) {
case 0:
case 1:
case 2:
printf_debug("prefetching %sabled, caching %sabled, ",
(new & 0x2) ? "en" : "dis",
(new & 0x1) ? "dis" : "en");
break;
default:
printf_debug("invalid prefetching/caching settings, ");
break;
}
return ret;
}
static int enable_flash_ich7(struct pci_dev *dev, const char *name)
{
return enable_flash_ich_dc_spi(dev, name, 7);
}
static int enable_flash_ich8(struct pci_dev *dev, const char *name)
{
return enable_flash_ich_dc_spi(dev, name, 8);
}
static int enable_flash_ich9(struct pci_dev *dev, const char *name)
{
return enable_flash_ich_dc_spi(dev, name, 9);
}
static int enable_flash_ich10(struct pci_dev *dev, const char *name)
{
return enable_flash_ich_dc_spi(dev, name, 10);
}
static int enable_flash_vt823x(struct pci_dev *dev, const char *name)
{
uint8_t val;
/* enable ROM decode range (1MB) FFC00000 - FFFFFFFF */
pci_write_byte(dev, 0x41, 0x7f);
/* ROM write enable */
val = pci_read_byte(dev, 0x40);
val |= 0x10;
pci_write_byte(dev, 0x40, val);
if (pci_read_byte(dev, 0x40) != val) {
printf("\nWARNING: Failed to enable ROM Write on \"%s\"\n",
name);
return -1;
}
return 0;
}
static int enable_flash_cs5530(struct pci_dev *dev, const char *name)
{
uint8_t reg8;
#define DECODE_CONTROL_REG2 0x5b /* F0 index 0x5b */
#define ROM_AT_LOGIC_CONTROL_REG 0x52 /* F0 index 0x52 */
#define LOWER_ROM_ADDRESS_RANGE (1 << 0)
#define ROM_WRITE_ENABLE (1 << 1)
#define UPPER_ROM_ADDRESS_RANGE (1 << 2)
#define BIOS_ROM_POSITIVE_DECODE (1 << 5)
/* Decode 0x000E0000-0x000FFFFF (128 KB), not just 64 KB, and
* decode 0xFF000000-0xFFFFFFFF (16 MB), not just 256 KB.
* Make the configured ROM areas writable.
*/
reg8 = pci_read_byte(dev, ROM_AT_LOGIC_CONTROL_REG);
reg8 |= LOWER_ROM_ADDRESS_RANGE;
reg8 |= UPPER_ROM_ADDRESS_RANGE;
reg8 |= ROM_WRITE_ENABLE;
pci_write_byte(dev, ROM_AT_LOGIC_CONTROL_REG, reg8);
/* Set positive decode on ROM. */
reg8 = pci_read_byte(dev, DECODE_CONTROL_REG2);
reg8 |= BIOS_ROM_POSITIVE_DECODE;
pci_write_byte(dev, DECODE_CONTROL_REG2, reg8);
return 0;
}
/**
* Geode systems write protect the BIOS via RCONFs (cache settings similar
* to MTRRs). To unlock, change MSR 0x1808 top byte to 0x22. Reading and
* writing to MSRs, however requires instructions rdmsr/wrmsr, which are
* ring0 privileged instructions so only the kernel can do the read/write.
* This function, therefore, requires that the msr kernel module be loaded
* to access these instructions from user space using device /dev/cpu/0/msr.
*
* This hard-coded location could have potential problems on SMP machines
* since it assumes cpu0, but it is safe on the Geode which is not SMP.
*
* Geode systems also write protect the NOR flash chip itself via MSR_NORF_CTL.
* To enable write to NOR Boot flash for the benefit of systems that have such
* a setup, raise MSR 0x51400018 WE_CS3 (write enable Boot Flash Chip Select).
*
* This is probably not portable beyond Linux.
