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;
228 static int enable_flash_ich_dc_spi(struct pci_dev *dev, const char *name,
232 uint8_t old, new, bbs, buc;
233 uint16_t spibar_offset, tmp2;
236 //TODO: These names are incorrect for EP80579. For that, the solution would look like the commented line
237 //static const char *straps_names[] = {"SPI", "reserved", "reserved", "LPC" };
238 static const char *straps_names[] = { "reserved", "SPI", "PCI", "LPC" };
240 /* Enable Flash Writes */
241 ret = enable_flash_ich_dc(dev, name);
243 /* Get physical address of Root Complex Register Block */
244 tmp = pci_read_long(dev, 0xf0) & 0xffffc000;
245 printf_debug("\nRoot Complex Register Block address = 0x%x\n", tmp);
247 /* Map RCBA to virtual memory */
248 rcrb = physmap("ICH RCRB", tmp, 0x4000);
250 gcs = *(volatile uint32_t *)(rcrb + 0x3410);
251 printf_debug("GCS = 0x%x: ", gcs);
252 printf_debug("BIOS Interface Lock-Down: %sabled, ",
253 (gcs & 0x1) ? "en" : "dis");
254 bbs = (gcs >> 10) & 0x3;
255 printf_debug("BOOT BIOS Straps: 0x%x (%s)\n", bbs, straps_names[bbs]);
257 buc = *(volatile uint8_t *)(rcrb + 0x3414);
258 printf_debug("Top Swap : %s\n",
259 (buc & 1) ? "enabled (A16 inverted)" : "not enabled");
261 /* It seems the ICH7 does not support SPI and LPC chips at the same
262 * time. At least not with our current code. So we prevent searching
263 * on ICH7 when the southbridge is strapped to LPC
266 if (ich_generation == 7 && bbs == ICH_STRAP_LPC) {
267 /* No further SPI initialization required */
271 switch (ich_generation) {
273 flashbus = BUS_TYPE_ICH7_SPI;
274 spibar_offset = 0x3020;
277 flashbus = BUS_TYPE_ICH9_SPI;
278 spibar_offset = 0x3020;
282 default: /* Future version might behave the same */
283 flashbus = BUS_TYPE_ICH9_SPI;
284 spibar_offset = 0x3800;
288 /* SPIBAR is at RCRB+0x3020 for ICH[78] and RCRB+0x3800 for ICH9. */
289 printf_debug("SPIBAR = 0x%x + 0x%04x\n", tmp, spibar_offset);
291 /* Assign Virtual Address */
292 spibar = rcrb + spibar_offset;
295 case BUS_TYPE_ICH7_SPI:
296 printf_debug("0x00: 0x%04x (SPIS)\n",
297 *(uint16_t *) (spibar + 0));
298 printf_debug("0x02: 0x%04x (SPIC)\n",
299 *(uint16_t *) (spibar + 2));
300 printf_debug("0x04: 0x%08x (SPIA)\n",
301 *(uint32_t *) (spibar + 4));
302 for (i = 0; i < 8; i++) {
305 printf_debug("0x%02x: 0x%08x (SPID%d)\n", offs,
306 *(uint32_t *) (spibar + offs), i);
307 printf_debug("0x%02x: 0x%08x (SPID%d+4)\n", offs + 4,
308 *(uint32_t *) (spibar + offs + 4), i);
310 printf_debug("0x50: 0x%08x (BBAR)\n",
311 *(uint32_t *) (spibar + 0x50));
312 printf_debug("0x54: 0x%04x (PREOP)\n",
313 *(uint16_t *) (spibar + 0x54));
314 printf_debug("0x56: 0x%04x (OPTYPE)\n",
