/*
* 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 <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "flash.h"
unsigned long flashbase = 0;
/**
* flashrom defaults to Parallel/LPC/FWH flash devices. If a known host
* controller is found, the init routine sets the buses_supported bitfield to
* contain the supported buses for that controller.
*/
enum chipbustype buses_supported = CHIP_BUSTYPE_NONSPI;
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",
mmio_readw(spibar + 0x6c));
/* Not sure if it speaks all these bus protocols. */
buses_supported = CHIP_BUSTYPE_LPC | CHIP_BUSTYPE_FWH | CHIP_BUSTYPE_SPI;
spi_controller = SPI_CONTROLLER_VIA;
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 = mmio_readl(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 = mmio_readb(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) {
/* Not sure if it speaks LPC as well. */
buses_supported = CHIP_BUSTYPE_LPC | CHIP_BUSTYPE_FWH;
/* No further SPI initialization required */
return ret;
}
switch (ich_generation) {
case 7:
buses_supported = CHIP_BUSTYPE_SPI;
spi_controller = SPI_CONTROLLER_ICH7;
spibar_offset = 0x3020;
break;
case 8:
/* Not sure if it speaks LPC as well. */
buses_supported = CHIP_BUSTYPE_LPC | CHIP_BUSTYPE_FWH | CHIP_BUSTYPE_SPI;
spi_controller = SPI_CONTROLLER_ICH9;
spibar_offset = 0x3020;
break;
case 9:
case 10:
default: /* Future version might behave the same */
/* Not sure if it speaks LPC as well. */
buses_supported = CHIP_BUSTYPE_LPC | CHIP_BUSTYPE_FWH | CHIP_BUSTYPE_SPI;
spi_controller = SPI_CONTROLLER_ICH9;
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 (spi_controller) {
case SPI_CONTROLLER_ICH7:
printf_debug("0x00: 0x%04x (SPIS)\n",
mmio_readw(spibar + 0));
printf_debug("0x02: 0x%04x (SPIC)\n",
mmio_readw(spibar + 2));
printf_debug("0x04: 0x%08x (SPIA)\n",
mmio_readl(spibar + 4));
for (i = 0; i < 8; i++) {
int offs;
offs = 8 + (i * 8);
printf_debug("0x%02x: 0x%08x (SPID%d)\n", offs,
mmio_readl(spibar + offs), i);
printf_debug("0x%02x: 0x%08x (SPID%d+4)\n", offs + 4,
mmio_readl(spibar + offs + 4), i);
}
printf_debug("0x50: 0x%08x (BBAR)\n",
mmio_readl(spibar + 0x50));
printf_debug("0x54: 0x%04x (PREOP)\n",
mmio_readw(spibar + 0x54));
printf_debug("0x56: 0x%04x (OPTYPE)\n",
mmio_readw(spibar + 0x56));
printf_debug("0x58: 0x%08x (OPMENU)\n",
mmio_readl(spibar + 0x58));
printf_debug("0x5c: 0x%08x (OPMENU+4)\n",
mmio_readl(spibar + 0x5c));
for (i = 0; i < 4; i++) {
int offs;
offs = 0x60 + (i * 4);
printf_debug("0x%02x: 0x%08x (PBR%d)\n", offs,
mmio_readl(spibar + offs), i);
}
printf_debug("\n");
if (mmio_readw(spibar) & (1 << 15)) {
printf("WARNING: SPI Configuration Lockdown activated.\n");
ichspi_lock = 1;
}
ich_init_opcodes();
break;
case SPI_CONTROLLER_ICH9:
