/* * This file is part of the flashrom project. * * Copyright (C) 2000 Silicon Integrated System Corporation * Copyright (C) 2005-2007 coresystems GmbH * Copyright (C) 2006 Uwe Hermann * * 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 #include #include #include #include #include #include #include #include "flash.h" 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). * 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). */ new = old | 0x2c4; 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("BIOS 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); } void *ich_spibar = NULL; static int enable_flash_ich_dc_spi(struct pci_dev *dev, const char *name, unsigned long spibar) { uint8_t old, new, bbs; uint32_t tmp, gcs; void *rcrb; /* Read the Root Complex Base Address Register (RCBA) */ tmp = pci_read_long(dev, 0xf0); /* Calculate the Root Complex Register Block address */ tmp &= 0xffffc000; printf_debug("Root Complex Register Block address = 0x%x\n", tmp); rcrb = mmap(0, 0x4000, PROT_READ | PROT_WRITE, MAP_SHARED, fd_mem, (off_t)tmp); if (rcrb == MAP_FAILED) { perror("Can't mmap memory using " MEM_DEV); exit(1); } printf_debug("GCS address = 0x%x\n", tmp + 0x3410); 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, (bbs == 0x3) ? "LPC" : ((bbs == 0x2) ? "PCI" : "SPI")); /* SPIBAR is at RCRB+0x3020 for ICH[78] and RCRB+0x3800 for ICH9. */ printf_debug("SPIBAR = 0x%lx\n", tmp + spibar); /* TODO: Dump the SPI config regs */ ich_spibar = rcrb + spibar; 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 enable_flash_ich_dc(dev, name); } static int enable_flash_ich78(struct pci_dev *dev, const char *name) { return enable_flash_ich_dc_spi(dev, name, 0x3020); } int ich9_detected = 0; static int enable_flash_ich9(struct pci_dev *dev, const char *name) { ich9_detected = 1; return enable_flash_ich_dc_spi(dev, name, 0x3800); } 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; } return 0; } 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); } } 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_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; } 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, 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, 0x2640, "Intel ICH6/ICH6R", enable_flash_ich_dc}, {0x8086, 0x2641, "Intel ICH6-M", enable_flash_ich_dc}, {0x8086, 0x27b0, "Intel ICH7DH", enable_flash_ich78}, {0x8086, 0x27b8, "Intel ICH7/ICH7R", enable_flash_ich78}, {0x8086, 0x27b9, "Intel ICH7M", enable_flash_ich78}, {0x8086, 0x27bd, "Intel ICH7MDH", enable_flash_ich78}, {0x8086, 0x2810, "Intel ICH8/ICH8R", enable_flash_ich78}, {0x8086, 0x2811, "Intel ICH8M-E", enable_flash_ich78}, {0x8086, 0x2812, "Intel ICH8DH", enable_flash_ich78}, {0x8086, 0x2814, "Intel ICH8DO", enable_flash_ich78}, {0x8086, 0x2815, "Intel ICH8M", enable_flash_ich78}, {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}, {0x1106, 0x8231, "VIA VT8231", enable_flash_vt823x}, {0x1106, 0x3177, "VIA VT8235", enable_flash_vt823x}, {0x1106, 0x3227, "VIA VT8237", enable_flash_vt823x}, {0x1106, 0x8324, "VIA CX700", enable_flash_vt823x}, {0x1106, 0x0686, "VIA VT82C686", 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}, {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 */ {0x1002, 0x4377, "ATI SB400", enable_flash_sb400}, {0x1166, 0x0205, "Broadcom HT-1000", enable_flash_ht1000}, }; 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; }