2 * This file is part of the flashrom project.
4 * Copyright (C) 2000 Silicon Integrated System Corporation
5 * Copyright (C) 2005-2007 coresystems GmbH <stepan@coresystems.de>
6 * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2 of the License.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 * Contains the chipset specific flash enables.
26 #define _LARGEFILE64_SOURCE
31 #include <sys/types.h>
38 unsigned long flashbase = 0;
41 * flashrom defaults to LPC flash devices. If a known SPI controller is found
42 * and the SPI strappings are set, this will be overwritten by the probing code.
44 * Eventually, this will become an array when multiple flash support works.
47 flashbus_t flashbus = BUS_TYPE_LPC;
50 extern int ichspi_lock;
52 static int enable_flash_ali_m1533(struct pci_dev *dev, const char *name)
57 * ROM Write enable, 0xFFFC0000-0xFFFDFFFF and
58 * 0xFFFE0000-0xFFFFFFFF ROM select enable.
60 tmp = pci_read_byte(dev, 0x47);
62 pci_write_byte(dev, 0x47, tmp);
67 static int enable_flash_sis630(struct pci_dev *dev, const char *name)
71 /* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630. */
72 b = pci_read_byte(dev, 0x40);
73 pci_write_byte(dev, 0x40, b | 0xb);
75 /* Flash write enable on SiS 540/630. */
76 b = pci_read_byte(dev, 0x45);
77 pci_write_byte(dev, 0x45, b | 0x40);
79 /* The same thing on SiS 950 Super I/O side... */
81 /* First probe for Super I/O on config port 0x2e. */
87 if (INB(0x2f) != 0x87) {
88 /* If that failed, try config port 0x4e. */
93 if (INB(0x4f) != 0x87) {
94 printf("Can not access SiS 950\n");
106 printf("2f is %#x\n", INB(0x2f));
107 b = INB(0x2f) | 0xfc;
118 * - Name: 82371AB PCI-TO-ISA / IDE XCELERATOR (PIIX4)
119 * - URL: http://www.intel.com/design/intarch/datashts/290562.htm
120 * - PDF: http://www.intel.com/design/intarch/datashts/29056201.pdf
121 * - Order Number: 290562-001
123 static int enable_flash_piix4(struct pci_dev *dev, const char *name)
126 uint16_t xbcs = 0x4e; /* X-Bus Chip Select register. */
128 old = pci_read_word(dev, xbcs);
130 /* Set bit 9: 1-Meg Extended BIOS Enable (PCI master accesses to
131 * FFF00000-FFF7FFFF are forwarded to ISA).
132 * Note: This bit is reserved on PIIX/PIIX3/MPIIX.
133 * Set bit 7: Extended BIOS Enable (PCI master accesses to
134 * FFF80000-FFFDFFFF are forwarded to ISA).
135 * Set bit 6: Lower BIOS Enable (PCI master, or ISA master accesses to
136 * the lower 64-Kbyte BIOS block (E0000-EFFFF) at the top
137 * of 1 Mbyte, or the aliases at the top of 4 Gbyte
138 * (FFFE0000-FFFEFFFF) result in the generation of BIOSCS#.
139 * Note: Accesses to FFFF0000-FFFFFFFF are always forwarded to ISA.
140 * Set bit 2: BIOSCS# Write Enable (1=enable, 0=disable).
142 if (dev->device_id == 0x122e || dev->device_id == 0x7000
143 || dev->device_id == 0x1234)
144 new = old | 0x00c4; /* PIIX/PIIX3/MPIIX: Bit 9 is reserved. */
151 pci_write_word(dev, xbcs, new);
153 if (pci_read_word(dev, xbcs) != new) {
154 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", xbcs, new, name);
162 * See ie. page 375 of "Intel I/O Controller Hub 7 (ICH7) Family Datasheet"
163 * http://download.intel.com/design/chipsets/datashts/30701303.pdf
165 static int enable_flash_ich(struct pci_dev *dev, const char *name,
171 * Note: the ICH0-ICH5 BIOS_CNTL register is actually 16 bit wide, but
172 * just treating it as 8 bit wide seems to work fine in practice.