*/
static int enable_flash_cs5536(struct pci_dev *dev, const char *name)
{
#define MSR_RCONF_DEFAULT 0x1808
#define MSR_NORF_CTL 0x51400018
int fd_msr;
unsigned char buf[8];
fd_msr = open("/dev/cpu/0/msr", O_RDWR);
if (!fd_msr) {
perror("open msr");
return -1;
}
if (lseek64(fd_msr, (off64_t) MSR_RCONF_DEFAULT, SEEK_SET) == -1) {
perror("lseek64");
printf("Cannot operate on MSR. Did you run 'modprobe msr'?\n");
close(fd_msr);
return -1;
}
if (read(fd_msr, buf, 8) != 8) {
perror("read msr");
close(fd_msr);
return -1;
}
if (buf[7] != 0x22) {
buf[7] &= 0xfb;
if (lseek64(fd_msr, (off64_t) MSR_RCONF_DEFAULT,
SEEK_SET) == -1) {
perror("lseek64");
close(fd_msr);
return -1;
}
if (write(fd_msr, buf, 8) < 0) {
perror("msr write");
close(fd_msr);
return -1;
}
}
if (lseek64(fd_msr, (off64_t) MSR_NORF_CTL, SEEK_SET) == -1) {
perror("lseek64");
close(fd_msr);
return -1;
}
if (read(fd_msr, buf, 8) != 8) {
perror("read msr");
close(fd_msr);
return -1;
}
/* Raise WE_CS3 bit. */
buf[0] |= 0x08;
if (lseek64(fd_msr, (off64_t) MSR_NORF_CTL, SEEK_SET) == -1) {
perror("lseek64");
close(fd_msr);
return -1;
}
if (write(fd_msr, buf, 8) < 0) {
perror("msr write");
close(fd_msr);
return -1;
}
close(fd_msr);
#undef MSR_RCONF_DEFAULT
#undef MSR_NORF_CTL
return 0;
}
static int enable_flash_sc1100(struct pci_dev *dev, const char *name)
{
uint8_t new;
pci_write_byte(dev, 0x52, 0xee);
new = pci_read_byte(dev, 0x52);
if (new != 0xee) {
printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x52, new, name);
return -1;
}
return 0;
}
static int enable_flash_sis5595(struct pci_dev *dev, const char *name)
{
uint8_t new, newer;
new = pci_read_byte(dev, 0x45);
new &= (~0x20); /* Clear bit 5. */
new |= 0x4; /* Set bit 2. */
pci_write_byte(dev, 0x45, new);
newer = pci_read_byte(dev, 0x45);
if (newer != new) {
printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x45, new, name);
printf("Stuck at 0x%x\n", newer);
return -1;
}
/* Extended BIOS enable = 1, Lower BIOS Enable = 1 */
new = pci_read_byte(dev, 0x40);
new &= 0xFB;
new |= 0x3;
pci_write_byte(dev, 0x40, new);
newer = pci_read_byte(dev, 0x40);
if (newer != new) {
printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x40, new, name);
printf("Stuck at 0x%x\n", newer);
return -1;
}
return 0;
}
/* Works for AMD-8111, VIA VT82C586A/B, VIA VT82C686A/B. */
static int enable_flash_amd8111(struct pci_dev *dev, const char *name)
{
uint8_t old, new;
/* Enable decoding at 0xffb00000 to 0xffffffff. */
old = pci_read_byte(dev, 0x43);
new = old | 0xC0;
if (new != old) {
pci_write_byte(dev, 0x43, new);
if (pci_read_byte(dev, 0x43) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x43, new, name);
}
}
/* Enable 'ROM write' bit. */
old = pci_read_byte(dev, 0x40);
new = old | 0x01;
if (new == old)
return 0;
pci_write_byte(dev, 0x40, new);
if (pci_read_byte(dev, 0x40) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x40, new, name);
return -1;
}
return 0;
}
static int enable_flash_sb600(struct pci_dev *dev, const char *name)
{
uint32_t tmp, low_bits, num;
uint8_t reg;
low_bits = tmp = pci_read_long(dev, 0xa0);
low_bits &= ~0xffffc000; /* for mmap aligning requirements */
low_bits &= 0xfffffff0; /* remove low 4 bits */
