/* SPDX-License-Identifier: GPL-2.0+ */ /* * nv_tco: TCO timer driver for nVidia chipsets. * * (c) Copyright 2005 Google Inc., All Rights Reserved. * * Supported Chipsets: * - MCP51/MCP55 * * (c) Copyright 2000 kernel concepts <nils@kernelconcepts.de>, All Rights * Reserved. * https://www.kernelconcepts.de * * Neither kernel concepts nor Nils Faerber admit liability nor provide * warranty for any of this software. This material is provided * "AS-IS" and at no charge. * * (c) Copyright 2000 kernel concepts <nils@kernelconcepts.de> * developed for * Jentro AG, Haar/Munich (Germany) * * TCO timer driver for NV chipsets * based on softdog.c by Alan Cox <alan@redhat.com>
*/
/* * Some address definitions for the TCO
*/
#define TCO_RLD(base) ((base) + 0x00) /* TCO Timer Reload and Current Value */ #define TCO_TMR(base) ((base) + 0x01) /* TCO Timer Initial Value */
#define TCO_STS(base) ((base) + 0x04) /* TCO Status Register */ /* * TCO Boot Status bit: set on TCO reset, reset by software or standby * power-good (survives reboots), unfortunately this bit is never * set.
*/ # define TCO_STS_BOOT_STS (1 << 9) /* * first and 2nd timeout status bits, these also survive a warm boot, * and they work, so we use them.
*/ # define TCO_STS_TCO_INT_STS (1 << 1) # define TCO_STS_TCO2TO_STS (1 << 10) # define TCO_STS_RESET (TCO_STS_BOOT_STS | TCO_STS_TCO2TO_STS | \
TCO_STS_TCO_INT_STS)
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