174 old = pci_read_byte(dev, bios_cntl);
176 printf_debug("\nBIOS Lock Enable: %sabled, ",
177 (old & (1 << 1)) ? "en" : "dis");
178 printf_debug("BIOS Write Enable: %sabled, ",
179 (old & (1 << 0)) ? "en" : "dis");
180 printf_debug("BIOS_CNTL is 0x%x\n", old);
187 pci_write_byte(dev, bios_cntl, new);
189 if (pci_read_byte(dev, bios_cntl) != new) {
190 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", bios_cntl, new, name);
197 static int enable_flash_ich_4e(struct pci_dev *dev, const char *name)
199 return enable_flash_ich(dev, name, 0x4e);
202 static int enable_flash_ich_dc(struct pci_dev *dev, const char *name)
204 return enable_flash_ich(dev, name, 0xdc);
207 #define ICH_STRAP_RSVD 0x00
208 #define ICH_STRAP_SPI 0x01
209 #define ICH_STRAP_PCI 0x02
210 #define ICH_STRAP_LPC 0x03
212 static int enable_flash_vt8237s_spi(struct pci_dev *dev, const char *name)
216 mmio_base = (pci_read_long(dev, 0xbc)) << 8;
217 printf_debug("MMIO base at = 0x%x\n", mmio_base);
218 spibar = physmap("VT8237S MMIO registers", mmio_base, 0x70);
220 printf_debug("0x6c: 0x%04x (CLOCK/DEBUG)\n",
221 *(uint16_t *) (spibar + 0x6c));
223 flashbus = BUS_TYPE_VIA_SPI;
229 static int enable_flash_ich_dc_spi(struct pci_dev *dev, const char *name,
233 uint8_t old, new, bbs, buc;
234 uint16_t spibar_offset, tmp2;
237 //TODO: These names are incorrect for EP80579. For that, the solution would look like the commented line
238 //static const char *straps_names[] = {"SPI", "reserved", "reserved", "LPC" };
239 static const char *straps_names[] = { "reserved", "SPI", "PCI", "LPC" };
241 /* Enable Flash Writes */
242 ret = enable_flash_ich_dc(dev, name);
244 /* Get physical address of Root Complex Register Block */
245 tmp = pci_read_long(dev, 0xf0) & 0xffffc000;
246 printf_debug("\nRoot Complex Register Block address = 0x%x\n", tmp);
248 /* Map RCBA to virtual memory */
249 rcrb = physmap("ICH RCRB", tmp, 0x4000);
251 gcs = *(volatile uint32_t *)(rcrb + 0x3410);
252 printf_debug("GCS = 0x%x: ", gcs);
253 printf_debug("BIOS Interface Lock-Down: %sabled, ",
254 (gcs & 0x1) ? "en" : "dis");
255 bbs = (gcs >> 10) & 0x3;
256 printf_debug("BOOT BIOS Straps: 0x%x (%s)\n", bbs, straps_names[bbs]);
258 buc = *(volatile uint8_t *)(rcrb + 0x3414);
259 printf_debug("Top Swap : %s\n",
260 (buc & 1) ? "enabled (A16 inverted)" : "not enabled");
262 /* It seems the ICH7 does not support SPI and LPC chips at the same
263 * time. At least not with our current code. So we prevent searching
264 * on ICH7 when the southbridge is strapped to LPC
267 if (ich_generation == 7 && bbs == ICH_STRAP_LPC) {
268 /* No further SPI initialization required */
272 switch (ich_generation) {
274 flashbus = BUS_TYPE_ICH7_SPI;
275 spibar_offset = 0x3020;