tmp &= 0xffffc000;
printf_debug("SPI base address is at 0x%x\n", tmp + low_bits);
sb600_spibar = physmap("SB600 SPI registers", tmp, 0x4000);
sb600_spibar += low_bits;
/* Clear ROM protect 0-3. */
for (reg = 0x50; reg < 0x60; reg += 4) {
num = pci_read_long(dev, reg);
num &= 0xfffffffc;
pci_write_byte(dev, reg, num);
}
flashbus = BUS_TYPE_SB600_SPI;
/* Enable SPI ROM in SB600 PM register. */
OUTB(0x8f, 0xcd6);
OUTB(0x0e, 0xcd7);
return 0;
}
static int enable_flash_ck804(struct pci_dev *dev, const char *name)
{
uint8_t old, new;
old = pci_read_byte(dev, 0x88);
new = old | 0xc0;
if (new != old) {
pci_write_byte(dev, 0x88, new);
if (pci_read_byte(dev, 0x88) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x88, new, name);
}
}
old = pci_read_byte(dev, 0x6d);
new = old | 0x01;
if (new == old)
return 0;
pci_write_byte(dev, 0x6d, new);
if (pci_read_byte(dev, 0x6d) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x6d, new, name);
return -1;
}
return 0;
}
/* ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80) */
static int enable_flash_sb400(struct pci_dev *dev, const char *name)
{
uint8_t tmp;
struct pci_filter f;
struct pci_dev *smbusdev;
/* Look for the SMBus device. */
pci_filter_init((struct pci_access *)0, &f);
f.vendor = 0x1002;
f.device = 0x4372;
for (smbusdev = pacc->devices; smbusdev; smbusdev = smbusdev->next) {
if (pci_filter_match(&f, smbusdev))
break;
}
if (!smbusdev) {
fprintf(stderr, "ERROR: SMBus device not found. Aborting.\n");
exit(1);
}
/* Enable some SMBus stuff. */
tmp = pci_read_byte(smbusdev, 0x79);
tmp |= 0x01;
pci_write_byte(smbusdev, 0x79, tmp);
/* Change southbridge. */
tmp = pci_read_byte(dev, 0x48);
tmp |= 0x21;
pci_write_byte(dev, 0x48, tmp);
/* Now become a bit silly. */
tmp = INB(0xc6f);
OUTB(tmp, 0xeb);
OUTB(tmp, 0xeb);
tmp |= 0x40;
OUTB(tmp, 0xc6f);
OUTB(tmp, 0xeb);
OUTB(tmp, 0xeb);
return 0;
}
static int enable_flash_mcp55(struct pci_dev *dev, const char *name)
{
uint8_t old, new, byte;
uint16_t word;
/* Set the 0-16 MB enable bits. */
byte = pci_read_byte(dev, 0x88);
byte |= 0xff; /* 256K */
pci_write_byte(dev, 0x88, byte);
byte = pci_read_byte(dev, 0x8c);
byte |= 0xff; /* 1M */
pci_write_byte(dev, 0x8c, byte);
word = pci_read_word(dev, 0x90);
word |= 0x7fff; /* 16M */
pci_write_word(dev, 0x90, word);
old = pci_read_byte(dev, 0x6d);
new = old | 0x01;
if (new == old)
return 0;
pci_write_byte(dev, 0x6d, new);
if (pci_read_byte(dev, 0x6d) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x6d, new, name);
return -1;
}
return 0;
}
static int enable_flash_ht1000(struct pci_dev *dev, const char *name)
{
uint8_t byte;
/* Set the 4MB enable bit. */
byte = pci_read_byte(dev, 0x41);
byte |= 0x0e;
pci_write_byte(dev, 0x41, byte);
byte = pci_read_byte(dev, 0x43);
byte |= (1 << 4);
pci_write_byte(dev, 0x43, byte);
return 0;
}
/**
* Usually on the x86 architectures (and on other PC-like platforms like some
* Alphas or Itanium) the system flash is mapped right below 4G. On the AMD
* Elan SC520 only a small piece of the system flash is mapped there, but the
* complete flash is mapped somewhere below 1G. The position can be determined
* by the BOOTCS PAR register.