tmp2 = mmio_readw(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 = mmio_readl(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",
mmio_readl(spibar + 0x54));
printf_debug("0x58: 0x%08x (FREG1)\n",
mmio_readl(spibar + 0x58));
printf_debug("0x5C: 0x%08x (FREG2)\n",
mmio_readl(spibar + 0x5C));
printf_debug("0x60: 0x%08x (FREG3)\n",
mmio_readl(spibar + 0x60));
printf_debug("0x64: 0x%08x (FREG4)\n",
mmio_readl(spibar + 0x64));
printf_debug("0x74: 0x%08x (PR0)\n",
mmio_readl(spibar + 0x74));
printf_debug("0x78: 0x%08x (PR1)\n",
mmio_readl(spibar + 0x78));
printf_debug("0x7C: 0x%08x (PR2)\n",
mmio_readl(spibar + 0x7C));
printf_debug("0x80: 0x%08x (PR3)\n",
mmio_readl(spibar + 0x80));
printf_debug("0x84: 0x%08x (PR4)\n",
mmio_readl(spibar + 0x84));
printf_debug("0x90: 0x%08x (SSFS, SSFC)\n",
mmio_readl(spibar + 0x90));
printf_debug("0x94: 0x%04x (PREOP)\n",
mmio_readw(spibar + 0x94));
printf_debug("0x96: 0x%04x (OPTYPE)\n",
mmio_readw(spibar + 0x96));
printf_debug("0x98: 0x%08x (OPMENU)\n",
mmio_readl(spibar + 0x98));
printf_debug("0x9C: 0x%08x (OPMENU+4)\n",
mmio_readl(spibar + 0x9C));
printf_debug("0xA0: 0x%08x (BBAR)\n",
mmio_readl(spibar + 0xA0));
printf_debug("0xB0: 0x%08x (FDOC)\n",
mmio_readl(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 == -1) {
perror("open(/dev/cpu/0/msr)");
printf("Cannot operate on MSR. Did you run 'modprobe msr'?\n");
return -1;
}
if (lseek64(fd_msr, (off64_t) MSR_RCONF_DEFAULT, 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;
}
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, prot;
uint8_t reg;
struct pci_dev *smbus_dev;
int has_spi = 1;
/* Clear ROM protect 0-3. */
for (reg = 0x50; reg < 0x60; reg += 4) {
prot = pci_read_long(dev, reg);
/* No protection flags for this region?*/
if ((prot & 0x3) == 0)
continue;
printf_debug("SB600 %s%sprotected from %u to %u\n",
(prot & 0x1) ? "write " : "",
(prot & 0x2) ? "read " : "",
(prot & 0xfffffc00),
(prot & 0xfffffc00) + ((prot & 0x3ff) << 8));
prot &= 0xfffffffc;
pci_write_byte(dev, reg, prot);
prot = pci_read_long(dev, reg);
if (prot & 0x3)
printf("SB600 %s%sunprotect failed from %u to %u\n",
(prot & 0x1) ? "write " : "",
(prot & 0x2) ? "read " : "",
(prot & 0xfffffc00),
(prot & 0xfffffc00) + ((prot & 0x3ff) << 8));
}
/* Read SPI_BaseAddr */
tmp = pci_read_long(dev, 0xa0);
tmp &= 0xffffffe0; /* remove bits 4-0 (reserved) */
printf_debug("SPI base address is at 0x%x\n", tmp);
/* If the BAR has address 0, it is unlikely SPI is used. */
if (!tmp)
has_spi = 0;
if (has_spi) {
/* Physical memory has to be mapped at page (4k) boundaries. */
sb600_spibar = physmap("SB600 SPI registers", tmp & 0xfffff000,
0x1000);
/* The low bits of the SPI base address are used as offset into
* the mapped page.