278 flashbus = BUS_TYPE_ICH9_SPI;
279 spibar_offset = 0x3020;
283 default: /* Future version might behave the same */
284 flashbus = BUS_TYPE_ICH9_SPI;
285 spibar_offset = 0x3800;
289 /* SPIBAR is at RCRB+0x3020 for ICH[78] and RCRB+0x3800 for ICH9. */
290 printf_debug("SPIBAR = 0x%x + 0x%04x\n", tmp, spibar_offset);
292 /* Assign Virtual Address */
293 spibar = rcrb + spibar_offset;
296 case BUS_TYPE_ICH7_SPI:
297 printf_debug("0x00: 0x%04x (SPIS)\n",
298 *(uint16_t *) (spibar + 0));
299 printf_debug("0x02: 0x%04x (SPIC)\n",
300 *(uint16_t *) (spibar + 2));
301 printf_debug("0x04: 0x%08x (SPIA)\n",
302 *(uint32_t *) (spibar + 4));
303 for (i = 0; i < 8; i++) {
306 printf_debug("0x%02x: 0x%08x (SPID%d)\n", offs,
307 *(uint32_t *) (spibar + offs), i);
308 printf_debug("0x%02x: 0x%08x (SPID%d+4)\n", offs + 4,
309 *(uint32_t *) (spibar + offs + 4), i);
311 printf_debug("0x50: 0x%08x (BBAR)\n",
312 *(uint32_t *) (spibar + 0x50));
313 printf_debug("0x54: 0x%04x (PREOP)\n",
314 *(uint16_t *) (spibar + 0x54));
315 printf_debug("0x56: 0x%04x (OPTYPE)\n",
316 *(uint16_t *) (spibar + 0x56));
317 printf_debug("0x58: 0x%08x (OPMENU)\n",
318 *(uint32_t *) (spibar + 0x58));
319 printf_debug("0x5c: 0x%08x (OPMENU+4)\n",
320 *(uint32_t *) (spibar + 0x5c));
321 for (i = 0; i < 4; i++) {
323 offs = 0x60 + (i * 4);
324 printf_debug("0x%02x: 0x%08x (PBR%d)\n", offs,
325 *(uint32_t *) (spibar + offs), i);
328 if ((*(uint16_t *) spibar) & (1 << 15)) {
329 printf("WARNING: SPI Configuration Lockdown activated.\n");
334 case BUS_TYPE_ICH9_SPI:
335 tmp2 = *(uint16_t *) (spibar + 4);
336 printf_debug("0x04: 0x%04x (HSFS)\n", tmp2);
337 printf_debug("FLOCKDN %i, ", (tmp2 >> 15 & 1));
338 printf_debug("FDV %i, ", (tmp2 >> 14) & 1);
339 printf_debug("FDOPSS %i, ", (tmp2 >> 13) & 1);
340 printf_debug("SCIP %i, ", (tmp2 >> 5) & 1);
341 printf_debug("BERASE %i, ", (tmp2 >> 3) & 3);
342 printf_debug("AEL %i, ", (tmp2 >> 2) & 1);
343 printf_debug("FCERR %i, ", (tmp2 >> 1) & 1);
344 printf_debug("FDONE %i\n", (tmp2 >> 0) & 1);
346 tmp = *(uint32_t *) (spibar + 0x50);
347 printf_debug("0x50: 0x%08x (FRAP)\n", tmp);
348 printf_debug("BMWAG %i, ", (tmp >> 24) & 0xff);
349 printf_debug("BMRAG %i, ", (tmp >> 16) & 0xff);
350 printf_debug("BRWA %i, ", (tmp >> 8) & 0xff);
351 printf_debug("BRRA %i\n", (tmp >> 0) & 0xff);
353 printf_debug("0x54: 0x%08x (FREG0)\n",
354 *(uint32_t *) (spibar + 0x54));
355 printf_debug("0x58: 0x%08x (FREG1)\n",
356 *(uint32_t *) (spibar + 0x58));
357 printf_debug("0x5C: 0x%08x (FREG2)\n",
358 *(uint32_t *) (spibar + 0x5C));
359 printf_debug("0x60: 0x%08x (FREG3)\n",
360 *(uint32_t *) (spibar + 0x60));
361 printf_debug("0x64: 0x%08x (FREG4)\n",
362 *(uint32_t *) (spibar + 0x64));