315 *(uint16_t *) (spibar + 0x56));
316 printf_debug("0x58: 0x%08x (OPMENU)\n",
317 *(uint32_t *) (spibar + 0x58));
318 printf_debug("0x5c: 0x%08x (OPMENU+4)\n",
319 *(uint32_t *) (spibar + 0x5c));
320 for (i = 0; i < 4; i++) {
322 offs = 0x60 + (i * 4);
323 printf_debug("0x%02x: 0x%08x (PBR%d)\n", offs,
324 *(uint32_t *) (spibar + offs), i);
327 if ((*(uint16_t *) spibar) & (1 << 15)) {
328 printf("WARNING: SPI Configuration Lockdown activated.\n");
333 case BUS_TYPE_ICH9_SPI:
334 tmp2 = *(uint16_t *) (spibar + 4);
335 printf_debug("0x04: 0x%04x (HSFS)\n", tmp2);
336 printf_debug("FLOCKDN %i, ", (tmp2 >> 15 & 1));
337 printf_debug("FDV %i, ", (tmp2 >> 14) & 1);
338 printf_debug("FDOPSS %i, ", (tmp2 >> 13) & 1);
339 printf_debug("SCIP %i, ", (tmp2 >> 5) & 1);
340 printf_debug("BERASE %i, ", (tmp2 >> 3) & 3);
341 printf_debug("AEL %i, ", (tmp2 >> 2) & 1);
342 printf_debug("FCERR %i, ", (tmp2 >> 1) & 1);
343 printf_debug("FDONE %i\n", (tmp2 >> 0) & 1);
345 tmp = *(uint32_t *) (spibar + 0x50);
346 printf_debug("0x50: 0x%08x (FRAP)\n", tmp);
347 printf_debug("BMWAG %i, ", (tmp >> 24) & 0xff);
348 printf_debug("BMRAG %i, ", (tmp >> 16) & 0xff);
349 printf_debug("BRWA %i, ", (tmp >> 8) & 0xff);
350 printf_debug("BRRA %i\n", (tmp >> 0) & 0xff);
352 printf_debug("0x54: 0x%08x (FREG0)\n",
353 *(uint32_t *) (spibar + 0x54));
354 printf_debug("0x58: 0x%08x (FREG1)\n",
355 *(uint32_t *) (spibar + 0x58));
356 printf_debug("0x5C: 0x%08x (FREG2)\n",
357 *(uint32_t *) (spibar + 0x5C));
358 printf_debug("0x60: 0x%08x (FREG3)\n",
359 *(uint32_t *) (spibar + 0x60));
360 printf_debug("0x64: 0x%08x (FREG4)\n",
361 *(uint32_t *) (spibar + 0x64));
362 printf_debug("0x74: 0x%08x (PR0)\n",
363 *(uint32_t *) (spibar + 0x74));
364 printf_debug("0x78: 0x%08x (PR1)\n",
365 *(uint32_t *) (spibar + 0x78));
366 printf_debug("0x7C: 0x%08x (PR2)\n",
367 *(uint32_t *) (spibar + 0x7C));
368 printf_debug("0x80: 0x%08x (PR3)\n",
369 *(uint32_t *) (spibar + 0x80));
370 printf_debug("0x84: 0x%08x (PR4)\n",
371 *(uint32_t *) (spibar + 0x84));
372 printf_debug("0x90: 0x%08x (SSFS, SSFC)\n",
373 *(uint32_t *) (spibar + 0x90));
374 printf_debug("0x94: 0x%04x (PREOP)\n",
375 *(uint16_t *) (spibar + 0x94));
376 printf_debug("0x96: 0x%04x (OPTYPE)\n",
377 *(uint16_t *) (spibar + 0x96));
378 printf_debug("0x98: 0x%08x (OPMENU)\n",
379 *(uint32_t *) (spibar + 0x98));
380 printf_debug("0x9C: 0x%08x (OPMENU+4)\n",
381 *(uint32_t *) (spibar + 0x9C));
382 printf_debug("0xA0: 0x%08x (BBAR)\n",
383 *(uint32_t *) (spibar + 0xA0));
384 printf_debug("0xB0: 0x%08x (FDOC)\n",
385 *(uint32_t *) (spibar + 0xB0));
386 if (tmp2 & (1 << 15)) {
387 printf("WARNING: SPI Configuration Lockdown activated.\n");
397 old = pci_read_byte(dev, 0xdc);