*/
sb600_spibar += tmp & 0xfff;
tmp = pci_read_long(dev, 0xa0);
printf_debug("AltSpiCSEnable=%i, SpiRomEnable=%i, "
"AbortEnable=%i\n", tmp & 0x1, (tmp & 0x2) >> 1,
(tmp & 0x4) >> 2);
tmp = (pci_read_byte(dev, 0xba) & 0x4) >> 2;
printf_debug("PrefetchEnSPIFromIMC=%i, ", tmp);
tmp = pci_read_byte(dev, 0xbb);
printf_debug("PrefetchEnSPIFromHost=%i, SpiOpEnInLpcMode=%i\n",
tmp & 0x1, (tmp & 0x20) >> 5);
tmp = mmio_readl(sb600_spibar);
printf_debug("SpiArbEnable=%i, SpiAccessMacRomEn=%i, "
"SpiHostAccessRomEn=%i, ArbWaitCount=%i, "
"SpiBridgeDisable=%i, DropOneClkOnRd=%i\n",
(tmp >> 19) & 0x1, (tmp >> 22) & 0x1,
(tmp >> 23) & 0x1, (tmp >> 24) & 0x7,
(tmp >> 27) & 0x1, (tmp >> 28) & 0x1);
}
/* Look for the SMBus device. */
smbus_dev = pci_dev_find(0x1002, 0x4385);
if (has_spi && !smbus_dev) {
fprintf(stderr, "ERROR: SMBus device not found. Not enabling SPI.\n");
has_spi = 0;
}
if (has_spi) {
/* Note about the bit tests below: If a bit is zero, the GPIO is SPI. */
/* GPIO11/SPI_DO and GPIO12/SPI_DI status */
reg = pci_read_byte(smbus_dev, 0xAB);
reg &= 0xC0;
printf_debug("GPIO11 used for %s\n", (reg & (1 << 6)) ? "GPIO" : "SPI_DO");
printf_debug("GPIO12 used for %s\n", (reg & (1 << 7)) ? "GPIO" : "SPI_DI");
if (reg != 0x00)
has_spi = 0;
/* GPIO31/SPI_HOLD and GPIO32/SPI_CS status */
reg = pci_read_byte(smbus_dev, 0x83);
reg &= 0xC0;
printf_debug("GPIO31 used for %s\n", (reg & (1 << 6)) ? "GPIO" : "SPI_HOLD");
printf_debug("GPIO32 used for %s\n", (reg & (1 << 7)) ? "GPIO" : "SPI_CS");
/* SPI_HOLD is not used on all boards, filter it out. */
if ((reg & 0x80) != 0x00)
has_spi = 0;
/* GPIO47/SPI_CLK status */
reg = pci_read_byte(smbus_dev, 0xA7);
reg &= 0x40;
printf_debug("GPIO47 used for %s\n", (reg & (1 << 6)) ? "GPIO" : "SPI_CLK");
if (reg != 0x00)
has_spi = 0;
}
buses_supported = CHIP_BUSTYPE_LPC | CHIP_BUSTYPE_FWH;
if (has_spi) {
buses_supported |= CHIP_BUSTYPE_SPI;
spi_controller = SPI_CONTROLLER_SB600;
}
/* Read ROM strap override register. */
OUTB(0x8f, 0xcd6);
reg = INB(0xcd7);
reg &= 0x0e;
printf_debug("ROM strap override is %sactive", (reg & 0x02) ? "" : "not ");
if (reg & 0x02) {
switch ((reg & 0x0c) >> 2) {
case 0x00:
printf_debug(": LPC");
break;
case 0x01:
printf_debug(": PCI");
break;
case 0x02:
printf_debug(": FWH");
break;
case 0x03:
printf_debug(": SPI");
break;
}
}
printf_debug("\n");
/* Force enable SPI ROM in SB600 PM register.
* If we enable SPI ROM here, we have to disable it after we leave.
* But how can we know which ROM we are going to handle? So we have
* to trade off. We only access LPC ROM if we boot via LPC ROM. And
* only SPI ROM if we boot via SPI ROM. If you want to access SPI on
* boards with LPC straps, you have to use the code below.
