Lines Matching +full:smi +full:- +full:based

1 // SPDX-License-Identifier: GPL-2.0+
5  *	(c) Copyright 2006-2009 Wim Van Sebroeck <[email protected]>.
9  *	provided "AS-IS" and at no charge.
26 #include <linux/errno.h>		/* For the -ENODEV/... values */
29 #include <linux/ioport.h>		/* For io-port access */
35 /* SuperMicro Pentium 3 Era 370SSE+-OEM1/P3TSSE */
37 /* SuperMicro Pentium 4 / Xeon 4 / EMT64T Era Systems - no longer supported */
47 			"0 (none), 1=SuperMicro Pent3, 911=Broken SMI BIOS");
55  *	Board: Super Micro Computer Inc. 370SSE+-OEM1/P3TSSE
62  *	    BIOS setup -> Power -> TCO Logic SMI Enable -> Within5Minutes
63  *	    This setting enables SMI to clear the watchdog expired flag.
64  *	    If BIOS or CPU fail which may cause SMI hang, then system will
66  *	    application has to take over the control from SMI.
81 	/* Bit 13: TCO_EN -> 0 = Disables TCO logic generating an SMI# */  in supermicro_old_pre_start()
82 	val32 = inl(smires->start);  in supermicro_old_pre_start()
83 	val32 &= 0xffffdfff;	/* Turn off SMI clearing watchdog */  in supermicro_old_pre_start()
84 	outl(val32, smires->start);	/* Needed to activate watchdog */  in supermicro_old_pre_start()
91 	/* Bit 13: TCO_EN -> 1 = Enables the TCO logic to generate SMI# */  in supermicro_old_pre_stop()
92 	val32 = inl(smires->start);  in supermicro_old_pre_stop()
93 	val32 |= 0x00002000;	/* Turn on SMI clearing watchdog */  in supermicro_old_pre_stop()
94 	outl(val32, smires->start);	/* Needed to deactivate watchdog */  in supermicro_old_pre_stop()
99  *	Board: Some Intel ICHx based motherboards
103  *	the SMI handler clear's the TIMEOUT bit in the TC01_STS register
108  *	debugging: the SMI handler is quite simple - it tests value in
114  *	TIMEOUT can get set to 1 and SMI generated when TCO_TMR_HLT is set
119  *	broken code by disabling Global SMI.
121  *	WARNING: globally disabling SMI could possibly lead to dramatic
123  *	SMI is used for communication between OS and firmware.
132 	val32 = inl(smires->start);  in broken_bios_start()
133 	/* Bit 13: TCO_EN     -> 0 = Disables TCO logic generating an SMI#  in broken_bios_start()
134 	   Bit  0: GBL_SMI_EN -> 0 = No SMI# will be generated by ICH. */  in broken_bios_start()
136 	outl(val32, smires->start);  in broken_bios_start()
143 	val32 = inl(smires->start);  in broken_bios_stop()
144 	/* Bit 13: TCO_EN     -> 1 = Enables TCO logic generating an SMI#  in broken_bios_stop()
145 	   Bit  0: GBL_SMI_EN -> 1 = Turn global SMI on again. */  in broken_bios_stop()
147 	outl(val32, smires->start);  in broken_bios_stop()
198 		return -EINVAL;  in iTCO_vendor_init_module()
200 	pr_info("vendor-support=%d\n", iTCO_vendorsupport);  in iTCO_vendor_init_module()