398 printf_debug("SPI Read Configuration: ");
399 new = (old >> 2) & 0x3;
404 printf_debug("prefetching %sabled, caching %sabled, ",
405 (new & 0x2) ? "en" : "dis",
406 (new & 0x1) ? "dis" : "en");
409 printf_debug("invalid prefetching/caching settings, ");
416 static int enable_flash_ich7(struct pci_dev *dev, const char *name)
418 return enable_flash_ich_dc_spi(dev, name, 7);
421 static int enable_flash_ich8(struct pci_dev *dev, const char *name)
423 return enable_flash_ich_dc_spi(dev, name, 8);
426 static int enable_flash_ich9(struct pci_dev *dev, const char *name)
428 return enable_flash_ich_dc_spi(dev, name, 9);
431 static int enable_flash_ich10(struct pci_dev *dev, const char *name)
433 return enable_flash_ich_dc_spi(dev, name, 10);
436 static int enable_flash_vt823x(struct pci_dev *dev, const char *name)
440 /* enable ROM decode range (1MB) FFC00000 - FFFFFFFF */
441 pci_write_byte(dev, 0x41, 0x7f);
443 /* ROM write enable */
444 val = pci_read_byte(dev, 0x40);
446 pci_write_byte(dev, 0x40, val);
448 if (pci_read_byte(dev, 0x40) != val) {
449 printf("\nWARNING: Failed to enable ROM Write on \"%s\"\n",
457 static int enable_flash_cs5530(struct pci_dev *dev, const char *name)
461 #define DECODE_CONTROL_REG2 0x5b /* F0 index 0x5b */
462 #define ROM_AT_LOGIC_CONTROL_REG 0x52 /* F0 index 0x52 */
464 #define LOWER_ROM_ADDRESS_RANGE (1 << 0)
465 #define ROM_WRITE_ENABLE (1 << 1)
466 #define UPPER_ROM_ADDRESS_RANGE (1 << 2)
467 #define BIOS_ROM_POSITIVE_DECODE (1 << 5)
469 /* Decode 0x000E0000-0x000FFFFF (128 KB), not just 64 KB, and
470 * decode 0xFF000000-0xFFFFFFFF (16 MB), not just 256 KB.
471 * Make the configured ROM areas writable.
473 reg8 = pci_read_byte(dev, ROM_AT_LOGIC_CONTROL_REG);
474 reg8 |= LOWER_ROM_ADDRESS_RANGE;
475 reg8 |= UPPER_ROM_ADDRESS_RANGE;
476 reg8 |= ROM_WRITE_ENABLE;
477 pci_write_byte(dev, ROM_AT_LOGIC_CONTROL_REG, reg8);
479 /* Set positive decode on ROM. */
480 reg8 = pci_read_byte(dev, DECODE_CONTROL_REG2);
481 reg8 |= BIOS_ROM_POSITIVE_DECODE;
482 pci_write_byte(dev, DECODE_CONTROL_REG2, reg8);
488 * Geode systems write protect the BIOS via RCONFs (cache settings similar
489 * to MTRRs). To unlock, change MSR 0x1808 top byte to 0x22. Reading and
490 * writing to MSRs, however requires instructions rdmsr/wrmsr, which are
491 * ring0 privileged instructions so only the kernel can do the read/write.
492 * This function, therefore, requires that the msr kernel module be loaded
493 * to access these instructions from user space using device /dev/cpu/0/msr.
495 * This hard-coded location could have potential problems on SMP machines
496 * since it assumes cpu0, but it is safe on the Geode which is not SMP.