*/
/*
OUTB(0x8f, 0xcd6);
OUTB(0x0e, 0xcd7);
*/
return 0;
}
static int enable_flash_nvidia_nforce2(struct pci_dev *dev, const char *name)
{
uint8_t tmp;
pci_write_byte(dev, 0x92, 0);
tmp = pci_read_byte(dev, 0x6d);
tmp |= 0x01;
pci_write_byte(dev, 0x6d, tmp);
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_dev *smbusdev;
/* Look for the SMBus device. */
smbusdev = pci_dev_find(0x1002, 0x4372);
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 = mmio_readl(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 */
physunmap(mmcr, getpagesize());
return 0;
}
/* Please keep this list alphabetically sorted by vendor/device. */
const struct penable chipset_enables[] = {
{0x10B9, 0x1533, OK, "ALi", "M1533", enable_flash_ali_m1533},
{0x1022, 0x7440, OK, "AMD", "AMD-768", enable_flash_amd8111},
{0x1022, 0x7468, OK, "AMD", "AMD8111", enable_flash_amd8111},
{0x1078, 0x0100, OK, "AMD", "CS5530(A)", enable_flash_cs5530},
{0x1022, 0x2080, OK, "AMD", "CS5536", enable_flash_cs5536},
{0x1022, 0x3000, OK, "AMD", "Elan SC520", get_flashbase_sc520},
{0x1002, 0x438D, OK, "AMD", "SB600", enable_flash_sb600},
{0x1002, 0x439d, OK, "AMD", "SB700", enable_flash_sb600},
{0x100b, 0x0510, NT, "AMD", "SC1100", enable_flash_sc1100},
{0x1002, 0x4377, OK, "ATI", "SB400", enable_flash_sb400},
{0x1166, 0x0205, OK, "Broadcom", "HT-1000", enable_flash_ht1000},
{0x8086, 0x7198, OK, "Intel", "440MX", enable_flash_piix4},
{0x8086, 0x25a1, OK, "Intel", "6300ESB", enable_flash_ich_4e},
{0x8086, 0x2670, OK, "Intel", "631xESB/632xESB/3100", enable_flash_ich_dc},
{0x8086, 0x5031, OK, "Intel", "EP80579", enable_flash_ich7},
{0x8086, 0x2420, OK, "Intel", "ICH0", enable_flash_ich_4e},
{0x8086, 0x3a18, OK, "Intel", "ICH10", enable_flash_ich10},
{0x8086, 0x3a1a, OK, "Intel", "ICH10D", enable_flash_ich10},
{0x8086, 0x3a14, OK, "Intel", "ICH10DO", enable_flash_ich10},
{0x8086, 0x3a16, OK, "Intel", "ICH10R", enable_flash_ich10},
{0x8086, 0x2440, OK, "Intel", "ICH2", enable_flash_ich_4e},
{0x8086, 0x244c, OK, "Intel", "ICH2-M", enable_flash_ich_4e},
{0x8086, 0x248c, OK, "Intel", "ICH3-M", enable_flash_ich_4e},
{0x8086, 0x2480, OK, "Intel", "ICH3-S", enable_flash_ich_4e},
{0x8086, 0x24c0, OK, "Intel", "ICH4/ICH4-L", enable_flash_ich_4e},
{0x8086, 0x24cc, OK, "Intel", "ICH4-M", enable_flash_ich_4e},
{0x8086, 0x24d0, OK, "Intel", "ICH5/ICH5R", enable_flash_ich_4e},
{0x8086, 0x2640, OK, "Intel", "ICH6/ICH6R", enable_flash_ich_dc},
{0x8086, 0x2641, OK, "Intel", "ICH6-M", enable_flash_ich_dc},
{0x8086, 0x27b0, OK, "Intel", "ICH7DH", enable_flash_ich7},
{0x8086, 0x27b8, OK, "Intel", "ICH7/ICH7R", enable_flash_ich7},
{0x8086, 0x27b9, OK, "Intel", "ICH7M", enable_flash_ich7},
{0x8086, 0x27bd, OK, "Intel", "ICH7MDH", enable_flash_ich7},
{0x8086, 0x2410, OK, "Intel", "ICH", enable_flash_ich_4e},
{0x8086, 0x2812, OK, "Intel", "ICH8DH", enable_flash_ich8},
{0x8086, 0x2814, OK, "Intel", "ICH8DO", enable_flash_ich8},
{0x8086, 0x2810, OK, "Intel", "ICH8/ICH8R", enable_flash_ich8},
{0x8086, 0x2815, OK, "Intel", "ICH8M", enable_flash_ich8},
{0x8086, 0x2811, OK, "Intel", "ICH8M-E", enable_flash_ich8},
{0x8086, 0x2918, OK, "Intel", "ICH9", enable_flash_ich9},
