diff options
Diffstat (limited to 'util/superiotool')
| -rw-r--r-- | util/superiotool/pci.c | 39 | ||||
| -rw-r--r-- | util/superiotool/via.c | 106 |
2 files changed, 145 insertions, 0 deletions
diff --git a/util/superiotool/pci.c b/util/superiotool/pci.c new file mode 100644 index 0000000000..0548bc7ce0 --- /dev/null +++ b/util/superiotool/pci.c @@ -0,0 +1,39 @@ +/* + * This file is part of the superiotool project. + * + * Copyright (C) 2010 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; either version 2 of the License, or + * (at your option) any later version. + * + * 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 + */ + +#include "superiotool.h" + +struct pci_access *pacc; + +struct pci_dev *pci_dev_find(uint16_t vendor, uint16_t device) +{ + struct pci_dev *temp; + struct pci_filter filter; + + pci_filter_init(NULL, &filter); + filter.vendor = vendor; + filter.device = device; + + for (temp = pacc->devices; temp; temp = temp->next) + if (pci_filter_match(&filter, temp)) + return temp; + + return NULL; +} diff --git a/util/superiotool/via.c b/util/superiotool/via.c new file mode 100644 index 0000000000..604c41a14b --- /dev/null +++ b/util/superiotool/via.c @@ -0,0 +1,106 @@ +/* + * This file is part of the superiotool project. + * + * Copyright (C) 2009 Carl-Daniel Hailfinger + * + * 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; either version 2 of the License, or + * (at your option) any later version. + * + * 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 + */ + +#include "superiotool.h" + +#define DEVICE_ID_VT82C686_REG 0xe0 +#define DEVICE_REV_VT82C686_REG 0xe1 + +static const struct superio_registers reg_table[] = { + {0x3c, "VT82C686A/VT82C686B", { + {EOT}}}, + {EOT} +}; + +static uint8_t vt82c686_conf = 0; + +static int enter_conf_mode_via_vt82c686(void) +{ + struct pci_dev *dev; + + dev = pci_dev_find(0x1106, 0x0686); + if (!dev) { + if (verbose) + printf(" PCI device 1106:0686 not found.\n"); + return 1; + } + + vt82c686_conf = pci_read_byte(dev, 0x85); + if (verbose) + printf(" Super I/O %sabled, Super I/O configuration %sabled\n", + (vt82c686_conf & (1 << 0)) ? "en" : "dis", + (vt82c686_conf & (1 << 1)) ? "en" : "dis"); + + /* If the Super I/O is not enabled, skip it. */ + if (!(vt82c686_conf & (1 << 0))) + return 1; + + /* Enable Super I/O configuration mode. */ + pci_write_byte(dev, 0x85, vt82c686_conf | (1 << 1)); + + return 0; +} + +static void exit_conf_mode_via_vt82c686(void) +{ + struct pci_dev *dev; + + dev = pci_dev_find(0x1106, 0x0686); + if (!dev) { + printf("Bug: PCI device 1106:0686 not found during shutdown.\n" + "Please report to coreboot@coreboot.org.\n"); + return; + } + + /* Restore (disable?) Super I/O configuration mode setting. */ + pci_write_byte(dev, 0x85, vt82c686_conf); +} + +void probe_idregs_via(uint16_t port) +{ + uint16_t id; + uint8_t rev; + + probing_for("VIA", "", port); + + if (enter_conf_mode_via_vt82c686()) + return; + + id = regval(port, DEVICE_ID_VT82C686_REG); + rev = regval(port, DEVICE_REV_VT82C686_REG); + + if (superio_unknown(reg_table, id)) { + if (verbose) + printf(NOTFOUND "id=0x%04x, rev=0x%02x\n", id, rev); + exit_conf_mode_via_vt82c686(); + return; + } + + printf("Found VIA %s (id=0x%04x, rev=0x%02x) at 0x%x\n", + get_superio_name(reg_table, id), id, rev, port); + chip_found = 1; + + exit_conf_mode_via_vt82c686(); +} + +void print_via_chips(void) +{ + print_vendor_chips("VIA", reg_table); +} |