*/
static int get_flashbase_sc520(struct pci_dev *dev, const char *name)
{
int i, bootcs_found = 0;
uint32_t parx = 0;
void *mmcr;
/* 1. Map MMCR */
mmcr = physmap("Elan SC520 MMCR", 0xfffef000, getpagesize());
/* 2. Scan PAR0 (0x88) - PAR15 (0xc4) for
* BOOTCS region (PARx[31:29] = 100b)e
*/
for (i = 0x88; i <= 0xc4; i += 4) {
parx = *(volatile uint32_t *)(mmcr + i);
if ((parx >> 29) == 4) {
bootcs_found = 1;
break; /* BOOTCS found */
}
}
/* 3. PARx[25] = 1b --> flashbase[29:16] = PARx[13:0]
* PARx[25] = 0b --> flashbase[29:12] = PARx[17:0]
*/
if (bootcs_found) {
if (parx & (1 << 25)) {
parx &= (1 << 14) - 1; /* Mask [13:0] */
flashbase = parx << 16;
} else {
parx &= (1 << 18) - 1; /* Mask [17:0] */
flashbase = parx << 12;
}
} else {
printf("AMD Elan SC520 detected, but no BOOTCS. Assuming flash at 4G\n");
}
/* 4. Clean up */
munmap (mmcr, getpagesize());
return 0;
}
typedef struct penable {
uint16_t vendor, device;
const char *name;
int (*doit) (struct pci_dev *dev, const char *name);
} FLASH_ENABLE;
static const FLASH_ENABLE enables[] = {
{0x1039, 0x0630, "SiS630", enable_flash_sis630},
{0x8086, 0x122e, "Intel PIIX", enable_flash_piix4},
{0x8086, 0x1234, "Intel MPIIX", enable_flash_piix4},
{0x8086, 0x7000, "Intel PIIX3", enable_flash_piix4},
{0x8086, 0x7110, "Intel PIIX4/4E/4M", enable_flash_piix4},
{0x8086, 0x7198, "Intel 440MX", enable_flash_piix4},
{0x8086, 0x2410, "Intel ICH", enable_flash_ich_4e},
{0x8086, 0x2420, "Intel ICH0", enable_flash_ich_4e},
{0x8086, 0x2440, "Intel ICH2", enable_flash_ich_4e},
{0x8086, 0x244c, "Intel ICH2-M", enable_flash_ich_4e},
{0x8086, 0x2480, "Intel ICH3-S", enable_flash_ich_4e},
{0x8086, 0x248c, "Intel ICH3-M", enable_flash_ich_4e},
{0x8086, 0x24c0, "Intel ICH4/ICH4-L", enable_flash_ich_4e},
{0x8086, 0x24cc, "Intel ICH4-M", enable_flash_ich_4e},
{0x8086, 0x24d0, "Intel ICH5/ICH5R", enable_flash_ich_4e},
{0x8086, 0x25a1, "Intel 6300ESB", enable_flash_ich_4e},
{0x8086, 0x2670, "Intel 631xESB/632xESB/3100", enable_flash_ich_dc},
{0x8086, 0x2640, "Intel ICH6/ICH6R", enable_flash_ich_dc},
{0x8086, 0x2641, "Intel ICH6-M", enable_flash_ich_dc},
{0x8086, 0x5031, "Intel EP80579", enable_flash_ich7},
{0x8086, 0x27b0, "Intel ICH7DH", enable_flash_ich7},
{0x8086, 0x27b8, "Intel ICH7/ICH7R", enable_flash_ich7},
{0x8086, 0x27b9, "Intel ICH7M", enable_flash_ich7},
{0x8086, 0x27bd, "Intel ICH7MDH", enable_flash_ich7},
{0x8086, 0x2810, "Intel ICH8/ICH8R", enable_flash_ich8},
{0x8086, 0x2811, "Intel ICH8M-E", enable_flash_ich8},
{0x8086, 0x2812, "Intel ICH8DH", enable_flash_ich8},
