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/* Project:     OSLib
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 * Description: The OS Construction Kit
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 * Date:                1.6.2000
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 * Idea by:             Luca Abeni & Gerardo Lamastra
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 *
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 * OSLib is an SO project aimed at developing a common, easy-to-use
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 * low-level infrastructure for developing OS kernels and Embedded
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 * Applications; it partially derives from the HARTIK project but it
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 * currently is independently developed.
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 *
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 * OSLib is distributed under GPL License, and some of its code has
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 * been derived from the Linux kernel source; also some important
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 * ideas come from studying the DJGPP go32 extender.
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 *
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 * We acknowledge the Linux Community, Free Software Foundation,
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 * D.J. Delorie and all the other developers who believe in the
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 * freedom of software and ideas.
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 *
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 * For legalese, check out the included GPL license.
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 */
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/*      Reset (or halt...) the system   */
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#include <ll/i386/hw-func.h>
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#include <ll/i386/error.h>
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FILE(reboot);
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int no_idt[] = { 0, 0 };
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void halt(void)
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{
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        cputs("Halt called");
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        __asm__("hlt");
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}
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/*
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 * This code has been taken by the Linux Kernel and it has been
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 * freely modified and simplified to do a reboot!
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 */
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void cold_reboot(void)
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{
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        reboot(0);
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}
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void warm_reboot(void)
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{
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        reboot(0x1234);
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}
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/*
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 * This routine reboots the machine by asking the keyboard
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 * controller to pulse the reset-line low. If mode = 0x1234 you
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 * tell to BIOS to do a warm boot, else cold boot is performed!
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 */
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void reboot(int mode)
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{
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        register int n, i,j;
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        lmempokew((LIN_ADDR)0x472,mode);
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        for (n = 0; n < 100; n++) {
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                // Wait for keyboard controller ready
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                for (i=0; i<0x10000; i++)
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                        if ((inp(0x64) & 0x02) == 0) break;
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                // Do nothing for a while...
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                for(j = 0; j < 100000 ; j++);
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                // pulse reset low
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                outp(0xfe,0x64);
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                // Do nothing for a while...
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                for(j = 0; j < 100000 ; j++);
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        }
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        /* That didn't work - force a triple fault.. */
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        __asm__ __volatile__("lidt %0": :"m" (no_idt));
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        __asm__ __volatile__("int3");
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}