363 printf_debug("0x74: 0x%08x (PR0)\n",
364 *(uint32_t *) (spibar + 0x74));
365 printf_debug("0x78: 0x%08x (PR1)\n",
366 *(uint32_t *) (spibar + 0x78));
367 printf_debug("0x7C: 0x%08x (PR2)\n",
368 *(uint32_t *) (spibar + 0x7C));
369 printf_debug("0x80: 0x%08x (PR3)\n",
370 *(uint32_t *) (spibar + 0x80));
371 printf_debug("0x84: 0x%08x (PR4)\n",
372 *(uint32_t *) (spibar + 0x84));
373 printf_debug("0x90: 0x%08x (SSFS, SSFC)\n",
374 *(uint32_t *) (spibar + 0x90));
375 printf_debug("0x94: 0x%04x (PREOP)\n",
376 *(uint16_t *) (spibar + 0x94));
377 printf_debug("0x96: 0x%04x (OPTYPE)\n",
378 *(uint16_t *) (spibar + 0x96));
379 printf_debug("0x98: 0x%08x (OPMENU)\n",
380 *(uint32_t *) (spibar + 0x98));
381 printf_debug("0x9C: 0x%08x (OPMENU+4)\n",
382 *(uint32_t *) (spibar + 0x9C));
383 printf_debug("0xA0: 0x%08x (BBAR)\n",
384 *(uint32_t *) (spibar + 0xA0));
385 printf_debug("0xB0: 0x%08x (FDOC)\n",
386 *(uint32_t *) (spibar + 0xB0));
387 if (tmp2 & (1 << 15)) {
388 printf("WARNING: SPI Configuration Lockdown activated.\n");
398 old = pci_read_byte(dev, 0xdc);
399 printf_debug("SPI Read Configuration: ");
400 new = (old >> 2) & 0x3;
405 printf_debug("prefetching %sabled, caching %sabled, ",
406 (new & 0x2) ? "en" : "dis",
407 (new & 0x1) ? "dis" : "en");
410 printf_debug("invalid prefetching/caching settings, ");
417 static int enable_flash_ich7(struct pci_dev *dev, const char *name)
419 return enable_flash_ich_dc_spi(dev, name, 7);
422 static int enable_flash_ich8(struct pci_dev *dev, const char *name)
424 return enable_flash_ich_dc_spi(dev, name, 8);
427 static int enable_flash_ich9(struct pci_dev *dev, const char *name)
429 return enable_flash_ich_dc_spi(dev, name, 9);
432 static int enable_flash_ich10(struct pci_dev *dev, const char *name)
434 return enable_flash_ich_dc_spi(dev, name, 10);
437 static int enable_flash_vt823x(struct pci_dev *dev, const char *name)
441 /* enable ROM decode range (1MB) FFC00000 - FFFFFFFF */
442 pci_write_byte(dev, 0x41, 0x7f);
444 /* ROM write enable */
445 val = pci_read_byte(dev, 0x40);
447 pci_write_byte(dev, 0x40, val);
449 if (pci_read_byte(dev, 0x40) != val) {
450 printf("\nWARNING: Failed to enable ROM Write on \"%s\"\n",
458 static int enable_flash_cs5530(struct pci_dev *dev, const char *name)
462 #define DECODE_CONTROL_REG2 0x5b /* F0 index 0x5b */
463 #define ROM_AT_LOGIC_CONTROL_REG 0x52 /* F0 index 0x52 */
465 #define LOWER_ROM_ADDRESS_RANGE (1 << 0)
466 #define ROM_WRITE_ENABLE (1 << 1)
467 #define UPPER_ROM_ADDRESS_RANGE (1 << 2)
468 #define BIOS_ROM_POSITIVE_DECODE (1 << 5)
470 /* Decode 0x000E0000-0x000FFFFF (128 KB), not just 64 KB, and
471 * decode 0xFF000000-0xFFFFFFFF (16 MB), not just 256 KB.
472 * Make the configured ROM areas writable.