498 * Geode systems also write protect the NOR flash chip itself via MSR_NORF_CTL.
499 * To enable write to NOR Boot flash for the benefit of systems that have such
500 * a setup, raise MSR 0x51400018 WE_CS3 (write enable Boot Flash Chip Select).
502 * This is probably not portable beyond Linux.
504 static int enable_flash_cs5536(struct pci_dev *dev, const char *name)
506 #define MSR_RCONF_DEFAULT 0x1808
507 #define MSR_NORF_CTL 0x51400018
510 unsigned char buf[8];
512 fd_msr = open("/dev/cpu/0/msr", O_RDWR);
518 if (lseek64(fd_msr, (off64_t) MSR_RCONF_DEFAULT, SEEK_SET) == -1) {
520 printf("Cannot operate on MSR. Did you run 'modprobe msr'?\n");
525 if (read(fd_msr, buf, 8) != 8) {
531 if (buf[7] != 0x22) {
533 if (lseek64(fd_msr, (off64_t) MSR_RCONF_DEFAULT,
540 if (write(fd_msr, buf, 8) < 0) {
547 if (lseek64(fd_msr, (off64_t) MSR_NORF_CTL, SEEK_SET) == -1) {
553 if (read(fd_msr, buf, 8) != 8) {
559 /* Raise WE_CS3 bit. */
562 if (lseek64(fd_msr, (off64_t) MSR_NORF_CTL, SEEK_SET) == -1) {
567 if (write(fd_msr, buf, 8) < 0) {
575 #undef MSR_RCONF_DEFAULT
580 static int enable_flash_sc1100(struct pci_dev *dev, const char *name)
584 pci_write_byte(dev, 0x52, 0xee);
586 new = pci_read_byte(dev, 0x52);
589 printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x52, new, name);
596 static int enable_flash_sis5595(struct pci_dev *dev, const char *name)
600 new = pci_read_byte(dev, 0x45);
602 new &= (~0x20); /* Clear bit 5. */
603 new |= 0x4; /* Set bit 2. */
605 pci_write_byte(dev, 0x45, new);
607 newer = pci_read_byte(dev, 0x45);
609 printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x45, new, name);
610 printf("Stuck at 0x%x\n", newer);
614 /* Extended BIOS enable = 1, Lower BIOS Enable = 1 */
615 new = pci_read_byte(dev, 0x40);
618 pci_write_byte(dev, 0x40, new);
619 newer = pci_read_byte(dev, 0x40);
621 printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x40, new, name);
622 printf("Stuck at 0x%x\n", newer);
628 /* Works for AMD-8111, VIA VT82C586A/B, VIA VT82C686A/B. */
629 static int enable_flash_amd8111(struct pci_dev *dev, const char *name)
633 /* Enable decoding at 0xffb00000 to 0xffffffff. */
634 old = pci_read_byte(dev, 0x43);
637 pci_write_byte(dev, 0x43, new);
638 if (pci_read_byte(dev, 0x43) != new) {
639 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x43, new, name);
643 /* Enable 'ROM write' bit. */
644 old = pci_read_byte(dev, 0x40);
648 pci_write_byte(dev, 0x40, new);
650 if (pci_read_byte(dev, 0x40) != new) {
651 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x40, new, name);
658 static int enable_flash_sb600(struct pci_dev *dev, const char *name)
660 uint32_t tmp, low_bits, num;
663 low_bits = tmp = pci_read_long(dev, 0xa0);
664 low_bits &= ~0xffffc000; /* for mmap aligning requirements */
665 low_bits &= 0xfffffff0; /* remove low 4 bits */
