/* * flash rom utility: enable flash writes (board specific) * * Copyright (C) 2005-2007 coresystems GmbH * Copyright (C) 2006 Uwe Hermann * Copyright (C) 2007 Luc Verhaegen * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 * */ /* * Contains the board specific flash enables. */ #include #include #include #include #include "flash.h" #include "debug.h" /* * Match on pci-ids, no report received, just data from the mainboard * specific code: * main: 0x1022:0x746B, which is the SMBUS controller. * card: 0x1022:0x36C0... */ static int board_agami_aruma(char *name) { /* Extended function index register, either 0x2e or 0x4e */ #define EFIR 0x2e /* Extended function data register, one plus the index reg. */ #define EFDR EFIR + 1 char b; /* Disable the flash write protect. The flash write protect is * connected to the WinBond w83627hf GPIO 24. */ outb(0x87, EFIR); /* sequence to unlock extended functions */ outb(0x87, EFIR); outb(0x20, EFIR); /* SIO device ID register */ b = inb(EFDR); printf_debug("\nW83627HF device ID = 0x%x\n",b); if (b != 0x52) { fprintf(stderr, "\nIncorrect device ID, aborting write protect disable\n"); return -1; } outb(0x2b, EFIR); /* GPIO multiplexed pin reg. */ b = inb(EFDR) | 0x10; outb(0x2b, EFIR); outb(b, EFDR); /* select GPIO 24 instead of WDTO */ outb(0x7, EFIR); /* logical device select */ outb(0x8, EFDR); /* point to device 8, GPIO port 2 */ outb(0x30, EFIR); /* logic device activation control */ outb(0x1, EFDR); /* activate */ outb(0xf0, EFIR); /* GPIO 20-27 I/O selection register */ b = inb(EFDR) & ~0x10; outb(0xf0, EFIR); outb(b, EFDR); /* set GPIO 24 as an output */ outb(0xf1, EFIR); /* GPIO 20-27 data register */ b = inb(EFDR) | 0x10; outb(0xf1, EFIR); outb(b, EFDR); /* set GPIO 24 */ outb(0xaa, EFIR); /* command to exit extended functions */ return 0; } /* * Suited for VIAs EPIA M and MII, and maybe other CLE266 based EPIAs. * * We don't need to do this when using linuxbios, GPIO15 is never lowered there. */ static int board_via_epia_m(char *name) { struct pci_dev *dev; unsigned int base; uint8_t val; dev = pci_dev_find(0x1106, 0x3177); /* VT8235 ISA bridge */ if (!dev) { fprintf(stderr, "\nERROR: VT8235 ISA Bridge not found.\n"); return -1; } /* GPIO12-15 -> output */ val = pci_read_byte(dev, 0xE4); val |= 0x10; pci_write_byte(dev, 0xE4, val); /* Get Power Management IO address. */ base = pci_read_word(dev, 0x88) & 0xFF80; /* enable GPIO15 which is connected to write protect. */ val = inb(base + 0x4D); val |= 0x80; outb(val, base + 0x4D); return 0; } /* * Winbond LPC super IO. * * Raises the ROM MEMW# line. */ static void w83697_rom_memw_enable(void) { uint8_t val; outb(0x87, 0x2E); /* enable extended functions */ outb(0x87, 0x2E); outb(0x24, 0x2E); /* rom bits live here */ val = inb(0x2F); if (!(val & 0x02)) /* flash rom enabled? */ outb(val | 0x08, 0x2F); /* enable MEMW# */ outb(0xAA, 0x2E); /* disable extended functions */ } /* * Suited for Asus A7V8X-MX SE and A7V400-MX. * */ static int board_asus_a7v8x_mx(char *name) { struct pci_dev *dev; uint8_t val; dev = pci_dev_find(0x1106, 0x3177); /* VT8235 ISA bridge */ if (!dev) { fprintf(stderr, "\nERROR: VT8235 ISA Bridge not found.\n"); return -1; } /* This bit is marked reserved actually */ val = pci_read_byte(dev, 0x59); val &= 0x7F; pci_write_byte(dev, 0x59, val); w83697_rom_memw_enable(); return 0; } /* * We use 2 sets of ids here, you're free to choose which is which. This * to provide a very high degree of certainty when matching a board on * the basis of Subsystem/card ids. As not every vendor handles * subsystem/card ids in a sane manner. * * Keep the second set nulled if it should be ignored. * */ struct board_pciid_enable { /* Any device, but make it sensible, like the isa bridge. */ uint16_t first_vendor; uint16_t first_device; uint16_t first_card_vendor; uint16_t first_card_device; /* Any device, but make it sensible, like * the host bridge. May be NULL */ uint16_t second_vendor; uint16_t second_device; uint16_t second_card_vendor; uint16_t second_card_device; /* From linuxbios table */ char *lb_vendor; char *lb_part; char *name; int (*enable)(char *name); }; struct board_pciid_enable board_pciid_enables[] = { { 0x1022, 0x746B, 0x1022, 0x36C0, 0x0000, 0x0000, 0x0000, 0x0000, "AGAMI", "ARUMA", "Agami Aruma", board_agami_aruma }, { 0x1106, 0x3177, 0x1106, 0xAA01, 0x1106, 0x3123, 0x1106, 0xAA01, NULL, NULL, "VIA EPIA M/MII/...", board_via_epia_m }, { 0x1106, 0x3177, 0x1043, 0x80A1, 0x1106, 0x3205, 0x1043, 0x8118, NULL, NULL, "Asus A7V8-MX SE", board_asus_a7v8x_mx }, { 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL } /* Keep this */ }; /* * Match boards on linuxbios table gathered vendor and part name. * Require main pci-ids to match too as extra safety. * */ static struct board_pciid_enable * board_match_linuxbios_name(char *vendor, char *part) { struct board_pciid_enable *board = board_pciid_enables; for (; board->name; board++) { if (!board->lb_vendor || strcmp(board->lb_vendor, vendor)) continue; if (!board->lb_part || strcmp(board->lb_part, part)) continue; if (!pci_dev_find(board->first_vendor, board->first_device)) continue; if (board->second_vendor && !pci_dev_find(board->second_vendor, board->second_device)) continue; return board; } return NULL; } /* * Match boards on pci ids and subsystem ids. * Second set of ids can be main only or missing completely. */ static struct board_pciid_enable *board_match_pci_card_ids(void) { struct board_pciid_enable *board = board_pciid_enables; for (; board->name; board++) { if (!board->first_card_vendor || !board->first_card_device) continue; if (!pci_card_find(board->first_vendor, board->first_device, board->first_card_vendor, board->first_card_device)) continue; if (board->second_vendor) { if (board->second_card_vendor) { if (!pci_card_find(board->second_vendor, board->second_device, board->second_card_vendor, board->second_card_device)) continue; } else { if (!pci_dev_find(board->second_vendor, board->second_device)) continue; } } return board; } return NULL; } /* * */ int board_flash_enable(char *vendor, char *part) { struct board_pciid_enable *board = NULL; int ret = 0; if (vendor && part) board = board_match_linuxbios_name(vendor, part); if (!board) board = board_match_pci_card_ids(); if (board) { printf("Found board \"%s\": Enabling flash write... ", board->name); ret = board->enable(board->name); if (ret) printf("Failed!\n"); else printf("OK.\n"); } return ret; }