474 reg8 = pci_read_byte(dev, ROM_AT_LOGIC_CONTROL_REG);
475 reg8 |= LOWER_ROM_ADDRESS_RANGE;
476 reg8 |= UPPER_ROM_ADDRESS_RANGE;
477 reg8 |= ROM_WRITE_ENABLE;
478 pci_write_byte(dev, ROM_AT_LOGIC_CONTROL_REG, reg8);
480 /* Set positive decode on ROM. */
481 reg8 = pci_read_byte(dev, DECODE_CONTROL_REG2);
482 reg8 |= BIOS_ROM_POSITIVE_DECODE;
483 pci_write_byte(dev, DECODE_CONTROL_REG2, reg8);
489 * Geode systems write protect the BIOS via RCONFs (cache settings similar
490 * to MTRRs). To unlock, change MSR 0x1808 top byte to 0x22. Reading and
491 * writing to MSRs, however requires instructions rdmsr/wrmsr, which are
492 * ring0 privileged instructions so only the kernel can do the read/write.
493 * This function, therefore, requires that the msr kernel module be loaded
494 * to access these instructions from user space using device /dev/cpu/0/msr.
496 * This hard-coded location could have potential problems on SMP machines
497 * since it assumes cpu0, but it is safe on the Geode which is not SMP.
499 * Geode systems also write protect the NOR flash chip itself via MSR_NORF_CTL.
500 * To enable write to NOR Boot flash for the benefit of systems that have such
501 * a setup, raise MSR 0x51400018 WE_CS3 (write enable Boot Flash Chip Select).
503 * This is probably not portable beyond Linux.
505 static int enable_flash_cs5536(struct pci_dev *dev, const char *name)
507 #define MSR_RCONF_DEFAULT 0x1808
508 #define MSR_NORF_CTL 0x51400018
511 unsigned char buf[8];
513 fd_msr = open("/dev/cpu/0/msr", O_RDWR);
519 if (lseek64(fd_msr, (off64_t) MSR_RCONF_DEFAULT, SEEK_SET) == -1) {
521 printf("Cannot operate on MSR. Did you run 'modprobe msr'?\n");
526 if (read(fd_msr, buf, 8) != 8) {
532 if (buf[7] != 0x22) {
534 if (lseek64(fd_msr, (off64_t) MSR_RCONF_DEFAULT,
541 if (write(fd_msr, buf, 8) < 0) {
548 if (lseek64(fd_msr, (off64_t) MSR_NORF_CTL, SEEK_SET) == -1) {
554 if (read(fd_msr, buf, 8) != 8) {
560 /* Raise WE_CS3 bit. */
563 if (lseek64(fd_msr, (off64_t) MSR_NORF_CTL, SEEK_SET) == -1) {
568 if (write(fd_msr, buf, 8) < 0) {
576 #undef MSR_RCONF_DEFAULT
581 static int enable_flash_sc1100(struct pci_dev *dev, const char *name)
585 pci_write_byte(dev, 0x52, 0xee);
587 new = pci_read_byte(dev, 0x52);
590 printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x52, new, name);
597 static int enable_flash_sis5595(struct pci_dev *dev, const char *name)
601 new = pci_read_byte(dev, 0x45);
603 new &= (~0x20); /* Clear bit 5. */
604 new |= 0x4; /* Set bit 2. */
606 pci_write_byte(dev, 0x45, new);
608 newer = pci_read_byte(dev, 0x45);
610 printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x45, new, name);
611 printf("Stuck at 0x%x\n", newer);
615 /* Extended BIOS enable = 1, Lower BIOS Enable = 1 */
616 new = pci_read_byte(dev, 0x40);
619 pci_write_byte(dev, 0x40, new);
620 newer = pci_read_byte(dev, 0x40);
622 printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x40, new, name);
623 printf("Stuck at 0x%x\n", newer);
629 /* Works for AMD-8111, VIA VT82C586A/B, VIA VT82C686A/B. */
630 static int enable_flash_amd8111(struct pci_dev *dev, const char *name)
634 /* Enable decoding at 0xffb00000 to 0xffffffff. */
635 old = pci_read_byte(dev, 0x43);
638 pci_write_byte(dev, 0x43, new);
639 if (pci_read_byte(dev, 0x43) != new) {