667 printf_debug("SPI base address is at 0x%x\n", tmp + low_bits);
669 sb600_spibar = physmap("SB600 SPI registers", tmp, 0x4000);
670 sb600_spibar += low_bits;
672 /* Clear ROM protect 0-3. */
673 for (reg = 0x50; reg < 0x60; reg += 4) {
674 num = pci_read_long(dev, reg);
676 pci_write_byte(dev, reg, num);
679 flashbus = BUS_TYPE_SB600_SPI;
681 /* Enable SPI ROM in SB600 PM register. */
688 static int enable_flash_ck804(struct pci_dev *dev, const char *name)
692 old = pci_read_byte(dev, 0x88);
695 pci_write_byte(dev, 0x88, new);
696 if (pci_read_byte(dev, 0x88) != new) {
697 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x88, new, name);
701 old = pci_read_byte(dev, 0x6d);
705 pci_write_byte(dev, 0x6d, new);
707 if (pci_read_byte(dev, 0x6d) != new) {
708 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x6d, new, name);
715 /* ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80) */
716 static int enable_flash_sb400(struct pci_dev *dev, const char *name)
720 struct pci_dev *smbusdev;
722 /* Look for the SMBus device. */
723 pci_filter_init((struct pci_access *)0, &f);
727 for (smbusdev = pacc->devices; smbusdev; smbusdev = smbusdev->next) {
728 if (pci_filter_match(&f, smbusdev))
733 fprintf(stderr, "ERROR: SMBus device not found. Aborting.\n");
737 /* Enable some SMBus stuff. */
738 tmp = pci_read_byte(smbusdev, 0x79);
740 pci_write_byte(smbusdev, 0x79, tmp);
742 /* Change southbridge. */
743 tmp = pci_read_byte(dev, 0x48);
745 pci_write_byte(dev, 0x48, tmp);
747 /* Now become a bit silly. */
759 static int enable_flash_mcp55(struct pci_dev *dev, const char *name)
761 uint8_t old, new, byte;
764 /* Set the 0-16 MB enable bits. */
765 byte = pci_read_byte(dev, 0x88);
766 byte |= 0xff; /* 256K */
767 pci_write_byte(dev, 0x88, byte);
768 byte = pci_read_byte(dev, 0x8c);
769 byte |= 0xff; /* 1M */
770 pci_write_byte(dev, 0x8c, byte);
771 word = pci_read_word(dev, 0x90);
772 word |= 0x7fff; /* 16M */
773 pci_write_word(dev, 0x90, word);
775 old = pci_read_byte(dev, 0x6d);
779 pci_write_byte(dev, 0x6d, new);
781 if (pci_read_byte(dev, 0x6d) != new) {
782 printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x6d, new, name);
789 static int enable_flash_ht1000(struct pci_dev *dev, const char *name)
793 /* Set the 4MB enable bit. */
794 byte = pci_read_byte(dev, 0x41);
796 pci_write_byte(dev, 0x41, byte);
798 byte = pci_read_byte(dev, 0x43);
800 pci_write_byte(dev, 0x43, byte);
806 * Usually on the x86 architectures (and on other PC-like platforms like some
807 * Alphas or Itanium) the system flash is mapped right below 4G. On the AMD
808 * Elan SC520 only a small piece of the system flash is mapped there, but the
809 * complete flash is mapped somewhere below 1G. The position can be determined
810 * by the BOOTCS PAR register.