{0x8086, 0x2814, "Intel ICH8DO", enable_flash_ich8},
{0x8086, 0x2815, "Intel ICH8M", enable_flash_ich8},
{0x8086, 0x2912, "Intel ICH9DH", enable_flash_ich9},
{0x8086, 0x2914, "Intel ICH9DO", enable_flash_ich9},
{0x8086, 0x2916, "Intel ICH9R", enable_flash_ich9},
{0x8086, 0x2917, "Intel ICH9M-E", enable_flash_ich9},
{0x8086, 0x2918, "Intel ICH9", enable_flash_ich9},
{0x8086, 0x2919, "Intel ICH9M", enable_flash_ich9},
{0x8086, 0x3a14, "Intel ICH10DO", enable_flash_ich10},
{0x8086, 0x3a16, "Intel ICH10R", enable_flash_ich10},
{0x8086, 0x3a18, "Intel ICH10", enable_flash_ich10},
{0x8086, 0x3a1a, "Intel ICH10D", enable_flash_ich10},
{0x1106, 0x8231, "VIA VT8231", enable_flash_vt823x},
{0x1106, 0x3177, "VIA VT8235", enable_flash_vt823x},
{0x1106, 0x3227, "VIA VT8237", enable_flash_vt823x},
{0x1106, 0x3337, "VIA VT8237A", enable_flash_vt823x},
{0x1106, 0x3372, "VIA VT8237S", enable_flash_vt8237s_spi},
{0x1106, 0x8324, "VIA CX700", enable_flash_vt823x},
{0x1106, 0x0586, "VIA VT82C586A/B", enable_flash_amd8111},
{0x1106, 0x0686, "VIA VT82C686A/B", enable_flash_amd8111},
{0x1078, 0x0100, "AMD CS5530(A)", enable_flash_cs5530},
{0x100b, 0x0510, "AMD SC1100", enable_flash_sc1100},
{0x1039, 0x0008, "SiS5595", enable_flash_sis5595},
{0x1022, 0x2080, "AMD CS5536", enable_flash_cs5536},
{0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
{0x1002, 0x438D, "ATI(AMD) SB600", enable_flash_sb600},
{0x1002, 0x439d, "ATI(AMD) SB700", enable_flash_sb600},
{0x10B9, 0x1533, "ALi M1533", enable_flash_ali_m1533},
{0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */
{0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */
/* Slave, should not be here, to fix known bug for A01. */
{0x10de, 0x00d3, "NVIDIA CK804", enable_flash_ck804},
{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*/
{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 */
{0x10de, 0x0548, "NVIDIA MCP67", enable_flash_mcp55},
{0x1002, 0x4377, "ATI SB400", enable_flash_sb400},
{0x1166, 0x0205, "Broadcom HT-1000", enable_flash_ht1000},
{0x1022, 0x3000, "AMD Elan SC520", get_flashbase_sc520},
{0x1022, 0x7440, "AMD AMD-768", enable_flash_amd8111},
};
void print_supported_chipsets(void)
{
int i;
printf("\nSupported chipsets:\n\n");
for (i = 0; i < ARRAY_SIZE(enables); i++)
printf("%s (%04x:%04x)\n", enables[i].name,
enables[i].vendor, enables[i].device);
}
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... */
for (i = 0; i < ARRAY_SIZE(enables); 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;
}
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