640 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x43, new, name);
644 /* Enable 'ROM write' bit. */
645 old = pci_read_byte(dev, 0x40);
649 pci_write_byte(dev, 0x40, new);
651 if (pci_read_byte(dev, 0x40) != new) {
652 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x40, new, name);
659 static int enable_flash_sb600(struct pci_dev *dev, const char *name)
661 uint32_t tmp, low_bits, num;
664 low_bits = tmp = pci_read_long(dev, 0xa0);
665 low_bits &= ~0xffffc000; /* for mmap aligning requirements */
666 low_bits &= 0xfffffff0; /* remove low 4 bits */
668 printf_debug("SPI base address is at 0x%x\n", tmp + low_bits);
670 sb600_spibar = physmap("SB600 SPI registers", tmp, 0x4000);
671 sb600_spibar += low_bits;
673 /* Clear ROM protect 0-3. */
674 for (reg = 0x50; reg < 0x60; reg += 4) {
675 num = pci_read_long(dev, reg);
677 pci_write_byte(dev, reg, num);
680 flashbus = BUS_TYPE_SB600_SPI;
682 /* Enable SPI ROM in SB600 PM register. */
689 static int enable_flash_ck804(struct pci_dev *dev, const char *name)
693 old = pci_read_byte(dev, 0x88);
696 pci_write_byte(dev, 0x88, new);
697 if (pci_read_byte(dev, 0x88) != new) {
698 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x88, new, name);
702 old = pci_read_byte(dev, 0x6d);
706 pci_write_byte(dev, 0x6d, new);
708 if (pci_read_byte(dev, 0x6d) != new) {
709 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x6d, new, name);
716 /* ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80) */
717 static int enable_flash_sb400(struct pci_dev *dev, const char *name)
721 struct pci_dev *smbusdev;
723 /* Look for the SMBus device. */
724 pci_filter_init((struct pci_access *)0, &f);
728 for (smbusdev = pacc->devices; smbusdev; smbusdev = smbusdev->next) {
729 if (pci_filter_match(&f, smbusdev))
734 fprintf(stderr, "ERROR: SMBus device not found. Aborting.\n");
738 /* Enable some SMBus stuff. */
739 tmp = pci_read_byte(smbusdev, 0x79);
741 pci_write_byte(smbusdev, 0x79, tmp);
743 /* Change southbridge. */
744 tmp = pci_read_byte(dev, 0x48);
746 pci_write_byte(dev, 0x48, tmp);
748 /* Now become a bit silly. */
760 static int enable_flash_mcp55(struct pci_dev *dev, const char *name)
762 uint8_t old, new, byte;
765 /* Set the 0-16 MB enable bits. */
766 byte = pci_read_byte(dev, 0x88);
767 byte |= 0xff; /* 256K */
768 pci_write_byte(dev, 0x88, byte);
769 byte = pci_read_byte(dev, 0x8c);
770 byte |= 0xff; /* 1M */
771 pci_write_byte(dev, 0x8c, byte);
772 word = pci_read_word(dev, 0x90);
773 word |= 0x7fff; /* 16M */
774 pci_write_word(dev, 0x90, word);
776 old = pci_read_byte(dev, 0x6d);
780 pci_write_byte(dev, 0x6d, new);
782 if (pci_read_byte(dev, 0x6d) != new) {
783 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x6d, new, name);
790 static int enable_flash_ht1000(struct pci_dev *dev, const char *name)
794 /* Set the 4MB enable bit. */
795 byte = pci_read_byte(dev, 0x41);
797 pci_write_byte(dev, 0x41, byte);
799 byte = pci_read_byte(dev, 0x43);
801 pci_write_byte(dev, 0x43, byte);
807 * Usually on the x86 architectures (and on other PC-like platforms like some
808 * Alphas or Itanium) the system flash is mapped right below 4G. On the AMD
809 * Elan SC520 only a small piece of the system flash is mapped there, but the
810 * complete flash is mapped somewhere below 1G. The position can be determined
811 * by the BOOTCS PAR register.