812 static int get_flashbase_sc520(struct pci_dev *dev, const char *name)
814 int i, bootcs_found = 0;
819 mmcr = physmap("Elan SC520 MMCR", 0xfffef000, getpagesize());
821 /* 2. Scan PAR0 (0x88) - PAR15 (0xc4) for
822 * BOOTCS region (PARx[31:29] = 100b)e
824 for (i = 0x88; i <= 0xc4; i += 4) {
825 parx = *(volatile uint32_t *)(mmcr + i);
826 if ((parx >> 29) == 4) {
828 break; /* BOOTCS found */
832 /* 3. PARx[25] = 1b --> flashbase[29:16] = PARx[13:0]
833 * PARx[25] = 0b --> flashbase[29:12] = PARx[17:0]
836 if (parx & (1 << 25)) {
837 parx &= (1 << 14) - 1; /* Mask [13:0] */
838 flashbase = parx << 16;
840 parx &= (1 << 18) - 1; /* Mask [17:0] */
841 flashbase = parx << 12;
844 printf("AMD Elan SC520 detected, but no BOOTCS. Assuming flash at 4G\n");
848 munmap (mmcr, getpagesize());
852 typedef struct penable {
853 uint16_t vendor, device;
855 int (*doit) (struct pci_dev *dev, const char *name);
858 static const FLASH_ENABLE enables[] = {
859 {0x1039, 0x0630, "SiS630", enable_flash_sis630},
860 {0x8086, 0x122e, "Intel PIIX", enable_flash_piix4},
861 {0x8086, 0x1234, "Intel MPIIX", enable_flash_piix4},
862 {0x8086, 0x7000, "Intel PIIX3", enable_flash_piix4},
863 {0x8086, 0x7110, "Intel PIIX4/4E/4M", enable_flash_piix4},
864 {0x8086, 0x7198, "Intel 440MX", enable_flash_piix4},
865 {0x8086, 0x2410, "Intel ICH", enable_flash_ich_4e},
866 {0x8086, 0x2420, "Intel ICH0", enable_flash_ich_4e},
867 {0x8086, 0x2440, "Intel ICH2", enable_flash_ich_4e},
868 {0x8086, 0x244c, "Intel ICH2-M", enable_flash_ich_4e},
869 {0x8086, 0x2480, "Intel ICH3-S", enable_flash_ich_4e},
870 {0x8086, 0x248c, "Intel ICH3-M", enable_flash_ich_4e},
871 {0x8086, 0x24c0, "Intel ICH4/ICH4-L", enable_flash_ich_4e},
872 {0x8086, 0x24cc, "Intel ICH4-M", enable_flash_ich_4e},
873 {0x8086, 0x24d0, "Intel ICH5/ICH5R", enable_flash_ich_4e},
874 {0x8086, 0x25a1, "Intel 6300ESB", enable_flash_ich_4e},
875 {0x8086, 0x2670, "Intel 631xESB/632xESB/3100", enable_flash_ich_dc},
876 {0x8086, 0x2640, "Intel ICH6/ICH6R", enable_flash_ich_dc},
877 {0x8086, 0x2641, "Intel ICH6-M", enable_flash_ich_dc},
878 {0x8086, 0x5031, "Intel EP80579", enable_flash_ich7},
879 {0x8086, 0x27b0, "Intel ICH7DH", enable_flash_ich7},
880 {0x8086, 0x27b8, "Intel ICH7/ICH7R", enable_flash_ich7},
881 {0x8086, 0x27b9, "Intel ICH7M", enable_flash_ich7},
882 {0x8086, 0x27bd, "Intel ICH7MDH", enable_flash_ich7},
883 {0x8086, 0x2810, "Intel ICH8/ICH8R", enable_flash_ich8},
884 {0x8086, 0x2811, "Intel ICH8M-E", enable_flash_ich8},
885 {0x8086, 0x2812, "Intel ICH8DH", enable_flash_ich8},
886 {0x8086, 0x2814, "Intel ICH8DO", enable_flash_ich8},
887 {0x8086, 0x2815, "Intel ICH8M", enable_flash_ich8},
888 {0x8086, 0x2912, "Intel ICH9DH", enable_flash_ich9},
889 {0x8086, 0x2914, "Intel ICH9DO", enable_flash_ich9},
890 {0x8086, 0x2916, "Intel ICH9R", enable_flash_ich9},
891 {0x8086, 0x2917, "Intel ICH9M-E", enable_flash_ich9},
892 {0x8086, 0x2918, "Intel ICH9", enable_flash_ich9},
893 {0x8086, 0x2919, "Intel ICH9M", enable_flash_ich9},
