Add VIA VT82C686A/VT82C686B support to superiotool. The patch as-is will likely not detect the Super I/O due to missing PCI functionality in superiotool, but you might get lucky.
This adds an additional requirement to superiotool: libpci. I have made the PCI code conditional on PCI_SUPPORT for now.
Signed-off-by: Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net
Index: superiotool-vt82c686/via.c =================================================================== --- superiotool-vt82c686/via.c (Revision 0) +++ superiotool-vt82c686/via.c (Revision 0) @@ -0,0 +1,112 @@ +/* + * 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" +#ifdef PCI_SUPPORT +#include <pci/pci.h> +#endif + +#define DEVICE_ID_VT82C686_REG 0xe0 + +#define DEVICE_REV_VT82C686_REG 0xe1 + +static const struct superio_registers reg_table[] = { + {0x3c, "VT82C686A/VT82C686B", { + {EOT}}}, + {EOT} +}; + +#ifdef PCI_SUPPORT +static uint8_t vt82c686_conf = 0; +#endif + +static int enter_conf_mode_via_vt82c686(void) +{ +#ifdef PCI_SUPPORT + struct pci_dev *dev; + + dev = pci_dev_find(0x1106, 0x0686); + if (!dev) { + if (verbose) + printf("Associated PCI device not found.\n"); + return 1; + } + vt82c686_conf = pci_read_byte(dev, 0x85); + if (verbose) + printf("Super I/O %sabled, Super I/O configuration %sabled", + (vt82c686_conf & (1 << 0)) ? "en" : "dis", + (vt82c686_conf & (1 << 1)) ? "en" : "dis"); + /* If 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)); +#endif + return 0; +} + +static void exit_conf_mode_via_vt82c686(void) +{ +#ifdef PCI_SUPPORT + struct pci_dev *dev; + + dev = pci_dev_find(0x1106, 0x0686); + if (!dev) { + printf("Bug: PCI device 0x%04x:0x%04x not found during " + "shutdown. Please report to coreboot@coreboot.org\n"); + return; + } + /* Restore (disable?) Super I/O configuration mode setting. */ + pci_write_byte(dev, 0x85, vt82c686_conf); +#endif +} + +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); +} Index: superiotool-vt82c686/superiotool.h =================================================================== --- superiotool-vt82c686/superiotool.h (Revision 4988) +++ superiotool-vt82c686/superiotool.h (Arbeitskopie) @@ -141,6 +141,10 @@ void probe_idregs_winbond(uint16_t port); void print_winbond_chips(void);
+/* via.c */ +void probe_idregs_via(uint16_t port); +void print_via_chips(void); + /** Table of which config ports to probe for each Super I/O family. */ static const struct { void (*probe_idregs) (uint16_t port); @@ -153,6 +157,7 @@ {probe_idregs_nsc, {0x2e, 0x4e, 0x15c, EOT}}, {probe_idregs_smsc, {0x2e, 0x4e, 0x162e, 0x164e, 0x3f0, 0x370, EOT}}, {probe_idregs_winbond, {0x2e, 0x4e, 0x3f0, 0x370, 0x250, EOT}}, + {probe_idregs_via, {0x3f0, EOT}}, };
/** Table of functions to print out supported Super I/O chips. */ @@ -165,6 +170,7 @@ {print_nsc_chips}, {print_smsc_chips}, {print_winbond_chips}, + {print_via_chips}, };
#endif Index: superiotool-vt82c686/Makefile =================================================================== --- superiotool-vt82c686/Makefile (Revision 4988) +++ superiotool-vt82c686/Makefile (Arbeitskopie) @@ -32,7 +32,7 @@ CFLAGS = -O2 -Wall -Werror -Wstrict-prototypes -Wundef -Wstrict-aliasing \ -Werror-implicit-function-declaration -ansi -pedantic $(SVNDEF)
-OBJS = superiotool.o ali.o fintek.o ite.o nsc.o smsc.o winbond.o +OBJS = superiotool.o ali.o fintek.o ite.o nsc.o smsc.o winbond.o via.o
OS_ARCH = $(shell uname) ifeq ($(OS_ARCH), Darwin)