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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
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| 3 | * Date: 1.6.2000 |
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| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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| 5 | * |
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| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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| 7 | * low-level infrastructure for developing OS kernels and Embedded |
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| 8 | * Applications; it partially derives from the HARTIK project but it |
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| 9 | * currently is independently developed. |
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| 10 | * |
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| 11 | * OSLib is distributed under GPL License, and some of its code has |
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| 12 | * been derived from the Linux kernel source; also some important |
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| 13 | * ideas come from studying the DJGPP go32 extender. |
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| 14 | * |
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| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
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| 16 | * D.J. Delorie and all the other developers who believe in the |
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| 17 | * freedom of software and ideas. |
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| 18 | * |
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| 19 | * For legalese, check out the included GPL license. |
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| 20 | */ |
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| 21 | |||
| 22 | /* Reset (or halt...) the system */ |
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| 23 | |||
| 24 | #include <ll/i386/hw-func.h> |
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| 40 | pj | 25 | #include <ll/i386/error.h> |
| 2 | pj | 26 | |
| 27 | FILE(reboot); |
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| 28 | |||
| 622 | mauro | 29 | no_idt = { 0, 0 }; |
| 30 | |||
| 2 | pj | 31 | void halt(void) |
| 32 | { |
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| 33 | cputs("Halt called"); |
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| 34 | __asm__("hlt"); |
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| 35 | } |
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| 36 | /* |
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| 37 | * This code has been taken by the Linux Kernel and it has been |
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| 38 | * freely modified and simplified to do a reboot! |
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| 39 | */ |
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| 40 | |||
| 41 | void cold_reboot(void) |
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| 42 | { |
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| 622 | mauro | 43 | reboot(0); |
| 2 | pj | 44 | } |
| 45 | |||
| 46 | void warm_reboot(void) |
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| 47 | { |
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| 622 | mauro | 48 | reboot(0x1234); |
| 2 | pj | 49 | } |
| 50 | |||
| 51 | /* |
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| 52 | * This routine reboots the machine by asking the keyboard |
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| 53 | * controller to pulse the reset-line low. If mode = 0x1234 you |
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| 54 | * tell to BIOS to do a warm boot, else cold boot is performed! |
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| 55 | */ |
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| 56 | void reboot(int mode) |
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| 57 | { |
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| 622 | mauro | 58 | register int n, i,j; |
| 2 | pj | 59 | |
| 622 | mauro | 60 | lmempokew((LIN_ADDR)0x472,mode); |
| 61 | for (n = 0; n < 100; n++) { |
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| 62 | // Wait for keyboard controller ready |
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| 63 | for (i=0; i<0x10000; i++) |
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| 64 | if ((inp(0x64) & 0x02) == 0) break; |
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| 65 | // Do nothing for a while... |
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| 66 | for(j = 0; j < 100000 ; j++); |
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| 67 | // pulse reset low |
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| 68 | outp(0xfe,0x64); |
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| 69 | // Do nothing for a while... |
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| 70 | for(j = 0; j < 100000 ; j++); |
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| 71 | } |
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| 72 | /* That didn't work - force a triple fault.. */ |
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| 73 | __asm__ __volatile__("lidt %0": :"m" (no_idt)); |
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| 74 | __asm__ __volatile__("int3"); |
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| 2 | pj | 75 | } |