894 {0x8086, 0x3a14, "Intel ICH10DO", enable_flash_ich10},
895 {0x8086, 0x3a16, "Intel ICH10R", enable_flash_ich10},
896 {0x8086, 0x3a18, "Intel ICH10", enable_flash_ich10},
897 {0x8086, 0x3a1a, "Intel ICH10D", enable_flash_ich10},
898 {0x1106, 0x8231, "VIA VT8231", enable_flash_vt823x},
899 {0x1106, 0x3177, "VIA VT8235", enable_flash_vt823x},
900 {0x1106, 0x3227, "VIA VT8237", enable_flash_vt823x},
901 {0x1106, 0x3372, "VIA VT8237S", enable_flash_vt8237s_spi},
902 {0x1106, 0x8324, "VIA CX700", enable_flash_vt823x},
903 {0x1106, 0x0586, "VIA VT82C586A/B", enable_flash_amd8111},
904 {0x1106, 0x0686, "VIA VT82C686A/B", enable_flash_amd8111},
905 {0x1078, 0x0100, "AMD CS5530(A)", enable_flash_cs5530},
906 {0x100b, 0x0510, "AMD SC1100", enable_flash_sc1100},
907 {0x1039, 0x0008, "SiS5595", enable_flash_sis5595},
908 {0x1022, 0x2080, "AMD CS5536", enable_flash_cs5536},
909 {0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
910 {0x1002, 0x438D, "ATI(AMD) SB600", enable_flash_sb600},
911 {0x1002, 0x439d, "ATI(AMD) SB700", enable_flash_sb600},
912 {0x10B9, 0x1533, "ALi M1533", enable_flash_ali_m1533},
913 {0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */
914 {0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */
915 /* Slave, should not be here, to fix known bug for A01. */
916 {0x10de, 0x00d3, "NVIDIA CK804", enable_flash_ck804},
917 {0x10de, 0x0260, "NVIDIA MCP51", enable_flash_ck804},
918 {0x10de, 0x0261, "NVIDIA MCP51", enable_flash_ck804},
919 {0x10de, 0x0262, "NVIDIA MCP51", enable_flash_ck804},
920 {0x10de, 0x0263, "NVIDIA MCP51", enable_flash_ck804},
921 {0x10de, 0x0360, "NVIDIA MCP55", enable_flash_mcp55}, /* M57SLI*/
922 {0x10de, 0x0361, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
923 {0x10de, 0x0362, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
924 {0x10de, 0x0363, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
925 {0x10de, 0x0364, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
926 {0x10de, 0x0365, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
927 {0x10de, 0x0366, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
928 {0x10de, 0x0367, "NVIDIA MCP55", enable_flash_mcp55}, /* Pro */
929 {0x10de, 0x0548, "NVIDIA MCP67", enable_flash_mcp55},
930 {0x1002, 0x4377, "ATI SB400", enable_flash_sb400},
931 {0x1166, 0x0205, "Broadcom HT-1000", enable_flash_ht1000},
932 {0x1022, 0x3000, "AMD Elan SC520", get_flashbase_sc520},
933 {0x1022, 0x7440, "AMD AMD-768", enable_flash_amd8111},
936 void print_supported_chipsets(void)
940 printf("\nSupported chipsets:\n\n");
942 for (i = 0; i < ARRAY_SIZE(enables); i++)
943 printf("%s (%04x:%04x)\n", enables[i].name,
944 enables[i].vendor, enables[i].device);
947 int chipset_flash_enable(void)
949 struct pci_dev *dev = 0;
950 int ret = -2; /* Nothing! */
953 /* Now let's try to find the chipset we have... */
954 for (i = 0; i < ARRAY_SIZE(enables); i++) {
955 dev = pci_dev_find(enables[i].vendor, enables[i].device);
961 printf("Found chipset \"%s\", enabling flash write... ",
964 ret = enables[i].doit(dev, enables[i].name);