813 static int get_flashbase_sc520(struct pci_dev *dev, const char *name)
815 int i, bootcs_found = 0;
820 mmcr = physmap("Elan SC520 MMCR", 0xfffef000, getpagesize());
822 /* 2. Scan PAR0 (0x88) - PAR15 (0xc4) for
823 * BOOTCS region (PARx[31:29] = 100b)e
825 for (i = 0x88; i <= 0xc4; i += 4) {
826 parx = *(volatile uint32_t *)(mmcr + i);
827 if ((parx >> 29) == 4) {
829 break; /* BOOTCS found */
833 /* 3. PARx[25] = 1b --> flashbase[29:16] = PARx[13:0]
834 * PARx[25] = 0b --> flashbase[29:12] = PARx[17:0]
837 if (parx & (1 << 25)) {
838 parx &= (1 << 14) - 1; /* Mask [13:0] */
839 flashbase = parx << 16;
841 parx &= (1 << 18) - 1; /* Mask [17:0] */
842 flashbase = parx << 12;
845 printf("AMD Elan SC520 detected, but no BOOTCS. Assuming flash at 4G\n");
849 munmap (mmcr, getpagesize());
853 typedef struct penable {
854 uint16_t vendor, device;
856 int (*doit) (struct pci_dev *dev, const char *name);
859 static const FLASH_ENABLE enables[] = {
860 {0x1039, 0x0630, "SiS630", enable_flash_sis630},
861 {0x8086, 0x122e, "Intel PIIX", enable_flash_piix4},
862 {0x8086, 0x1234, "Intel MPIIX", enable_flash_piix4},
863 {0x8086, 0x7000, "Intel PIIX3", enable_flash_piix4},
864 {0x8086, 0x7110, "Intel PIIX4/4E/4M", enable_flash_piix4},
865 {0x8086, 0x7198, "Intel 440MX", enable_flash_piix4},
866 {0x8086, 0x2410, "Intel ICH", enable_flash_ich_4e},
867 {0x8086, 0x2420, "Intel ICH0", enable_flash_ich_4e},
868 {0x8086, 0x2440, "Intel ICH2", enable_flash_ich_4e},
869 {0x8086, 0x244c, "Intel ICH2-M", enable_flash_ich_4e},
870 {0x8086, 0x2480, "Intel ICH3-S", enable_flash_ich_4e},
871 {0x8086, 0x248c, "Intel ICH3-M", enable_flash_ich_4e},
872 {0x8086, 0x24c0, "Intel ICH4/ICH4-L", enable_flash_ich_4e},
873 {0x8086, 0x24cc, "Intel ICH4-M", enable_flash_ich_4e},
874 {0x8086, 0x24d0, "Intel ICH5/ICH5R", enable_flash_ich_4e},
875 {0x8086, 0x25a1, "Intel 6300ESB", enable_flash_ich_4e},
876 {0x8086, 0x2670, "Intel 631xESB/632xESB/3100", enable_flash_ich_dc},
877 {0x8086, 0x2640, "Intel ICH6/ICH6R", enable_flash_ich_dc},
878 {0x8086, 0x2641, "Intel ICH6-M", enable_flash_ich_dc},
879 {0x8086, 0x5031, "Intel EP80579", enable_flash_ich7},
880 {0x8086, 0x27b0, "Intel ICH7DH", enable_flash_ich7},
881 {0x8086, 0x27b8, "Intel ICH7/ICH7R", enable_flash_ich7},
882 {0x8086, 0x27b9, "Intel ICH7M", enable_flash_ich7},
883 {0x8086, 0x27bd, "Intel ICH7MDH", enable_flash_ich7},
884 {0x8086, 0x2810, "Intel ICH8/ICH8R", enable_flash_ich8},
885 {0x8086, 0x2811, "Intel ICH8M-E", enable_flash_ich8},
886 {0x8086, 0x2812, "Intel ICH8DH", enable_flash_ich8},
887 {0x8086, 0x2814, "Intel ICH8DO", enable_flash_ich8},
888 {0x8086, 0x2815, "Intel ICH8M", enable_flash_ich8},
889 {0x8086, 0x2912, "Intel ICH9DH", enable_flash_ich9},
890 {0x8086, 0x2914, "Intel ICH9DO", enable_flash_ich9},
891 {0x8086, 0x2916, "Intel ICH9R", enable_flash_ich9},
892 {0x8086, 0x2917, "Intel ICH9M-E", enable_flash_ich9},
893 {0x8086, 0x2918, "Intel ICH9", enable_flash_ich9},
894 {0x8086, 0x2919, "Intel ICH9M", enable_flash_ich9},
895 {0x8086, 0x3a14, "Intel ICH10DO", enable_flash_ich10},