{0x8086, 0x2912, OK, "Intel", "ICH9DH", enable_flash_ich9},
{0x8086, 0x2914, OK, "Intel", "ICH9DO", enable_flash_ich9},
{0x8086, 0x2919, OK, "Intel", "ICH9M", enable_flash_ich9},
{0x8086, 0x2917, OK, "Intel", "ICH9M-E", enable_flash_ich9},
{0x8086, 0x2916, OK, "Intel", "ICH9R", enable_flash_ich9},
{0x8086, 0x1234, NT, "Intel", "MPIIX", enable_flash_piix4},
{0x8086, 0x7000, OK, "Intel", "PIIX3", enable_flash_piix4},
{0x8086, 0x7110, OK, "Intel", "PIIX4/4E/4M", enable_flash_piix4},
{0x8086, 0x122e, OK, "Intel", "PIIX", enable_flash_piix4},
{0x10de, 0x0050, OK, "NVIDIA", "CK804", enable_flash_ck804}, /* LPC */
{0x10de, 0x0051, OK, "NVIDIA", "CK804", enable_flash_ck804}, /* Pro */
{0x10de, 0x0060, OK, "NVIDIA", "NForce2", enable_flash_nvidia_nforce2},
/* Slave, should not be here, to fix known bug for A01. */
{0x10de, 0x00d3, OK, "NVIDIA", "CK804", enable_flash_ck804},
{0x10de, 0x0260, NT, "NVIDIA", "MCP51", enable_flash_ck804},
{0x10de, 0x0261, NT, "NVIDIA", "MCP51", enable_flash_ck804},
{0x10de, 0x0262, NT, "NVIDIA", "MCP51", enable_flash_ck804},
{0x10de, 0x0263, NT, "NVIDIA", "MCP51", enable_flash_ck804},
{0x10de, 0x0360, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* M57SLI*/
{0x10de, 0x0361, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */
{0x10de, 0x0362, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */
{0x10de, 0x0363, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */
{0x10de, 0x0364, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */
{0x10de, 0x0365, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */
{0x10de, 0x0366, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */
{0x10de, 0x0367, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* Pro */
{0x10de, 0x0548, OK, "NVIDIA", "MCP67", enable_flash_mcp55},
{0x1039, 0x0008, OK, "SiS", "SiS5595", enable_flash_sis5595},
{0x1039, 0x0630, NT, "SiS", "SiS630", enable_flash_sis630},
{0x1106, 0x8324, OK, "VIA", "CX700", enable_flash_vt823x},
{0x1106, 0x8231, NT, "VIA", "VT8231", enable_flash_vt823x},
{0x1106, 0x3074, NT, "VIA", "VT8233", enable_flash_vt823x},
{0x1106, 0x3177, OK, "VIA", "VT8235", enable_flash_vt823x},
{0x1106, 0x3227, OK, "VIA", "VT8237", enable_flash_vt823x},
{0x1106, 0x3337, OK, "VIA", "VT8237A", enable_flash_vt823x},
{0x1106, 0x3372, OK, "VIA", "VT8237S", enable_flash_vt8237s_spi},
{0x1106, 0x8353, OK, "VIA", "VX800", enable_flash_vt8237s_spi},
{0x1106, 0x0586, OK, "VIA", "VT82C586A/B", enable_flash_amd8111},
{0x1106, 0x0686, NT, "VIA", "VT82C686A/B", enable_flash_amd8111},
{},
};
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; chipset_enables[i].vendor_name != NULL; i++) {
dev = pci_dev_find(chipset_enables[i].vendor_id,
chipset_enables[i].device_id);
if (dev)
break;
}
if (dev) {
printf("Found chipset \"%s %s\", enabling flash write... ",
chipset_enables[i].vendor_name,
chipset_enables[i].device_name);
ret = chipset_enables[i].doit(dev,
chipset_enables[i].device_name);
if (ret)
printf("FAILED!\n");
else
printf("OK.\n");
}
printf("This chipset supports the following protocols: %s.\n",
flashbuses_to_text(buses_supported));
return ret;
}