896 {0x8086, 0x3a16, "Intel ICH10R", enable_flash_ich10},
897 {0x8086, 0x3a18, "Intel ICH10", enable_flash_ich10},
898 {0x8086, 0x3a1a, "Intel ICH10D", enable_flash_ich10},
899 {0x1106, 0x8231, "VIA VT8231", enable_flash_vt823x},
900 {0x1106, 0x3177, "VIA VT8235", enable_flash_vt823x},
901 {0x1106, 0x3227, "VIA VT8237", enable_flash_vt823x},
902 {0x1106, 0x3337, "VIA VT8237A", enable_flash_vt823x},
903 {0x1106, 0x3372, "VIA VT8237S", enable_flash_vt8237s_spi},
904 {0x1106, 0x8324, "VIA CX700", enable_flash_vt823x},
905 {0x1106, 0x0586, "VIA VT82C586A/B", enable_flash_amd8111},
906 {0x1106, 0x0686, "VIA VT82C686A/B", enable_flash_amd8111},
907 {0x1078, 0x0100, "AMD CS5530(A)", enable_flash_cs5530},
908 {0x100b, 0x0510, "AMD SC1100", enable_flash_sc1100},
909 {0x1039, 0x0008, "SiS5595", enable_flash_sis5595},
910 {0x1022, 0x2080, "AMD CS5536", enable_flash_cs5536},
911 {0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
912 {0x1002, 0x438D, "ATI(AMD) SB600", enable_flash_sb600},
913 {0x1002, 0x439d, "ATI(AMD) SB700", enable_flash_sb600},
914 {0x10B9, 0x1533, "ALi M1533", enable_flash_ali_m1533},
915 {0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */
916 {0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */
917 /* Slave, should not be here, to fix known bug for A01. */
918 {0x10de, 0x00d3, "NVIDIA CK804", enable_flash_ck804},
919 {0x10de, 0x0260, "NVIDIA MCP51", enable_flash_ck804},
920 {0x10de, 0x0261, "NVIDIA MCP51", enable_flash_ck804},
921 {0x10de, 0x0262, "NVIDIA MCP51", enable_flash_ck804},
922 {0x10de, 0x0263, "NVIDIA MCP51", enable_flash_ck804},
923 {0x10de, 0x0360, "NVIDIA MCP55", enable_flash_mcp55}, /* M57SLI*/
924 {0x10de, 0x0361, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
925 {0x10de, 0x0362, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
926 {0x10de, 0x0363, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
927 {0x10de, 0x0364, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
928 {0x10de, 0x0365, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
929 {0x10de, 0x0366, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
930 {0x10de, 0x0367, "NVIDIA MCP55", enable_flash_mcp55}, /* Pro */
931 {0x10de, 0x0548, "NVIDIA MCP67", enable_flash_mcp55},
932 {0x1002, 0x4377, "ATI SB400", enable_flash_sb400},
933 {0x1166, 0x0205, "Broadcom HT-1000", enable_flash_ht1000},
934 {0x1022, 0x3000, "AMD Elan SC520", get_flashbase_sc520},
935 {0x1022, 0x7440, "AMD AMD-768", enable_flash_amd8111},
938 void print_supported_chipsets(void)
942 printf("\nSupported chipsets:\n\n");
944 for (i = 0; i < ARRAY_SIZE(enables); i++)
945 printf("%s (%04x:%04x)\n", enables[i].name,
946 enables[i].vendor, enables[i].device);
949 int chipset_flash_enable(void)
951 struct pci_dev *dev = 0;
952 int ret = -2; /* Nothing! */
955 /* Now let's try to find the chipset we have... */
956 for (i = 0; i < ARRAY_SIZE(enables); i++) {
957 dev = pci_dev_find(enables[i].vendor, enables[i].device);
963 printf("Found chipset \"%s\", enabling flash write... ",
966 ret = enables[i].doit(dev, enables[i].name);